This Instruction for the operation of gas protection (hereinafter referred to as the Instruction) is mandatory for employees involved in the adjustment, technical and operational maintenance of gas protection devices in the power systems of the Russian Federation.
The Instruction describes the principles of operation and provides the designs and technical data of gas and jet relays used in power systems, as well as methods for technical and operational maintenance of protection with these relays. Information is given about the shut-off valve and the oil level control relay in the expander, since these elements are functionally part of the gas protection circuits. The description and technical data of the PG-22 and PGZ-22 relays that have expired and are morally obsolete are excluded from the Instruction, which are recommended to be replaced with relays of modern designs. Also excluded is an appendix on the replacement of reed switches in a relay made in Germany in connection with the termination of the activity of NTTM "Poisk" - a manufacturer of elements of the reed switch holder. The Instruction includes a description of the design and instructions for commissioning and maintenance during operation of the new domestic gas relays RGT80 and RGT50 and the jet relay RST25.
TO characteristic damage oil-filled electrical apparatus - a transformer, autotransformer, reactor (hereinafter referred to as the transformer) include short circuits (short circuits) between the windings, coil short circuits, "fire" of the steel of the magnetic circuit, oil leakage from the tank, malfunctions of the oil-filled contactor of the tap changer of the voltage regulation device under load (OLTC) and etc.
Almost all damage inside the tank of an oil-filled electrical apparatus is accompanied by the release of gas as a result of the decomposition of oil or other insulating materials under the action of partial electrical discharges, increased heat, electric arc. During a short circuit, an accelerated flow of oil or its mixture with gas from the tank of the apparatus into the expander occurs. During operation, it is also possible to reduce the oil level or release gas for various reasons.
Contactor malfunction can be caused by damage to the insulation, weakening of the mechanism springs, aging of ceramic power contacts, which leads to slowdown and fuzzy switching. A protracted arc is accompanied (taking into account the small volume of oil in the contactor tank) by the rapid decomposition of the oil. A jet of oil mixed with gas is directed from the contactor tank to the expander.
Gas relays are designed to protect transformers with an expander from damage inside the tank, in which there is a release of gas, a decrease in the oil level, or the occurrence of an accelerated flow of oil from the transformer tank to the conservator.
Jet relays are designed to protect the contactors of oil-filled transformer tap changers from damage, accompanied by the occurrence of an accelerated flow of oil from the contactor tank to the expander.
In case of internal damages in the transformer, even the smallest ones, gaseous decomposition products of oil or organic insulation are released, which ensures the operation of gas protection at the very beginning of the onset of a gradually developing damage. In some cases of dangerous internal damage to transformers ("fire" of steel, interturn short circuits, etc.), only gas protection is in effect, and electrical protection transformers do not work due to insufficient sensitivity.
Gas relays have a hermetically sealed case installed in the oil pipeline between the transformer tank and the conservator. Figure 1 (not shown) shows a simplified sketch of a design option for such a relay. The reacting relay unit has three main elements: signal 1 and shutdown 2, 3 (elements 1 and 3 - floats, 2 - pressure plate), each of which works under certain conditions.
Under normal operating conditions, the relay case is filled with oil, and the elements take up a position in which the contacts they control (not shown in the figure) are open. With a slight gas formation in the transformer tank, the gas passes through the oil pipeline into the expander, accumulating in the upper part of the relay housing, where the signal element 1 is located.
When a certain amount of gas accumulates in the relay, the oil level in it decreases, the float of the signal element 1 falls under the action of gravity and the signal contact closes; similarly, the signal element of the relay is triggered when the oil level in the relay drops for other reasons.
With a further decrease in the oil level, when the relay housing is emptied by more than half, the float of the disconnecting element 3 also falls under the action of gravity and the disconnecting contact closes.
In the event of a short circuit inside the transformer tank, under the action of an electric arc, a rapid decomposition of the oil occurs, and the flow of oil or a mixture of oil and gas rushes at high speed from the tank to the expander (arrow in Figure 1). Under the influence of this flow, plate 2, which has an adjustable oil flow rate setting, deviates to a certain angle and the tripping contact closes. Depending on the type and development of the transformer damage, sequential or simultaneous operation of the signal and tripping elements of the relay is possible.
With rapid gas formation and sharp jolts of oil, the contacts may rebound after operation, so the gas relay must act to turn off through the intermediate relay according to the self-holding scheme.
Jet relays, unlike gas relays, do not have floats and their contacts are triggered to turn off the transformer under the action of a pressure plate, which is similarly gas relay has an adjustable oil flow rate setting. The design of the jet relay usually provides for fixing the pressure plate after actuation in the final position until it is manually released, which increases the reliability of the relay operation under conditions of a less stationary flow of an oil-gas mixture compared to the flow in a gas relay.
The use of jet relays that do not have floats is due to the peculiarity of the operation of the contactors of the on-load tap-changers. V normal operation contactor under the influence of an electric arc at the moment of switching, a small amount of oil is decomposed and gas is released from it, which passes through the pipeline into its expander or into the compartment of the common expander and then through it Airways goes out into the atmosphere. Not a large number of combustible gas escaping from the oil during contactor operation is normal.
Diameter through hole the connecting flange of the gas relay must correspond to the inner diameter of the pipeline from the tank to the expander. The jet relay must be installed in an oil line with an internal diameter of 25 mm and as close as possible to the contactor. Diameter mismatch can result in failure of actuation, such as failure of the lower float to actuate when oil is lost, or a change in the oil flow rate of the pressure plate actuation compared to the set point.
The cover of the transformer (reactor) must have a rise towards the expander and, therefore, to the gas relay of at least 1%, and the oil line to the expander - at least 2%. To lift the transformer cover from the side of the expander, metal linings are used under the transformer rollers.
2017-03-07 Evgeny Fomenko
The Bosch wr 10 2p geyser can operate on both natural and liquefied gas, i.e. balloon. It is equipped with triple protection: a thermoelement for controlling the ignition flame, controlling the draft of gas combustion products, and a temperature limiter that protects the column from overheating.
The model is also equipped with a reliable flame modulation system. This means that the column automatically adjusts the heating to the required fluid flow. If you are washing dishes in the kitchen, and someone decides to wash in the shower, the water temperature will be the same, both in the kitchen and in the shower. The power of the liquid at the outlet is also automatically regulated when the water pressure in the water supply changes.
Before switching on, according to the operating instructions for the gas Bosch speakers, it is necessary to make sure that there is draft in the chimney. this can be done by bringing a lit candle or match to the chimney. If the flame deviates towards the chimney, then everything is in order with the draft, and the device can be turned on.
If there is no draft, you should find out the cause and clean the air duct, or seal the seams of the air duct pipes if a loose fit of its parts is found. When the column is operating, make sure that the window or window is ajar, the door in the room where the column is installed should not close tightly.
This ensures the natural movement of air and the flow of oxygen, the unit burns a large amount of oxygen during operation. Failure to comply with these requirements may result in poisoning. carbon monoxide. It should also be remembered that when the column is running, you cannot turn on the fan or air conditioner, this disrupts the outflow carbon monoxide through the chimney.
On the front panel of the apparatus, on the left, there is a slider that regulates the power, on the right, a toggle switch for the volume of liquid, above them there is a viewing window. Never get too close to it to avoid burns.
If starting for the first time or after long downtime, some air may accumulate in the dispenser pipes. To remove it, open and close the tap several times with hot water, at intervals of about a minute, until it is completely removed.
When first turned on, open the gas and water supply valves, open the faucet hot water to make sure fluid is coming in.
The Bosch column has a piezo ignition system, the button of which is located at the bottom left. To turn it on, you need to move the slider from the left extreme position to the ignition position, indicated by an asterisk. Drown it and at the same time press the piezo ignition button several times until the ignition flame appears.
At the same time, loud clicks are heard, they should not be scared, as it should be. If the pilot flame ignites, release the slider button, if ignition does not occur, repeat the entire procedure again. The unit may not start if, after a long period of inactivity or when first turned on in gas pipes air got in. To remove it, hold the slider button in a recessed state until all air is removed.
Once the unit has turned on, set the power you need using the same slider. The extreme right position provides maximum power, while increasing gas consumption. Via round pen the required fluid flow and its temperature are set.
By turning the knob clockwise, you reduce the flow and increase the temperature, by turning it counterclockwise, on the contrary, the flow increases, the temperature decreases. High temperature setting increases gas flow and scale formation in the heat exchanger.
The pilot flame burns constantly, and the main burner ignites at the moment the hot water tap is opened. The shutdown occurs when you turn off the hot water tap. To turn off the unit completely, move the power regulator slider to the extreme left position, the pilot flame will go out ...
If there is a risk of water freezing in the appliance, e.g. in a country house in winter period must be completely drained of water. To do this, close the water and gas supply valves, open the taps on the mixer.
Remove the housing cover by unscrewing a few bolts to access the water unit. Remove the bracket in the form of the letter “P” from the filter housing on the water fitting and remove the plug, which is located immediately behind the bracket. Wait a while until the liquid is completely drained.
To prolong the life of the device, it is necessary to carry out regular maintenance, at least once a year. Clean the inside of the column from dust and soot, rinse the heat exchanger from scale. At the same time, you should be aware that all work with gas equipment should be carried out only by a specialist.
After all preparations have been made Bosch boiler Gaz 6000 for launch, after pre-launch preparation, which includes checking expansion tank, stop valves, filters, checking the pressure in the gas main, the tightness of the connection of all joints, the boiler is connected to the electrical network.
After powering up to the mains, the “attention” icon appears on the electronic display, which is located on the front panel of the unit. Next, press the power button on the front panel, located near the upper left corner of the electronic display. Above the display is a magnetic instruction that allows you to easily change the settings of the unit.
When turned on, within two seconds, the boiler electronics conducts self-diagnostics, all sensors are checked and switched to blocking mode. The display shows the current temperature and status code. Next, it is necessary to adapt the fan speed to the length of the chimney to which the unit is connected.
This operation is performed by simultaneously pressing and holding three buttons - "+", "-" and "back". The mode is set in accordance with the parameter specified in the instructions for the device - we set the second service level, confirm the action with the "ok" button, holding it until square brackets appear on the display.
In addition to the display, in the lower right part, a pressure gauge is mounted showing the pressure in the system, the normal pressure is in the green zone. The red zone indicates the pressure below and above the nominal pressure when the protection is activated and the unit is turned off.
Bosch THERM 4000
You can increase the pressure using the blue tap by unscrewing it counterclockwise until the pressure gauge needle returns to the blue zone. When the pressure increases, the liquid will be discharged through the corrugated tube at the bottom of the unit and the pressure gauge will return to its normal position.
The boiler can operate in two modes, liquid heating and heating mode, which of the modes is active, shows the icon on the display.
The mode is selected by pressing the "+" or "mode" button. After selecting the mode, set desired temperature, then press "ok" - confirm the choice, after which the up and down arrows appear on the display, use the "+" and "-" buttons to set desired temperature heating. To save the selection, press the OK button and hold for a couple of seconds.
If it is necessary to set the heating operating mode, select it with the “-” button, confirm by pressing “OK”. The choice of temperature and saving the choice is carried out in the same way as when setting the water heating temperature. The fire icon that appears on the display indicates that the turbine has turned on and heating has begun.
When the set temperature is reached, the fire icon will disappear, after falling, when the boiler turns on again, it will appear again, this will happen cyclically throughout the entire operation of the boiler when given parameters. In the event of any malfunctions in the operation of the Bosch Gaz 6000, for example, in the absence of gas or water supply, the protection will work and an error message will appear on the display.
The interpretation of the error and the actions to eliminate it are described in the instructions for the boiler. After identifying and eliminating the cause, you must confirm the action on the display by pressing and holding the "ok" button for a few seconds. After that, the boiler automatically starts up again.
The unit is protected from freezing if the pump is running and fluid is circulating through the heating system. If the boiler needs to be turned off, then antifreeze is added to the heating liquid, and water is drained from the hot water supply, as a rule, this work is done by a specialist. Maintenance is also produced by a specialist, since the unit is quite complex device associated with high blood pressure and gas.
We offer you to watch a video about the rules for setting up the Bosch 4000 O column:
This manual is not a professional setup manual, this is a household HBO operating manual.
Vacuum (for a carburetor) or electronic (for an injector) two-stage gearbox is designed to operate on liquefied petroleum gas fuel (propane-butane). From a cylinder gas under pressure of 16 atm. goes to gas valve, where it is cleaned from resinous substances and mechanical impurities. Further, the purified gas passes into the first stage of the reducer, where the pressure is reduced to 2 atm., and then to the second, where it is reduced to 0.5 atm.
Under the action of vacuum created in the collector of a running engine, gas from the cavity of the second stage of the reducer enters the tee-dispenser. From the tee-dispenser through a mixing device (spacer, mixer or nozzles) to the carburetor chambers or injection device, where a homogeneous combustible mixture is formed, which enters the engine cylinders. The coolant from the engine block through the adapter enters the lower reducer pipe, heating the gas and improving its evaporation.
The procedure for launching HBO into the operation of a carburetor car
- Starting a cold engine is necessary (at temperatures below + 7-10 degrees) and preferably, in principle, to produce on gasoline, followed by warming up to a temperature of 40-50 degrees. Then the switch (switch in the cabin) is moved to the middle position, gasoline is produced from the float chamber. As soon as the car starts to work intermittently, move the switch to the "gas" position. It is allowed to start a warm engine on gas.
- RPM idle move adjustable with a screw located on the gearbox housing. The gas flow rate is regulated by screws on the tee-dispenser. After the initial adjustment made by the master of the installation center, the flow-dynamic characteristics can be improved as follows: screw 1 regulates the gas supply to the first chamber of the carburetor, which affects the dynamic characteristics of the machine during acceleration and partial loads. Accelerate the car to 80 km / h, and if the “reception is good”, tighten the screw 1 half a turn, repeat the procedure until the car starts to “dumb”, then unscrew the screw 1 a quarter of a turn back. Screw 2 controls the second chamber of the carburetor, the degree of filling of which determines the throttle response at full loads. To adjust the second chamber, accelerate the car over 90 km/h and repeat the procedure described above. Because the density of the gas (kg/l) is less than the density of gasoline, gas is consumed by 10-15% more. When parking overnight, the car should be converted to petrol. To do this, increase the engine speed to 3000-3500 rpm, switch the switch (switch) to the “gasoline” position, bypassing the development, and wait for the float chamber to fill with gasoline.
The procedure for starting an injection car
The injection car is equipped with a two-position automatic switch (switch) gas-gasoline. When the switch is in the petrol position, the machine runs on petrol only (the red warning light on the petrol sign is on). To convert a car to gas, you need the following:
1. Switch the switch to the gas position.
2. Start the engine and warm it up to a temperature of 40-50 degrees. At the same time, the lamp of the petrol symbol on the switchboard lights up red, the green lamp on the gas symbol flashes (rev standby mode).
Z. To switch to gas, you must press the accelerator pedal and gain 2500 rpm and release it sharply. The car switched to gas (the green lamp on the gas symbol is on, the red one is off).
Basic safety requirements
- In the case when the power is not satisfied, increased consumption, idling problems, prohibited self-adjustment car (incorrect regulation can cause popping (injector only) and, as a result, failure of the mass air flow sensor, air filter housing, intake manifold). In this case, you should contact the service station.
- Injector: it is forbidden to operate the car until the gas from the cylinder is completely depleted (a lean mixture can cause popping). It is recommended to leave 10%.
- It is recommended to change the air filter at least every 5-6 thousand km.
- It is necessary to drain the condensate (plastic screw-plug on the gearbox housing) every 1000 km, but no later than 1500 km.
- Injector: if cotton occurs, it is necessary to switch the switch to the petrol position (only the red lamp will be on) and come for a consultation to the service center.
- Injector: it is forbidden to operate the car on gas when there is no gasoline in the gas tank. An air lock can lead to the failure of the fuel pump (the minimum balance is 7-10 liters).
- When the car is running on gas, the petrol valve is in the closed position (OFF), therefore, if the electrical system fails, both the gas supply and gasoline are interrupted. In this case, it is necessary to check the HBO fuse and, if it is faulty, replace it. If the fuse is good, the electrical system is checked as follows:
when the switch is switched to the “gas” position (or the “gasoline” position), the corresponding solenoid valves should make a characteristic click. If this does not happen, the system is faulty. In this case, it is necessary to transfer the switch to the middle position (development), screw in the screw for the mechanical opening of the gas valve and come to the technical center. It is strictly forbidden to keep the gasoline valve open when the electrical system is working, because this leads to the simultaneous supply of gas and gasoline to the engine, which is unacceptable.
- for the optimal composition of the air-fuel mixture, it is recommended to change the air filter at least after 7000 km of run.
— It is recommended to use an air filter with as little airflow resistance as possible.
- replace spark plugs every 10,000 km (a spark plug producing less than 3-4 pulses does not ignite the gas-air mixture in the engine cylinder).
- drain the condensate from the gearbox every 1500 km by unscrewing the screw on the gearbox housing.
- After every 500 km driven by a car on gas, drive 15-20 km on gasoline, which contributes to the deposition of lead oxide on the valves and seats, preventing their additional wear, and also reduces wear on the diaphragms and clogging of the carburetor.
General safety requirements
— Carry out a daily check of the coolant level (antifreeze).
— In case of detection of leaks or damage to HBO, close the main valve of the multivalve on the cylinder and come to the service center. It is forbidden to tighten nuts and connecting pipelines under gas pressure.
- It is forbidden to start the car on gas with the choke removed, this will shorten the life of the main membrane or cause a rupture.
- It is forbidden to leave a car fully filled with gas in the sun without first using a few liters.
- It is forbidden to operate HBO if external mechanical damage is detected.
- It is forbidden to continue driving the car on gas if you detect the smell of gas in the cabin.
- When installing and dismantling any HBO units on your own, as well as when storing a car for a long time (more than a month), it is necessary to close the filling and main valves on the multi-valve of the cylinder.
Successful operation!
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Operating instructions for cars, trucks and buses for operation on liquefied petroleum (LPG) and compressed natural (CNG) gases.
1. INTRODUCTION
This manual applies to cars, trucks and buses of all modifications, domestic and foreign production with "carburetor" and "injection" engines, equipped with LPG equipment (hereinafter referred to as LPG) from LOVATO, BIGAS, TOMASETTO, ZAVOLI and other manufacturers and establishes a general methodology and procedure for operation and maintenance.
2. WARNINGS
2.1 The car is designed for operation in the CIS of the PA or PBA brands in accordance with GOST 27578-87,
CNG or gasoline.
2.2 It is not allowed to operate the engine with the simultaneous supply of gas and gasoline.
2.3 To maintain the normal performance of the gasoline power system and extend the life of the rubber products of the gas reducer, it is recommended to start and warm up a cold engine on gasoline, followed by switching to gas.
2.4 Stop the engine by turning off the ignition. When the car is put in for repairs or a long-term parking, it is necessary to develop gas from the system, for which, with the engine running on gas in idling mode (outside a closed room), close the multi-valve supply valve (if it is LPG) or the valves on all cylinders (if it is CNG) and wait for the engine to stop. To avoid damage to the seals, close the filling and flow valves of the multivalve (LPG) and cylinder valves (CNG) only by hand, without the use of any tool.
2.5 Perform maintenance or repair of LPG, as well as other components and assemblies of the vehicle, only after gas is produced from gas system supply, with valves closed.
2.6 Repair the cylinder or multivalve only after draining the gas (LPG) or bleed (CNG) in a safe place, and then purging with air or neutral gas.
2.7 Fill cylinders at gas filling stations AGNS and CNG filling stations in compliance with the relevant rules of these stations.
2.8 When operating the vehicle, pay attention Special attention on the tightness of all connections of gas pipelines and gas equipment, connections of gasoline pipelines (gasoline leakage is in 90% of cases the cause of ignition of cars with LPG), the condition of the insulation of the electrical wiring related to HBO, the condition of the hoses supplying antifreeze to the evaporator reducer (the efficiency of evaporation and gas heating and in the absence of the proper coolant level in the system in the evaporator reducer, airlock, leading to freezing of the gearbox and stopping the car on gas.
2.9 It is not allowed to operate a car with an expired test (re-examination) of cylinders. Cylinders are subject to periodic examination within the time limits specified by the "RULES", which is carried out at special test stations that have the permission of the Gosgortekhnadzor authorities. The date of the next test and the brand are applied on the cylinder plate.
2.10 Before checking the electrical equipment on the car, make sure that there is no gas in the engine compartment of the car and the surrounding area. Perform maintenance or repair of electrical equipment only when the battery. Do not allow unreliable fastening of contacts, as well as uninsulated ends of live wires, in order to avoid sparking or short circuit.
2.11 Do not allow persons who do not have sufficient qualifications in this area to repair and adjust HBO.
2.12 In case of fire, if possible, close the flow valves on the cylinders and, having developed gas at increased engine speeds, turn off the ignition. Extinguish the flame with a powder or carbon dioxide fire extinguisher, sand, rags, clothing.
3. GENERAL CHARACTERISTICS OF THE EQUIPMENT.
HBO consists of the following components and parts:
Remote filling device (LPG) or filling valve (CNG)
Cylinders with monoblock fittings (multi-valve and safety box-CIS) and cylinder valve (CPG).
Gas solenoid valve (can be interlocked with the evaporator reducer).
Reducer-evaporator.
Gas dispenser (for ejection systems).
Mixer gas-air (for ejection systems)
Control unit (for distributed gas injection systems)
Gasoline solenoid valve (for carburetor engines)
Fuel selector.
Piping and hose system.
Refueling of cylinders at gas filling stations and CNG filling stations is carried out by the tanker - this is his responsibility, if possible, always give him the opportunity to connect and disconnect the filling nozzle to your car. The gun on the CNG station is universal, and
at the gas filling station there is a euro-version and the Russian standard (to connect the Russian version, use an adapter that you can purchase after installing LPG).
GAS CYLINDERS.
Cylinders for gas are subject to periodic examination in organizations that have permission from the bodies of Gostekhnadzor. The frequency of inspection of cylinders for LPG is 2 years, for CNG - 5 years. According to the results of the survey, a mark is made in the passport of the cylinder
(if any) and the next test date is stamped on the cylinder label or directly on the cylinder body.
GAS SOLENOID VALVE.
The gas solenoid valve (EMK gas) is located in the engine compartment of the vehicle and is designed to shut off the gas supply from cylinders to gas reducer. The composition of the gas valve, as a rule, includes a gas purification filter (felt or paper) - it needs periodic cleaning and, if necessary, replacement. Failure of the gas EMC leads to the impossibility of supplying gas to the gas reducer. The reason for the failure may be the failure of the valve coil, the complete clogging of the gas filter, as well as the lack of voltage on the coil contacts in the mode of vehicle operation on gas.
PETROL SOLENOID VALVE.
The gasoline solenoid valve is located in the engine compartment of the vehicle and is designed to shut off the supply of gasoline to the carburetor while the engine is running on gas. It has an emergency opening valve that allows you to continue, if necessary, driving on gasoline, regardless of the performance of the valve itself. Does not require maintenance. It is necessary to periodically check the hoses for supplying and discharging gasoline to the valve and control the tightness of the hose clamps, excluding possible leakage of gasoline that could cause a fire in the engine compartment. Absent in HBO systems for injection engines.
REDUCER-EVAPORATOR.
Located in the engine compartment A / M. Designed to reduce the pressure of gas coming from a cylinder, evaporation (LPG) or heating (CNG) and provide the required amount of gas for the engine in any operating mode. Connected to the "small circle" of the engine cooling system using hoses and clamps. The principle of operation of gearboxes different manufacturers similar, only difference in design. Needs periodic cleaning from internal tarry deposits (a consequence of low-quality LPG gas), draining gas condensate (once every 5000 km after stopping the engine, through the condensate drain hole located in the lower part of the gearbox), if necessary, the rubber products of the gearbox are replaced (on average every 60,000 kilometers). It is necessary to monitor the reliability of fastening the gearbox, the condition of the hoses supplying coolant to it, and tightening the hose clamps.
GAS DISPENSER.
It is located on the hose between the reducer-evaporator and the gas-air mixer. In systems with lambda regulation, it can be made in the form of a stepper motor. It is single pass and double pass. The principle of operation is similar to a water tap - it closes the flow area of the gas hose, allowing you to adjust the desired amount of gas entering the engine.
GAS-AIR MIXER.
It is applied in ejection systems. In carburetor engines, there is an upper or lower location (depending on the place of connection to the carburetor). Provides optimal preparation of the gas-air mixture before entering the vehicle engine. For injection engines, options are available for the joint arrangement of the mixer and the DMRV fuse (Sensor Fuse mass flow air - a device that minimizes damage to parts of the vehicle injection system and the air filter in the event of "reverse gas pops"). Care of the mixer consists in periodic cleaning of resinous deposits and control over the reliability of its fastening to each other. constituent parts. Not available in multiport gas injection systems.
FUEL SWITCH.
Located in the car interior. Made in the form of a three-position switch or touch key. Allows you to switch between "GAS" and "PETROL" modes with visual or audible confirmation from the driver's seat.
It may contain a reserve indicator and a gas level indicator in the cylinder.
DISTRIBUTED GAS INJECTION SYSTEM.
SRWG is a technically complex system that requires qualified maintenance and repair. In case of situations related to equipment failures or problems in operation, we recommend contacting a specialized service.
Operating Instructions for Combined Gas Steam Convection Oven.
Model: XG
I.Instructions for the installer of this equipment
Rating plate Certification Installation
Preliminaries
4. Installation
4.1 Electrical connection
4.3 Accessory connections
(Steam condenser, etc.)
4.4 Gas connection
5. Getting Started
II. User manual
Operator instructions Operating notes Control panel
3.1 Description and operation of the digital control panel
3.2 Program installation examples
Communication with the outside world Maintenance and cleaning Shutdown in the event of a breakdown.
III. The principle of cooking
Typology of Cooking Cooking Variations Using Grid Cookware
IV. 1.Ordinary maintenance.
2. Special maintenance
3. More frequent breakdowns
Application-1 (control panel)
Application-2 (control panel)
Attention: hot surface
Attention
Read the instructions
I.Instructions for the installer of this equipment
Dear customers, we would like to thank you and congratulate you on your purchase of UNOX equipment.
Note:
The equipment must only be used for its intended purpose. Furnaces and steam plants combi are for cooking and baking purposes only, as reported below. Any other use is considered incorrect. Working temperature oven ranges from 0-260˚ C.
Plate from those data.
Low voltage directive
DBT 73/23/CEE and 93/68/CEE
According to EN regulation
According to EN 60335-1 regulation
EMC directive
According to EN 55014-1, EN 203-2, EN 437
The noise level for these models is below 70 dB.
Installation
Preliminaries
All electrical connections and installations must be carried out by a qualified worker, in accordance with current laws.
3.1 Check the installation location
Before installing the equipment, please check the dimensions and correct location and return of gas and electrical connection. Check the technical data of the oven on the attached plate. Check for consistency with earth circuit and cleaning system.
3.2 Assembling the legs
You will find the feet inside the equipment, in the carton. Do not operate equipment without feet.
Screw the support legs to the bottom of the equipment as shown in the figure.
After screwing in the legs, adjust the height of the equipment by unscrewing the legs.
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Connection to an external water tank.
(Replacement of water electric valve with water pump)
In all models where this option is provided, to make a replacement, you must:
Remove the back of the oven
Disconnect supply wires from el. valve
Connect the water pump to the oven
Connect the inner water pipe to the pump
Connect the water pipe inlet to the pump
Cut off the edge of the water pipe as shown in the figure, insert the sinker (2) and fix it to the filter
Put the rear back
Attention: every time you use the pump, make sure there is water in the tank, as the pump may burn out.
Draining condensate water:
The condensate pipe steam dehumidification system is located on the rear of the oven and must be connected to an open drain by a rigid or movable pipe. The pipe diameter cannot be less than the drain diameter. The length of the pipe is not more than 1 meter.
Avoid narrow passages and corners for metal passages throughout the entire pipe.
The drain pipe should be 20 cm below the connection drain for easy fluid flow.
4.3 Accessory contacts.
Connection checker.
To connect the Prover to the digital oven control:
Remove the back of the oven Remove the metal spike with tweezers Connect the Prover control cable to the power using the correct connector Lock the latch of the cable you will find on the Prover cable in the spec. slot, which is located on the bottom of the furnace. Put the rear back on.
Steam condenser connection.
6. Remove the back of the oven Remove the metal spike with tweezers Connect the Prover control cable to the power using the correct connector. slot, which is located on the bottom of the furnace. Put the rear back on. After all connections have been made, the oven will automatically recognize whether it is connected to a steam condenser.
4.4 Connection to the gas system.
Prior to installation, a qualified worker must verify that the information on the equipment label matches the gas system present in the plant.
In case of discrepancies, carefully read the chapter "Transformation and adaptation to different types gases"
The equipment must contain a blocking valve between the machine and the gas source. The crane must be freely accessible. To connect the oven to the gas mains you will have to use the ISO 7-1 ¾ connection which is located on the lower left rear of the oven. You can use a rigid or flexible pipe for connection by inserting a blocking cock. If you use flexible pipes, they must be made of steel and must not run near hot spots and must not be subjected to torsion or tension. If you are using non-metal materials, such as insulating materials, they must be certified and approved by the current European regulations. Test the insulating layer of the gas system with a solution of water and soap or special non-corrosive foam materials. Never use open fire to find out the gas leak.
Beginning of work.
If your gas type is different from what we use to test the equipment, please carefully read the chapter "Transformation and adaptation to different types of gases"
5.1 "Transformation and adaptation to different types of gases"
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5.2 Checking the nominal thermal capacity
The thermal tank must be checked by an authorized person or service.
This control must be carried out with new installations, transformations or adaptations to different types of gases, as well as after any maintenance.
The nominal thermal capacity as well as the connection pressures can be found on the data plate. data.
Insulated components (eg paint) must not be touched (damaged).
Method of measurement.
The required nominal thermal power can be obtained with nozzles as described in plate A and with the pressure connection indicated for each type of gas.
If you wish to make a further check of the rated thermal power, this can be done by measuring.
The check is carried out using a tachometer and a chronometer.
The exact volume of gas that must pass each time is indicated on the plate from those. data.
The volume that is used during the connection must be maintained within a tolerance of +-5.
If you find any deviations, you must ensure that you are using tips with correct diameter and at correct pressure.
5.3 Checking the pressure connection.
You must measure the connection pressure while the equipment is in operation using measuring device liquid pressure (e.g. U pressure gauge with a minimum resolution of 0.1 mbar or an electronic pressure gauge). To perform control, reach the solenoid valve and connect a pressure gauge "E" to the pressure outlets and inlets "B" and "D" using flexible tubes. You can terminate this connection only after unwinding isolation "A" and "C"
Measure the pressure at the outlet: if the pressure does not correspond to the desired one, do not start work.
5.4 Verification of work.
Read the instructions before starting work. Check equipment insulation. Check that the flame is generated, ignited and exits through the 3 holes behind the drip tray.
5.5 Tips for the end (last) user
Qualified personnel should advise the last user to use the instruction manual.
Any changes to the structure or adjustment of the equipment require verification by authorized personnel.
After those. maintenance 2 times a year it is necessary to sign a contract on the inspection.
5.6 Examination of work.
When starting work, make sure that the machine can stop unexpectedly. For this reason, you must insist on refitting the key (the gray button on the control panel) so that the air inside the circle can be expelled.
After starting the oven, check for flames through the openings on the front panel, below the door.
If the flame continues to go out after ignition ends, even after several attempts, turn the socket to neutral (disconnect the plug, turn it 180˚ and turn on the plug).
II. User instructions.
Attention: the equipment must not be washed with water pressure.
Never wash the cooking chamber with acidic or aggressive detergents. Use plain water and soap.
Instructions for the operator.
Attention:
This manual must be kept in a safe place accessible to operators working on the machine. For repairs, contact only authorized service centers and always use UNOX spare parts
Notes for use.
This equipment must be used for its intended purpose. Furnaces are for cooking. Any other use is considered incorrect.
Operating temperature ranges from 0-260˚ The oven can be used for:
Baking all types of bread and confectionery, both fresh and frozen
Preparation of all types of culinary products, fresh or frozen
Regeneration of chilled or frozen foods
Steaming meat, fish and vegetables
When placing food in the cooking chamber, leave about 20 mm. between trays to circulate hot air inside the chamber.
Do not salt food in the chamber.
Control panel.
3.1 Description and use of the digital control panel.
Cooking control.
The time is displayed in minutes and you can program 4 different main periods.
The digital control allows you to adjust the cooking time up to a maximum of 9 hours and 59 minutes for each main period.
You can adjust all operating options such as temperature, steam, etc. for each main period.
To move from period to period, you need to press the button on the left side of the timer.
The display will show the total time, the time set for each of the 4 periods.
During cooking, the remaining time is displayed.
Climate control.
This function allows you to set the amount of steam and dry percentage inside the chamber.
By turning the button clockwise, you set the percentage of steam desired inside the chamber: the green lamp lights up (each light indicates a 10% increase in steam inside the chamber).
By turning the button counterclockwise you set the percentage of drying, the red lamp lights up (each light indicates an increase of 10%)
If 000 appears on the display and you turn the button counterclockwise, InF will appear on the display. If this happens, it means that the cooking time will never run out. The oven starts working after pressing the Start/Stop button and stops only after pressing this button again.
Fan stop.
If you press the “Fans Stop” button, you turn off the motor, heating elements, gas spray valve and venturi system.
When this function is working, the corresponding red button lights up.
This function is used to raise food inside the oven or to delay the start of cooking.
Cooking chamber temperature control.
You can set the temperature between 0-100˚C.
Turn the button clockwise to set the control probe temperature internal temperature.
The SET position shows the desired temperature setting. The position with the "eye" symbol allows you to check the actual temperature inside the food you are cooking.
During the operation of the oven, the display changes every 4 seconds from the set temperature to the actual temperature.
When the core temperature reaches setting 1, the oven switches off (even if the set cooking time has not yet elapsed).
Cooking with Delta T
Delta T is special kind cooking, where the difference between the core temperature (measured by the probe) and the cavity temperature always remains the same.
If this function is used, the division of time into 4 main periods is deactivated, the total cooking time is not known, because cooking stops when the core temperature reaches setting 1.
Temperature setting system.
A) set the cooking time only for the chamber
b) chamber temperature + internal temperature control
C) Internal temperature control + Delta T
When using system B, you cannot use Delta T
When using system C, the chamber temperature cannot be set.
Start/Stop button
This button is used to start the cooking process, moreover, it is used to pause.
When the oven is in manual mode, each press of this button adds 1 minute to the total time.
In digital mode, stored programs are running, this button can only be used at the end of the last time period, each press of this button adds 1 minute to the total time and this minute has the same characteristics (temperature, steam, etc.) of the last time period.
LIGHT button
Pressing this button will turn on the oven light for 30 seconds. If you press the button for 3 seconds, you turn on the oven light and it stays on until you press it again. Pressing the button a second time turns off the light.
Saving and using programs.
The oven is set to store 70 programs.
Procedure for saving a program.
1- using the button at the bottom of the control panel, dial the number of the desired program.
2- Install 4 different input systems that are used in 4 different cooking phases
Procedure for using a stored program
2- start the program by pressing the START/STOP button
Procedure for changing a stored program.
1- use the same button with which you entered the program number, set the number of the desired program
2- change the input you want to change
3- Save the program by holding the “MEM PROG” button for 5 seconds
Automatic preheating
This feature works while you are using the program.
When you turn on the oven by pressing Start, the chamber starts heating the chamber, but you do not see anything on the display, when the oven reaches the preheating temperature, a long sound will be heard.
When you hear this sound, you can put food into the oven. You close the door and the selected program starts automatically.
ON/OFF button
These buttons turn the oven on and off. When the stove is turned off, the corresponding button lights up and shows the available power.
Oven/Check button
(only available for furnaces with digital Prover)
Digital control panel allows you to control the oven and digital Prover at the same time
This means that they can work at the same time. By pressing this button while they are running, you switch oven control to Prover control and vice versa.
When the button is red, you control the furnace, green - Prover.
Proving chamber control
When you control Prover (green button is lit) you can only measure time and temperature, all functions are deactivated. Maximum temperature setting in Prover is 70˚
“Water” button on Prover
If you press this button, you manually fill the proofer tank with water.
3.2 Example of program definition on digital control.
Follow the graphic example.
The total cooking time is the sum of the 4 main programs set, in this example it is 37 minutes.
With the Prog button, select the number of the program you want to install (from 1-70) enter the data in the first main period:
Time 2 minutes
Chamber temperature 150˚С
Internal temperature -
Steam Percentage 100%
Humidity -
Fan stop no
Press the MEM button to save the entered data. Go to period 2. Enter data for the second period
Time 5 minutes
Chamber temperature 180˚С
Internal temperature -
Steam percentage 80%
Humidity -
Fan stop no
Press the MEM button to save the entered data. Go to period 3. Enter data for 3 periods
Time 10 minutes
Chamber temperature 260˚С
Internal temperature -
Steam percentage 50%
Humidity -
Fan stop no
Press the MEM button to save the entered data. Go to period 4. Enter data for 4 periods
Time 20 minutes
Chamber temperature 120˚С
Internal temperature -
Steam Percentage 100%
Humidity -
Fan stop no
press the MEM button to save the entered data.
3.3 Flame conversion
Under the control panel you will find a signal button which signals the stop of the stove and is the button for re-equipping the flame.
The stop signal light indicates that the flame has gone out, in which case this button must be pressed.
Communication with the outside world.
The oven has a serial shutter for communicating with the outside world (e.g. PC, pocket PC)
This shutter (output) allows you to: insert a cooking program, change some outputs.
The serial output is located on the lower right side of the oven, below the control panel.
The washing up.
Before starting this type of work, disconnect the furnace from the source and wait until it cools down.
5.1 using the oven for the first time
Wash the metal parts of the machine before operating the oven. warm water and soap and rinse. Never wash the inside of the machine with acidic or aggressive detergents.
Leave the chamber empty and heat it for about 30 minutes to 200°C to eliminate the smell of any insulating materials.
5.2 Cleaning the camera
At the end of each working cycle, wash the chamber with spec. means.
Side supports must be removed
turn on the stove
Set the temperature to 80˚C
set steam to maximum level for 10 minutes
Let the oven cool down and clean it with a cloth
Never wash parts of of stainless steel acidic or aggressive agents, even if they are diluted.
5.3 Washing external surfaces ovens
Do not use pressurized water to clean the outside of the machine. Use a damp cloth.
5.4 Opening the crankcase
Shutdown in case of breakdown.
If there is a malfunction, deactivate the equipment
Disconnect the circuit breaker. supply located at the top of the equipment
Contact an experienced service representative.
III Principles of preparation.
cooking typology.The types of preparations you can make with this machine are described in this manual:
Bakery and confectionery products. Professional bakery with:
Convection: bread is made with hot air Convection and humidity: bread is made with hot air and humidity.
Gastronomy. Professional food preparation with:
1.steam: cooking is done with steam
2. convection: cooking is carried out only with hot air without steam
3. convection + steam: cooking is done with hot air and steam
1.1 Basic cooking methods:
Attention:
A. Before any operation, heat the oven 30˚ above the desired temperature. This allows you to achieve the best results.
B. use more high temperatures than needed for certain foods cause uneven cooking
C. Baking bread and confectionery: do not use trays over 20 mm high. and avoid food touching each other on the tray.
convection cooking
Humidity: not used
In convection ovens, cooking is carried out by hot air that circulates through the cooking chamber. This allows you to cook uniform food, due to the distribution of heat evenly.
Homogeneous baking is guaranteed even at full load. Products are well baked not only inside, on the surface, but also a golden crust is obtained.
The main advantage is the ability to cook at the same time different kinds products without mixing flavors.
convection + humidity
Temperature: 0 to maximum
Humidity 0% to 10˚0%
Cooking is carried out with hot air with different percentages of humidity, according to the type of food.
Steam cooking
Temperature from 105 to 115˚С
Steam cooking.
The use of ventilation steam is expected every time the effect of boiling (cooking) is needed.
nutritional ingredients, appearance and the weight of the products remains unchanged. With this type of cooking, the food does not lose liquid.
Cooking is done with a combination of hot air and steam. Cooking time has been reduced. Products remain moist and almost do not change in weight.
1.2 Other cooking times.
The ability to set the temperature and steam according to your desire allows you to implement other types of cooking:
Recovery (regeneration) of products
Temperature: 0 to maximum
Steam: 0% to 100%
Low temperature cooking
Temperature below 100˚С
Steam from 0% to 100%
Cooking changes.
Temperature
Precise temperature control guarantees the correct cooking of food, both outside and inside.
The temperature is lower than it should be drying, not cooking food
The temperature is higher than it should brown the surface, while the inside remains uncooked (sometimes this is necessary, for example with meat products).
Its change depends on the amount of products placed in the oven. More products require more time and vice versa.
Less cooking time than required does not cook food well.
More time burns products.
The combination of temperature and steam allows you to cook different types of food, depending on the type of food you want to cook.
The ability to set the temperature and steam as you wish allows you to cook in the trivalent way: convection, steam and a combination of steam and convection.
If you set the steam to maximum and the temperature is around 105°C, steam cooking is possible. For example, vegetables.
Extraction of humidity by the Venturi system.
This function is used when you need to dry food in the oven. We dry the products in a chamber by extracting moist air with a venturi system.
With the extraction of moisture, foods become crispy and crumbly on the outside (such as bread and meat), while the inside is dry with a uniform texture.
If the food itself is damp, you can dry out that moisture with a venturi system. Thus, the climate inside the chamber remains always dry.
Fan stop.
This function is needed for the products to rise inside the chamber.
Moreover, it is needed to delay the start of cooking.
Number of products
The amount of food affects the cooking time.
The more products, the more time cooking and vice versa.
Use of trays - wire grate
Aluminum trays: pastries, not frozen bread
Stainless steel trays: first course, meat, fish, potatoes
Wire grates: hot dogs, sausages, sausage, frozen bread, frozen pizza
IV Maintenance
Normal
Special tech. service.
All operations for maintenance must be carried out by a qualified worker. Before starting, turn off the machine and wait for it to cool down.
2.1 Replacing the internal lamp.
To replace the inside you need:
Disable machine
Remove side guards
unscrew glass coating and replace the lamp
Replace glass cover
Install side guards
2.2 Replacing fuses
Press lightly on the fuse holder cover, then turn 20˚ counterclockwise
Remove fuse holder cover
Remove fuse
Replace it
Install fuse holder cover
Lightly press the cover and turn 20˚ clockwise
2.3 Safe Touch
This machine has a manual safety thermostat. It is necessary to protect the machine from overheating.
This thermostat can be reached by removing the black cap located at the bottom of the oven, if you want to turn it on, press the button in the center of the thermostat.
The most common faults.
Malfunction | Cause | elimination |
The oven is completely off | Incorrect voltage el. systems | Fix the stress |
Safety thermostat intervention | fix the thermostat |
|
Intervention of one of the power fuses | Replace fuse |
|
Incorrect connection to email. system | Check your email connection. system |
|
Humidity is turned on, but water does not come out of the tube | Water inlet closed | Open the water inlet |
The connection to the water supply system or to an external tank is not correct. | Check the connection to the water supply system or to an external tank |
|
If the oven is connected to an external tank, there is no water in the tank. | Pour water into the tank |
|
Filter clogged with dirt | Clean filter |
|
The oven does not turn on even when the time is set and the On, Off button is pressed | The door is open or not properly closed | Close the door properly |
Damaged magnetic switch | Contact a specialist |
|
EE1 appears on the temperature display | The wires that connect to the camera do not connect to the power source | Check connection |
Damaged camera sensor | Contact a specialist |
|
EE2 appears on the temperature display | The wires connected to the internal temperature are not connected to the power source. | Check connection |
Damaged internal temperature control sensor | Contact a specialist |
|
Water comes out of the chamber even when closed door | Damaged door seal | Contact a specialist |
Loose door mechanism | Contact a specialist |
|
Furnace light does not turn on | Lamp burnt out | Replace lamp |
The lamp is weak | spin the lamp |
|
Cooking uneven˚ | Fan running in the wrong direction | Contact a specialist |
One of the fans is not working | Contact a specialist |
|
One of heating elements broken | Contact a specialist |
|
The flame goes out | Fuse | Replace |
Lack of gas | Contact a specialist |
|
Gas pressure too low | Contact a specialist |
|
The flame does not ignite | Reverse phase - neutral | Rotate socket 180˚ |
Fuse | Replace |
|
Lack of gas | Contact a specialist |
|
Gas pressure too low | Contact a specialist |
|
The flame does not ignite even with the correct inlet pressure | Broken gas solenoid valve | Contact a specialist |
Dirty gas solenoid valve | Contact a specialist |
|
Non graduated solenoid valve | Contact a specialist |
Digital oven control
Cooking time display indicator
Programming 4 baking periods
Cooking time button
Green indicator - adjustable steam
Red indicator - adjustable drying percentage
climate control button
Motor stop
Setting the cooking chamber temperature
Setting the central temperature
Setting the temperature difference between the central and baking chamber
Temperature button
Start/stop a cooking program
Adding 1 minute to cooking time
light button
Program button
On off. Furnaces
Switching control from oven to proofer
Adding water to the proofer
