Blodgett CB24-140G Скачать руководство пользователя страница 20

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7.0 TROUBLESHOOTING

BURNERS PRODUCE CARBON DEPOSITS

1. Wrong size orifices.

2. Burner air not adjusted properly.

3. Wrong gas supply.

4. Incorrect pressure at supply.

PILOT DOES NOT LIGHT

1. Gas supply to unit is OFF.

2. Power supply is OFF.

3. Gas control knob is OFF.

4. Dirty or loose wire connection to module - clean and/or tighten.

5. Ignitor cable, shorting out - check that it is not in contact with metal or damaged; may

require replacement.

6. Defective control or module.

7. Unit has gone into 100% lockout - turn off and try again in five minutes.

8. Dirty flame sensor - clean with emery cloth.

9. Cracked ceramic insulator - replace pilot burner/ignitor sensor.

10. Too much draft.

WARNING: The boiler and its parts are hot. Use care when operating, cleaning,
or servicing the boiler.

Содержание CB24-140G

Страница 1: ...AS STEAM BOILER CABINETS INSTALLATION OPERATION MAINTENANCE BLODGETT OVEN COMPANY www blodgett com 44 Lakeside Avenue Burlington Vermont 05401 USA Telephone 800 331 5842 802 860 3700 Fax 802 864 0183 S00043 Rev A 5 04 ...

Страница 2: ...be posted in a prominent location This information shall be obtained by consulting the local gas supplier Do not attempt to operate this unit in the event of a power failure Keep the appliance area free and clear from combustibles Do not obstruct the flow of combustion and ventilation air Adequate clearances must be maintained for servicing and proper operation WARNING Improper installation operat...

Страница 3: ...GE Service Connections 4 1 0 Installation Instructions 5 2 0 Service Connections 8 3 0 Operation Instructions 10 4 0 Operation Instructions for CSD1 Equipped Units 13 5 0 Periodic Maintenance 16 6 0 Adjustments 19 7 0 Troubleshooting 20 ...

Страница 4: ... 2 IPS piped to open floor drain No Solid Connection COLD WATER 3 8 O D tubing at 25 50 PSI 170 345 kPa GAS CONNECTION 3 4 IPS supply line required Natural Gas min 7 178mm Water Column Propane min 11 279mm Water Column STEAM TAKE OFF 3 4 IPS Less than 60 PPM Less than 20 PPM Less than 13 PPM Less than 1 5 PPM Water quality is the major factor affecting the performance of your appliance If you are ...

Страница 5: ...evation has been installed LOCATION The installation location must be kept free and clear of combustibles Do not obstruct the flow of combustion and ventilation air Clearance from combustible construction must be a minimum of 3 inches from the sides and 6 inches from the back The appliance should be installed on a noncombustible floor Provide adequate clearances for cleaning maintenance service an...

Страница 6: ... STANDARDS The boiler must be installed in accordance with Gas installation to conform to local codes or in absence of local codes with the National Fuel Gas Code ANSI Z223 1 NFPA 54 In Canada installation to be in accordance with CSA B149 1 Natural Gas and Propane Installation Code 1 The appliance and its individual shut off valve must be disconnected from the gas supply piping system during any ...

Страница 7: ...rposes It is recommended that a canopy extend 6 inches past the appliance and be located 6 feet 6 inches from the floor Filters should be installed at an angle of 45 degrees or more with the horizontal This position prevents dripping of grease and facilitates collecting the run off grease in a drip pan usually installed with the filter A strong exhaust fan tends to create a vacuum in the room and ...

Страница 8: ... the boiler indicates the type of gas your unit is equipped to burn DO NOT connect to any other gas type Keep the appliance area free and clear from combustible substances Do not obstruct the flow of combustion and ventilation air 2 A 3 4 NPT line is provided at the rear for the connection Each boiler is equipped with an internal pressure regulator which is set at 3 5 W C manifold pressure for nat...

Страница 9: ...oap and water solution Do not use an open flame Do not connect the appliance to the electrical supply until after the gas connection has been made ELECTRICAL CONNECTIONS WARNING ELECTRICAL GROUNDING INSTRUCTIONS This appliance is equipped with a three prong grounding plug for your protection against shock hazard and should be plugged directly into a properly grounded three prong receptacle Do not ...

Страница 10: ...inet Main Power Switch ON fills the boiler tank and turns the boiler controls on You should allow 20 minutes to fill the tank and generate steam OFF shuts off the boiler controls and opens the automatic blowdown valve emptying the boiler tank and releasing water and steam to the drain This should be done at least once daily to remove sediment lime or scale Pilot Light Indicates main power is ON Bo...

Страница 11: ...on for about 30 seconds and release Observe that the pilot burner flame stays on If at any time the flame should become extinguished a 5 minute period of complete shut off of gas supply is required before relighting 4 Turn dial to ON and burners should ignite Steam generation will now commence and be completed in approximately 15 minutes Steam generation should reach approximately 11 psi as indica...

Страница 12: ...ower switch back on 4 Once the pilot is lit and the required water level has been reached the main burners will ignite Burner will cycle to meet the steam pressure required Steam pressure should reach approximately 11 psi as indicated on the pressure gauge on the boiler DAILY SHUT DOWN Turn power switch off Open blowdown valve if so equipped COMPLETE BOILER SHUT DOWN If boiler is not intended to b...

Страница 13: ... If at anytime the flame should become extinguished a five 5 minute purging is required before relighting is attempted Daily Startup Procedure 1 Close the manual blowdown valve if so equipped 2 Examine that the pilot burner flame is burning If the pilot burner is out a five 5 minute period of complete gas supply shut off is required before relighting Follow initial start up instructions above 3 Op...

Страница 14: ...he gas valve is controlled by pressure sensing devices On initial operation of the boiler steam generation should reach 11 psi in approximately 15 minutes At this point the Operating Pressure switch will close the gas valve When pressure drops to 9 psi the pressure switch opens the gas valve and ignition should occur Should the pressure rise to more than 14 5 psi the Overrride pressure switch will...

Страница 15: ...is installed on the boiler Should the pressure exceed the limit of this device the boiler will be shut down and be put into a state of lockout The Pressure pilot light Red and the Stand By pilot amber will come on Should this device fail to operate the safety relief valve will open Low Water Condition A second low water safety cut off is supplied with the boiler Should the water level fall below n...

Страница 16: ...t does not interfere with the movement of the float in the control Control must be flushed at least once a day CAUTION Protect yourself When flushing control hot water and steam will flow out of the drain When flushing control note water level in gauge glass allow the boiler to fill if necessary and also to come up to temperature Before flushing control note that water level in gauge glass is with...

Страница 17: ...ipped during operation once a week to ensure that it is functioning properly 3 Clean around burners and orifices if lint has accumulated 4 Visually ensure carry over ports are unobstructed 5 Visually check that the flue is not obstructed CLEANING DO NOT allow water near the electrical components At the end of the day turn the Main Power Switch OFF automatic blowdown drains the boiler tank or if eq...

Страница 18: ...Deliming assembly DPA 1 available from your dealer For appliances equipped with CSD 1 descaling solution must be introduced through hand hole 4 Replace 3 4 pipe plug securely 5 Open water supply to appliance allowing water to fill boiler to required level 6 Let appliance cycle allowing two hours for descaling and cleaning DO NOT TURN STEAM ON TO CONNECTED APPLIANCES OR TO UPPER COMPARTMENTS 7 Open...

Страница 19: ... the high signal to switch at 13 psi on the gauge and the low signal to 11 psi 3 OPERATING PRESSURE SWITCHES Set the high signal to switch at 11 psi on the gauge and the low signal to 9 psi 4 Release pressure in boiler to below 9 psi Burner will come on Once pressure has reached 11 psi burners will shut off Repeat this process several times to make sure burners come on at 9 psi and shut off at 11 ...

Страница 20: ...ire connection to module clean and or tighten 5 Ignitor cable shorting out check that it is not in contact with metal or damaged may require replacement 6 Defective control or module 7 Unit has gone into 100 lockout turn off and try again in five minutes 8 Dirty flame sensor clean with emery cloth 9 Cracked ceramic insulator replace pilot burner ignitor sensor 10 Too much draft WARNING The boiler ...

Страница 21: ...ure switch may need to be replaced if relay is operating 10 Gas control may also require replacement if energized but not operating SAFETY RELIEF VALVE BLOWS 1 Defective valve 2 Pressure too high pressure switch requires adjustment lower or may be defective WATER NOT BEING SUPPLIED TO BOILER 1 Water supply is OFF 2 Defective water fill Solenoid Valve 3 Water level control clogged or defective unab...

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