Assessments - 3, GPA: 3 ( )

Fabricante : Stovax Arquivo Tamanho: 2.8 mb Arquivo Nome : Língua de Ensino:

coal, soot etc.) which could short the spark, clear the area. From Ignition Fault Finding Chart Part 1. Consult the Users Instructions, retry. Operate the valve to light the pilot, does the valve ‘click’? Is the valve being operated properly? Is the pilot burner horizontal? See diagram 1 on page 20. Reset the electrode gap, retry. Replace the pilot unit. Replace the electrode lead and retry. Remove the electrode lead from electrode with insulated pliers. Hold the tip 4mm from the pilot pipework, is there a spark when the valve ‘clicks’? Check the defective or damaged control knob spindle or cam operation. Check for correct location of piezo components. Correct and retry. Is the electrode wire detached from the piezo in the valve? Replace the combined lead, retry. Remove the electrode lead from the piezo. Operate the valve. Does a spark jump from the piezo to the valve body? Has ignition lead become detached or is connection poor? Correct and retry. NO NO YES NO NO NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES YES YES YES YES YES PILOT WILL NOT STAY LIT OR FIRE GOES OUT IN USE SYSTEM OK FLAME FAILURE FUNCTIONAL CHECK 3 Ensure there is no debris around the pilot assembly, (e.g. coal, soot etc.) which could short the spark, clear the area. Light the pilot and keep the control knob pushed in at least 10 seconds before letting go. With the pilot running, is the gas pressure stated on the databadge? With the fire running on full, is the gas at the pressure stated on the databadge? Run for no more than 60 seconds, turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds? Tighten the connection and retry. Run for 60 seconds, turn off, time interval until mag unit shuts with a click. Is this greater than 7 seconds? Will the pilot stay lit? Is thermocouple connection good in back of valve? Replace the thermocouple. Change the pilot Will pilot stay alight? unit. Change mag unit. Is the pilot flame of the correct length? See diagram 1 on page 19. Problem is with the pipework or fittings which lead to the fire. Correct and retry. 22 SERVICING INSTRUCTIONS REPLACING PARTS 1. GENERAL 1.1 All principal components can be replaced without removing the stove from its installation, although it is essential that the gas supply to the appliance is turned off at the isolation device before proceeding further. 1.2 If, for any reason, the flue has to be removed from the stove, the seals must be replaced. 2. MAIN BURNER 2.1 Turn the gas supply off at the isolation device, remove the door and place to one side, carefully remove the ceramic fuel bed components. 2.2 Remove the three securing screws, two at the rear and one at the front left hand side. See diagram 1. Raise the left hand side of the burner to clear the bracket, draw the left hand side forward. The burner venturi is engaged over the injector. When removing the burner be sure to clear the injector, this will release the right hand side of the burner. Take care when removing the burner so as not to damage the pilot burner. 2.3 To replace the burner, engage the venturi over the injector ensuring the burner sits on top of the fixing bracket. Push the burner to the right and whilst holding, insert the three fixing screws. NOTE: BEFORE REPLACING THE BURNER, ENSURE THE SILICONE SEAL AROUND THE INJECTOR IS INTACT AND CHECK THAT VENTURI COVER IS ATTACHED. AR1605 1 3. PILOT UNIT The pilot assembly consists of five components, which can be individually changed, these are: 1) Pilot burner bracket 2) Pilot injector 3) Electrode 4) Thermocouple 5) Gasket. 3.1 Turn the gas supply off at the isolation device, remove the door and place to one side, carefully remove the ceramic fuel bed components 3.2 Refer to Section 2 to remove the main burner. Remove the thermocouple baffle taking note of how it is positioned. Refer to Diagram 2 3.3 Remove the two fixing screws from the pilot bracket, see diagram 3. Gently draw the assemble away from the firebox to give access to the nuts and ignition lead. NOTE: TAKE CARE NOT TO DAMAGE THE GASKET. AR1609 2 AR0614 3 23 SERVICING INSTRUCTIONS REPLACING PARTS 3.4 To remove the pilot injector, undo the compression nut on the pilot feed pipe and withdraw the injector which will be hooked onto the olive. When replacing an injector always make sure it is hooked onto the olive before inserting it into the pilot burner. See diagram 4. 3.5 To remove the electrode, disconnect the ignition lead and undo the retaining nut. The electrode can now be removed, note the orientation of the electrode terminal when reassembling. See diagram 5. 3.6 To remove the thermocouple, undo the retaining nut and withdraw the thermocouple, see diagram 6. Undo the thermocouple from the back of the gas valve, see diagram 7, arrow A. Reassemble in reverse order. Do not overtighten. 3.7 To remove the gasket, disconnect all the above components and withdraw the gasket. If it is damaged, replace with a new item. Always replace the gasket first w...

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