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eenLok Flame Arrest
or Cleaning
Step 1. Rotate knob of combination thermostat gas valve to the off position.
Step 2. Remove outer jacket door.
Step 3. Remove inner door per SERVICE PROCEDURE RG-I, step 3a through 3e.
Step 4. Disconnect main burner feed line (3/4 wrench), pilot tube (7/16 wrench)
and thermocouple (3/8) wrench from combination thermostat gas valve
and remove burner assembly from combustion chamber.
Step 5. Clean ScreenLok Flame Arrestor using stiff brush, compressed air and/or
shop vacuum to remove any scale or other debris accumulation. Using a
soft brush, clear jacket openings from any dirt, dust, restrictions or other obstructions.
Step 6. Remove any debris from burner assembly per SERVICE PROCEDURE RG-V and reinstall burner
assembly into combustion chamber.
Step 7. Reconnect feedline, thermocouple and pilot tube to the combination thermostat/gas valve.
Step 8 Reinstall inner door per SERVICE PROCEDURE RG-I, steps 4 through 13.
Step 9. To resume operation follow the instructions located on the lighting instruction label or the lighting
instruction located in the installation and operation manual.
SERVICE PROCEDURE RG-VIII
ScreenLok Flame Arrestor Cleaning
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