39
UPV Series
39
ScreenLok
®
Flame Arrestor Cleaning
Step 1. Position gas control power switch to the “OFF” position.
Step 2. Remove outer door.
Step 3. Remove outer jacket door and inner door per service procedure XIII on page 34.
Step 4. Disconnect main burner feedline (¾” wrench), pilot tube (
7
/
16
” wrench) and
igniter/flame sensor wire from gas control 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 the burner cleaning procedure on
page 16 and reinstall burner assembly into combustion chamber.
Step 7. Reconnect feedline, pilot tube and igniter/flame sensor wire to the gas control.
Step 8. Reinstall outer jacket door and inner door per service procedure XIII on page 35.
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.
NOTICE
Some models are not equipped with the
ScreenLok
®
Flame Arrestor.
