Screenlok ® Flame Arrestor Cleaning - Bradford White URG1D30T*N Service Manual

ULN Res. D Series
®
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 IX on page 26.
Step 4. Disconnect main burner feedline (3/4" 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
shop vacuum to remove any scale or other debris accumulation. Then, using a
soft brush, clear jacket openings from any dirt, dust, restrictions or other
obstructions.
Step 6. Remove any debris from the burner assembly per procedure D-I on page 14 and
reinstall burner assembly into combustion chamber.
Step 7. Reconnect the feedline, pilot tube and igniter/flame sensor wire to the gas
control
Step 8. Reinstall the outer jacket door and the inner doors per service procedure D-IX
on page 26.
To resume operation follow the instructions located on the lighting instruction label or the
lighting instructions located in the Installation and Operation manual.
®
Flame Arrestor using a stiff brush, compressed air and/or
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