CLEAN BURN CB 140, Operator'S Manual

Page: 88 / 142

Operator's Manual: Models CB-1750, CB-2500 & CB-3250
9-2
Periodic Burner Inspection
Following initial start up of the burner, you should inspect the operation of the burner periodically--ideally on a
monthly basis. Doing so ensures that the system is functioning efficiently and safely.
Follow these guidelines for inspecting the operation of the burner:
• Visually inspect the flame length through the observation
CAUTION
WHEN OPENING INSPECTION PORT
PORT MAY BE HOT
PROTECT HANDS
WEAR SAFETY GOGGLES
KEEP FACE AWAY
OPEN PORT SLOWLY
port; the flame should extend no more than one-half of
the way down the combustion chamber.
• If the flame is diminishing or displays wide
variations, clean the canister filter and check
valve/screen (procedures provided in this
section).
• If the flame is firing too strongly (i.e. flame touches
back and/or side walls of the combustion chamber),
check the air pressure setting (see following
guideline).
• Check the air pressure by observing the air gauge; proper air pressure settings are provided in
Section 6. DO NOT overfire the burner; doing so on a continual basis will damage the furnace.
• Check the combustion air band setting for the proper opening and clean away any dust/debris as
necessary. Note that the air band should NEVER be set fully open or closed.
• Check the draft over fire reading as specified in Section 8.
Figure 9A - Component Detail of the CB-525-S2 Burner
I88583
AIR REGULATOR
COVER PLATE
LOCKING NUT
AIR GAUGE
OIL GAUGE
COMBUSTION
AIR BAND