
76
M413438
Section 6 Adjustments
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the tumbler before servicing.
• Close gas shut-off valve to gas tumbler before servicing.
• Close steam valve to steam tumbler before servicing.
• Never start the tumbler with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
94. MAIN GAS BURNER AIR SHUTTERS
(All Gas Models)
Refer to Figure 48.
Air shutter adjustments will vary from location to
location and will depend on the vent system,
number of units installed, make-up air and line gas
pressure. Opening the shutter increases the
amount of primary air supplied to the burner while
closing the shutter decreases the air supply. Adjust
air shutter as follows:
a. Unlock and open the access door.
b. Start tumbler and check the flame pattern.
Correct air and gas mixture is indicated if flame
pattern is primarily blue with small yellow tips
and bends to the right of the heater section.
Refer to Figure 48. Too little air is indicated if
the flame is yellow, lazy and smoky.
c. To adjust the air inlet shutter, loosen air inlet
adjusting screw. Refer to Figure 48. Control
panel may have to be removed temporarily to
loosen screw.
d. Turn shutter to right or left as necessary to
obtain desired flame intensity.
e. After shutter is adjusted, tighten screw
securely.
f. If shutter is correctly adjusted, but the flame
pattern is straight up, insufficient air is flowing
through the tumbler and airflow switch is
improperly set. A flame pattern that flares to the
right and left indicates that no air is flowing
through the tumbler. Refer to Figure 48
The air inlet shutters on the burner must be
adjusted so sufficient primary air is metered
into the system for proper combustion and
maximum efficiency. Before adjusting the
inlet shutter be sure that all lint is removed
from lint compartment and lint screen.
W281
CAUTION
Figure 48
T047SE3A
T048SE3A
T049SE3A
PROPER
AIRFLOW
INSUFFICIENT
AIRFLOW
NO AIRFLOW
AIR SHUTTER
ADJUSTING SCREWS
AIR SHUTTER
ADJUSTING SCREWS
AIR SHUTTER
ADJUSTING SCREWS