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M412616
Electric Models: If switch remains open, or pops
open and closed during cycle, heating system will
shut off. Cylinder and fan will continue to operate
even though air flow switch is malfunctioning.
Gas Models: If switch remains open, entire unit
will shut down when Push-to-start button is
released. Once tumbler starts and continues to
run, a loss of air flow, air flow switch jams or a
bouncing air flow switch will shut entire tumbler
down.
Counterweight should be adjusted so air flow will
force disc away from cabinet when lint panel is
opened 6 inches (15.24 cm) with a full load. Adjust air
flow switch as follows:
1. Load tumbler.
NOTE: This adjustment is much faster to make
with one person opening lint panel in front and
another adjusting the counterweight in rear of
tumbler.
2. Start tumbler. Open lint panel 6 inches (15.24 cm).
Airflow disc should move away from cabinet,
opening switch contacts and shutting off heat
system. This indicates proper operation and
proper adjustment.
3. If switch is not opening as described in step “2”, it
should be adjusted so it is MORE sensitive.
Depress spring clip and move counterweight
toward disc. Retest by opening lint panel and
continue moving counterweight toward disc until
switch operates as described in step “2”.
4. If switch opens BEFORE lint panel is opened
proper distance, step “2”, it should be adjusted so
it is LESS sensitive. Depress spring clip and move
counterweight away from disc. Retest by opening
lint panel and continue moving counterweight
away from disc until switch operates as described
in step “2”.
To reduce the risk of fire, air flow
switch operation may be affected by a
clogged lint screen, lack of make-up
air, obstructions in the vertical
recirculation stack or in the customer
installed main or collector ducts.
These conditions must be checked
and necessary corrections made
before adjusting air flow switch.
Always adjust air flow at installation.
WARNING
ࡽ
Air flow switch operation is controlled by counter-
weight position on shaft. Moving counterweight either
increases or decreases air flow switch sensitivity.
Figure 30
T041IE3A
AIR FLOW
SWITCH
COUNTERWEIGHT
SPRING
CLIP
DISC
SWITCH
LEVER
MOUNTING
BRACKET
REAR
PANEL OF
TUMBLER
AIR FLOW
SWITCH
VANE
LEVER
AIR
DISC
COUNTERWEIGHT
SWITCH
LEVER
SWITCH
ADJUSTING
SCREWS
SCREW
SPRING
CLIP