Alliance Laundry Systems Drying Tumblers 175 Pound Capacity - Manual (Page 18)

Page 15
TROUBLE CAUSE REMEDY
Replace fuse.
Check continuity across contacts, opened & closed. If
defective, replace door switch.
Clean out lint compartment daily. Check back draft
damper for foreign objects, lint accumulation or other
causes that may prevent damper from opening. Check
duct work for lint build-up. Refer to Installation Manual
to ensure duct work and make-up air openings are
properly sized. Check exhaust outlet. If a screen has
been improperly installed on the outlet, it may be
clogged with lint or frozen over in Winter. Never install
a screen on the exhaust outlet. Vacuum within dryer
drops to .09 inches of water column, or less, for normal
operation of dryer, vacuum reading (in inches of water
column) should range between .15 and .3 inches.
Vacuum reading can be made with a vacuum U-gauge
by removing a sheet metal screw in the back panel or
right panel at front bottom corner and inserting the
rubber tube of the vacuum gauge into screw opening.
Refer to Air Switch Adjustment section.
Check continuity across contacts, opened and closed.
If defective, replace switch with power off. Check
manifold pressure and adjust to pressure specified on
rating plate. If this pressure cannot be obtained, have
gas supplier check main pressure.
Dryer is orificed for type of gas specified on rating
plate. Check with gas supplier to determine specifica-
tions for gas being used. If different from rating plate,
contact factory to obtain proper orifices.
Turn power on.
Line fuse or heater circuit fuse
blown to unit
Defective door switch
Air switch not operating
Air switch out of adjustment
Air switch defective
Gas pressure too low
Improper orifice
Electric power to heating unit
turned off
Dryer runs, but no heat
(continued).
Troubleshooting Chart