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30 American Dryer Corp. 113231-4
NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.
NOTE: Gas dryers are equipped with a Direct Spark Ignition (DSI) system, which has internal
diagnostics. If ignition is not established within three (3) attempts, the heat circuit in the DSI
module will “LOCK OUT” until it is manually reset. To reset the DSI system, open and close
the main door and restart the dryer.
c. A gas pressure test should be taken at the gas valve pressure tap of each dryer to ensure that the
water column (W.C.) pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the pressure tap of the gas valve body):
Natural Gas ............................. 3.5 inches (8.7 mb) water column.
Liquid Propane (L.P.) Gas ....... 10.5 inches (26.1 mb) water column.
IMPORTANT: There is no regulator provided in an L.P. dryer. The water column pressure must be
regulated at the source (L.P. tank), or an external regulator must be added to each
dryer.
4. Steam Dryers
Check to ensure that steam damper is functioning properly: the steam damper should not “slam” (open or
closed) when it reaches the end of (piston) travel. Additionally, the steam damper should not bind and/or
stop during travel. If either of these conditions occur, the flow control must be adjusted. Refer to the
bottom illustration on
page 26 for steam damper air piston (flow control) operation adjustment instructions.
5. Electrically Heated Dryers
Check to ensure that electric oven/contactor assembly is activating.
6. Make a complete operational check of
ALL safety related circuits:
a. Door Switch(es)
b. Hi-Limit Thermostats
c. Sail Switch (for Gas and Electric Models Only)
NOTE: To check for proper sail switch operation (for gas and electric models only), open the main
door and while holding main door switch plunger in, start dryer. Dryer should start but heat
circuit should not be activated (on). If the heat system is activated, the sail switch is
improperly adjusted and must be adjusted by bending the actuator arm of the sail switch
toward the burner box. If the actuator arm is bent too far toward the burner box of the dryer,
the dryer may not have heat when needed. After any adjustment to the sail switch, the above
procedure must be repeated to verify proper operation of the sail switch.
7. The dryer should be operated through one (1) complete cycle to ensure that no further adjustments are
necessary and that
ALL components are functioning properly.
Basket (TUMBLER) Coating
The basket (tumbler) is treated with a protective coating. We suggest dampening old garments or cloth material
with a solution of water and nonflammable mild detergent and tumbling them in the basket (tumbler) to remove
this coating.