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2) The dryer is equipped with a Direct Spark Ignition (DSI) system, which has internal diagnostics. If
ignition
is not established after the first attempt, the heat circuit DSI module will “LOCKOUT” until
it is manually reset. To reset the DSI system, open and close main door and restart dryer (press the
“ENTER/START” key).
NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.
3) Once ignition is established, a gas pressure test should be taken at the gas valve pressure tap of
each dryer to assure that the water column (W.C.) pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the gas valve pressure tap)...
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.
b. Electric Models
1) Check the oven contactors to insure that the electric oven is cycling properly.
c. Steam Models
1) Check to insure that steam damper is functioning properly.
a) The steam damper should not “slam” (open/closed) when it reaches the end of (piston) travel.
Additionally, the steam damper should not bind or stop during travel. If either of these conditions
occur, the flow control must be adjusted. (Refer to the Cool Down Mode in top illustration
on page 34 for air adjustment instructions.)
6. Make a complete operational check of ALL safety related circuits (i.e., lint drawer switch and sail switch
on gas models).
NOTE: To check for proper sail switch operation, 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 heat (burner) does activate, shut the dryer off and make necessary adjustments.
7. Reversing basket (tumbler) dryers should never be operated with less than a 79 lb (35.4 kg) load (dry
weight), since the load’s weight affects basket (tumbler) coast time during a direction reversal command.
It is important that the basket (tumbler) come to a complete stop prior to starting in opposite direction.
a. Microprocessor Controller (Computer) Dryer Models
1) Spin and dwell (stop) times are not adjustable in the Automatic Mode and have been preprogrammed
into the microprocessor controller (computer) for a 120-second spin time and a 5-second dwell
(stop) time.
2) Spin and dwell (stop) times are adjustable in the Manual (Timed) Mode.