40
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 the 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 the
top illustration
on
page 37
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 the necessary adjustments.
7. A reversing basket (tumbler) dryer
should never be
operated with less than a 75 lb (34 kg) load (dry
weight). The size of the load will affect the coast-down and dwell (stop) times. The basket (tumbler) must
come to a complete stop before starting in the opposite direction.
a. Microprocessor Controller (Computer) Dryers
1) Spin and dwell (stop) times are not adjustable in the Automatic Mode and have been preprogrammed
into the microprocessor controller (computer) for 120-seconds spin time and a 5-second dwell (stop)
time.
2) Spin and dwell (stop) times are adjustable in the Manual (timed) Mode.
Summary of Contents for AD-115ES II
Page 25: ...21 ...