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20 American Dryer Corp. 113237-4
Preoperational Test ___________________
All dryers are thoroughly tested and inspected before leaving
the factory. However, a preoperational test should be
performed before the dryer is publicly used. It is possible
that adjustments have changed in transit or due to marginal
location (installation) conditions.
Turn on electric power to the dryer.
Refer to the operating instructions for starting your particular
model dryer.
Gas Models Only
When a gas dryer is first started (during initial start-up), it
has a tendency not to ignite on the first ignition attempt. This
is because the gas supply piping is filled with air, so it may
take a few minutes for the air to be purged from the lines.
Note
During the purging period, check to be sure that all
gas shutoff valves are open.
Gas model dryers are equipped with an ignition system, which
has internal diagnostics. If ignition is not established after
one time, the heat circuit in the ignition module will attempt
two more ignitions (total of three ignition attempts). If there
is no flame after the third ignition attempt, the module will
lockout until it is manually reset. To reset the ignition system,
open and close the main door and restart the dryer.
A gas pressure test should be taken at the gas valve pressure
tap of each dryer to ensure that the water column pressure is
correct and consistent.
Note
Water column pressure requirements (measured
at the pressure tap of the gas valve body):
Natural Gas ___ 3.5 in WC (8.7 mb).
L.P. Gas ______ 10.5 in WC (26.2 mb).
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.
Make a complete operational check of all safety related
circuits:
• Door Switch(es)
• Hi-Limit Thermostats
• Cycling Thermostat
• Gas and Electric Models Only – Sail Switch
Note
The sail switch can be checked for proper
operation by opening the lint trap door. While
pushing the lint door switch in, start a drying cycle. The
heating unit should not activate (wait 30-seconds). If heat
does activate, make the necessary adjustments to the sail
switch.
Make a complete operational check of all operating controls.
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Note
If computer program changes are required, refer to
the computer programming section of the manual
supplied with the dryer.
The dryer should be operated through one complete cycle to
ensure that no further adjustments are necessary and that all
components are functioning properly.
Tumbler Coating
The 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 tumbler to remove this coating.
Check the electric service phase sequence (3-phase [3ø]
models only). While the dryer is operating, check to see if the
blower motor (impellor/fan) is rotating in the proper direction.
Looking from the front, the blower motor (impellor/fan) should
spin in the clockwise direction. If it is, the phasing is correct.
If the phasing is incorrect, reverse two of the three leads at
connections L1, L2, and L3 of the power supply to the dryer.
Important
If the blower motor (impellor/fan) is rotating in the
wrong direction, it will drastically reduce drying
efficiency and it can also cause premature component
failure.
Preoperational Instructions __________
Microprocessor Controller (Computer)
Coin Models
When the microprocessor controller (computer) is in the ready
state, the L.C.D. screen will display “Ready, Insert $XX.XX
(amount) to Start”.
Insert coin(s). Once the correct “Amount to Start” has been
inserted, the L.C.D. will display “Select Temperature”.
Select temperature by pressing “HI,” “MED,” or “LO”. The
cycle will start and the L.C.D. will display the dry cycle selected
and the remaining time.
The dryer will continue through the drying and cooling cycles,
until the vended time has expired.
Note
To stop dryer, open main door or press the
“Pause” key. Continuation of the cycle will resume
only after the door has been closed and any of the three
temperature selections is pressed.
Upon completion of the drying and cooling cycles, the tone
(buzzer) will sound and the dryer will go into the Anti-Wrinkle
Mode for 99 minutes, or until the main door has been opened.
Impor tant
For more detailed information regarding the
microprocessor controller (computer) on your
dryer, refer to the microprocessor user’s manual included
with the dryer.
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