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113247-3 www.amdry.com 29
Preparation for Operation/Start-Up ___
The following items should be checked before attempting to
operate the dryer:
• Read all “CAUTION,” “WARNING,” and “DIRECTION”
labels attached to the dryer.
• Check incoming supply voltage to be sure that it is the
same as indicated on the data label. In the case of 208
VAC or 240 VAC, the supply voltage must match the
electric service exactly.
• ELECTRIC MODELS – The sail switch damper assembly
was installed and adjusted at the factory prior to
shipping. However, each sail switch adjustment must be
checked to ensure that this important safety control is
functioning. (Refer to Sail Switch Adjustment in the
Preoperational Test section).
• Be sure all back panels (guards) and electric box covers
are in place.
• Be sure the service doors are closed and securely in
place.
• Be sure the lint door/drawer is securely in place.
• Rotate the tumbler (drum) by hand to be sure it moves
freely.
• Check bolts, nuts, screws, terminals, and fittings for
tightness and security.
• STEAM MODELS – check to ensure that a clean, dry,
regulated air supply (80 psi [5.51 bar]) is on the dryer
(with air-operated damper system only).
• STEAM MODELS – Check to ensure all steam shutoff
valves are open.
• STEAM MODELS – Check steam damper operation.
• Check tumbler bearing setscrews to ensure they are all
tight.
• Check that the vent is connected to the dryer and is
exhausted to the outdoors.
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.
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 Steam Damper Air Piston (Flow Control)
Operation Adjustment instructions in the Steam Information
section.
!
Electrical Dryers
Check to ensure that electric oven/contactor assembly is
activating.
Safety Related Circuits
Make a complete operational check of all safety related
circuits:
• Door Switch(es)
• Hi-Limit Thermostats
• Sail Switch (for Electric Models Only)
Sail Switch Adjustment – To check for proper sail switch
operation (for 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.
The dryer should be operated through 1 complete cycle to
ensure that no further adjustments are necessary and that
all components are functioning properly.
Make a complete operational check of all operating controls.
For microprocessor model check controller (computer)
programs/selections: each microprocessor controller
(computer) has been preprogrammed by the factory with the
most commonly used parameter (program) selections. If
computer program changes are required, refer to the
computer programming manual which was shipped with the
dryer.
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.
3-Phase (3ø) Electric Service
Check the electric service phase sequence (3-phase [3ø]
models only). While the dryer is operating, check to see if the
blower/fan is rotating in the proper direction. Looking from
the front, the blower/fan should spin in the CW direction. If it
is, the phasing is correct. If the phasing is incorrect, reverse
2 of the 3 leads at connections L1, L2, L3 of the power supply
to the dryer.
Important
If the blower/fan is rotating in the wrong direction, it
will drastically reduce drying efficiency and it can
also cause premature component failure.
Spin and Dwell (Stop) Times Adjustment
Reversing tumbler dryers should never be operated with less
than a 66% load (dry weight), since the load’s weight affects
tumbler coast time during a direction reversal command. It
is important that the tumbler come to a complete stop prior to
starting in opposite direction.