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I. PREOPERATIONAL TESTS
ALL dryers are thoroughly tested and inspected before leaving the factory. However, a preoperational test
should be taken before the dryer is publicly used. It is possible that adjustments have changed in transit.
1. Turn on electric power to dryer. Open ALL gas shutoff valves.
2. Put the proper number of coins into the coin meters. The computer displays will show “Push.”
3. Start dryer, using a “High Temp” selection.
4. To remove any air from the gas line, run each basket (tumbler) for about 5 minutes.
NOTE: The dryer has a safety device (I.R. sensor) which shuts off the gas flow if flame is not
established at the gas burner because of air in the gas lines. The ignition system will
continue to recycle itself until flame is established.
5. Make a complete operational check of ALL the operating controls to be sure that the timing is correct and
temperatures are properly set.
6. Make a complete operational check of ALL safety related circuits: door switch(es), hi-limit thermostat, sail
switch, basket (tumbler) safety thermostats, etc.
7. A gas pressure test should be taken at each gas valve pressure tap of ALL dryers, to assure that water
column (W.C.) pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at the gas valve pressure tap):
Natural Gas ------------------ 4.0 inches (9.9 mb) water column (3-1/2” manifold).
Liquid Propane (L.P.) Gas --- 11.0 inches (27.4 mb) water column (10” manifold).
8. If computer program changes are required, refer to the computer programming manual, which was shipped
with the dryer.
9. Each basket (tumbler) should be operated through one (1) complete cycle to assure 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.
10. On models manufactured for 3-phase (3ø) electrical input voltage, check the electric service phase sequence.
While the dryer is operating, check to see if the baskets (tumblers) are rotating in the clockwise (CW)
direction (when viewed from the front). If so, the phasing is correct. If the baskets (tumblers) rotate
counterclockwise (CCW), the phasing is incorrect. Correct by reversing two (2) leads at connections L1,
L2, or L3 of power supply to the dryer.