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11. Check bolts, nuts, screws, terminals, and fittings for security.
12. Check to ensure air supply (80 psi [5.51 bar]) is connected to the dryer.
13. Check tumbler bearing setscrews to ensure they are ALL tight.
J. PREOPERATIONAL TESTS
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.
1. Turn on electric power to the dryer.
2. Make sure the main door is closed and the lint drawer is securely in place.
3. Refer to the Operating Instructions for starting your particular model dryer.
4. Check to ensure that the tumbler starts in the clockwise (CW) direction. Additionally, check the direction of the
blower motor impellor (fan) to ensure that the impellor (fan) rotates in the clockwise (CW) direction as viewed
from the front. If it is, the phasing is correct. If the phasing is incorrect, reverse two (2) of the leads at L1, L2, or
L3 of the power supply connections made to the dryer.
IMPORTANT: The dryer blower motor/pulley that drives the impellor/fan (squirrel cage) when viewed from
the back of the dryer must turn in the counterclockwise (CCW) direction, otherwise the dryer
efficiency will be drastically reduced and premature component failure can result.
5. Heat Circuit Operational Test
a. Gas Models
1) When the dryer is first started (during initial start-up), the burner has a tendency not to ignite on the first
attempt. This is because the gas supply piping is filled with air, so it may take a few minutes for this air to
be purged from the lines.
2) The dryer is equipped with a Direct Spark Ignition (DSI) system, which has internal diagnostics. If ignition
is not established after three (3) attempts, the heat circuit DSI module will LOCKOUT until it is manually
reset. To reset the DSI system, open and close the main door and restart the dryer (press the “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 ensure 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.