American Dryer Corp ML-122D installation manual Preoperational Tests

8. Be sure the lint drawer is securely in place.

NOTE: LINT DRAWER MUST BE CLOSED TO ACTIVATE THE SAFETY SWITCH OTHERWISE THE DRYER WILL NOT START.

9.Rotate the basket (tumbler/drum) by hand to be sure it moves freely.

10.Check bolts, nuts, screws, terminals, and fittings for security.

11.STEAM MODELS - check to insure air supply (80 PSI [5.51 bars]) is connected to the dryer.

12.STEAM MODELS - check to insure ALL steam shutoff valves are open.

13.STEAM MODELS - check steam damper operation.

14.Check basket (tumbler) bearing setscrews to insure they are ALL tight.

K. 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 insure that the basket (tumbler) starts in the clockwise (CW) direction. Additionally, check the direction of the blower motor impellor (fan) to insure 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: Dryer blower motor impellor/fan as viewed from the front must turn in the clockwise (CW) 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 system, which has internal diagnostics. If ignition is not established after the first attempt, the computer will go into retry mode. If ignition is not established after two (2) retries, no heat condition occurs.

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