American Dryer Corp ML-96HS Preoperational Tests, Heat Circuit Operational Test

7.Check ALL service doors to insure that they are closed and secure.

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

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

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

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

11.Check tumbler bearing set screws to insure they are ALL tight.

I. 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 and lint door are closed.

3.Refer to the operating instructions for starting your particular model dryer.

4.Check to ensure the basket (tumbler) starts in the clockwise (CW) direction. Additionally, check the direction of the blower motor impellor (fan) to ensure the impellor (fan) rotates in the clockwise (CW) position 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 above must turn in the clockwise (CW) direction, otherwise dryer efficiency will drastically be reduced and premature component failure can result.

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 Hot Surface 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.

NOTE: During the purging period, check to be sure ALL gas shut-off 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 assure that the water column (W.C.) pressure is correct and consistent.

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