American Dryer Corp MDG30V installation manual Preoperational Tests, GAS Models only

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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.Refer to the Operating Instructions for starting your particular model dryer.

3.GAS MODELS ONLY

a.When a gas dryer is first started (during initial start-up), it has a tendency not to ignite on the first ignition attempt. This is because the gas supply piping is filled with air, so it may take a few minutes for the air to be purged from the lines.

NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.

NOTE: Gas model dryers are equipped with an ignition system, which has internal diagnostics. If ignition is not established after one (1) time, the heat circuit in the ignition module will attempt two (2) more ignitions (total of three [3] ignition attempts). If there is no flame after the third ignition attempt the module will lockout until it is manually reset. To reset the ignition system, open and close the main door and restart the dryer.

b.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.

NOTE: Water column pressure requirements (measured at the pressure tap of the gas valve body):

Natural Gas ---------------------- 3.5 Inches (8.7 mb) Water Column.

Liquid Propane (L.P.) Gas ----- 10.5 Inches (26.1 mb) Water Column.

IMPORTANT: There is no regulator provided in an L.P. dryer. The water column pressure must be regulated at the source (L.P. tank), or an external regulator must be added to each dryer.

4.Make a complete operational check of ALL safety related circuits:

a.Door Switch(es)

b.Hi-Limit Thermostats

c.Cycling Thermostat

d.Sail Switch

NOTE: The sail switch can be checked for proper operation by opening the lint drawer. While pushing the lint drawer switch in, start a drying cycle. The heating unit should not activate (wait 30-seconds). If heat does activate, make the necessary adjustments to the sail switch.

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Contents MDG30V Retain This Manual In a Safe Place For Future Reference Important Note to PurchaserFor Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information Receiving and HandlingSafety Precautions Explosion could ResultPage Specifications SpecificationsMDG30V Installation Procedures UNPACKING/SETTING UPLocation Requirements Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Single Dryer Venting Vertical Venting Multiple Dryer Common Venting Illus. C Important Venting Reminders Electrical Information Electrical RequirementsSingle-Phase 1ø Wiring Connections/Hookup Must be ProvidedSINGLE-PHASE 1Ø Electrical Connection Leads Important a Circuit Servicing Each Dryer Must be Provided Service Wire Approx Circuit Phase AMP Draw Voltage Breaker MDG30V GASGAS Information Type of GAS Page Page Preparation for OPERATION/START-UP Preoperational Tests GAS Models onlyPreoperational Instructions Coin ModelsPage OPL Models Shut Down Instructions Parts SERVICE/PARTS InformationService Warranty Warranty InformationReturning Warranty Cards Suggested Cleaning Schedule Routine MaintenanceCleaning Adjustments LubricationLint Drawer Removal Troubleshooting StandardsBlower motor is not operating does not start Microprocessor controller computer display reads dSFL GAS Models only Dryer operates but is taking too long to dry Excessive noise and/or vibration Data Label Information Data LabelSerial Number Procedure for Functional Check Replacement Components Page 113365 1 04/22/02-25
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