American Dryer Corp MDG75MNV, MDG75PNH installation manual Preoperational Tests

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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.

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 dryers are equipped with a Direct Spark Ignition (DSI) system, which has internal diagnostics. If ignition is not established within three (3) times, the heat circuit in the DSI module will “LOCK OUT” until it is manually reset. To reset the DSI 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 ensure 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.

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

a.Door Switch(es)

b.Hi-Limit Thermostats

c.Cycling Thermostat

d.Sail Switch

113394 - 8

Maytag Co.

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Contents MDG75PNH and MDG75MNV Installation Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check Section Safety PrecautionsMaytag Co 113394 Specifications SpecificationsSpecifications Gas Component Identification Maytag Co 113394 Location Requirements Installation ProceduresUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Requirements General Exhaust Ductwork Information Exhaust RequirementsOutside Ductwork Protection Maytag Co Multiple Common Dryer Venting Importantventingreminders Electrical Requirements Electrical InformationNON-REVERSING GAS Single-Phase Electrical Lead Connections For 110V Applications GAS Information Type of GAS Maytag Co 113394 Maytag Co Preparation for OPERATION/START-UP Preoperational Tests Basket Tumbler Coating Preoperational Instructions Dual Timer DryersShutdown Instructions Reversing Timer SPIN/DWELL AdjustmentsService SERVICE/PARTS InformationParts Cleaning Routine MaintenanceSuggested Cleaning Schedule Lubrication AdjustmentsLint Drawer Removal Data Label Information Sectionvii Procedure for Functional Check Replacement ComponentsMaytag Co Phase Manual Reset Burner HI-LIMIT InstructionsDual Timer Sensoractivated Fire Extinguishing S.A.F.E. System F.E. System In ActionInstallation Typical Water Supply F.E. System Theory of Operation F.E. System Water Valve Check F.E. System Diagnostics Messages Maytag Co 10/30/08
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