American Dryer Corp MDG75V 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 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 “LOCKOUT” 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 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.GAS MODELS ONLY - Sail Switch

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Contents MDG75V Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Procedure for Functional Check of Replacement Important Information Receiving and HandlingSafety Precautions What to do if YOU Smell GASPage Specifications SpecificationsMDG75V Component Identification Page Installation Procedures Location RequirementsUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements General Exhaust Ductwork InformationPage Page Multiple common Dryer Venting Importantventingreminders Electrical Information Electrical RequirementsMust be Provided SINGLE-PHASE 1Ø Electrical Connections Leads Important a Circuit Servicing Each Dryer Must be Provided Page MDG75V GAS GAS Information Type of GAS Page Page Preparation for OPERATION/START-UP Preoperational Tests GAS Models onlyBasket Tumbler Coating Preoperational Instructions Shutdown InstructionsService SERVICE/PARTS InformationParts Cleaning Routine MaintenanceSuggested Cleaning Schedule Adjustments LubricationLint Drawer Removal Troubleshooting Microprocessor Controller Computer ModelsBlower 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 Dryer is making scraping noise at basket tumbler area Data Label Information Data LabelSerial Number Procedure for Functional Check Replacement Components SectionviiiPage 113160 1 11/27/02-25
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