American Dryer Corp MDG-50 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.

3.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 shut-off valves are open.

NOTE: Dryers are equipped with a Direct Spark Ignition (DSI) system which has internal diagnostics. If ignition is not established after one (1) time, the heat circuit in the DSI module will lock out until it is manually reset. To reset the DSI (Direct Spark Ignition) system, open and close the main door and restart the dryer.

a.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 (W.C.) pressure requirements (measured at the pressure tap of the gas valve body):

Natural Gas -----------------

3.5 Inches Water Column (W.C.)

Liquid Propane (L.P.) Gas ---

10.5 Inches Water Column (W.C.)

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 Switches

b.Hi-Limit thermostats

c.Cycling thermostat

d.Sail Switch

NOTE: The sail switch can be checked for proper operation by opening the lint door while heating circuit (gas burner) is active (on). The heating unit should shut off within a few seconds. If not, make necessary adjustments to the sail switch.

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Contents MDG-50 Installation Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section Routine Maintenance Section Important InformationSafety Precautions Personal Injury or Fire could ResultPage Specifications SpecificationsSpecifications Installation Procedures Unpacking and Setting UPLocation Requirements Dryer Enclosure Requirements Fresh AIR Supply Exhaust Requirements Single Dryer Venting Illus. B Multiple Dryer Common Venting ILLUS. D Importantventingreminders Electrical Information Electrical RequirementsMust be Provided Odfn Klwh Uhhq Important a Circuit Serving Each Dryer Must be Provided DG-50 GAS GAS Information Injury and Improper Operation of the DryerType of GAS Page Page Preparation for Operation and START-UP Preoperational Tests Preoperational Instructions Page OPL Models Shut Down Instructions Service PartsReturning Warranty Cards SectionRoutine Maintenance CleaningAdjustments LubricationDrive motor not operating does not start TroubleshootingNo L.E.D. light emitting diode display Blower motor not operating does not start Microprocessor computer display reads dSFL Microprocessor controller computer display reads doorNo heat, ignitor sparks, burner goes on and off right away Dryer operates but is taking too long to dry Condensation on main door glass Dryer or scraping noise at basket tumbler areaDrive motor only not operating Excessive noise or vibrationMain burners are burning with a yellow flame Dryer operates but is taking too long to dry load Heating unit not operating ALL temperature selectionsBlower motor only not operating Dryer is cycling on hi-limit thermostat Technical Information Data LabelSerial Number Reversing Timer SPIN/DWELL Adjustments Timing LegendProcedure for Functional Check Replacement Components Direct Spark Ignition DSI System 10/30/00-150
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