American Dryer Corp MDG-30 installation manual Preoperational Tests

Page 31

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 shutoff valves are open.

NOTE: Dryers are equipped with a Direct Spark Ignition (DSI) system, which has internal diagnostics. If ignition is not established after the first attempt, 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.

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 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 Switches

b.Hi-Limit Thermostats

c.Cycling Thermostat

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

5. Make a complete operational check of ALL operating controls.

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Contents MDG-30 Coin Installation Manual Retain This Manual In a Safe Place For Future Reference Foryour Safety Page Table of Contents Section Procedure for Functional Check of Replacement Receiving and Handling Important InformationWhat to do if YOU Smell GAS Safety PrecautionsPage Specifications SpecificationsSpecifications GAS only Unpacking and Setting UP Installation ProceduresLocation Requirements Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Single Dryer Venting Vertical Venting Multiple Dryer Common Venting Illus. D Importantventingreminders Electrical Requirements Electrical InformationMust be Provided Single-Phase 1ø Electrical Connections Leads 120 GASGAS Information Rating Kcal/hr22,680 This Pipe Size Requirement Page Preparation for Operation and START-UP Preoperational Tests Basket Tumbler Coating Preoperational InstructionsPage Select Temperature Shutdown Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty InformationWarranty Cleaning Routine MaintenanceSuggested Cleaning Schedule Lubrication AdjustmentsNo light emitting diode L.E.D. display TroubleshootingDrive motor is not operating does not start Microprocessor controller computer display reads dSFL Blower motor is not operating does not startNo heat, ignitor sparks, burner goes on and off right away Microprocessor controller computer display reads doorDryer operates but is taking too long to dry Dryer is making scraping noise at basket tumbler area Condensation on main door glassExcessive noise or vibration Main burners are burning with a yellow flame Heating unit is not operating all temperature selectionsDryer operates but is taking too long to dry load Dryer is cycling on hi-limit thermostat Data Label Datalabel InformationSerial Number Procedure for Functional Check Replacement Components Page Page Burner Manual Reset HI-LIMIT Instructions 12/15/99-150
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