American Dryer Corp ML-55HS installation manual Preoperational Tests

Page 39

J. 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.

a.Open ALL shutoff valves (gas and steam models only).

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

3.Gas Dryers

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 Hot Surface Ignition (HSI) system which has internal diagnostics. If ignition is not established within three (3) times, the heat circuit in the HSI module will lockout until it is manually reset. To reset the HSI 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.Steam Dryers

a. Check to insure that steam damper is functioning properly...

1)The steam damper should not "slam" (open or closed) when it reaches the end of (piston) travel. Additionally, the steam damper should not bind and/or stop during travel. If either of these conditions exist refer to air adjustment instructions in Section H.

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Contents ML-55HS 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 SectionWhat to do if YOU Smell GAS Safety PrecautionsStandards Specifications SPECIFICATIONS/COMPONENT IdentificationSpecifications Component Identification Electric Service Relay Box Location Requirements Installation ProceduresUNPACKING/SETTING UP Dryer Enclosure Requirements Fresh AIR Requirements Create a Potential Fire Hazard Exhaust RequirementsPage Page Page Electrical Information MLG-55 Gas MLS-55 Steam Page Black White Green Positive Neutral Ground Page Page Page GAS Information Type of GAS Page Steam Information Operating Steam Pressure Page Bars Steam System Operation Page Preparation for OPERATION/START-UP Preoperational Tests Basket Coating Preoperational Instructions Shut Down Instructions SERVICE/PARTS Information ServiceParts Returning Warranty Parts Warranty InformationReturning Warranty Cards WarrantyPage Cleaning Routine MaintenanceLubrication AdjustmentsProcedure for Functional Check Replacement Components Page Page Timing Legend Reversing Timer SPIN/DWELL AdjustmentsData Label Data Label InformationSerial Number P O R TA N T Manual Reset HI-LIMIT InstructionsP O RTA N T ADC 113000 9-11/23/05-0
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