ADC AD-75V Installation Manual

ADC AD-75V Installation Manual Manual pdf 39 page image

35J. PREOPERATIONAL TESTSALL dryers are thoroughly tested and inspected before leaving the factory. However, a preoperational testshould be performed before the dryer is publicly used. It is possible that adjustments have changed in transit ordue 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 ONLYa. When a gas dryer is first started (during initial start-up), it has a tendency not to ignite on the first ignitionattempt. This is because the gas supply piping is filled with air, so it may take a few minutes for the airto 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 internaldiagnostics. If ignition is not established within three (3) times, the heat circuit in the DSImodule will “LOCKOUT” until it is manually reset. To reset the DSI system, open and closethe 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 thewater 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 Water Column (8.7 mb).Liquid Propane (L.P.) Gas --- 10.5 Inches Water Column (26.1 mb).IMPORTANT: There is no regulator provided in an L.P. dryer. The water column pressure must beregulated at the source (L.P. tank), or an external regulator must be added to eachdryer.4. Make a complete operational check of ALL safety related circuits:a. Door Switch(es)b. Hi-Limit Thermostatsc. Cycling Thermostatd. GAS AND ELECTRIC MODELS ONLY - Sail Switch