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.
a.Open ALL shutoff valves.
2.Refer to the Operating Instructions for starting your particular model dryer.
a.When the dryer is first started (during initial
1)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.
a)If the dryer is equipped with a Direct Spark Ignition (DSI) system, the DSI control module has internal diagnostics. If ignition is not established within three (3) attempts, the heat circuit in the DSI control module will “LOCKOUT” until manually reset. To reset the DSI system, open and close the main door and restart the dryer.
b)If the dryer is equipped with a Hot Surface Ignition (HSI) system, the HSI control module has internal diagnostics. If ignition is not established after the first attempt, the heat circuit in the HSI control module will “LOCKOUT” until manually reset. To reset the HSI system, open and close the main door and restart the dryer.
NOTE: During the purging period, check to be sure that ALL gas shutoff valves are open.
NOTE: Water column pressure requirements (measured at the pressure tap of the gas valve body)...
Natural Gas
Liquid Propane (L.P.) Gas
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.
3.Make a complete operational check of ALL safety related circuits:
a.Door switch(es)
b.
c.Sail switch
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