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NOTE: Dryer can be stopped at any time by opening the main door or by pressing the “CLEAR/STOP”
key. To restart the dryer, press the “ENTER/START” key or a preprogrammed cycle key (i.e.,
“E”).
NOTE: Pressing keypad key “A,” “B,” “C,” “D,” or “F” will also start the dryer. The six preprogrammed
drying cycles (“A” thru “F”) have been stored in the microprocessor controller’s (computer’s)
memory. Refer to the Programming Manual supplied with the dryer for these preprogrammed
cycles.
10. Check to ensure that the tumbler starts in the clockwise direction. Additionally, check the direction of the blower
motor to ensure that it rotates in the counterclockwise direction as viewed from the left side of the dryer. If it
does, the phasing is correct. If the phasing is incorrect, reverse two (2) of the leads at L1, L2, or L3 of the power
supply connections made to the dryer.
IMPORTANT: Dryer blower motor and impellor/fan shaft as viewed from the left side of the dryer must
turn in the counterclockwise direction, otherwise the dryer efficiency will be drastically
reduced, and premature component failure can result.
11. Heat Circuit Operational Test
a. Gas Models
1) When the dryer is first started (during initial start-up), the burner has a tendency not to ignite on the first
attempt. This is because the gas supply piping is filled with air, so the dryer may have to be stopped and
restarted several times for this air to be purged from the lines.
2) The dryer has one (1) burner box, which has its own Direct Spark Ignition (DSI) module and Spark
Ignition/Flame-Probe Assembly. If ignition is not established after first attempt, the heat circuit DSI
module will lockout until it is manually reset. To reset the DSI system, open and close the loading doors
and restart the dryer (press “ENTER/START” key).
NOTE: During the purging period, verify that ALL gas shutoff valves are open.
3) Once ignition is established, a gas pressure test should be taken at the gas valve pressure tap of the dryer
to assure that the water column pressure is correct and consistent.
NOTE: Water column pressure requirements (measured at both gas valve pressure taps)...
Natural Gas ----------------- 3.5 inches (8.7 mb) water column.
Propane --------------------- 10.5 inches (26.1 mb) water column.
IMPORTANT: There is no regulator provided in a propane dryer. The water column pressure must be
regulated at the source (propane tank), or an external regulator must be added to each
dryer.
b. Steam Models
1) Check to ensure that the steam damper is functioning properly.
