6 American Dryer Corporation 450412-4
CAUTION: Improperly sized or installed
exhaust ductwork can create a potential fire
hazard.
Electrical and Gas Requirements
It is your responsibility to have all electrical connections
made by a properly licensed and competent electrician to
assure the electrical installation is adequate and conforms
with local and state regulations or codes. In the absence
of such codes, all electrical connections, material, and
workmanship must conform to the applicable requirements
of the National Electrical Code ANSI/NFPA No. 70-LATEST
EDITION, or in Canada, the Canadian Electrical Codes
Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION (for
Electrical Connections).
IMPORTANT: Failure to comply with these codes or
ordinances and the requirements stipulated in this
manual can result in personal injury or component
failure.
The dryer installation must meet the American National
Standard, National Fuel Gas Code ANSI Z223.1-LATEST
EDITION, or in Canada, the Canadian Electrical Codes
Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION (for
Electrical Connections) as well as, local codes and
ordinances, and must be done by a qualified technician.
NOTE: Undersized gas piping will result in ignition
problems and slow drying and can create a safety
hazard.
The dryer must be connected to the type of gas (natural or
L.P.) indicated on the dryer data label. If this information
does not agree with the type of gas available, contact the
reseller who sold the dryer or contact the factory.
The gas input ratings shown on the dryer data label are for
elevations up to 2,000 feet (610 meters), unless elevation
requirements of over 2,000 feet (610 meters) were
specified at the time the dryer order was placed with the
factory. The adjustment for dryers in the field for elevations
over 2,000 feet (610 meters) are made by changing the
burner orifices. If this adjustment is necessary, contact the
reseller who sold the dryer or contact the factory.
NOTE: Any burner changes must be made by a qualified
technician.
Operational Service Check Procedure
Turn on electric power to the dryer.
To start dryer:
Display will read “READY.”
Press “E” on the keypad of microprocessor controller
(computer).
The dryer will start to run.
NOTE: Pressing keypad selections “A,” “B,” “C,” “D,” or
“F” will also start the dryer. Six preprogrammed drying
cycles (A through F) have been stored in the computer’s
memory. (Refer to the computer operator’s manual for
details.)
!Make a complete operational check of all the operating
controls to assure that the timing is correct, temperature
selection switches are functioning, etc.
Make a complete operational check of all safety-halted
circuits: door switches, hi-limit thermostat, sail switch,
cycling thermostats, etc.
For gas dryers a gas pressure test should be taken at the
gas valve pressure tap of each dryer to assure that the
water column pressure is correct and consistent.
NOTE: Water column pressure requirements (measured
at the pressure tap on the gas valve body):
Natural Gas ______ 3.5 in wc (8.7 mb).
L.P. Gas__________ 10.5 in wc (26.1 mb).
If computer program changes are required, refer to the
operator’s manual, which was supplied with the dryer.
The dryer should be operated through one complete cycle
to assure that no further adjustments are necessary and
that all components are functioning properly.
Check the electric service phase sequence. While the dryer
is operating, check to see if the tumbler is rotating in the
proper direction. Looking from the front, the tumbler should
spin in the clockwise direction. If so, the phasing is correct.
If the phasing is incorrect, reverse 2 leads at connections
L1, L2, or L3 of power supply to the dryer.
Description of Parts _________________
Control Panel (Microprocessor)
Lifting the control door will reveal the control panel
assembly. Opening the control panel will allow access to
the major components, which include the microprocessor
computer board and the keypad.