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The dryer is equipped with a Hot Surface Ignition (HSI) system which has internal diagnostics. If
ignition is not established after the first attempt, the heat circuit HSI module will try two (2) additional times
and if a flame is not established the HSI module will lock out until it is manually reset. To reset the HSI
system, open and close the main door and restart the dryer (press desired temperature selection).
NOTE: During the purging period, check to be sure that ALL gas shut-off valves are open.
Once ignition is established, a gas pressure reading 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 gas valve pressure tap from the manifold
side of the gas valve):
Natural Gas---------3.5 Inches W.C.
L.P. Gas-------------10.5 Inches W.C.
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 regular must
be added to each dryer.
4. Make a complete operational check of ALL safety-related circuits (i.e., lint basket switches and
sail switches).
NOTE: The sail switch can be checked for proper operation by opening the main door, and while
holding the main door switch in, start the dryer. The heating units should not come on. If it
does, make the necessary adjustments.
5. Each basket (tumbler) SHOULD BE operated through one (1) complete cycle to assure that no
further adjustments are necessary and that ALL components are functioning properly.
IMPORTANT: The dryer baskets (tumblers) are treated with a protective coating. This coating can be
removed by tumbling old clothes or material in the baskets (tumblers) using a mild
detergent to remove the protective coating.
NOTE: Drying and cooling cycles are complete when the LED display reads “donE”.
6. Computer Programs/Selections
Each Microprocessor controller (computer) has been preprogrammed by the factory with the most
commonly used program (parameter) selections. If (computer) program changes are required, refer to the
Microprocessor Controller (Computer) Programming Manual which was shipped with the dryer.