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Heat Source Check
Electric Dryers
Close the loading door and start the dryer in a heat
setting (refer to the Operating Instructions supplied
with the dryer). After the dryer has operated for three
minutes, the exhaust air or exhaust pipe should be
warm.
Gas Dryers
To view the burner flame, remove the lower front
panel of the dryer.
Close the loading door, start the dryer in a heat setting
(refer to the Operating Instructions supplied with the
dryer); the dryer will start, the igniter will glow red
and the main burner will ignite.
IMPORTANT: If all air is not purged out of gas
line, gas igniter may go off before gas is ignited. If
this happens, after approximately two minutes
igniter will again attempt gas ignition.
After the dryer has operated for approximately five
minutes, observe burner flame through lower front
panel. Adjust the air shutter to obtain a soft, uniform
blue flame. (A lazy, yellow-tipped flame indicates lack
of air. A harsh, roaring, very blue flame indicates too
much air.) Adjust the air shutter as follows:
a. Loosen the air shutter lockscrew.
b. Turn the air shutter to the left to get a
luminous yellow-tipped flame, then turn it
back slowly to the right to obtain a steady, soft
blue flame.
c. After the air shutter is adjusted for proper
flame, tighten the air shutter lockscrew
securely.
d. Reinstall the lower front panel.
After the dryer has operated for approximately three
minutes, exhaust air or exhaust pipe should be warm.
Figure 23
For personal safety, lower front panel of
dryer must be in place during normal
operation.
W288
WARNING
D700I
1 Shut-Off Valve Handle 5 Open Position
Closed Position
2 Air Shutter Lockscrew 6
3 Air Shutter
4 1/8" (3.1 mm) Pipe Plug
(For checking manifold pressure)
2
3
4
1
6
5