American Dryer Corp. AD30 2R Series, Руководство по обслуживанию

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450370 - 2 www.adclaundry.com 11
TO REPLACE SPARK IGNITOR
1. Discontinue power to the dryer.
2. Disconnect high voltage connector from DSI module.
3. Disassemble ignitor from burner by removing the self-
tapping screw.
4. Reverse procedure for installing the new ignitor probe.
NOTE: Before reestablishing power to the dryer, visually
check the following: (refer to the illustration).
5. There should be a 1/8” gap (+/- 1/32) between the ignitor
probe and the burner tube.
6. Do not wrap the red high voltage wire and flame-probe
wire together. (Improper operation may result.) They may
run along side each other.
7. Check to see that spark occurs on the open end of the
burner tube and not the closed side. If this happens, adjust
ignitor farther from the side of the tube.
TO REPLACE GAS VALVE
1. Discontinue power to the dryer.
2. Close shutoff valve in the gas supply line.
3. Disconnect the gas valve wiring.
4. Break union connection before gas valve.
5. Loosen and remove two (2) screws securing pipe bracket
to the burner.
6. Remove gas valve/manifold assembly from the dryer.
7. Remove manifold from outlet of the gas valve.
8. Remove piping from valve.
9. Reverse procedure for installing the new gas valve.
AD30x2R
!
WARNING
Test all connections for leaks by brushing on a soapy
water solution (liquid detergent works well).
NEVER TEST FOR LEAKS WITH A FLAME!!!
TO REPLACE MAIN BURNER ORIFICE
1. Refer to “TO REPLACE GAS VALVE” and follow Step #1
through #6.
2. Unscrew main burner orifice and replace.
NOTE: Use extreme care when removing and replacing
orifices. THESE ORIFICES ARE MADE OF BRASS,
WHICH IS EASILY DAMAGED.
3. Reverse the removal procedure for reinstalling.
!
WARNING
Test all connections for leaks by brushing on a soapy
water solution (liquid detergent works well).
NEVER TEST FOR LEAKS WITH A FLAME!!!
TO TEST AND ADJUST GAS
(WATER COLUMN) PRESSURE
There are two (2) types of devices commonly used to measure
water column pressure. They are spring/mechanical type
gauges and manometers. The spring/mechanical type gauge
is not recommended because it is easily damaged and not
always accurate. A manometer is simply a glass or transparent
plastic tube with a scale in inches, which when filled with water
and pressure is applied, the water in the tube rises, showing
the exact water column pressure.
NOTE: Manometers are available from the factory by
ordering Part No. 122804.
1. To test gas water column pressure.
Connect water column test gauge connection to gas valve
pressure tap (1/8” N.P.T). This pressure tap is located on
the outlet (downstream) side of the valve.
Start the dryer. With burner on, the correct water column
reading in inches would be:
Natural Gas ___ 3.5 in WC (8.7 mb)
L.P. Gas ______ 10.5 in WC (26.1 mb)
2. To adjust water column pressure for natural gas models,
remove vent cap. Turn the slotted adjustment screw
located on top of the valve next to the terminals. Turn
clockwise to increase manifold pressure and
counterclockwise to decrease. For L.P. gas models there
is no regulator on valve.
NOTE: If correct water column pressure cannot be
achieved, problem may be due to an undersized gas supply
line, a faulty or underrated gas meter, etc.