Maytag MDG25PN Service Manual page 83

Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
How to use a manometer:
1. Disconnect power supply to dryer.
2. Remove front panel.
3. Shut off gas to dryer.
4. If not already present, install a 1/4" tapered
fitting at the gas valve pressure tap. Use
thread seal tape or compound on fitting.
1/4" Tapered
Fitting
Barbed
Pressure Tap
5. Fill the manometer tube with water until
each side equalizes at "0" water column.
6. Using a narrow #1 or pocket type flat blade
screwdriver, turn the slotted adjustment
screw, inside the 1/4" tapered fitting,
counter-clockwise about 1 full turn. Push
the end of the manometer hose onto the
pressure tap.
7. Connect hose to one end of the manometer.
Electrical Shock Hazard
1/4" Tapered
Fitting
Smooth
Pressure Tap
5-3
8. Turn on the gas and reconnect dryer to
power. Run the dryer in a heat cycle. Read
the manometer with the flame on.
9. When the gas is on, the amount of water
column present is equal to the total amount
of deflection shown in the manometer.
Once the test is completed, make sure the
tapered fitting valve is closed by turning the
slotted adjustment screw clockwise until
tight.
Pressure
Tap
Check for gas leaks with a soap or bubble
solution. DO NOT USE OPEN FLAME TO
CHECK FOR GAS LEAKS.
IF HIGH WATER COLUMN PRESSURE IS
DETECTED: The gas flame can damage
the flame spreader on the burner. (This can
be caused by the wrong orifice, improper air
mixture or high gas pressure. If pressure
is higher than expected, contact local gas
utilities company to check outside regulator.