Miele T 980x, Technical Information

Page: 33 / 67

Technical Information
33
T 980x/T 982x
4 Service
Note:
When working on a gas dryer (T 982x), the drum door must be closed .
If the front panel is off, the opening to the drum needs to be blocked off.
4.1 Checking the Gas Burner
Danger!
Danger of burning.
Gas will ignite at igniter electrode E1/1 once the electrode has received
voltage and begun to glow.
Note:
There is a measuring port for jet pressure at the gas valve, but no
measuring port for the gas-tapping pressure.
1. Test the gas resting pressure (target value: 4 ounces per square inch
(17.4 millibars)).
Note:
Gas resting pressure is the pressure of gas that is stationary, without
tapping the gas.
2. Check the gas-tapping pressure (target value: 1.9 ounces per square inch
(8.2 millibars)).
Note:
Gas-tapping pressure is the gas flow pressure at the connection of the
dryer, with the burner running.
This pressure can only be measured while operating, with a functional
burner.
3. Check the temperature limiters (1F1, 2F1) for continuity.
Warning!
If the front temperature limiter (2F1) has tripped, assume that the burner
and its connecting cables have sustained thermal damage by a flashback.
In this case, replace the burner and its connecting cables.
At the same time, check the general area of the burner for heat damage.
Warning!
If the rear temperature limiter (1F1) has tripped, check the exhaust air
duct and the fan for heat damage.