Service Manual for the Thermador Pro Harmony Range, Model PRL364GDH/01
58300000154022_ARA_EN_D
Page 33 of 68
Figure 53: Solenoid Valve with O Ring
6.3.6 XLO Valve Removal and Replacement
The XLO valves are for the left-most front and left-most rear burners
only. In order to replace the XLO valve, you must remove the
potentiometer together with the XLO valve.
1. Follow all safety precautions and steps in
, page
2. Follow all steps in
Accessing Components under the Maintop
3. Remove knob from valve stem by slowly pulling knob straight out,
away from control panel.
4. While using a 1/2 inch wrench to hold the nut on the solenoid
valve, unscrew the gas tube hex nut with a 9/16 inch wrench.
Then unscrew the other side of the gas tube attached to the jet
holder assembly and remove the gas tube. Be careful not to bend
the gas tube (see Figure 52).
5. Remove the burner support rail (with jet holder assemblies
attached) by following the steps in
6. First make a note of how the wires are connected to the solenoid
valve terminals, and then remove the wires from the terminals.
NOTE:
It is always recommended to label and tag all wires and
harnesses prior to disconnecting them, so as to correctly identify
their connections/locations when reassembling.
HINT:
Alternatively, you can photograph the wire connections
prior to disconnecting (for example, with your mobile phone).
7. Using an adjustable wrench, unscrew the large hex nut on the
solenoid and remove the solenoid valve from the XLO valve. Be
careful not to lose the plastic O ring positioned inside the large
hex nut of the solenoid valve, as it may fall out easily
(see Figure 53).
8. Using a 1/4 inch socket wrench/ratchet, remove and retain the
self-tapping screw located under the manifold that secures the
XLO valve onto the manifold (see Figure 49). Be careful not to
lose the rubber washer attached to the screw.
-OR-
Using a 1/4 inch nut driver, remove and retain the self-tapping
screw by accessing it from under the chassis base, through the
corresponding access hole (the oven door must be opened or
removed) - see Figure 49. Be careful not to lose the rubber
washer attached to the screw.
9. Gently lift the protruding part of the XLO valve out of the
receptacle on the manifold (don’t lose the red rubber washer
attached to the XLO valve), and slightly bring out the (connected)
XLO valve/potentiometer assembly from under the front panel. Be
aware of the side connector that is attached (see Figure 54,
page 34).