
Service Manual for the Thermador Pro Grand Next Generation 48-Inch Natural Gas and LP Gas Ranges, Models:
PRG486JDG/01, PRL486JDG/01
58300000159722_ARA_EN_D
Page 40 of 92
6.7.6
Potentiometer Removal and Replacement
The potentiometer (also known as the
simmer control
potentiometer
) is used for simmer (XLO) and also XHi functionality. It
is accessible from under the maintop and also requires control panel
removal. It should not be confused with the
oven function
/
temperature
selector switch
, which is also a type of potentiometer.
Be sure to check QuickFinder for relevant information, documentation,
and the correct part number when replacing this component.
1. Follow all safety precautions and steps in
2. Follow all steps in
Accessing Components under the Maintop
3. Remove the control panel (see
page
4. Detach the white side connector from the potentiometer by
pressing on the tab, and pulling it off.
5. Rotate the valve shaft until you can slide the potentiometer off of
the valve shaft (see Figure 50).
6. Replace the potentiometer if needed.
Figure 50: Potentiometer
1
XLO valve shaft
2
Side connector on potentiometer
Gas Leaks
With electrical power off, carefully check for gas leaks at each gas
component that was removed, replaced, or otherwise serviced using a
gas leak detector (electronic leak detectors are highly recommended)
or bubble test. If potentiometer servicing involved removing an XLO
valve, you may need the electrical power to be on when testing for
gas leaks.
Use extreme caution
when performing gas leak testing on
XLO valves with the electrical power on.
6.7.7
Manifold for Rangetop Burners – Removal and
Replacement
The manifold for rangetop burners is sold as an assembly, which
comes with all the valves pre-installed. Valves can be installed
independently, without replacing the manifold assembly.
Be sure to check QuickFinder for relevant information, documentation,
and the correct part number when replacing this component.
Figure 51: Typical Manifold for Rangetop Burners
1. Follow all safety precautions and steps in
page
2. Follow all steps in