Welbilt MERRYCHEF conneX Service & Repair Manual page 92

6 Replacing components
Requirements
Check that the following requirements have been met:
The appliance has been disconnected from the power supply and protective measures have been taken to ensure

the power cannot be switched on again.
The appliance is cool.

The casing of the appliance is removed.

The high voltage capacitors are discharged before commencing work.

Removing a transformer (high voltage)
1. Unplug all the electrical connections on the transformer(s).
2. Disconnect the transformer(s) from the magnetron(s) by unplugging the orange filament cables at the
magnetron(s).
3. Unfasten the four M5 flange nuts to remove a transformer.
4. On the X12 high power variants, the rear HV transformer should be removed first to gain access for removal of the
front HV transformer.
Fitting a transformer (high voltage)
Follow the steps in the reverse order to fit the high voltage transformer(s).
The fixing nuts should be torqued down to 3.5Nm.

On the X12 high power variants, the HV transformer connections on the front HV transformer are on the left-hand

side. The connections of the rear HV transformer are on the right-hand side (looking from the front).
Ensure the wiring is fixed back in the original orientation with new cable ties.

NOTICE:
It is imperative that the electrical connections are replaced correctly. If the electric connections have not been restored
properly this may lead to malfunction/damage of the oven.
Wire
Rear HV Transformer
Number
50Hz
31 0V

35 200V

36 230V

44

49

50

Merrychef conneX ® service and repair manual
X12 wiring connections
Front HV Transformer*
60Hz 50Hz
0V
208V
240V
0V
200V
230V
RH HV Transformer
60Hz 50Hz
0V
200V
230V
0V
208V
240V
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X16 wiring connections
LH HV Transformer
60Hz 50Hz
0V
208V
240V
0V
200V
230V
60HZ
0V
208V
240V
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