Manitowoc Merrychef eikon e2s, Service And Repair Manual

Page: 115 / 193

10 Tests
eikon e2s Service and Repair Manual UL 115
4. Connect the DMM to one terminal and the metal outer case of the
high voltage capacitor.
The test is passed if the DMM display reads "open circuit".
Repeat the test for the other terminal and the metal outer case.
5.
Using a megger, test the insulation resistance between both
terminals and the metal outer case of the high voltage capacitor.
The test is passed if the megger display reads over 100 M
Ω.
6. Repeat the whole test for the second high voltage capacitor
(2000W variant only).
High Voltage Magnetron test
Ensure the following requirements have been met before starting the test:

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 high voltage capacitors are discharged before commencing work.

Anti-static precautions have been taken.

The casing of the appliance has been removed.
1. Remove all electric connections from the magnetron.
2. Using a megger, check for continuity.
Results should be as follows:
3. Connect the megger to both filament terminals of the magnetron.
The test is passed if the megger display reads 1
Ω or less.
4. Connect the megger to one filament terminal and the metal outer
case of the magnetron.
The test is passed if the megger display reads "open circuit".
Repeat the test for the other filament terminal and the metal outer
case.
5.
Repeat the whole test for the second magnetron (2000W variant
only).