WHIRLPOOL ELECTRICAL APPLIANCES CO. LTD.
SERVICE MANUAL
Ref : 56258291a
PAGE 4 OF 17
2.
SAFETY PRECAUTIONS
This manual is intended for use by personnel with adequate background in
electrical, electronic and mechanical engineering. Any improper attempt to repair
this oven may result in personal injury and property damage. The manufacturer or
seller cannot be hold responsible for the interpretation of this manual nor can they
assume any liability in connection with its use.
PRECAUTIONS
TO
BE
OBSERVED
BEFORE
AND
DURING
SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY.
1.
Do not operate or allow the oven to be operated when the door is opened.
2.
Perform the following safety checks on the oven to be serviced before
activating the magnetron or other microwave sources and make repairs when
necessary:
Interlock operation
Proper closing of door
Door bending
Seal and sealing surfaces (arcing, wear or other damages)
Damage to or loosening of hinges or latches
Evidence of dropping or abuse
Door window is intact
3.
Before turning on the microwave power for any service test or inspection
within the microwave generating compartments, check the magnetron,
waveguide or transmission line, and cavity for proper alignment, integrity, and
connections.
4.
Any defective or misadjusted components in the interlock, monitor switch,
door seal, and microwave generation and transmission system shall be
repaired, replaced, or adjusted by procedures described in this manual before
the oven is released to the owner.
5.
A microwave leakage check to verify compliance with the appropriate
standard should be performed on each oven prior to release to the owner.
TO PREVENT ELECTRICAL SHOCK, PAY EXTREME CAUTION
WHEN DIAGNOSING OVEN WITH OUTER CASE REMOVED AND
POWER TURNED “ON”. THE HIGH VOLTAGE SECTION OF THE
POWER SUPPLY, INCLUDING FILAMENT LEADS, ARE AT A HIGH
TENSION OF -4000 VOLTS. ALSO, ENSURE THAT THE HIGH
VOLTAGE CAPACITOR IS DISCHARGED.
