GE JS998 Series, Техническое обслуживание руководство

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Magnetron Cooling Fan and Thermal TCO
(
Wall Ovens)
Note: The magnetron is covered under an
additional 4 year warranty. The customer is
responsible for any labor or in-home service
during this time.
TCO
Magnetron Fan
Microwave Components
Left Cooling Fan (
Slide-In Range
)
The left cooling fan cools the HVT and magnetron
and is located in the left rear corner of the control
compartment. It has an approximate resistance
value of 13
Ω
.
The left cooling fan and the magnetron stirrer are
controlled with a single relay.
• The magnetron cooling fan motor has an
approximate resistance value of 68
Ω
.
• The magnetron TCO is located on top of the
magnetron housing and is wired in series with
L1 to the main power board.
• Check for proper magnetron cooling fan
operation (blockage, blades not turning).
• When the temperature on the magnetron TCO
reaches 320°F, the magnetron TCO opens
and removes power to the controls. When
cooled below 140°F, it closes and restores
power to the controls.
• The magnetron fan, HVT fan, and magnetron
stirrer are controlled by a single relay on the
single and double wall ovens.
WARNING: To prevent electrical shock, use
extreme caution when diagnosing oven with outer
covers removed and power on. The high voltage
circuit of the magnetron power area (HVT,
capacitor, diode, magnetron) is 4400V potential
with respect to ground. Wait at least 5 minutes
after disconnecting power before servicing the
magnetron power area.
Left Fan
PRECAUTIONS TO BE OBSERVED
BEFORE AND DURING SERVICING TO
AVOID POSSIBLE EXPOSURE TO
EXCESSIVE MICROWAVE ENERGY
A. Do not operate or allow the oven to be
operated with the door open.
B. If the oven operates with the door open,
instruct the user not to operate the oven and
contact the manufacturer immediately.
C. Make the following safety checks on all ovens
to be serviced before activating the magnetron
or other microwave source, and make repairs
as necessary:
D. Before turning on microwave power for any
test or inspecting within the microwave
generating compartments, check the
magnetron, wave guide or transmission line
and cavity for proper alignment, integrity and
connections.
E. Any defective or misadjusted components in
the interlock monitor, door seal and
microwave generation and transmission
systems shall be repaired, replaced or
adjusted by procedure described in this
manual before the oven is released to the
owner.
F. A microwave leakage check to verify
compliance with the federal performance
standard should be performed on each oven
prior to release to the owner.