Sears 721.69252990, Основное полевое руководство

Страница: 4 / 49

1. ADJUSTMENT PROCEDURES
To avoid possible exposure to microwave energy
leakage, adjust the door latches and interlock
switches, using the following procedure.
ONLY AUTHORIZED SERVICE PERSONNEL
SHOULD MAKE THIS ADJUSTMENT.
The Interlock Monitor and Primary Interlock Switch
acts as the final safety switch protecting the user from
microwave energy. The terminals between “COM” and
“NC” of the Interlock Monitor must close when the
door is opened. After adjusting the Interlock Monitor
Switch, make sure that it is correctly connected. See
Figures 1-a and 1-b throughout this procedure.
CHECK THE DOOR LATCH AND SWITCH
CLOSINGS.
NOTE: The outer cover of the microwave oven is
removed.
(1) Set the microwave oven on its side so that you can
see the latch board and the switches, as shown in
Figure 1-a.
(2) Close the door tightly and check gaps A and B to be
sure they are no more than 1/64
”
(0.5 mm). See
Figure 1-b for close-up view of gaps A and B (door
latches).
If all gaps are less than 1/64
”
(0.5 mm), adjustment of
the latch board may not be necessary. Go to Steps 5
and 6 to check the sequence of the switches.
NOTE: To correct sequence of the Primary Interlock
Switch, Secondary Interlock Switch and the
Interlock Monitor Switch is very important.
If any gap is larger than 1/64
”
(0.5 mm), you will need
to adjust the latch board-U, L. Go to step 3 and follow
all steps in order.
ADJUST THE LATCH AND SWITCH CLOSINGS
(3) Loosen the two screws holding the plastic latch board
as shown.
(4) With the oven door closed tightly, move the latch
board upward toward the top of the oven and/or away
from the door latch until the gaps are less than 1/64
”
(0.5 mm).
Hold the latch board tightly in this position until you
check the sequence of the switches in steps 5 and 6.
TEST THE LATCH AND SWITCH SEQUENCE
(5) Open the oven door slowly. Watch the door latch, the
Primary Switch. Release Rod and Lever on the
switches to make sure they are zero to the body of
the switches in the following sequence:
- Primary Interlock Switch
- Secondary Interlock Switch
- Interlock Monitor Switch
Adjust the latch board until the switches operate in
this sequence. See Steps 3 and 4.
(6) Close the oven door slowly and be sure it is tightly
closed. Watch the three switches to make sure they
are zero to the body of the switches in the following
sequence:
- Interlock Monitor Switch
- Primary Interlock Switch
- Secondary Interlock Switch
NOTE: The Interlock Monitor Switch is an added safety
check on the Primary and Secondary Interlock
Switches. If the Primary and Secondary Interlock
Switches allow the oven to operate with the door
open, the Monitor Switch will blow the fuse.
(7) When you achieve the proper sequence of switches
in Steps 5 and 6, tighten the latch board screws at
that point.
TEST THE MICROWAVE ENERGY LEAKAGE
(8) Using a survey meter, make sure the microwave
energy is below 5 mW/cm.sq.
-3-
MODEL 721.69252990
721.69259990