Manual 0-2728
5-3
REPLACEMENT PROCEDURES
E. Front Panel Replacement
1. Remove the Left and Right Side Panels per Sec-
tion 5.04-A.
2. Remove the Work Cable per Section 5.04-D.
3. Remove the Torch & Leads per Section 5.04-E.
4. Remove the two bolts at the bottom of the Front
Panel.
5. Remove the nuts on the inside of unit securing
the Front Panel to the two studs on the center chas-
sis.
6. Carefully remove Front Panel from the unit.
7. Install the replacement Front Panel by reversing
the above procedure.
5.05 Access Panel Parts
Replacement
NOTE
Refer to Section 6.04 for parts list and overall de-
tail drawing.
A. CURRENT Knob Replacement
1. Turn the CURRENT adjustment fully counter
clockwise and note the location of the pointer at
the 30 on the knob.
2. Loosen the screw securing the Current Knob to
the potentiometer shaft.
3. Remove knob.
4. Place the replacement Current Knob on to the po-
tentiometer shaft with the location of the pointer
the same as noted in step 1.
5. Tighten the screw to secure the knob to the poten-
tiometer shaft.
B. ON/OFF Switch (SW1) Replacement
1. Unlatch the Access Panel to gain access to the rear
of the ON/OFF Switch.
2. Disconnect all the wiring to the ON/OFF Switch.
Wiring is as follows:
On/Off Switch
wire #32
wire #33
wire #34
wire #35
4B
5B
1A
2A
A-02285
3. Squeeze the top and bottom of the switch while
pulling it out of the Access Panel.
4. Install the replacement ON/OFF Switch by revers-
ing the above procedure.
C. RUN/SET Switch (SW2) Replacement
1. Unlatch the Access Panel to gain access to the rear
of the RUN/SET Switch.
2. Disconnect all the wiring to the RUN/SET Switch.
Wiring is as follows:
Run/Set Switch
wire #30
wire #31
A-02284
3. Squeeze the top and bottom of the switch while
pulling it out of the Access Panel.
4. Install the replacement RUN/SET Switch by re-
versing the above procedure.
D. STANDARD/LATCH Switch (SW3)
Replacement (See NOTE)
NOTE
STANDARD/LATCH Switch was not available on
earlier units.
1. Unlatch the Access Panel to gain access to the rear
of the STANDARD/LATCH Switch.
2. Disconnect all the wiring to the STANDARD/
LATCH Switch. Wiring is as follows:
STANDARD/LATCH Switch
Wire To J28-3
Wire To J28-1
A-03057
3. Squeeze the top and bottom of the switch while
pulling it out of the Access Panel.
4. Install the replacement STANDARD/LATCH
Switch by reversing the above procedure.
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