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TROUBLESHOOTING & REPAIR
F-40 F-40
MULTI-WELD 350
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DIGITAL
METER
OUTPUT
CONTROL
POTENTIOMETER
BEZEL
LENS
KNOB
SPACER
SEAL
HOT START
ARC FORCE
OTE
4 4
2
2
0
6 6
10
5
4
3
2
6
10
9
8
7
CC
SLOPE
PIPE
STICK 7018
GOUGE
L11141-2
CC
CV
OFF
AMPS
VOLTS
A
V
MULTI-WELD 350
LINCOLN
ELECTRIC
ELECTR
ODE
INPUT
WORK
CHOPPER
TECHNOLOGY
FIGURE F.9 – DIGITAL METER AND POTENTIOMETER DETAILS
AMPS/VOLTS DIGITAL METER AND POTENTIOMETER
REMOVAL AND REPLACEMENT (CONTINUED)
DIGITAL METER REMOVAL
PROCEDURE
Refer to Figure F.9.
1. Set the CC/CV power switch to OFF.
2. Remove input power to the machine.
ELECTRIC SHOCK can kill.
Disconnect input power before removing the
case cover and performing tests or making
repairs to the machine.
3. Perform the Case Cover Assembly
Removal procedure.
4. Perform the Power Capacitor Discharge
procedure.
5. Perform the Case Front Assembly
Removal procedure.
6. Using the 5/16" nut driver, remove the
seven screws from the control box rear
panel.
WARNING