Lincoln Electric V160-S Service Manual page 70

F-10
INPUT CAPACITOR DISCHARGE PROCEDURE ( ontinued)
ELECTRIC SHOCK
kill.
• Have an electrician install
and service this equipment.
• Turn the input power off at
the fuse box before working
on equipment.
• Do not touch electrically hot
parts.
• Prior to performing preventative maintenance, per-
form the following capacitor discharge procedure to
avoid electric shock.
DISCHARGE PROCEDURE
1. Remove the input power to the machine.
2. Using the phillips head screwdriver remove the
screws securing the case wraparound cover.
3. Be careful not to make contact with the capacitor
solder pads located on the input board. See Figure
F.2.
FIGURE F.2 – LOCATION OF INPUT FILTER CAPACITOR TERMINALS ON THE INPUT BOARD
TROUBLESHOOTING & REPAIR
can
V160-S & -T
4. Obtain a high resistance and high wattage resistor
(25-1000 ohms and
This resistor is not with the machine. NEVER USE
A SHORTING STRAP FOR THIS PROCEDURE.
5. Locate the eight capacitor solder pads shown in
Figure F.2.
6. Using electrically insulated gloves and pliers, hold
the body of the resistor with the pliers and connect
the resistor leads across the two capacitor solder
pads. Hold the resistor in place for 15 seconds.
DO NOT TOUCH CAPACITOR SOLDER PADS
WITH YOUR BARE HANDS.
7. Repeat the discharge procedure for the other
capacitor.
8. Check the voltage across the terminals of all capac-
itors with a DC voltmeter. Voltage should be zero.
If any voltage remains, repeat the capacitor dis-
charge procedure.
INSULATED
PLIERS
INSULATED
GLOVES
F-10
25 watts minimum).