Lincoln Electric INVERTEC POWER WAVE 450 IM524-D - Manual (Page 36)

SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Only Qualified personnel should
perform this maintenance.
• Turn the input power OFF at the
disconnect switch or fuse box
before working on this equipment.
• Do not touch electrically hot parts.
ROUTINE AND PERIODIC
MAINTENANCE
Perform the following preventive maintenance at least
once every six months.
Prior to performing preventive maintenance it is impor-
tant to perform the following capacitor discharge pro-
cedure to avoid electric shock.
INPUT FILTER CAPACITOR DIS-
CHARGE PROCEDURE
1. Turn off input power and disconnect input power
lines.
2. Remove the hex head screws from the top and the
sides of the machine. Remove the handle bar and
the wrap-around machine cover.
3. Remove the two case sides. There are hex head
screws on each side.
TO PREVENT DAMAGE TO MACHINE, AVOID
UNNECESSARY MOVEMENT OF FRONT PANEL.
4. Obtain a high resistance and high wattage resistor
(25-1000 ohms and 25 watts minimum). This
resistor is not supplied with the machine. Secure
this resistor to a piece of insulating material such
as a glastic board. See Figure D.3. NEVER USE A
SHORTING STRAP FOR THIS PROCEDURE.
MAINTENANCE
D-1 D-1
POWER WAVE 450
WARNING
WARNING
CAUTION