Lincoln-electric INVERTEC POWER WAVE IM542-D User Manual download pdf (Page 50)

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

E-1 E-1

POWER WAVE 450

WARNING

CAUTION

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Lincoln-electric INVERTEC POWER WAVE IM542-D User Manual Page 50