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INVERTEC V300-I
D-1
MAINTENANCE
4. SHORTING STRAP FOR THIS PROCE-
DURE.
5. Locate the two capacitor terminals (large
hex head cap screws) shown in Figure
D.1.
6. Use electrically insulated gloves and
insulated pliers. Hold body of the resistor
and connect resistor leads across the
two capacitor terminals. Hold resistor in
place for 10 seconds. DO NOT TOUCH
CAPACITOR TERMINALS WITH YOUR
BARE HANDS.
7. Repeat discharge procedure for capaci-
tor on other side of machine. If you are
working on a 575 VAC machine, repeat
discharge procedure for second capaci-
tor on each side of machine.
8. Check voltage across terminals of all
capacitors with a DC voltmeter. Polarity
of capacitor terminals is marked on PC
board above terminals. Voltage should
be zero. If any voltage remains, repeat
this capacitor discharge procedure.
INPUT FILTER CAPACITOR
DISCHARGE PROCEDURE
1. Turn off input power or disconnect input
power lines.
2. Remove 14 5/16” hex head screws from
side and top of machine (6 screws on
each side and 2 screws on top) and
remove wrap-around machine cover.
3. Be careful not to make contact with the
capacitor terminals that are located in
the center of the Switch Boards.
4. Obtain a high resistance and high
wattage resistor (25-1000 ohms and 25
watts minimum). This resistor is not sup-
plied with machine. NEVER USE A
FIGURE D.1 — LOCATION OF INPUT FILTER CAPACITOR TERMINALS.
Failure to follow this
capacitor discharge proce-
dure can result in electric
shock.
WARNING
