MULTIQUIP DLW400ESA4 Operation Manuals page 50

7. Verify that the AC voltmeter (Figure 69) on the welder-
generator reads zero volts.
100
0
50
0
Figure 69. AC Voltmeter (Zero Volts)
8. To restore power, press the RESET button (Figure 70)
on the GFCI module and verify that the red FAULT LED
turns OFF and the green POWER LED should turn ON.
GREEN
POWER
LED
MANUAL RESET
Figure 70. GFCI Sensing Module
(Green LED ON Reset)
9. Verify that the AC voltmeter is registering a voltage
reading as indicated by Figure 71.
100
0
50
0
Figure 71. AC Voltmeter (120/240V)
NOTICE
It is recommended that the GFCI sensing module be
tested when the welder-generator is initially uncrated.
Then, the module should be tested daily at startup.
PAGE 50 — DLW400ESA4 WELDER/GENERATOR • OPERATION MANUAL — REV. #0 (03/14/18)
200
300
100
V 150
F
P
A
O
W U
E L
R T
PRESS
200
300
100
V
150
CAUTION
The GFCI module is designed to interrupt power when
a ground fault exists to prevent injuries and shock
hazards. DO NOT operate the welder-generator if this
test fails. Consult a qualified electrician for repair or
replacement of the GFCI module.
TESTING THE GFCI RECEPTACLE
If tripping of the GFCI receptacle persists after a load is
replaced with a known good one (no short circuit), perform
this test at least once a month.
1. Start the welder-generator as outlined in the start up
procedure in this manual.
2. Place the GFCI circuit breaker, CB4 (Figure 72) in the
ON position.
CB4
Figure 72. GFCI Circuit Breaker ON
3. Verify green LED on the GFCI receptacle (Figure 73)
is ON.
4. Plug a power tool into the GFCI receptacle such as a
electric drill. Squeeze the ON/OFF switch on the drill
and verify that the drill turns on.
GFCI
RECEPTACLE
GREEN LED ON
TEST
BUTTON
RESET
BUTTON
Figure 73. GFCI Receptacle Test
MAINTENANCE
ON
No.4
20A
120V
ELECTRIC
DRILL
ON/OFF
SWITCH