MULTIQUIP DLW400ESA4 Operation Manuals page 49

V-BELT
Visually examine the V-belt (Figure 64) and determine if it
is full of tiny cracks, frayed, has pieces of rubber missing,
is peeling or otherwise damaged.
Also, examine the belt and determine if it is oil soaked or
"glazed" (hard shiny appearance on the sides of the belt).
Either of these two conditions can cause the belt to run hot,
which can weaken it and increase the danger of it breaking.
If the V-belt exhibits any of the above wear conditions
replace the V-belt immediately.
GLAZED
CRACKS
SIDEWALL
WEAR
Figure 64. V-Belt Inspection
TESTING THE GFCI SENSING MODULE
If tripping of the main circuit breaker persists after a load is
replaced with a known good one (no short circuit), perform
this test with no load.
1. Start the welder-generator as outlined in the start up
procedure in this manual.
2. Place the main circuit breaker, CB1 (Figure 65) in the
ON position.
e
F
CB1
PS
JET
E
40 A
AC220V 25kA
Figure 65. Main Circuit Breaker ON (GFCI Test)
DLW400ESA4 WELDER/GENERATOR • OPERATION MANUAL — REV. # 0 (03/14/18) — PAGE 49
OIL SOAKED
CORD FAILURE
WORN BACK
COVER
BROKEN
MISSING RUBBER
ON
3. On the GFCI sensing module (Figure 66), verify that
the green POWER LED is ON.
GREEN
POWER
LED
Figure 66. GFCI Sensing Module (Green LED ON)
4. Also verify that the AC voltmeter is registering a voltage
reading as indicated by Figure 71.
5. Next, press the TEST button on the GFCI module
(Figure 67) and verify that the green POWER LED
turns OFF and the red FAULT LED turns ON.
Figure 67. GFCI Sensing
Module (Red/Fault LED ON)
6. Also verify that the main circuit breaker (Figure 68)
switch trips to the OFF position.
e
F
CB1
PS
JET
E
40 A
AC220V 25kA
Figure 68. Circuit Breaker OFF (GFCI Test)
MAINTENANCE
F
P
A
O
U
W
L
E
R T
MANUAL RESET
PRESS
F
P
O A
U
W
E L
T
R
RED
FAULT
LED
MANUAL RESET
OFF