
OM-189 530 Page 24
SECTION 6 – MAINTENANCE & TROUBLESHOOTING
6-1.
Routine Maintenance
Y
Disconnect power before maintaining.
3 Months
Replace
unreadable
labels.
Clean and
tighten
weld
terminals.
Repair or
replace
cracked
weld
cable.
Check
14-pin
cord.
Check gas
hose and
fittings.
Check
gun
cable.
Replace
cracked
parts.
6 Months
Blow out or vacuum
inside. During heavy
service, clean
monthly.
OR
Clean
drive
rolls.
6-2.
Replacing Fuses
Y
Turn Off welding power
source and weld control.
See Parts List for size and rating of
fuses.
1
Fuse F1
Fuse F1 protects the wirefeed motor
and motor drive board from over-
load. If Fuse F1 opens, the wirefeed
motor stops. Check for jammed wire,
binding drive gear, or misaligned
drive rolls. Correct problem and re-
place F1.
2
Fuse F2
Fuse F2 protects the VL-M4 internal
control circuits and the 115 vac sup-
plied to pin A of 17-pin receptacle
from overload. If F2 opens, all opera-
tion stops. Correct problem and re-
place F2.
3
Fuse F3
Fuse F3 protects the volt sense cir-
cuit from overload. If F3 opens, volt-
age feedback will be lost when using
a constant current power source with
the VL-M4 in the CC mode. Correct
problem and replace F3.
Ref. 802 531
1
3
2
Push And Turn
Pull Out And
Push And Turn
Replace Fuse
Содержание VL-M4
Страница 24: ...OM 189 530 Page 20 A For Non CE Units Use With Section C Ref 802 531 187 706 D 1 5 2 3 4 Á Á Á 6 7 ...
Страница 25: ...OM 189 530 Page 21 B For CE Units Use With Section C ref 802 531 196 228 1 5 2 3 4 6 7 ...
Страница 30: ...OM 189 530 Page 26 SECTION 7 ELECTRICAL DIAGRAM SC 197 809 A Figure 6 1 Circuit Diagram ...