Overload Protection; Water Flow Switch (Optional For Water-Cooled Models) - Miller Electric XR Control Owner's Manual

7-11. Overload Protection

3

7-12. Water Flow Switch (Optional For Water-Cooled Models)

The water flow switch protects the gun from overheating. If coolant flow rate drops below 1 qt/min, the water flow
switch opens and stops the welding wire from feeding. See Section 7-13 for remedies to this trouble.
1
2
Y Turn Off wire feeder and
welding power source. Stop
engine on welding
generator.
If fuse opens, unit shuts down. To
replace fuse, proceed as follows:
1 Fuse Holder Cover
2 Fuse F1 (See Parts List)
3 Circuit Breaker CB1
If CB1 opens, the gun drive motor,
gas valve, and contactor will not
operate when trigger is pulled. The
gun drive motor operates in the Jog
mode with CB1 open.
Check for blocked gun liner.
Check for jammed wire, binding
drive gear or misaligned drive rolls
in feeder. Correct problem.
Allow cooling period and manually
reset breaker. Close and latch door.
Ref. 801 577 / Ref. 800 185-A
OM-1594 Page 39