8-9. Overload Protection

3

! Stop engine.

. When a supplementary protec- tor, circuit breaker or fuse opens, it usually indicates a more serious problem exists. Contact Factory Authorized Service Agent.

 

1

Fuse F1

 

F1

protects the stator exciter wind-

 

ing from overload. If F1 opens, weld

 

and generator power is low or stops

 

entirely.

 

2 Circuit Breaker CB1 (Not

 

 

Shown)

 

3

Supplementary Protector CB2

 

4

Supplementary Protector CB3

 

5

Supplementary Protector CB8

 

CB1 protects the engine battery cir-

 

cuit. If CB1 opens, the engine will not

 

crank. CB1 automatically resets

 

when the fault is corrected.

 

CB2 protects the engine wiring har-

 

ness. If CB2 opens, the engine will

 

not crank.

 

CB3 protects part of the weld control

 

wiring harness. If CB3 opens, weld

 

and generator power output stops.

 

CB8 protects the 24 volt ac output to

 

remote receptacle RC14. If CB8

 

opens, 24 volt output to RC14 stops.

 

Press button to reset supplementary

1

protector.

4

5

Ref. 222 875-A / 803 566 / 804 068

OM-223 037 Page 39

Page 45
Image 45
Miller Electric Big Blue 400 PX manual Overload Protection