Engine/Generator Overload Protection - Miller Big Blue 800 DUO PRO Owner's Manual

8-8. Engine/Generator Overload Protection

1
!
Stop engine.
.
When a supplementary protector, cir-
cuit breaker or fuse opens, it usually in-
dicates a more serious problem exists.
Contact Factory Authorized Service
Agent.
1 Supplementary Protector CB9
CB9 protects the 24 volt AC output to re-
mote receptacle. If CB9 opens, weld output
and 24 volt output to remote receptacle
stops.
2 Fuse F1
3 Fuse F2
F1 and F2 protect the stator exciter winding
from overload. If F1 opens, weld and gen-
erator power is low or stops entirely. If F2
.
Complete Parts List available at www.MillerWelds.com
opens, weld output is low or stops entirely.
4 kVA/kW generator power is still available.
4 Supplementary Protector CB3
5 Supplementary Protector CB4
CB3 protects the weld control circuit. If
CB3 opens, weld output stops, meters will
be blank; however, generator power is still
available.
CB4 protects the field flashing circuit. If
CB4 opens, the generator may not excite at
start-up and weld and generator power out-
put may not be available.
6 Supplementary Protector CB2
CB2 protects the engine control circuit. If
CB2 opens, the engine does not crank.
7 Supplementary Protector CB11
7
6
9
3
2
5
4
8 Supplementary Protector CB12
CB12 protects the fuel pump circuit. If
CB12 opens, the fuel pump does not work
and the unit will stop.
9 VRD Switch
See Section 6-6 for VRD switch informa-
tion.
10 Circuit Breaker CB10 (Not Shown)
CB10 protects the engine battery circuit. If
CB10 opens, the engine will not crank.
CB10 automatically resets when the fault is
corrected.
11 Circuit Breaker CB13 (Not Shown)
CB13 protects the glow plug circuit. If
CB13 opens, the glow plug will not operate.
CB13 automatically resets when the fault is
corrected.
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907 587−2 / 803 229
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