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OM-4428 Page 49
9-8. Overload Protection (Deutz F4L2011-Powered Units)
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! Stop engine.
. When a supplementary protector,
circuit breaker or fuse opens, it usu-
ally indicates a more serious prob-
lem exists. Contact Factory Autho-
rized Service Agent.
1 Fuse F1
2 Fuse F2
F1 and F2 protect the stator exciter
winding from overload. If F1 opens,
weld and generator power is low or
stops entirely. If F2 opens, weld output
is low or stops entirely. 4 kVA/kW gener-
ator power is still available.
3 Circuit Breaker CB4 (Not Shown)
4 Supplementary Protector CB5
(CC/CV Models Only)
5 Supplementary Protector CB6
(CC/CV Models Only)
6 Circuit Breaker CB10 (Not Shown)
7 Supplementary Protector CB11
8 Supplementary Protector CB12
9 Supplementary Protector CB13
10 Circuit Breaker CB14 (Not Shown)
CB4 protects the welding arc drive (dig)
circuit. If CB4 opens, electrode may
stick to the workpiece more frequently
during low voltage (short arc length)
conditions. CB4 automatically resets
when the fault is corrected.
CB5 protects the 24 volt ac output to re-
mote receptacle RC14, and 24 volt out-
put to field current regulator board PC1
(CC/CV models only). If CB5 opens,
weld output and 24 volt output to RC14
stops. On units with optional three-
phase generator, generator power out-
put at receptacle RC5 also stops if CB5
opens.
CB6 protects the 115 volt ac output to
remote receptacle RC14 (CC/CV mod-
els only). If CB6 opens, 115 volt output
to RC14 stops.
CB10 protects the engine battery cir-
cuit. If CB10 opens, the engine will not
crank. CB10 automatically resets when
the fault is corrected.
CB11 protects the weld control circuit.
On CC models, if CB11 opens the max
OCV circuit does not work and open cir-
cuit voltage is variable at all times (see
max OCV note under Weld Controls in
Section 6-2). If CB11 opens on CV mod-
els, weld output stops (generator power
is still available).
CB12 protects the field flashing circuit.
If CB12 opens, the generator may not
excite at start-up and weld and genera-
tor power output may not be available.
CB13 protects the engine control cir-
cuit. If CB13 opens, the engine does not
crank.
CB14 protects throttle solenoid TS1 on
units with auto idle option. If CB14
opens, the engine does not run at idle
speed. CB14 automatically resets when
the fault is corrected.
Press button to reset supplementary
protector.
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