Checking The Excitation Circuit; Checking The Stator Power Winding - Briggs & Stratton 1938 Operator's Manual

Service
& Troubleshooting Guide ' Home Generator Systems __'ggs _ s_o_o.
Checking The
Access Requirements:
• Roof Removal
• Muffler Box Removal
• Fuel Line From Regulator Removal
Related Fault Indications:
• Low Voltage ([ • • • ]) Three Blinks
Gain access to the capacitors as mentioned above.
• Isolate The Capacitors
Excitation Circuit
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Page 46
Page 47
NOTE: Use the manufacturer's instructions that
apply to the type of meter you are using. The rated
capacity is printed on the capacitors.
• . If a value discrepency is found:
• Replace Capacitor
Check Excitation Winding (DPE) Resistance between wires
that were disconnected from capacitors and lead into the
stator, as shown in figure 41.
ou,d
•. If resistance reading is OK:
• Re-install/replace the capacitors
• Re-assemble the standby generator enclosure.
Checking The Stator Power Winding
Access Requirements:
• Roof Removal
• Muffler Box Removal
• Fuel Line From Regulator Removal
Related Fault Indications:
• Low Voltage ([ • • • ]) Three Blinks
Page 46
Page 46
Page 47
Gain access to the stator power winding leads as mentioned
above.
• Isolate the colored wires from the terminal block.
• Measure the resistance value of the stator power
winding as shown in figure 42.
• • If not:
• Check for short-to-ground.
• • If none: _- _Replace Stator 1
See "Removing The Meccalte-Generator" (Page 46).
I! 1091 109 Ohms+-5%
_,_.................................... _, ............................................................................................................. V should be measured.
•• If not:
• Check for short-to-ground.
"" If none: _ l Replace Stator
43