Caution: This document contains mixed page sizes ... - Igor Chudov
Caution: This document contains mixed page sizes ... - Igor Chudov
Caution: This document contains mixed page sizes ... - Igor Chudov
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FLOW CHART B. UNSTABLE VOLTAGE, ENGINE SPEED STABLE 1800 RPM<br />
START<br />
Are there any broken wires or loose connections<br />
on voltage regulator assembly?<br />
Check wiring harness from regulator assembly<br />
to end bell per TEST [MI. Check OK?<br />
yes<br />
J-<br />
~~ ~~~<br />
Does adjustment of Dampening Control R26 on VR21<br />
per adjustment [PI result in stable<br />
voltage?<br />
Replace voltage regulator PC board per<br />
procedure [F].<br />
Is engine running at correct RPM?<br />
Are reference transformer (~21) tap connections<br />
correct and secure on TB22? See TEST IO].<br />
--Yes -<br />
Repair<br />
i<br />
as required.<br />
Repair wiring or replace as required.<br />
Is voltage stable within spec at no<br />
--Yes- . load to full load range of generator<br />
set?<br />
- no---,<br />
w<br />
Do not replace the printed circuit board<br />
untll the trouble not on the PC board has<br />
been located and corrected to avold damage to new PC board.<br />
FLOW CHART C. OUTPUT VOLTAGE TOO HIGH OR LOW<br />
START<br />
Does adjustment of Voltage Adjust control<br />
R21 on VR21 result in correct output<br />
Set RPM per instructions in appropriate<br />
engine manual.<br />
Set control pervoltage Calibration<br />
Adjustment [PI.<br />
I I I 1<br />
t<br />
Does adjustment of control R18 on VR21 result<br />
Set per Voltage Calibration Adjustment [PI.<br />
in correct output voltage?<br />
I I<br />
I I I I<br />
Do not replace the prlnted clrcult board<br />
until the trouble not on the PC board has<br />
been located and corrected to avold damage to new PC board.<br />
I<br />
’<br />
23<br />
Are generator output leads properly connected?<br />
See Figure 36, <strong>page</strong> 34.<br />
f Replace voltage regulator PC board VR21 per<br />
procedure [F].<br />
I<br />
_I