Kohler KGP, Manual

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TP-6461 1/08 37 Section 3 Transfer Switch Troubleshooting
Section 3 Transfer Switch Troubleshooting
3.1 Initial Checks
When troubleshooting the transfer switch mechanism,
always check for simple causes first: broken or loose
wires, corroded contacts, exposure to dirt or foreign
material, etc.
Check the time delays, source settings, and other
system parameters as described in Sections 2 and 4
before concluding that there is a mechanical problem
with the transfer switch. Many transfer problems can be
traced to inappropriate controller settings.
Verify that the voltage on the nameplate matches the
actual nominal source voltage. Use the procedure in
Section 3.3.2 to measure the source voltage. Observe
safety precautions when taking voltage measurements.
Verify that the measured voltage matches the transfer
switch rated voltage.
3.2 Transfer Switch
Troubleshooting Table
The following table lists potential problems with possible
causes and suggested remedies. Section numbers in
the last column refer to other sections of this manual.
TOC refers to the Table of Contents in this manual; see
the table of contents for service procedures for your
transfer switch.
Also see the controller troubleshooting table in Section
2.9.
Always follow the safety precautions at the beginning of
this manual when troubleshooting and servicing the
transfer switch.
Problem Possible Cause Check
See
Section
Generator set engine does not
start Engine start time delay is running Check for active time delays on the
controller display. Press End Delay
button to end the delay, if necessary. 2.5
Use View Time Delay screen to check
time delay settings. ATS O/I/M
Loose engine start connection Check connections. Tighten
connections and/or replace wiring if
necessary. ATS O/I/M
No engine start signal from the
ATS Test the engine start contact operation. 4.7
Generator set master switch not in
the AUTO position Move generator set master switch to
the AUTO position. Generator
manuals
Generator set problem Troubleshoot the generator set.
O/I/M= Operation and Installation Manual; O/M = Operation Manual; TOC = Table of Contents, this manual;
W/D = Wiring Diagrams