Kohler KGP, Руководство пользователя

Страница: 23 / 126

TP-6461 1/08 23 Section 2 Controller Troubleshooting
Section 2 Controller Troubleshooting
This section contains troubleshooting information for
the transfer switch controls. When troubleshooting a
power system problem, also refer to Section 3, Transfer
Switch Troubleshooting, and to the troubleshooting
information in the generator set service documentation.
2.1 Initial Checks
When troubleshooting a problem with the transfer
switch operation , check the following things first.
D
Check the Service Required LED and the transfer
switch controller display for fault or warning
indications. If a fault or warning is indicated, proceed
to Section 2.8.
D
Check the system settings and time delays. See
Section 2.4, System Settings. Many transfer
problems can be traced to inappropriate controller
settings.
D
Check the event history log. The log lists the 100
most recent transfer switch events, including
transfers and DIP switch setting changes as well as
faults and alarms. See Section 2.3 for instructions to
view the event history log.
D
If the transfer switch display is off, check for power to
the transfer switch. If the utility source is not
available, check for emergency power. Follow the
voltage check procedure in Section 3.3.2, Voltage,
Frequency, and Phase Rotation Checks, to check
voltage at the Source N (normal) or Source E
(emergency) lugs.
D
If the utility source is available but the transfer switch
display is off, check for open source circuit breakers
or switches. Disconnect power and verify that the
transfer switch wiring harness is connected to the
controller. See Section 3.3.
D
Disconnect all power to the transfer switch and check
for loose connections. Check the source lugs,
controller harnesses, and generator set engine start
connection.
Read and follow all safety precautions in this manual
and on labels on the switch. Only trained and qualified
personnel should service the transfer switch and
connected equipment.
Refer to the wiring diagrams provided with the switch or
the Wiring Diagram Manual when troubleshooting the
transfer switch and controller.
Hazardous voltage.
Will cause severe injury or death.
Disconnect all power sources before
opening the enclosure.
DANGER
Hazardous voltage.
Will cause severe injury or death.
Only authorized personnel should
open the enclosure.
DANGER
Servicing the transfer switch. Hazardous voltage can
cause severe injury or death.
Deenergize all power sources
before servicing. Turn off the main circuit breakers of all
transfer switch power sources and disable all generator sets
as follows:
(1) Move all generator set master controller
switches to the OFF position. (2) Disconnect power to all
battery chargers. (3) Disconnect all battery cables, negative
(--) leads first.
Reconnect negative (--) leads last when
reconnecting the battery cables after servicing. Follow these
precautions to prevent the starting of generator sets by an
automatic transfer switch, remote start/stop switch, or engine
start command from a remote computer. Before servicing any
components inside the enclosure: (1) Remove all jewelry. (2)
Stand on a dry, approved electrically insulated mat. (3) Test
circuits with a voltmeter to verify that they are deenergized.
Testing live electrical circuits. Hazardous voltage or
current can cause severe injury or death. Have trained and
qualified personnel take diagnostic measurements of live
circuits. Use adequately rated test equipment with electrically
insulated probes and follow the instructions of the test
equipment manufacturer when performing voltage tests.
Observe the following precautions when performing voltage
tests: (1) Remove all jewelry. (2) Stand on a dry, approved
electrically insulated mat. (3) Do not touch the enclosure or
components inside the enclosure. (4) Be prepared for the
system to operate automatically.
(600 volts and under)
2.2 Controller Backup Battery
The transfer switch controller uses a backup battery for
power when no source is available. A Low Backup
Battery message on the screen indicates that this