TP-6461 1/08 89Section 6 Component Replacement, Model KSS
16. Move the generator set master switch to the AUTO
position.
17. Test the transfer switch operation by performing
the Automatic Operation Test described in
Section 4.5.4.
Note: Do not leave the transfer switch in the Test
mode.
6.2.2 400--600 Amp
Microswitch Replacement Procedure
Hazardous voltage.
Will cause severe injury or death.
Disconnect all power sources before
opening the enclosure.
DANGER
1. Prevent all connected generator sets from starting.
a. Place the generator set master switch in the
OFF position.
b. Disconnect the power to the battery charger, if
equipped.
c. Disconnect the generator set engine starting
battery(ies), negative (--) lead first.
Note: On systems with multiple transfer
switches connected to a single
generator set, disconnect all power
sources to the generator set before
proceeding.
2. Disconnect power to the transfer switch.
3. Open the transfer switch enclosure.
4. Verify zero volts across each phase.
Note: A3/A4 microswitches can still be energized
with customer power. The microswitches
may be used for primary alarm circuits or
primary controlling devices. Verify that all
power is disconnected before proceeding.
5. Note the location of the fast-on connectors to the
microswitch terminals. See Figure 6-3.
6. Disconnect the fast-on connectors. See
Figure 6-4.
7. Remove the microswitch holding screws. See
Figure 6-5.
#
Figure 6-3 Microswitches
Figure 6-4 Microswitch Fast-On Connectors
#
Figure 6-5 Microswitch Holding Screws
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