Kohler KBS - Isolating the Transfer Switch, 150-600 Amp Models

TP-6835 9/17 55Section 7 Bypass, Isolation, and Manual Transfer
7.2.2 Iso lating the Transfer Switch,
150--600 Amp Mo dels
Isolate the transfer switch before performing any service
work on the automatic transfer switch (ATS). Refer to
Figure 7-15 through Figure 7-18.
1. Bypass the closed automatic transfer switch
contacts. See Section 7.2.1, Bypassing ATS.
2. Turn the Isolation Handle counterclockwise
(approx. 8 turns) until window shows TEST.See
Figure 7-15 and Figure 7-16. The TS Test amber
light should come on (Figure 7-16). The ATS can
be tested now without load interruption.
Note: In the TEST position the transfer switch solenoid
operator circuit is energized through secondary
disconnects.
Position
window:
CONN
TEST
ISOLATE
Counterclockwise draws
out the transfer switch
Figure 7-15 Isolation Handle Turned to TEST
Turn crank
counter-
clockwise
until window
shows TEST.
E
L
N
Automatic Transfer Switch
Bypass Switch
TS CONNECTED
Middle amber light
should be on.
TS TEST
TS ISOLATED
Figure 7-16 CONNECTED to TEST position