8 TT-1403 4/16
4 Service Kits GM48913 and
GM48919
Use the service kit GM48913 (120VAC) or
GM48919 (240VAC) to replace failed exercise timers on
transfer switches equipped with S340 controls. The
service kits include the exercise timer GM64027, timer
enclosure GM64054, and a DIN rail for timer mounting.
See Figure 12 and Figure 13.
GM64027
Figure 12 Timer with Enclosure
GM64087
1. To power source:
120 VAC (GM64027 timer)
240 VAC (GM64028 timer
2. Engine start connection
1 2
Figure 13 Wiring Diagram for Service Kits GM48913
and GM48919
5 Setup
After connecting the wiring leads, the controllers must
be set for loaded or unloaded exercise. Follow the
specific instructions below for either the RDT or KSS-J
model transfer switches.
Note: Changing the type of exercise (loaded or
unloaded) that is run by the exercise timer does
not affect the type of exercise that is set by the
transfer switch controller.
5.1 Setup for RDT Models
On RDT model transfer switches, the exercise timer
must be set manually to run either loaded or unloaded
exercises. Set DIP switch #2 on the Accessory Board to
select loaded or unloaded exercise runs. See Figure 14.
See Figure 8 for the location of the DIP switches on the
accessory board.
D Set DIP switch #2 to the OFF position to run the
generator set without transferring the load, or
D Set DIP switch #2 to the ON position to start the
generator set and transfer the load during exercise
runs. For peak shave applications, set the DIP switch
to the ON position.
DIP Switch
OFF
(open)
ON
(closed)
2 Loaded Exercise Unloaded Loaded
Figure 14 Accessory Board DIP Switch Setting
GM64027
1. Accessory
Board
2. DIP
Switches
1
2
Figure 15 Detail, Dip Switch Location
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