TT-1403 4/16c
INSTALLATION INSTRUCTIONS
Original Issue Date: 12/04
Model: RDT, HDT, and KSS-J Automatic Transfer Switches
Market: ATS
Subject: Programmable Exerciser Kits GM47597-KA1, -KA2, KA3, -KP1, -KP2,
and -KP3; GM48913; GM48919, and GM64108
(GM38798-KA1, -KA2, KP1, KP2, discontinued*)
Introduction
Use the Programmable Exerciser Kit with the following
transfer switch models:
D RDT
D HDT
D KSS-J with Decision-Makerr MPAC 750 Controller
Service kits are also available to replace the exercise
timer on transfer switches equipped with S340 controls.
Figure 1 shows the programmable exerciser timer. See
Figure 3 through Figure 5 for illustrations of installed
exerciser timers.
Use the programmable exerciser kit to schedule
generator set exercise runs in addition to the weekly or
biweekly exercise set through the ATS controls. The
programmable exerciser kit can also be used for peak
shaving by scheduling the system to start the generator
set and transfer the load at selected times and days.
Optional Accessory Board GM38796-KA1 or -KP1 is
required for connection and operation of the
programmable exerciser kit on Model RDT transfer
switches.
The programmable exerciser kits include
programmable timer GM64027 or GM64028, mounting
hardware, and connecting leads as required.
Read the entire installation procedure and compare the
kit parts with the parts list at the end of this publication
before beginning installation. Perform the steps in the
order shown. The installation and wiring must comply
with the National Electrical Code and applicable local
codes.
* Discontinued kits. See page 13 for instructions.
Timer Features
D 24 hour/7 day timing combined
D 8 on/off operations daily, up to 56 switching (on or off)
cycles per week
D 5 year lithium battery for backup power
D 24 hour display (military time or AM/PM)
D Manual override
D Skip a day feature
Programmable Timer Specifications
Switching SPDT
Switch rating 16 A @ 45C; 10 A @ 55C
Supply voltage 120VAC, 50/60 Hz (GM60427)
240VAC, 50/60 Hz (GM64028)
5-year lithium backup battery
Rated power 3.5 VA
Operating
temperature range
-- 1 0 Cto55C
(--14F to 131F)
Connections 6.3 x 0.8 tab terminals
Shortest switch time 1 minute
Figure 1 Programmable Exerciser GM64027 (120V)
and GM64028 (240V)
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