Use and Care Manual

2008 Cummins Inc. All rights reserved.
3-3
GENERATOR EXERCISER
The generator set should be run at least once every
28 days to make sure it operates properly. The exer-
ciser will automatically start the generator set and
let it run for 20 minutes once every 28 days. The au-
tomatic exercise is set by pressing the Set Exercise
pushbutton.
Setting An Exercise Period
The operator has to be present at the transfer
switch to set the start time of the exercise. There are
two ways to start an exercise period. It can be set to
start immediately and repeat at this time every 28
days or it can be set to start 12 hours from now and
repeat at that time every 28 days.
There is a 12-hour offset feature so that the opera-
tor does not have to be present at an inconvenient
time. For example, you can set the exercise at 3:00
PM so that it will start at 3:00 AM.
Step 2 below shows how to set the 12-hour offset
and step 3 below shows how to set an immediate
exercise period.
1. Verify that the Exercise LED is off.
2. To set and exercise period that will start 12
hours from now and repeat every 28 days
from that time, press and hold the Set Exercise
pushbutton for 5 seconds. The Exercise LED
flashes at a rate of twice per second for 5 sec-
onds and then stays on when the exercise peri-
od is set. A delayed 20 minute exercise period
will start in 12 hours. The Exercise LED flashes
at a rate of once per second during the exercise
period. When the exercise period is over, the
Exercise LED quits flashing and remains on to
signify that repeat exercise periods are en-
abled.
3. To start an immediate exercise period and
have it repeat, press and hold the Set Exercise
pushbutton for 5 seconds. The Exercise LED
flashes at a rate of twice per second for 5 sec-
onds and then stays on. Momentarily press the
Set Exercise pushbutton a second time within
ten seconds and an exercise period will start
immediately. Momentarily pressing and releas-
ing the Set Exercise pushbutton a second time
starts an immediate 20 minute exercise period
instead of waiting for 12 hours. The Exercise
LED flashes at a rate of once per second during
the exercise period. When the exercise period
is over, the Exercise LED stops flashing and re-
mains on to signify that repeat exercise periods
are enabled.
4. Record the exercise start time for future refer-
ence.
Canceling Repeat Exercise Periods
With the control panel Exercise LED on steady,
press and hold the Set Exercise pushbutton for 5
seconds. The Exercise LED flashes at a rate of
twice per second for 5 seconds and then goes out to
signify that repeat exercise periods are cancelled.
Canceling An Active Exercise Period
Active exercise periods can be canceled by press-
ing the Override pushbutton on the control panel.
Power Source Failure During An Active
Exercise Period
If either power source fails during an active exercise
period, the control immediately terminates the exer-
cise and proceeds with the automatic mode of op-
eration.