Section 6: Adjustments; Plant Exerciser Pe Timer; Timer Programming; Provisions For Extended Pe Memory - Eaton Cutler-Hammer RTHMFDA20100WSU Instructions Manual

I.B. ATS-RM05
Page 16

SECTION 6: ADJUSTMENTS

6.1 PLANT EXERCISER PE TIMER

Option 23, described in Section 3.2, is a plant exerciser.
The plant exerciser is a once every 7-day timer switch
used to exercise the engine driven generator.

6.1.1 TIMER PROGRAMMING

Depress the PE Switch located on the end of the printed
circuit board for 2 seconds and release. Both Normal
and Emergency LEDs will flash twice indicating the plant
exerciser is now programmed correctly. The transfer
switch will initiate a test now and every seven days from
this time forward. If for some reason both power sources
are unavailable for longer than 20 seconds, the plant
exerciser will have to be reprogrammed when either
power source becomes available. To cancel the plant
exerciser, depress the PE Switch for 4 seconds and
release. Both Normal and Emergency LEDs will flash 4
times to indicate the plant exerciser is now disabled.
After the current exercise is complete the Transfer
Switch will transfer back to Normal. The plant exerciser
will now have to be reprogrammed in order to exercise
the generator.

6.1.2 PROVISIONS FOR EXTENDED PE MEMORY

Provisions for a 9 volt battery are included in all residen-
tial transfer switches to enhance the Plant Exerciser
memory duration. The 9 volt battery is not included. The
customer is not required to use this feature; the standard
20 second memory backup is integral to all residential
transfer switches. This provision provides backup power
to the microprocessor memory enabling it to retain the
Plant Exerciser set point for a maximum of 30 days with-
out any power on the transfer switch. The 30 day limit
may vary depending on the type and amount of charge
in the battery. It is recommended that the battery be
replaced yearly or after an accumulated number of out-
age hours equal to 30 days for maximum performance.
A typical condition that may use battery power would be
during a utility outage with a failure of the generator to
start. Please note, that even with the 9 volt battery provi-
sions, the built in 20 seconds Plant Option is still func-
tional on the board.
Effective 6/01