Liebert RAC2-8 • 37
Section 5: Installation Select a location for the RAC2-8 that is convenient for both operation
and cable routing. If the application at your installation is critical, the
location should also provide limited access to the controller.
The RAC2-8 enclosure is surface mounted using four 1/4 in. bolts. The
power cord is factory wired. Note that the use of a 220 VAC 50/60 Hz
power source must be selected when the unit is ordered. This is not a
field selectable option. Two EIA-232 ports are available at the bottom
of the enclosure. All other customer cables enter through knoc kouts at
the bottom of the enclosure.
Refer to Figure i on Page iv in the
beginning of this manual for a
typical system configuration. Refer to
the following drawings (including
notes) for details of wire
terminations and switch settings for
inputs and outputs used at your
installation. The RAC2-8 includes a lithium backup battery for control memory. The
battery is disconnected from the system for storage and shipment. Set
DIP switch 2-8 to ON to connect the battery.
Call Liebert Environmental Support
at 1-800-543-2778 if you require any
assistance for the installation or
operation of your RAC2-8
Autochangeover controller.
The RAC2-8 may show an alarm from a Liebert DataMate, mini-
MATE, and/or mini-MATE Plus unit when an alarm condition does
not, in fact, exist. If you are using or plan to use the RAC2-8 with the
Liebert DataMate, mini-MATE, and/or mini-MATE Plus, remove the
C5 capacitor at the K5 common alarm relay to avoid false alarms:
Installation (cont’d.)
1. Put on an anti-static wrist strap.
2. Turn the main disconnect switch OFF.