Electrical Connection - Compu-aire SYSTEM 2100 Installation, Operation And Maintenance Manual

8) During this procedure, watch the gauge pressure to prevent the receiver from over-filling.
If the gauge pressure starts to rise, do not let the pressure exceed setting on
pressure relief device located on the receiver.
9) Open the rotolock valve of the system, release vapor pressure present and make
necessary repairs.
10) Evacuate the system. After evacuation is complete, the liquid can be transferred back
into the proper system, through the manifold gauge.

8.12 Electrical Connection

The unit is completely factory wired with self-contained controls.
IMPORTANT - Before proceeding with the electrical connections, make certain that the
volts, hertz and phase correspond to that specified on the unit rating plate. Also, check to be
sure that service provided by the utility is sufficient to handle the additional load imposed by
this equipment. Refer to the unit rating plate for equipment electrical requirements. The
attached wiring diagram shows the proper high and low voltage field wiring.
Make all electrical connections in accordance with National Electrical Code and any local
code ordinances that may apply. USE COPPER CONDUCTORS ONLY.
WARNING -- The unit cabinet must have an uninterrupted or unbroken electrical ground to
minimize personal injury if an electrical fault should occur. It is important that an electrical
ground wire of adequate size can be connected to the ground lug provided inside the control
box.
Supply voltage at the unit must be within + 10% of the voltage indicated on the nameplate
for a dual voltage rating, supply voltage must be within 5% from the lower nameplate rating
and within 10% from the higher rating. Phase to phase imbalance must not exceed 3%.
Contact your local utility company for correction of improper line voltage. Improper
electrical power supply may cause premature failures and void unit warranties.
The system cutout terminals on the terminal strip are for connection to a "panic button" or
remote shut-off if required. This should only be connected to a switch and NO EXTERNAL
SOURCE OF POWER SHOULD BE INTRODUCED AT THIS POINT. The conductors should be
sized depending on the length of run and the number of control transformers used in the
unit. Maximum voltage drop must not exceed 1 volt. Each control transformer draws
Rev. 01
05/27/2016
Page 24 of 42
Compu-Aire