PMAC Air Compressor
Powerex
•
100 Mundy Memorial Drive
•
Mt. Juliet, TN 37122
•
USA
P 1.888.769.7979
•
F 513.367.3125
•
www.powerexinc.com
IN598601AV
•
01/2020
Page 3 of 12
All electrical hook-ups must be performed by
a qualified electrician. Installations must be in
accordance with local and national electric codes.
Wiring
Use solderless terminals to connect the electric power source
provided. Various electrical connections may be provided in
accordance with customer requirements. Always ensure the
connections are proper and that when installing the final connection
that proper rotation of the compressor is witnessed.
Piping
Connect compressed air pipeline to the outlet of the check valve.
Do not modify check valve or replace with any other type. The scroll
compressor does not require a discharge pressure release valve for
shut down unloading. When the electric motor is de-energized, the
compressed air in the outlet pipe and after cooler will self relieve by
driving the pump in reverse a few turns. This is normal operation.
Do not modify or restrict the air flow to or from the after cooler
without review by Powerex Engineering. Improper cooling could lead
to damage of the scroll pump.
Direct Coupled Models
The Powerex Scroll Compressor assembly is designed to
accommodate a variety of mounting options by utilizing the main
baseplate. Standard mounting uses rubber stud isolation mounts.
Special models may vary.
Operation
Before Start-Up
1.
Make sure all safety warnings, labels and instructions have
been read and understood before continuing.
2.
Remove any shipping materials, brackets, etc.
3. Confirm that the electric power source and ground have been
firmly connected and are the correct voltage for the motor.
4. Be sure all pressure connections are tight.
5.
Check to be certain all safety relief valves, check valves, etc. are
correctly installed.
6.
Check that all fuses, circuit breakers, overloads, etc. are the
proper size.
7. Make sure the inlet filter is properly installed.
8.
Once power is connected to the unit, visually check the rotation
of the compressor pump. If the rotation is incorrect, have a
qualified electrician correct the motor wiring. Motor should
turn counter clockwise looking at motor end of cooling fan.
If pump is running in the wrong direction, change
the incoming power leads to correct rotation.
Operation in reverse for more than a few seconds will damage the pump
and is not covered under warranty.
