WhisperAir™ Oil-free Rotary Tooth Compressor
Model Series PCC & PCCMD – 50 HP
Powerex • 150 Production Drive • Harrison, OH 45030 • USA
(T) 1.888.769.7979 • (F) 513.367.3125 • www.powerexinc.com
IN594501AV • 02/2016
Page 15 of 32
3.
Connect the ground wire to the ground terminal as
shown in the figure below – 1 X 3.
Input power and ground
connection for VFD models
are similar, panel layout will vary.
Grounding resistance must
be no more
than 100Ω.
Inadequate grounding may cause malfunction of the
compressor and decrease the product life.
Remote Signals and Remote Monitoring
The Remote Control feature is enabled from the touch
screen. Activating this feature allows an external
contact closure to turn the unit on, open contacts turn
the unit off.
For remote control signals and remote monitoring,
connect appropriate wiring to the designated
terminals in the control box.
Refer to the circuit diagram for detailed information
and terminal numbers.
Alarm Signals: Terminals on the terminal strip provide
external alarm connection points as indicated on the
wiring diagram.
Commissioning
Preparation
1.
Open the center front panel and the back panels.
2.
Unscrew the yellow bolts on the gear case and the
motor and remove the shipping supports (yellow)
– (4)
3.
Check the oil level on the sight glass.
a.
Appropriate oil level is above the center of oil
gauge.
b.
If the oil level is below the venter of the oil
gauge, add oil before performing test
operation (Use only Powerex Rotary Tooth
compressor gear oil or approved equivalent).
4.
Open the control box and make sure all the wires,
including the power cable, are connected.
5.
Confirm the power supply and voltage of the
compressor match and turn on the circuit breaker
or service disconnect.
Close the front panels.
6.
Make sure the touch panel display is illuminated.
Check the Direction of Rotation
1.
Touch “ON” on the switch to start the compressor
and touch “OFF” immediately. While the
compressor is being stopped, check the direction
of rotation to see if it is the same as the direction
Power conductors here
