Quincy Compressor QGV 40, Instruction Book

Page: 24 / 132

Instruction book
2012 2039 28 24
Reference Description
I/O I/O Module
ICONS ICONS(cell phone modem)
PB Power Block
OL1 Overload Relay(Drive Motor)
PPR Phase Protection Relay
M2 Delta Contactor(For Y-D start)
M3 Wye Contactor(For Y-D start)
SST Solid State Starter (For Solid State across the line start)
Electrical diagram
Drawing number Type of drive
2012203856 Fixed speed Wye-Delta QSI50-125
2012203857 Fixed Speed Solid State Start QSI50-125
2012203908 Variable speed QGV40-125
2012203913 Fixed speed GAUGE Wye-Delta QSI50-125
A diagram of the electrical system is shown in the parts manual sent with the compressor. A wiring
diagram is also included in the control panel on all Quincy compressors.
Rotation direction indicator - Phase controller
The phase controller enables permanent and easier verification of the rotation direction of the machine by
means of a diode. This prevents any risk of physical damage by disabling the compressor start up in case of
phase reversal or if a phase is disconnected and indicates a machine fault.
Marking on the motor of the standard machine version identifies the motor fan rotation direction during the
start-up phase. Work on the electric network or the machine may change the rotation direction and damage
the compressor which must be detected quickly.