Quincy QGV Series, Instruction Manual

Page: 32 / 90

Section IV - Operating Procedures
The ‘Local Fixed Speed Control’ screen is
accessed by touching the ‘Local Control’
button at the compressor operation screen.
This screen is used primarily for test
purposes.
To observe the motor power consumption
and delivered pressure at a fixed speed:
Touch the ‘PID On/Off’ button to turn the
PID control off.
Touch the button next to ‘Input Fixed
Speed’ to enter the desired fixed speed
(within limits of the motor).
notiCe!
If the PID controller is off, the pressure
is not regulated and may, therefore,
climb higher than the relief valve
setting.
Touch ‘Return’ to return to the ‘
Compressor Operation’ screen, then
‘Return’ again to return to the ‘Menu
Selection’ screen.
Compressor Operation -
Some drive settings can be altered in this
menu selection, however, the appropriate
settings are set at the factory and should
not be changed without approval from the
factory.
Touch ‘Return’ to return to the ‘Menu
Selection’ screen.
Default operational settings for QGV
compressors:
Discharge Shutdown Temperature:
235°F
Reset Temperature (temperature to which
the compressor needs to cool before
restarting): 200°F
Fan Off Delay (time that the drive fan will
run after the drive has stopped):
2 minutes
The motor settings are for it’s ramp times,
and should be similar to the PID loop’s
integral time, so that the motor speed may
track the PID control output more closely.
Local Control -
26
Quincy Compressor-QGV Series