Filter
Top Products
Section VIII - Power$ync II
™
Operation
32 Quincy Compressor
®
- QSD™
• Introduction to Power$ync II™ (version 1.04)
• Back-up Mode Operation
• Single Machine Operational Mode
• Multiple Machine Operational Mode
• Pressure Settings
• Network Installation
• Network Voltage Tests on Power$ync II
®
Systems
• Network Setup
• Start-up
• Power-up Displays
• Start-up Displays
• Operational Displays
• Compressor Settings and Maintenance
Displays
• Cautionary and Shutdown Displays
• Shutdown Log Messages
Introduction to Power$ync II
™
Always disconnect and follow lockout/tag-out
procedures before attempting any repair or
adjustment to any electrical component on this
compressor.
The Power$ync II
™
control for the QSD model
compressors consists of a two-stage oil-free airend and an
associated computerized controller. Together, these
features have been designed to provide the best full-load
and unloaded efficiencies available in the compressor
industry. Besides providing outstanding single machine
efficiencies, this control includes multi-machine control.
This control uses four pressure transducers and four RTD
temperature probes for the computerized controller. The
pressure transducers are located in the control panel.
Each transducer is plumbed to its own specific location.
Pressure is measured at the discharge of stage one,
discharge of stage two, and the discharge of the package.
Package discharge is located on the customer side of the
package check valve. Fluid pressure is also measured.
The RTD temperature probes are installed at the
discharge of each compressor stage, at the inlet of stage
two and at the discharge of the package.
There is a coolant flow switch to prevent the unit from
running if there is no coolant flow. If the unit is shut
down by the coolant flow switch, the control will display
‘Emergency Stop Button Pressed’.
Back-up Mode Operation
The Power$ync II
™
control on QSD
™
compressors has a
built-in feature not found on other oil-free compressors.
In the unlikely event of a failure of any component of the
electronic control, the electronic control may be switched
off and the machine operated in Back-up Mode until the
problem is taken care of.
The Back-up Mode must not be used to bypass a
shutdown condition that occurred in Power$ync II
™
Mode. The cause of the shutdown must be found and
corrected before operating the compressor any further.
The Back-up Mode must not be used for continuous
operation.
The Back-up Mode is a separate control circuit using
pressure switches, snap disk temperature switches and a
PLC. The settings of the pressure switches should be
verified before operating in this mode. After
disconnecting power, PS1 should be set to open at the
unload pressure of the package and is the only adjustable
pressure switch. PS2 and PS3 are not adjustable and are
factory set to open at 23 psig. PS4 is not adjustable and is
factory set to close at 15 psig.
With these settings verified, activate the Back-up Mode
as follows:
1) Disconnect power from the compressor.
2) Open the electrical enclosure door, and turn the
selector switch to Back-up Mode.
3) Close the electrical enclosure door and reconnect
power to the compressor.
4) Wait thirty seconds and press START.
Do not switch modes with power on the compressor!
!
WARNING