McQuay AGR 090AS User Manual

IOMM AGR AGR 055A through 100A 55
The Alarm Light on the control panel will illuminate if either circuit has a high head pressure
occurrence or a compressor motor protection occurrence. Freeze protection would be indicated on
the optional Zone Terminal. If a circuit is off and the panel alarm light is not on, try depressing the
Freezestat reset on the control panel. There is a five minute time delay after depressing the reset
button.
The chiller must have the manual reset system alarm conditions cleared before normal
operation can resume. If the alarm which occurred is an auto-clearing alarm, once the condition has
corrected, the chiller will resume normal operation provided the anti-cycle timers have cleared and
sufficient load exists.
System Alarm Conditions
The “System Alarm Conditions” are those alarms which are common to both refrigeration circuits
and require all compressors to be temporarily shut off or locked out, whichever applies.
System alarm conditions are:
• Loss of Water Flow
• Phase Voltage Monitor PVM (Optional)
• Ground Fault Protection GFP (Optional)
The Alarm Light on the control panel will illuminate if either the PVM or GFP has a fault
occurrence. Loss of water flow is indicated on the optional Zone Terminal.
The chiller must have the manual reset system alarm conditions cleared before normal
operation can resume. If the alarm which occurred is an auto-clearing alarm, once the condition has
corrected, the chiller will resume normal operation provided the anti-cycle timers have cleared and
sufficient load exists.
ZONE TERMINAL (optional)
The Zone Terminal (ZT) is a hand-held or unit mounted device that monitors and adjusts your
McQuay Global Reciprocating Chiller information.
A standard telephone-style jack directly connects the ZT to the McQuay Global UNT controller.
Features
• Portability
• Simultaneous monitoring of three different settings or values
• Easy operation with only seven buttons
• Flashing numbers to show which items are ZT adjustable
• Flashing symbols to notify you of alarm conditions
Capabilities
With the ZT, you can:
• Quickly identify a chiller alarm and its location
• Monitor and adjust up to 18 different settings

McQuay AGR 090AS Specifications

General

Brand	McQuay
Model	AGR 090AS
Category	Chiller
Language	English