Specifications

8 Catalog WSC/WDC-4
Quieter as Chiller Unloads
Many centrifugal compressors become louder as they unload. McQuay’s design results in a
reduction in sound levels at lower loads, where most chillers spend most of their operating hours.
Power Loss Damage Protection
Unfortunately, loss of electric power without
allowing chillers to proceed through their normal
shutdown sequence is becoming common in
many areas. When this occurs, most compressors
must coast to a stop without benefit of their
lubricant pump running. Poor lubrication at this
point can damage the bearings and reduce
compressor life. McQuay compressors are
equipped with a lubricant reservoir and a piston
with a compressed spring that provides
pressurized lubricant to the bearings during the
coast-down period. Also, the compressors
decelerate quickly due to the low inertia.
Refrigerant Storage Capability - Standard
The condensers on McQuay Distinction Series chillers are
sized to hold the entire chiller refrigerant charge and are
provided with the necessary valves to isolate this charge. This
feature eliminates the need for separate storage vessels in most
applications.
McQuay Startup
All McQuay centrifugal chillers are commissioned by McQuay Factory Service personnel, or by
authorized and experienced McQuay startup technicians. This procedure helps assure that proper
starting and checkout procedures are employed and helps in a speedy commissioning process.
Lubricant reservoir
Piston and spring
Discharge line
check valve
combines with
main liquid shutoff
valve to isolate
the condenser