Introduction
McQuay
water-cooled chillers are completely assembled. factory wired. evacuated.
charged, tested and ready
for installation.
Each unit consists of a water-cooled condenser with
integral subcooler, multiple accessible semi-hermetic single screw compressors. replaceable tube
shell-and-tube evaporator. and complete refrigerant piping. Liquid line components included are
manual liquid line
shutoff
valves. charging valves. filter-dryers. liquid line solenoid valves,
sightglass/moisture indicators. and electronic expansion valves. Other features include compressor
heaters, and an advanced fully integrated microprocessor control system.
The electrical control center includes all safety and operating controls necessary for dependable
automatic operation. (the high and low pressure controls are external from the electrical control
center). Compressors are protected by solid-state overload protection and over temperature
protection. Field installed fused disconnect S w itch (furnished by others) offers additional protection.
Receiving and Handling
Inspect the unit immediately after receipt
for possible
damage. The unit is shipped FOB factory and
all claims for handling and shipping damage are the responsibility of the consignee. Leave the
shipping skid in place until the unit is in final position. This will aid in handling the equipment. Use
extreme care when rigging the equipment to prevent damage to the control center. or refrigerant
piping. See Dimensional Data for the center of gravity of the unit.
Lift the unit by fastening the ri gging hooks to the four corners of the evaporator where the rigging
eyes are located (see Figure I ). Use spreader bars between the ri gging lines to prevent damage to the
control center.
Figure I, Rigging Eyes
Rigging eyes
Rigging eyes
IM 663
3
