Screw Compressor Central Chiller
Chapter 2: Functional Description
11
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides operation, installation, and maintenance instructions for Screw
Compressor Central Chillers. Model numbers are listed on the serial tag. Make sure you
know the model and serial number of your equipment before contacting the manufacturer for
parts or service.
Our screw compressor central chillers are designed to generate cooled water at carefully
controlled temperatures for use in plastic processing systems. Screw Compressor Central
chilling systems are sized to meet the specific requirements stated by the Customer at the
time of purchase.
2-2 General Description
Screw compressor central water chilling stations are available in water-cooled and remote air-
cooled designs. They differ only in the condensing media used. These units are configured
with two independent circuits using multiple
compressors for each circuit. This manual lists
information specific to these units.
Screw Compressor central chilling stations may be configured with stainless steel pump tanks
for use as reservoirs for chilled water processes. These dual-well models hold hot and cold
water before and after it is pumped through the chiller. Tanks have recirculation pump(s) to
send return water to the chiller and process pump(s) to pump cooled water directly to process.
Standby pumps may be utilized to distribute pump service or to allow uninterrupted chiller
operation during pump maintenance.
Properly installed, operated, and maintained Screw Compressor Central chilling stations
provide many years of reliable operation.
To get the most satisfaction from your new
chiller, read and follow the instructions in this manual.
2-3 Standard Features
Mechanical Features
x
Two independent refrigeration circuits
x
High-efficiency screw compressors
x
Stainless steel brazed plate (60 & 75) Shell & Tube (90-195) evaporators
x
Cleanable shell and tube condensers (water-cooled models)
x
High and low refrigerant pressure safeties
x
Evaporator water piping manifold (Condenser manifold optional)
x
R-134a refrigerant
x
1 year warranty on parts and labor
