- 3 -
COMPONENTS
STANDARD FEATURES
Size/Range
D
37 Models from 70 to 1000 TR [246 to 3517 kW].
D
Multiple compressor units provide redundancy, and
favorable part load efficiency.
D
One-year parts warranty at no extra cost.
Compressor(s)
D
Improved, quiet, reliable MSC Vertical Rotary Screw
Compressors with up to 2 integral oil separators.
D
Optimized for R134a and optimized volume ratio for
best efficiency.
D
UL listed.
D
Improved rpm and noise level.
D
Optimized rotor drive.
D
Improved rotor and anti-reverse rotation bearing
design.
D
Optimized VI port position and geometry.
D
Multiple rotary screw compressors design for better
reliability and redundancy.
D
Welded hermetic design with no requirement for
internal parts service, no periodic compressor tear
down and overhaul, and eliminates casing leakages.
D
Consistent loading and unloading with dependable
slide valve mechanism.
D
No external oil pump required.
D
Double-delta motor winding with 1/3 lock-rotor amps at
start-up. Star-delta motor winding for MSC 226 mm
series.
D
Faulty or damaged compressors reworkable at
minimal cost at various Dunham-Bush’s authorized
compressors reworked facilities. To ensure minimum
downtime during rework of faulty or damaged
compressor, Dunham-Bush can arrange to provide a
substitute reworked compressors while the faulty
compressor is being reworked or repaired.
D
Vapor injection cycle to increase capacity and improve
efficiency.
Evaporator/Condenser
D
Cleanable and Removable Integral Fin Copper Tubes.
D
One, Two or Three Water Passes Available.
D
Removable Water Heads.
D
Victaulic Groove Water Connections.
D
Vessel designed according to ASME Code, approved
and certified by JKKP.
D
Relief Valves(s) standard - 3/4" FPT or 1” PPT.
D
Full Pump Down Capacity in Condenser.
Controller/ Electrical
D
Proactive Advanced Controller adapts to abnormal
operating conditions.
D
Tolerant and accommodating of extreme conditions at
start-up.
D
Capable of controlling multiple chillers, cooling towers,
pumps, etc.
D
Circuit Breaker on each multiple compressor unit.
D
Unit Mounted Contactor and Time Delay for reduced
Inrush Start.
D
Current and Voltage transformers.
D
Under Voltage Phase Failure Relay.
D
Indicator lights for Compressor Overloads, Micro
Alarm, Control Power, Compressor Control Circuit.
Heat exchangers with
cleanable and removable
enhanced copper tubes
Compact, quiet MSC
Compressors
Controller for precise
and reliable control
Vessels designed according
to ASME code
Bolted construction
for easy knockdown
Economizer to
enhance performance
Summary of Contents for WCFX-E Series
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