Water-Cooled Ultra-Low Temperature Process Chiller

Cooling Capacities

oC	-40	-50	-60	-70	-80
KW	16	12.9	8.4	4.6	1.8

Instrumentation and Controls

Setpoint range	-40oC to -80oC
Temperature stability	+/- 1.0oC
Certification	UL 508A Industrial control panel
Control panel enclosure	NEMA 4X Stainless steel
Operator interface	4″ Color touch-screen graphic display
Control system	Programmable logic controller (PLC)
Alarms monitored	Temperatures, pressures, equipment status
Communications	Modbus protocol, RS-232 and RS-485 serial interfaces
Temperature sensor	Internal Pt100 RTD
Tank level indication	Electronic analog level transmitter

Refrigeration System

System type	2-Stage cascade refrigeration cycle
High stage refrigerant	R404A
Low stage refrigerant	R23
High stage compressor	4-Cylinder semi-hermetic reciprocating compressor
Low stage compressor	2-Cylinder semi-hermetic reciprocating compressor
Condenser cooling water	35 KW at 15oC
Condenser	Water-cooled shell and tube heat exchanger
Cascade condenser	Stainless steel brazed plate heat exchanger
Evaporator	Stainless steel brazed plate heat exchanger

Recirculation System

Secondary refrigerant	Syltherm XLT, Dynalene HF-LO, or similar heat transfer fluid
Expansion tank	25 Gallon stainless steel reservoir
Piping	Welded stainless steel piping and valves
Pump type	Magnetically coupled external gear positive displacement pump
Rated pump flow	10.75 GPM
Maximum pressure	45 PSI

Electrical Power Requirements

33 Full Load Amps (FLA)	460 Volts	3-Phase	60 Hz
66 Full Load Amps (FLA)	208-230 Volts	3-Phase	60 Hz

Physical Parameters

Materials of construction	Stainless steel frame and cabinet, with 4 casters
Dimensions (L x W x H)	34 x 72 x 72 (in.)
Weight	1,850 lbs.
Cooling water pipe fittings	1-1/4″ MNPT
Recirculation pipe fittings	3/4″ FNPT

System Warranty

12 Months

Parts and Labor