General Specification
Compressor
McQuay Mini Chillers are equipped with highly efficient, reliable and silence scroll compressor, double for
MAC080C(R) to MAC150C(R), one for MAC030C/CR to MAC070C/CR.
Air-Cooler Condenser
The air-cooled condenser coil consists of staggered rows of 3/8’’ O.D. seamless copper tube, mechanically
expanded into die formed aluminum fins to ensure optimum heat exchange capability.
Condenser Fan Motor
To achieve the high air change requirement, the unit is equip with the high air flow propeller fan. The fan is
direct driven by weatherproof motor to ensure reliable continuos operation.
Evaporator
The heat exchanger is made of stainless steel plates closely arranged and brazed together to ensure high
heat exchange efficiency. The complete heat exchanger is insulated with thermal insulation closed cell
rubber foam to give optimum thermal insulation.
Refrigerant Circuit
The refrigerant circuit is factory brazed and evacuated before accurately charged with R22 to ensure
optimum operating requirement. To ensure flawless continuous operation, each refrigerant circuit is
equipped with a carefully sized capillary tube.
Additional Safety Protection
The units are equipped with intelligently designed safety control to ensure continuous safe operation. High
and low pressure switch is provided to prevent the compressor damage resulting from both abnormally high
discharge head pressure or low pressure due to insufficient gas. The compressors are provided with crank
case heater to prevent liquid migration during the off cycle and also to ease the start up of the unit.
The standard electronic controller provides accurate water temperature control in the circuit by closely
monitoring and reacting to the input from the water entering temperature, water leaving temperature and
ambient air temperature.
Flow switch is provided in the unit to protect against damage to the water pump.
During abnormal condition, the electronic controller will turn the unit off and the then display the faulty of
operation. (See
Troubleshooting
sheet)
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