808 Reverse Cycle Refrigeration and Air Conditioning Training Unit

808 Reverse Cycle Refrigeration and Air Con Training Unit

The unit demonstrates both refrigeration and air conditioning principles as well as operation of two evaporators on one compressor by means of an evaporator pressure regulator. The hermetic condensing unit has a high starting torque motor with built-in winding protector, air-cooled condenser and liquid receiver. A water cooled condenser is provided with an automatic condenser pressure regulator. Both the forced air evaporator and the static evaporator has a 3/8” O.D. copper tube coil block with aluminium fins. The Flow Controls may be selected by hand valves. These comprise: Automatic expansion valve; internal equalised thermostatic expansion valve; External equalised thermostatic expansion valve. and Capillary tube with separate filter drier.

Reverse Cycle Operation is achieved with a solenoid reversing valve.

An evaporator pressure regulator allows the two evaporators to operate at different pressures/ temperatures. Controls include : High pressure switch; Low pressure switch; Compound Gauge; High Pressure Gauge.

An electrical control box is mounted on the back panel and includes indicators/warning lamp, on/off evaporator and condenser fan and reverse cycle contactor and overload, as well as residual current device for protection against earth leakage.

808 Reverse Cycle Refrigeration and Air Conditioning Training Unit

808 Reverse Cycle Refrigeration and Air Conditioning Training Unit

The unit is mounted in a steel frame with stainless steel base and back panels and incorporates:-

Hermetic Condensing Unit:

Having a high starting torque motor with built-in winding protector, air-cooled condenser and liquid receiver

Remote Water-cooled Condenser

Forced Air Evaporator:

Coil block: 3/8” O.D. copper tube with aluminium fins

Flow Controls:

Automatic expansion valve.

Internal equalised thermostatic expansion valve.

External equalised thermostatic expansion valve.

Selection by handwheel valve.

Static Evaporator:

Coil block as for Forced Air Evaporator.

Flow Control:

Capillary tube with separate filter drier.

Selection by handwheel valve.

Reverse Cycle Operation:

Evaporator pressure regulating valve for dual-

temperature operation.

High pressure switch.

Low pressure switch.

Compound Gauge.

High Pressure Gauge.

3 – Sight Glasses.

4 – Check Valves to control direction of refrigerant flow.

9 Hand valves

An electrical control box is mounted on the back panel and includes indicators/warning lamp, on/off evaporator and condenser fan and reverse cycle contactor and overload, as well as residual current device for protection against earth leakage.

 

Electrical

A:   13Amp.220-240 Volts, Single Phase, 50Hz (With earth/ground).

  OR

B:     26Amp.110-120 Volts, Single Phase, 60Hz (With earth/ground).