Water Cooler Trainer
(AR-019_)
  • Obtaining different pressures and temperatures values using pressure gauges and temperature sensors digital displays.
  • Using the above values to calculate coefficient of performance C.O.P. Draw refrigeration cycle on the P-H diagram.
  • Identify different mechanical faults and their causes and symptoms.
  • Simulation of different system electrical faults:
    • Startup capacitor fault.
    • Thermostat fault.
    • Overload fault.
    • Evaporator fan fault.
    • Startup relay fault.
    • Line fault.
  • Compressor
    • Hermetic Reciprocating Power: 1/2 HP
    • Refrigerant: R-134a
    • Voltage: 220V - 50Hz
    • Temperature Range: -15°C to +10°C
    • Thermostat
    • Range: -30°C to +13°C
    • Differential: 8°C to 2°C
  • Low Pressure Control
    • Range: -2 bar to 7.5 bar
    • Differential: 4 bar to 0.7 bar
  • High Pressure Control
    • Range: 8 bar to 32 bar
    • Differential: 6 bar to 2 bar
  • Measuring Range:
    • Pressure: 0 – 30 bar
    • Temperature: -10 - 260°C
  • Water Cooler Room Dimensions (L×W×D):
    • 553mm x406mm x753mm
  • Condenser: Air Forced Type
  • Evaporator
    • Fan Speed: 1500 r.p.m.
    • Air Flow: 230m3/hr.
  • Expansion Valve
    • Inlet size: 3/8 inch
    • Outlet Size: 1/2 inch
    • Tube Length: 1.5 mt.
  • Working pressure : 34 bar
  • Water Cooler Trainer (AR - 019)
  • Hard Copy User manual.

This trainer has been designed to demonstrate main mechanical connections of a small water cooler system, including Freon pipes connections, while all electrical connections are already pre-connected, and also introduce the trainee to its common electrical & mechanical faults. The trainer consists of main typical components of a real water cooler including compressor, evaporator, condenser and an expansion valve.

  • The compressor utilized in the trainer is of a hermetic reciprocating type.
  • The trainer structure is vertical square stand open from all directions for a better observation of all system components.
  • The trainer vertical stand is divided into four parts featuring different panels and components of the system.
  • First upper part is the measurements panel which includes pressure gauges and temperature sensors with digital displays to monitor the system pressures and temperatures at four different points.
  • Second part is the electrical panel which includes the electrical diagram of the system printed on it with test points at different points in the circuit and the trainee can make different measurements using external multimeter device.
  • The electrical panel houses also AC power source, ON/OFF switch and different system faults switches.
  • Third part is the components panel fixed on it different control and protection components.
  • The components panel consists of a thermostat, low & high pressure switches, expansion valve, flow control valves, sight glass and a filter dryer.
  • Fourth part is a small refrigerator which simulates the real water cooler body with the evaporator inside.
  • In the components panel you can notice that pressure control elements are electrically incorporated in the system while mechanical connections are left unconnected and the trainee has to integrate them correctly in their right locations in the piping system.
  • In the components panel you can notice that the thermostat is electrically incorporated in the system while it’s sensing probe is left free and the trainee has to integrate it in the place he needs to control the temperature in (inside the water cooler body).
  • A sight glass is provided in the components panel to observe the refrigerant flow in the liquid line.
  • If you had a look at the components panel from the back, you will find the compressor, the condenser and the condenser fan.
  • The water cooler body can be opened and closed via a special designed door equipped with two metal locks to guarantee a good temperature control inside the room.
  • The unit is fixed on four caster wheels to eases its motion inside the laboratory, these caster wheels are equipped with breaks to prevent the trainer from sliding during the operation.
  • The unit is treated against rust and electrostatically painted.