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Control Board, Single Phase Compressor Training Unit Manufacturer,Supplier and Exporter in India

Product Code : EL-TWL-13122
Jlab Export is a leading Control Board, Single Phase Compressor Training Unit Manufacturer,and suppliers in India

This control board is built around a single phase compressor running on R-134a, with the parts needed to show the common controls of refrigeration and air conditioning systems. Students wire the circuit with patch cords and work the low pressure control and high pressure cutout by closing shut-off valves. It runs on 220 V, 50 Hz and comes with an operational manual.

Specifications

Compressor	Single phase
Refrigerant	R-134a
Electrical supply	220 V, 50 Hz
Wiring	Components wired into the system with patch cords
Pressure controls	Low pressure control and high pressure cutout
Valves	Shut-off valves in the suction and pressure lines
Motor starting	PSC and capacitor start, run capacitors supplied
Included	Operational manual
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

How the Pressure Controls Are Tested

Closing the suction line valve slowly pulls the suction pressure down until the low pressure control opens and stops the compressor. Opening it again lets the pressure rise, and the control restarts the compressor at its cut-in point. The gap between the two readings is the differential. On the pressure line, throttling the valve raises the head pressure until the high pressure cutout trips, so students see each control act on a gauge.

Workshop Practice on the Control Board

Trainees read suction and head pressure on Manifold Gauges For Refrigeration Systems fitted to the service points while they set each control. A Clamp On Meter on the supply lead shows the starting surge and the running current. With the power off, a Megger checks the motor winding insulation to the compressor body.

The patch cords let the class rewire the motor as a PSC circuit and then as a capacitor start circuit, and compare how each one starts. A Compressor Start Relay of the current type is a good part to study beside the board, since it does the same job in many domestic units.

Frequently Asked Questions

What is the difference between PSC and capacitor start?
A PSC motor keeps a run capacitor in series with its start winding all the time, which gives smooth running but a modest starting torque. A capacitor start circuit adds a start capacitor for the first moments only, giving a stronger start against pressure.

What does the high pressure cutout protect against?
It stops the compressor when head pressure climbs too high, for example when the condenser fan fails or a valve is shut. On this board the pressure-line valve raises the head pressure on purpose, so students can watch the cutout trip and then reset it.

Which refrigerant and supply does the unit use?
The compressor runs on R-134a, and the board needs a single phase 220 V, 50 Hz supply. Use gauges and service tools rated for R-134a when you connect to the system.

How is it different from the Refrigeration Demonstration?
The Refrigeration Demonstration shows the whole cycle cooling a small cabinet, with sight glasses on the refrigerant lines. This board puts the electrical and pressure controls around the compressor first, and the students wire them with patch cords.