PSC Wiring Maneurop R407C Hermetic Piston Compressor MTZ40JH4AVE

Industrial Refrigeration Maneurop Reciprocating Compressor MTZ40JH4AVE

Product description:

The trickle circuit provides the facility of heating the compressor crankcase by feeding a small current to the auxiliary winding and the run capacitor.
By using PSC or CSR starting systems, compressor models MT / MTZ 018 - 022 can be operated without crankcase heaters as the heater function is provided by the trickle circuit.
For the larger single phase compressor models MT / MTZ 028 - 064, the use of the PTC crankcase heater is recommended.
PSC wiring may be used for refrigerant circuits with capillary tubes or expansion valves with bleed ports. Pressure equalization must be ensured before start-up because of the low starting torque characteristics of this
system.

CSR wiring provides additional motor torque at start-up, by the use of a start capacitor in combination with the run capacitor. This system can be used for refrigerant circuits with capillary tubes or expansion valves. The start capacitor is only connected during the starting operation, a potential relay is used to disconnect it after the start sequence.
The single phase compressor motors are internally protected by a temperature/current sensing bimetallic protector, which senses the main and start winding currents, and also the winding temperature. Once the protector has tripped, it may take up to two to four hours to reset and restart the compressor.
Check that power supply corresponds to compressor characteristics (refer to compressor nameplate).

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