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Precautions for installation and adjustment of commercial refrigeration JC3.5 differential pressure controller
Precautions for installation and adjustment of commercial refrigeration JC3.5 differential pressure controller are as follows.
(1) The high and low pressure bellows should be connected to the oil pump outlet and crankcase respectively, and do not connect them in reverse.
(2) When connecting to the electrical circuit of the system, it must be connected according to the circuit diagram according to the working voltage. The original X-end and Di-end wiring must be removed, and the X-end and D2 must be connected to ensure the normal operation of the system.
(3) The oil pressure required for the normal operation of the compressor should generally be 0.075~0.15MPa for the old series compressors with external gear oil pumps and no energy adjustment. For those with a rotor-type oil pump and a commercial refrigeration system with energy adjustment For the new series of compressors, its oil pressure should be between 0.1 and 0.12MPa, and the given value of oil pressure can be adjusted by itself according to operating needs. Generally, it can be adjusted to about 0.15MPa.
(4) After the controller is connected to the power supply, it must press the reset button to work normally, otherwise it will not start, and it will be mistaken for an accident, but it works normally.
(5) After the delay mechanism has worked once, it will take 5 minutes to wait for the heater to cool down before it can resume normal operation.
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