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YK series manual reset pressure controller

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Classification:

Refrigeration accessories

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Product Details

Features

◆ It adopts inch pipe thread quick joint or copper pipe (including capillary) welding connection structure, which is easy to install and can meet different needs.

◆ The shell adopts two installation methods: plate-mounted (with mounting ears) or wire-mounted (without additional fixing), which can be selected by users.

◆ The sealed double-fuse stainless steel sensor ensures that the switch connector is automatically and quickly disconnected under pressure, and the connection between the switch connector and the pressure in the system is cut off, and the system does not cause damage to the machine due to accidental switch-on and startup Safe and reliable.

◆ The independent automatic disconnect and manual reset dual structure design greatly improves the safety and reliability of pressure protection.

 

Typical outline drawing

 

working principle

◆ When the pressure in the system is higher than the rated safety pressure, the pressure-sensitive disc in the sensor will act instantaneously, pushing the safety disc through the push rod to reach the locked position, and at the same time pushing the switch through the connecting guide rod through the safety disc to disconnect
. When the pressure is lowered, the induction disc will automatically reset, because the fuse disc is already in the locked position and cannot be automatically reset, and the switch cannot be turned on. Only when the external button is pressed and the fuse disc is forcibly unlocked and the switch connector
is turned on, the system can resume normal operation.

 

use

◆ This series of pressure switches are suitable for various air-conditioning refrigeration systems with special requirements for pressure protection, as well as a wide range of occasions where the pressure system of various equipment and tools has the effect of overpressure protection. The pressure switch can be installed directly on the pipeline or
on the equipment panel according to equipment requirements.

 

Design Parameters

◆ Working pressure range: 145~800PSI (1 ~-5.5MPa)

◆ Bursting pressure: 5000PSI

◆ Ambient temperature: -30℃～+80℃

◆ System medium temperature: -50℃～+120℃

◆ Electrical specifications: the conventional electrical capacity is 125VA at 24Vac, and the conventional electrical capacity is 375VA at 120/240Vac

◆ Dielectric strength: AC700V/S between the disconnected contacts, AC2000V/S between the terminals and the shell

◆ Safety withstand pressure: the pressure that the pressure controller can withstand does not affect the set value of the action.

Maximum working pressure range Safety withstand voltage
145PSI(1MPa)~400PSI(2.75MPa) 600PSI(4.1MPa)
>145PSI(2.75MPa) 800PSI(5.5MPa)

 

Typical structure diagram

 

Typical interface diagram

 

Electrical schematic diagram

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YK series ultra-high pressure automatic reset pressure controller (for CO <sub>2</sub> refrigerant)

YK series single-pole double-throw automatic reset pressure controller

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