Method and System for a Portable Refrigerant Recovery Unit Load Controller

摘要

A system and methods associated therewith for providing a load controller for a refrigerant recovery unit are disclosed. The load controller can be controlled to operate when the current drawn by the motor increases due to pressure changes caused by abnormal refrigerant flow or during activation of the motor in order to lower the pressure. In some aspects of the present disclosure, the load controller can lower the pressure by recirculating some of the pressure load through the opening of a compressor bypass loop line. In some embodiments, the current/pressure load may be monitored during the operation of the refrigerant recovery unit and set to act as an emergency shut off and alert system to the user when the system malfunctions.

主权项

1. A method of controlling a load of a refrigerant recovery unit, the method comprising:
receiving refrigerant from a refrigerant system through one or more service hoses that provides fluid communication from the refrigerant system to the refrigerant recovery unit; drawing sufficient current to energize a compressor's motor with a start relay function; and activating with the motor's start relay a solenoid valve to open a compressor bypass loop line during the start relay function to thereby decrease a pressure load placed on the compressor's motor upon starting.