The five major valve components of an oil-injected screw air compressor are: the unloading valve, the minimum pressure valve, the oil cut-off valve, the check valve, and the temperature control valve. The following will explain the function of the unloading valve and its fault handling.
Unloading valve function
When the gas consumption changes, the intake valve adjusts the opening degree of the valve body through the control system to match the gas consumption. It is a valve component that controls the gas production and non-gas production of the air compressor.
Common corresponding faults
1. The screw air compressor is not loaded. The fault control panel display (no alarm; operating status' loaded '; very low or '0 'fuel injection pressure; head outlet temperature is 70 ° C) indicates that the unit is not loaded. The problem lies in the unloading valve body. The control circuit. The parts such as the solenoid valve for loading and unloading need to be inspected one by one to eliminate faults.
2. The air compressor does not unload. The fault control panel display (no alarm; operating status' unloading '; fuel injection pressure increase >4; head outlet temperature >80℃) indicates that the unit is not unloading. The problem lies in that the unloading valve body, control circuit, loading and unloading solenoid valve and other parts need to be inspected one by one to eliminate faults.