These parameters must be calibrated before starting the air compressor.

Before preparing a new air compressor after installation, or restarting it after shutting down, it is best to first confirm whether these parameters have been calibrated.

1.Host steering

If the main power supply has been removed during the maintenance of the screw air compressor, pay attention to the forward and reverse rotation of the motor after reconnecting the power. The steering of the motor should be based on the steering of the main unit. For the correct rotation of the air compressor main unit, please check the steering direction marked on the main unit. icon.

Correction method: Just swap any two power lines in the three-phase power supply.

2.Coupling

If the air compressor is driven by a belt, the tightness of the belt should be between 10 and 20 mm. If the air compressor is driven by a coupling, after installation, turn the motor and host by hand and check when the coupling rotates. balance. Air compressor couplings basically use elastic couplings, and they can be ignored when the balance deviation is not large.

3. Loading and unloading ratio value

When setting these three parameters, the unloading value should be determined first. The unloading value should be determined based on the rated pressure of the screw air compressor and the pressure required at the gas end. After the unloading value is determined, the loading value should be set. The difference between the two should be determined. The pressure difference should be between 0.1~0.2Mpa. After setting the unloading and loading values of the screw air compressor, finally set the proportion value. The proportion value should be set between the unloading value and the loading value.

Correction method: Set this parameter in the microcomputer controller (if the screw air compressor is controlled by buttons, the loading and unloading parameters should be adjusted from the pressure switch, and the proportional value should be at the adjusting nut of the proportional valve on the unloading valve. Adjust this value.

4.High temperature protection value

When the screw air compressor is working normally, its temperature should be between 65~98℃. The automatic shutdown temperature of over-temperature protection shall not exceed 105°C.

5. Unit internal pressure

The internal pressure of the unit should be between 0.2~0.45MPa.

Correction method: The pressure value should be carried out when the unit is unloaded and running. The value should be adjusted on the adjusting nut of the minimum pressure valve. In order to facilitate reading of the set value, the pressure detection point should be taken before the minimum pressure valve and the pressure should be installed. surface.

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