Atlas Copco Industrial Cast Iron Piston Compressor CR15-TS

Warning: Switch off the voltage before removing the cover of the switch

Is the air pressure switch pressurized?

Reinstall the cover after an adjustment has been made and before the voltage is switched on again

Is the cover of the switch reinstalled?

The maximum pressure is controlled by adjusting screw

Turn the screw to adjust the maximum pressure

The pressure difference is adjusted by means of screw

Turn the screw to adjust the pressure difference

Sign off on the MDR4 Pressure Switch Adjustment

Warning: This procedure requires trained personnel with PPE!

Close the air outlet valve, depressurize and disconnect the hose or pipe from the valve

Start the compressor and run it until it stops automatically

Remove the cover from the air pressure switch and, with the air receiver now under pressure, turn the adjusting screw one turn clockwise to increase the stopping pressure

Switch on the voltage, slightly open the outlet valve and start the compressor

Gradually close the outlet valve while checking the air pressure gauge

If the pressure relief valve has not opened at the pressure specified in Compressor data, it must be replaced by a new one

Inspect the pressure switch diaphragm and contacts

Inspect the contact points in the motor

Inspect the contact points in the starter

Warning: Always ensure the compressor is turned off and fully depressurized before starting any maintenance tasks.

Check lubricant levels several minutes after stopping

Drain and replace contaminated lubricant

Drain moisture from the receiver tank, drop legs, and air traps

Visually inspect the compressor and safety guards

Check for unusual noise or vibration

Check pressurized components for rust, cracks, or leaks

Sign off on the maintenance tasks

Manually operate the pressure relief valves

Clean cooling surfaces of the intercooler, aftercooler, and compressor

Check for air leaks in the compressor and air distribution system