Shut down procedure
Release the pressure in the system by pressing and holding down the 0 -button and at the same time pressing the I-button once.
Disconnect the pump unit from the compressed air supply or power mains as may be the case.
Turn the adjustment knob on the pressure adjustment valve all the way anti-clockwise and thus set the maximum pressure to 0 bar.

Disconnect the pump unit from the hoses.
Never use spanner or any external tool to open the hydraulic connections. Ensure all pressure is released by pressing the solenoid valve again if couplings hard to open. Shake the hoses near the couplers while keep trying to unscrew the connections.