W&H assistina MB-300 Instructions For Use Manual page 25

Start-up – establishing the air connection
Turn off the central air supply.
Only use clean, filtered compressed air.
Connecting the air connection hose
Removing the air connection hose
Central air supply is switched off.

Push on the air connection hose as far as it will go.

Turn off the central air supply.

Press the ring downwards. At the same time, pull out the air connection hose.

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