User manual

Changing the check valve

The check valve is subject to operation related wear. It needs to be changed once every

year. Please proceed as follows:

1. Cut the air hose with a pair of scissors just above and below the check valve.

2. Connect the hose connections of the new check valve with the air hose. Make sure

that the arrow on the check valve in the air hose points in flow direction (i.e. towards

the outflow nozzle) (Fig. 2/A).

Cleaning the outflow stone

Clean the outflow stone if the outflow capacity drops. Please proceed as follows:

1. Carefully lift off the bottom cover (Fig. 3).

2. Carefully pull on the hose connection (Fig. 4/1), in order to remove the outflow stone.

If necessary move the hose connection to and fro, in order to loosen the outflow

stone.

3. Rinse the outflow stone with clear water and, if necessary, clean it with a brush.

4. Put the outflow stone back into place.

5. Reinstall the bottom cover.

6. If the outflow capacity is still insufficient, the outflow stone must be replaced.

Replacing the outflow stone

The outflow stone is subject to operation related wear. Replace the outflow stone if the

outflow capacity drops. Please proceed as follows:

1. Cut the air hose with a pair of scissors just next to the outflow stone connection (Fig.

4/1).

2. Carefully lift off the bottom cover (Fig. 3).

3. Carefully pull on the hose connection (Fig. 4/1), in order to remove the outflow stone.

If necessary move the hose connection to and fro, in order to loosen the outflow

stone.

4. Assemble the new outflow stone.

5. Plug the air hose onto the hose socket of the outflow nozzle (Fig. 4/1).

6. Reinstall the bottom cover.

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