JBL PRO AIR a 50, Quick Manual

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2. We urgently recommend the use of the enclosed JBL ProSilent Safe non-return valve in order to prevent water from
flowing back into the appliance.
3. Like any other air pump, JBL PROAIR Air Pumps may “wander” on surfaces as a result of their own vibration. Prevent
this by mounting on a surface that is rough and absolutely horizontal if possible. The air pump should be secured with
a wire or cable that is threaded through the hole on the bottom of the housing and attached to the wall with a hook as
a precaution.
4. Cut an air hose of a suitable length and connect one end to the air connection of the air pump. Attach the other end of
the air hose to the air connection of an air stone or another air-operated article. Place the air stone or the air-operated
article in the aquarium. Avoid an excessively long air hose, since this can decrease the efficiency of the air pump.
5. Connect the air pump to the power supply.
Maintenance (Fig. C)
External care: Remove any dirt on the housing with a moist cloth. Do not immerse the appliance in water!
Avoid a decrease in efficiency:
Check the air filter located on the bottom of the appliance regularly for dirt and replace as necessary.
Air stones and other air-operated articles become clogged by limescale, etc. in the course of time. Therefore, the air stones
should be checked from time to time and replaced if necessary. Check other air-operated articles for optimum passage and
clean them if necessary
Diaphragm replacement: Decreasing efficiency with no clogging of the air stones is an indication of a defective diaphragm.
The diaphragm may need to be replaced every 6 - 12 months. The diaphragm and other wearing parts can be purchased as
a pre-assembled spare parts kit with an anchor and a noise suppression chamber. Please make sure to always replace the
entire kit in order to ensure optimum efficiency:
1. Remove the screws on the bottom of the appliance and lift the lid of the appliance.
2. Pull the complete unit consisting of the diaphragm, anchor and noise suppression chamber upwards and out.
Reverse the procedure to insert the new unit.
3. Replace the housing lid and screw it tight.
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