Setup Instructions
Decide where you are going to position the air pump. 1.
Remember the pump must remain accessible for
maintenance.
Where possible place the pump above the 2.
aquarium. Avoid placing the pump on a carpeted
surface.
If not possible then ensure that a check valve 3.
(sold separately) is tted to the airline. It is best to
position the check valve as close to the aquarium
as possible.
Attach one end of the air line into your ornament 4.
or air stone
Attach the other end of the airline into the air outlet 5.
of your pump.
Position your pump. Ensure it is not going to vibrate 6.
off whatever surface you place it on.
Ensure your hands are dry, plug the pump in and 7.
turn on. Remember to arrange a drip loop.
Maintenance
Air stone
Replace the air stone every 6 months or when it •
shows signs of deterioration.
If being used in salt water a plastic or ceramic air •
stone is recommended.
Diaphragm
If pump is producing a lot of noise or the ow rate •
has reduced this may be an indication that the
diaphragm assembly needs to be replaced.
Look for any tear or damage on the diaphragm.•
To replace diaphragm assembly follow the •
instructions below.
AP-150R & AP-250
Remove the 2 screws located in the back of the 1.
Pump.
Lift top cover to reveal internals of pump. 2.
To remove diaphragm from assembly - Peel 3.
diaphragm off the air outlet unit
To replace diaphragm remove screw on the 4.
diaphragm anchor
To replace apper valve pull air chamber assembly 5.
up to remove from unit
Remove apper valve cover. Do this to both sides.6.
Replace apper valve.7.
Then reassemble unit. 8.
AP-750 & AP-950
Remove the 4 screws located in the back of the 1.
Pump.
Lift and turn top cover over to reveal internals of 2.
pump.
To remove diaphragm from assembly - Peel 3.
diaphragm off the air outlet unit
Then pull the diaphragm anchor upwards to 4.
remove
To replace diaphragm remove screw on the 5.
diaphragm anchor
To replace apper valve assembly remove air outlet 6.
manifold screw (on the side of pump) to completely
remove the air outlet unit
Remove apper valve cover the apper valve. Do 7.
this to both sides.
Replace apper valve.8.
Then reassemble unit 9.
Troubleshooting
PUMP DOES NOT WORK
1. Ensure the plug is inserted correctly and the switch
is in the on position
THE MOTOR IS WORKING, BUT THERE IS NO AIR
COMING OUT OF THE PUMP
1. Check that the Air Line is not kinked
2. Check the Air Stone and replace if needed.
3. There is a rubber diaphragm inside the pump which
may have warn out and may require replacing. Consult
your Aqua One retailer.
4. The Flapper valves in the pump may have become
dirty or brittle and require replacing. Consult your Aqua
One retailer.
5. Turn the pump up (all models except AP-150R).
THE PUMP IS VERY NOISY
1. Check that the Air Line is not kinked
2. Check the Air Stone and replace if needed.
3. There is a rubber diaphragm inside the pump which
may have warn out and may require replacing.
4. There may be to much back pressure on the pump.
(It is to small for your application)
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