Back Pressure; Replacing The Diaphragm - AllPondSolutions AP-1.5-KIT Quick Start Manual

Regularly clean your air hose and air stone to ensure maximum output and improved lifespan
of the air pump. The air hose should be inspected at the same time that regular aquarium
maintenance is carried out. Carefully remove any sections that are kinked or pinched and
replace if necessary. Restricting the air flow can result in back pressure.
Ensure the air stones are kept clean from debris or algae build-ups. Blocked air stones will
lead to low air pressure output.
Lubrication is not required on the air pump or any of its parts. Remove dust and grime from
the outer shell with a soft, damp cloth.

Back Pressure

IMPORTANT! Back pressure is the build-up of pressure on the diaphragm due to restricted air
flow. This occurs when excess air is produced by the air pump, or when the air channels (for
example air hose or air driven aquarium ornaments) are inadvertently blocked. Back pressure
over time will cause the diaphragm to expand or rupture.

Replacing the Diaphragm

This air pump is supplied with an extra diaphragm set. In the event of the pump operating
less efficiently, immediately replace the diaphragms and check the inside of the pump for
signs of dirt, moisture and excessive wear. You replace the diaphragm(s) by unscrewing the
screws to open up the air pump, remove the old diaphragm(s) from the valve housing and
then fit the new diaphragms. Make sure the air pump is correctly put back together and
securely fastened with the screws.
Diaphragm wear is normal and is not covered by the warranty; extra diaphragms may be
purchased from All Pond Solutions online store.
1. Replace the diaphragm(s) by unscrewing the screws to open up the air pump.