3
5. Installation
•
The pump may only be operated in the dry, it is not designed for submersed use. It should
be securely mounted using the keyhole slots provided in a dry place.
•
The pump is self priming and should be mounted above the water level of the liquid
storage tank (see fig 1).
•
The outlet should always be positioned above the aquarium or sump. If the pump stops
with the drive axle in the horizontal position then the pump will not act as a non return
valve. The air gap between the outlet hose and water prevents aquarium water being
syphoned back into the liquid storage tank (see fig 2).
•
If small amounts of water need to be precisely dosed then a non return valve should be
placed in the inlet
hose of the pump. This prevents the pressure tube emptying and ensures
that the same volume is dosed during each operating cycle (see fig 1).
fig 1: Installation method for dosing from a dispensing vessel, including a non return
valve.
The non return valve will prevent water flowing back down the pressure hose. In any case
the outlet should always be positioned above the surface level of the receiving vessel. This
prevents the storage tank syphoning out should the pump stop with the drive axle in the
horizontal position..
1.
Receiving vessel (Aquarium,
sump etc)
2. Dosing pump
SP 3000
3.
Dispensing Vessel (Reservoir,
liquid supplement container etc
4.
Non return valve
