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L100235 - Autojet & Multimax Owner’s manual | Copyright© Pentair Australia Pty Ltd 2017
To maintain optimum performance from your pump, the suction pipe should be:
-
Kept to the shortest distance practical, but not shorter than
the recommended length.
-
Re-enforced crush resistant (non-collapsable) hose or pipe.
-
All fittings should be air tight.
-
Pipes should be equal to or larger than the diameter of the
suction/inlet
port.
-
Ensure that the suction is completely submerged.
In-line strainers/filters are recommended and regular maintenance is required
to keep them clean and provide maximum pump pressure.
7. Discharge
The length and diameter of the discharge hoses/pipes will affect the pressure
and flow rate at which your pump operates. Pressure ratings of all components
must exceed the maximum pressure of the pump by an appropriate safety factor.
All pipework should be supported independently of the pump.
8. Pump Priming
Ensure that there is at least 200mm of water in your tank, (i.e. that the tank outlet
is covered, and the pump will not draw any air into the system). Open the gate
valve on the tank. Check for any leaks, and repair these if necessary.
If no leaks are present, remove the priming plug (fig.1) to open the priming port
on the top of the pump case.
If the tank is above the level of the pump, water will start to run out of this port.
Replace the priming plug (fig.1) carefully. Your pump is now ready to run.
(
Note:
If a check valve is installed in the suction line, water may not fill the pump.
If this occurs, follow the instructions below).
If the tank water level is below the level of the pump, you will need to fill the pump
body and suction line. Remove the priming plug (fig.1) and fill the pump body
and suction line using a funnel. It may take several attempts to prime the pump.
Failure to correctly prime the pump may result in damage to the mechanical seal and
cause the pump to leak water. This damage is not covered by warranty so care must
be taken to properly fill the pump with water prior to first operation.
