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5. OPERATION & MAINTENANCE
WARNING
Do not run the pump without water, else may damage
the mechanical seal and bearing.
1. The pump must be filled with water before starting. To do this,
Ÿ
Close the pump outlet valve, open the vent screw on the pump head,
slowly open the inlet valve, until the water flows out of the vent plug screw.
Ÿ
Tighten the plug screw.
2. Check the rotation direction as follows
Switch off the power supply and observe the direction of rotation (Reference
fan). The correct rotation from the motor side should be counterclockwise
rotation.
3. Before starting the pump, check the following
Ÿ
Pump is fixed firmly.
Ÿ
Pump is filled with water.
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Grid voltage matches motor nameplate.
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Motor rotation direction is correct.
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All the pipes are tightly connected.
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The inlet of the valve is fully open.
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Outlet valve should be opened slowly once the pump is started.
Ÿ
If pressure gauge is installed, check the , working pressure of pump.
4. Control the operation of the pump
Ÿ
Limit pump starts to no more than 100 times per hour;
Ÿ
Note that when the flow is too small the pump will over-heat and if flow is
larger, it will cause motor to overload.
Ÿ
During operation if the pump is noisy, stop and check it immediately.
5. For good maintenance, the pump should be regularly checked for the
following
Ÿ
Work pressure and operation pressure;
Ÿ
Possible leakage;
Ÿ
Motor overheating;
Ÿ
Condition of inlet filter (if fitted);
Ÿ
The disconnection time of Motor overload;
WARNING
Match pump selection to the duty required
