On installation a domestic water pump needs to be manually primed. So, you need to bleed all the air that is inside the pump housing and suction line and displace it with water. Priming the pump also helps to lubricate your mechanical seal. Without priming your pump prior to turning your water pump on will cause irreparable damage to the mechanical seal and is not covered under warranty.

1. Ensure the pump power supply is disconnected.
2. Turn the valve off between your water tank and water pump.
3. Unscrew your pump priming port bolt.
4. Fill the pump body and suction line completely with clean water via priming port. Alternatively, if your water tank is above ground, you can slowly open the valve between your water tank and pump. This will start pushing water through the lines and fill your pump body. When the pump body is full, turn the valve off.
5. Screw your pump priming port and ensure it's tight.
6. Open the valve between your water tank and pump.
7. Check all your inlet fittings and pipework to make sure there are no leaks.
8. Turn your water pump on at the power supply with a tap open.
9. Once the pump is running smoothly with good flow, turn the tap off. The pump should turn off once the line has pressurized.