Q: Where are the water filling and drainage openings on the pump?

On the HWW 1300/25 Plus pump, the two main openings are: Filling opening (9) : located on the pump housing (8). This is where you need to pour water to completely fill the pump before the first start-up. Once the water is poured in, seal this opening tightly. Drainage opening (10) : this is the place to empty the pump if needed (maintenance or end of season). Air bleeding of the circuit : The pump does not have a specific bleed valve. To bleed air after filling, simply open a downstream faucet (at the outlet of your hose) during the initial start-up. Air will escape automatically. Before winter storage, completely empty the pump and store it in a dry place protected from frost.

Question 1

How to increase the flow rate of the HWW 4500 INOX pump?

Accepted Answer

Theoretical maximum flow rate of the T.I.P. HWW 4500 INOX pump is 4,350 l/h. Here’s how to optimize your installation for the best performance:

Optimize the installation

Reduce the suction height: Do not exceed 9 m (maximum guaranteed suction height). Each additional meter significantly reduces the flow rate.
Reduce the lift height: The flow rate decreases with the discharge height. The closer it is to the ground, the higher the flow rate.
Increase the diameter of the pipes: Use pipes of 1" (the pump fittings are female threaded 1") or larger. Smaller diameters create excessive friction and reduce the flow rate.
Eliminate bends and obstacles: Remove unnecessary bends, traps, and back slopes that slow down the flow.
Clean the suction filter: A clogged filter limits the flow rate. Check it regularly.

Pressure switch settings

The pressure switch is factory preset to 1.6 bar (on) and 3 bar (off). Any modification should be entrusted to qualified personnel and may affect performance. Contact a specialized electrician if you plan to make an adjustment.

The maximum pressure of the pump is 5.0 bar.

Question 2

What are the steps to follow after connecting the inlet and outlet pipes?

Accepted Answer

After connecting the inlet (1) and outlet (5) pipes to your T.I.P. HWW 1300/25 Plus pump, here are the essential steps to follow:

Pump Priming

Completely fill the pump housing (8) with water through the filling opening (9)
Tightly close the filling opening (9)
Open a downstream faucet (on the outlet line) to let air escape from the circuit

Checks Before Starting

All connections are tightened with PTFE tape
The suction hose (if used) remains submerged at least 30 cm deep
Check the pressure switch: normally set to 1.6 bar for starting and 3 bar for stopping (factory setting)
Confirm a 230V outlet with 30 mA differential protection

Starting and Priming

Plug the pump into the electricity - it starts immediately
The priming takes a few minutes. Water should flow steadily without air bubbles
If water does not come out, refill the pump housing
Once the water is stable, close the downstream faucet - the pump will automatically stop at 3 bars

Your pump is now ready for use!

Question 3

Where are the water filling and drainage openings on the pump?

Accepted Answer

On the HWW 1300/25 Plus pump, the two main openings are:

Filling opening (9): located on the pump housing (8). This is where you need to pour water to completely fill the pump before the first start-up. Once the water is poured in, seal this opening tightly.
Drainage opening (10): this is the place to empty the pump if needed (maintenance or end of season).

Air bleeding of the circuit:

The pump does not have a specific bleed valve. To bleed air after filling, simply open a downstream faucet (at the outlet of your hose) during the initial start-up. Air will escape automatically.

Before winter storage, completely empty the pump and store it in a dry place protected from frost.

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