Wilo Isar BOOST5, Installation And Operating Instructions Manual

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18 Installation and operating instructions • Wilo-Isar BOOST5 • Ed.03/12/2022
Working pressure (bar) Inflation pressure (bar)
3 1.5
3.5 2
4 2.5
4.5 3
5 3.5
5.5 4
Inflation (Fig. 7)
• Remove the screw,
• get a compressor,
• connect the compressor pipe to the filling valve,
• inflate the expansion tank to the desired pressure.
7.6 Self-priming operation
CAUTION
Risk of material damage
The pump is set to self-priming operation in the factory. If proper load operation is guaran-
teed or the supply is already pressurised, you can turn off the automatic priming function
by turning the lever (Fig. 5) to the vertical position.
• Unscrew and remove the drainage screw. Risk of water leakage.
• Move the red lever into the vertical position to turn off the automatic self-priming oper-
ation.
• Screw the drainage screw back on and refill the Wilo-Isar BOOST5 with water as de-
scribed in the chapter “Filling and Starting”.
8 Commissioning
8.1 Filling and starting Filling and starting
WARNING
Qualified personnel only.
CAUTION
Risk of damaging the pump
Never run the Wilo-Isar BOOST5 dry in order to prevent damage to the
mechanical seal.
Load operation (Fig. 4a)
• Open all the valves to fill the pump with water.
• Connect the plug to the mains
• Set the change-over switch to the vertical position
• Press the button to start the Wilo-Isar BOOST5
Suction operation (Fig. 4b)
• Unscrew and remove the filler screw and snifter valve screw.
• Pour around 1.5 litres of water until it comes out of the aeration hole (Fig. 6).
• Screw the filler screw and snifter screw back on.
• Open the water valve.
• Connect the plug to the mains
• Set the change-over switch to the vertical position
• Press and hold the buttons at the same time for 5 seconds.
Wilo-Isar BOOST5 enters priming mode.
• Press the On/Off switch on the control panel to start priming.