Startup; Flushing The Pipe System; Priming The Pump - Grundfos TPE2 D Manual Del Usuario

10. Startup

10.1 Flushing the pipe system

Before starting up the pump for the first time, clean
the pipe system thoroughly by flushing it and filling it
with clean water.
Do not use the pump for flushing the pipe system.
The warranty does not cover any damage caused by
flushing the pipe system by means of the pump.

10.2 Priming the pump

Fill the pump with liquid and vent the pump before
starting the pump. To ensure correct venting, the
vent screw must point upwards.
Closed system or open systems where the liquid level is
above the pump inlet
1. Close the outlet isolating valve and loosen the vent screw in
the motor stool. See fig. 23.
WARNING
Escaping hot or cold liquids
Death or serious personal injury
- Pay attention to the direction of the vent hole, and
make sure that the escaping hot or cold liquid does
not cause injury to persons or damage to the
equipment.
- Wear personal protection equipment.
2. Slowly open the isolating valve in the inlet pipe until a steady
stream of liquid runs out of the vent hole.
3. Tighten the vent screw and completely open the isolating
valve(s).
Open systems where the liquid level is below the pump inlet
Make sure that the inlet pipe and the pump is filled with liquid and
vented before you start the pump.
1. Close the outlet isolating valve and open the isolating valve in
the inlet pipe.
2. Loosen the vent screw. See fig. 23.
3. Remove the plug from one of the pump flanges, depending on
the pump location.
4. Pour liquid through the priming port until the inlet pipe and the
pump are filled with liquid.
5. Replace the plug and tighten securely.
6. Tighten the vent screw.
18
You can fill the inlet pipe with liquid and vent it before you connect
it to the pump. You can also install a priming device before the
pump.
Fig. 23 Position of vent screw