English (GB)
9
Fig. 9
Position of vent screws in systems with CR(I)E pumps
8. Switch on the power supply with the main switch.
9. Start pump 1 by pressing the start/stop button on the pump
control panel.
10. Vent pump 1 by means of the vent screw.
11. Repeat steps 9 and 10 for the other pumps in the system.
12. Set the desired outlet pressure.
13. Check that the pumps are cutting in and out, thus adjusting
the performance to the demand.
Hydro Multi-E is now in automatic mode and ready for operation.
9.2 Hydro Multi-E in system without inlet pressure
When you have carried out the mechanical and electrical
installation described in section
, proceed as
follows:
1. Check that Hydro Multi-E corresponds to order and that no
single parts have been damaged.
2. Switch off the power supply with the main switch.
3. Switch off the circuit breakers of all pumps.
4. Check that the precharge pressure in the diaphragm tank is
0.7 times the required outlet pressure (setpoint).
5. Connect water and power supplies to the system.
6. Open all pump inlet valves.
7. Close all pump outlet valves, and prime all pumps and the
inlet pipe.
Fig. 10
Position of vent screw and filling screw
8. Switch on the power supply with the main switch.
9. Start pump 1 by pressing the start/stop button on the pump
control panel.
10. Vent pump 1 by means of the vent screw.
11. Slowly open the outlet valve approximately 50 %.
12. Repeat steps 9 and 11 for the other pumps in the system.
13. Slowly fully open all pump outlet valves.
14. Wait for a few minutes.
15. Set the desired outlet pressure.
16. Check that the pumps are cutting in and out, thus adjusting
the performance to the demand.
Hydro Multi-E is now in automatic mode and ready for operation.
T
M
05
20
0
9
17
1
7
If you change the outlet pressure, change the
diaphragm tank precharge pressure accordingly.
Hydro Multi-E systems with CME pumps require a
positive inlet pressure during startup and operation.
The following startup procedure therefore only
applies to Hydro Multi-E systems with CRE or CRIE
pumps.
Measure the precharge pressure while the system is
pressureless.
Vent screws
T
M
05
20
0
9
17
1
7
If you change the outlet pressure, change the
diaphragm tank precharge pressure accordingly.
Vent screw
Filling screw
