Related information
4. Installing the product
8. Control panels
9. Multimaster function
7.3 Hydro Multi-E in system without inlet pressure
Make sure that the power is switched off on the main
switch and the circuit breakers.
Do not start the pumps until they have been filled with
liquid.
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.
When you have carried out the mechanical and electrical
installation described in section Installation, proceed as follows:
1. Check that Hydro Multi-E corresponds to the order and that no
single parts have been damaged.
2. Check that the precharge pressure in the diaphragm tank is 0.7
times the required outlet pressure (setpoint).
Measure the precharge pressure while the system is
pressureless.
3. Connect water and power supplies to the system.
4. Open all pump inlet valves.
5. Close all pump outlet valves, and prime all pumps and the inlet
pipe.
TM080436
Position of vent screw and filling screw
Pos. Description
1 Vent screw
2 Filling screw
6. Switch on the power supply with the main switch.
7. Start pump 1 by pressing the start/stop button on the pump
control panel.
8. Vent pump 1 using the vent screw.
9. Slowly open the outlet valve approximately 50 %.
10. Repeat steps 7 to 9 for the other pumps in the system.
11. Slowly fully open all pump outlet valves.
12. Wait for a few minutes.
13. Set the desired outlet pressure.
If you change the outlet pressure, change the
diaphragm tank precharge pressure accordingly.
14. 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.
The standard settings can be changed using Grundfos Go, see
sections Multimaster function or Control panels.
Related information
4. Installing the product
8. Control panels
9. Multimaster function
8. Control panels
You can configure pump settings using the following control panels:
• Standard control panel. See section Standard control panel on
the pump.
• Advanced control panel. See section Advanced control panel on
the pump.
• Grundfos GO. See section Multimaster function.
If the power supply is switched off, the settings will be stored.
Related information
8.1 Standard control panel on the pump
8.2 Advanced control panel on the pump
9. Multimaster function
17
English (GB)
To Next Page
Loading...
Need help?
General
