Start-Up - Grundfos Hydro Multi-B Instrucciones De Instalación Y Funcionamiento

9. Start-up

A positive inlet pressure is required before
start-up and during operation.
Caution
Do not start the pumps until they have been fully
primed.
Warning
When pumping hot liquids, ensure that persons
cannot accidentally come into contact with hot
surfaces of the product.
After having carried out the mechanical, electrical and hydraulic
installation described in sections 7.1 Mechanical installation and
7.2 Electrical installation, proceed as follows:
1. Switch off the main switch on the cabinet front.
2. Switch off the circuit breakers (located inside the cabinet) of
all pumps.
3. Set the "Auto-Manual" switch (located on the front of the
control cabinet) for all pumps to "Manual".
4. Close all pump discharge valves, and prime all pumps.
See installation and operating instructions for the pumps.
5. Switch on the main switch.
6. Start pump 1 by switching on the relevant circuit breaker.
7. Check the direction of rotation of the pump. If the pump
rotates in the wrong direction, interchange two phases of the
incoming mains supply.
8. Vent the pump by slowly opening its discharge valve.
9. Set the "Auto-Manual" switch for the relevant pump to "Auto".
10. Repeat points 6, 8 and 9 for the other pumps in the system.
11. Adjust the required setpoint via the CU 323 by pressing
. In the case of tank filling with level switches, adjust the
switches in the tank to the desired start and stop levels.
12. Check that the precharge pressure in the diaphragm tank,
if any, is 0.7 times the required discharge pressure (setpoint).
13. Set the system to "On" by pressing
Hydro Multi-B is now in automatic mode and ready for operation.
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On
Off