Electrical Connection; Connecting Units With Cable And Plug Fitted; Connecting Units With No Cable And Plug Fitted; Alternative Power Supply - Grundfos PM 1 Manual Del Usuario

4. Electrical connection

Warning
The electrical connection must be
carried out in accordance with local
regulations and standards.
Before making any connections in the
unit, make sure that the power supply
has been switched off and that it cannot
be accidentally switched on.
The unit must be connected to an
external mains switch with a contact
gap of at least 3 mm in all poles.
As a precaution, the unit must be
connected to a socket with earth
connection.
It is recommended to fit the permanent
installation with an earth leakage circuit
breaker (ELCB) with a tripping current
< 30 mA.
4.1 Connecting units with cable and plug
fitted
Connect the unit using the supplied cable.
4.2 Connecting units with no cable and
plug fitted
1. Remove the control panel of the unit.
2. Carry out the electrical connection as shown in
fig. A or B, page 149, depending on motor type.
3. Fit the control panel securely with all four
mounting screws so that enclosure class IP65 is
maintained.

4.3 Alternative power supply

The PM 1 can be powered by a generator or other
alternative power supplies, provided that the
requirements for the power supply are fulfilled.
See section 11. Technical data.
8

5. Control panel

Fig. 4 Control panel
Pos. Description Function
The green indicator light is
permanently on when the
1 "Power on"
power supply has been
switched on.
The green indicator light is
2 "Pump on" permanently on when the
pump is running.
The red indicator light is
permanently on or flashes
when the pump has stopped
3 "Alarm"
due to an operating fault.
See section 12. Fault finding
chart.
The button is used for
• resetting fault indications
• enabling and disabling of
4 [Reset]

6. Start-up

1. Open a tap in the system.
2. Switch on the power supply.
3. Check that the "Power on", "Pump on" and
"Alarm" indicator lights illuminate briefly.
– The pump is running, and a pressure will be
built up in the system.
4. Close the tap.
5. Check that the pump stops after a few seconds
and that the "Pump on" indicator light goes out.
The system is now ready for operation.
the anti-cycling function.
See section 8.1 Anti-
cycling.