Electrical Installation; Startup; Alarms; Anti-Cycling - Grundfos CMB Booster PM1 Supplement To Quick Manual

4. Electrical installation

Warning
The electrical installation should be
carried out by an authorised person in
accordance with local regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Warning
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.
We recommend to fit the permanent
installation with an earth leakage
circuit breaker (ELCB) with a tripping
current < 30 mA.
6

5. Startup

Do not start the pump until it has been
Caution
filled with liquid.

6. Alarms

If a dry-running alarm has been
activated, find the cause before the
Caution
pump is restarted in order to prevent
damage to the pump.

6.1 Anti-cycling

In case of a very small consumption,
the anti-cycling function may detect
Note
this as cycling and stop the pump
inadvertently. If this occurs, the
function can be disabled.
Enabling and disabling the function
1. Press [Reset] for 3 seconds until "Power on"
starts flashing.
2. Select whether the function should be enabled or
disabled. Each time [Reset] is pressed, the unit
will change between enabled and disabled.
"Pump on" is off when the function is disabled.
"Pump on" is on when the function is enabled.
3. Press [Reset] for 3 seconds to return to
operation.