Startup; Shaft Seal Run-In; Alarms; Dry Running - Grundfos JP Booster PM 2 Gebrauchs- Und Sicherheitsanweisung

6. Startup

Do not start the pump until it has been
Caution
filled with liquid. See the quick guide.
We recommend to fit a non-return valve on
Note
the suction side of the pump.

6.1 Shaft seal run-in

The seal faces are lubricated by the pumped liquid,
meaning that there may be a certain amount of
leakage from the shaft seal.
When the pump is started up for the first time, or
when a new shaft seal is installed, a certain run-in
period is required before the leakage is reduced to
an acceptable level. The time required for this
depends on the operating conditions, i.e. every time
the operating conditions change, a new run-in period
will be started.
Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.

7. Alarms

7.1 Dry running

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

7.2 Anti-cycling

In case of a very small consumption, the
anti-cycling function may detect this as
Note
cycling and stop the pump inadvertently. If
this occurs, the function can be disabled.
Disabling the function
To disable the function, set DIP switch 7 to "OFF".
See the quick guide.

7.3 Auto reset

Set auto reset to "on" only if there is
Caution
positive inlet pressure.
6