Shaft Seal Run-In; Handling And Storing The Product; Handling The Product; Storing The Product - Grundfos SCALA2 Installation And Operating Instructions Manual

7.3.2 Boosting from the mains
The pressure settings 4, 4.5, 5.0 and 5.5 bar (58, 65,
73 and 80 psi) require a positive inlet pressure, and
these settings must only be used when boosting from
the water mains.
Boosting from the mains
7.3.3 Self-learning setpoint
If the pump cannot reach the user-defined pressure
setpoint, the self-learning function will automatically
lower the setpoint.
Related information
10.3.2 Self-learning function

7.4 Shaft seal run-in

The shaft seal faces are lubricated by the pumped
liquid. A slight leakage from the shaft seal of up to 10
ml per day or 8 to 10 drops per hour may occur.
When the pump is started up for the first time, or
when the shaft seal has been replaced, 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, that is, 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.
If the unlikely event of an internal leakage occurs, the
liquid will be drained through the bottom of the pump.
Install the pump in such a way that no undesirable
collateral damage can arise.
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8. Handling and storing the product

8.1 Handling the product

Take care not to drop the pump as it may
break.

8.2 Storing the product

If the pump is to be stored for a period of time, for
example during the winter, drain it and store it indoors
in a dry location.
Temperature range during storing must be -40 to +70
°C (-40 to +158 °F).
Maximum relative humidity during
storing
Related information
12. Starting up the product after standstill
95 % RH