KSB Sewabloc Series, Installation & Operating Manual

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6 Commissioning/Start-up/Shutdown
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Sewabloc
6.2.2 Frequency of starts
To prevent high temperature increases in the motor and excessive loads on the
pump, motor, seals and bearings, the frequency of starts shall not exceed the
following number of start-ups per hour.
Table 14: Frequency of starts
Rated motor power Maximum frequency of starts
[kW] [Start-ups/hour]
≤ 11 25
12 - 37 20
6.2.3 Fluid handled
6.2.3.1 Temperature of the fluid handled
CAUTION
Impermissibly high temperature of fluid handled
Damage to the pump!
▷ Prolonged operation against a closed shut-off element is not permitted
(heating up of the fluid).
▷ Observe the temperature limits in the data sheet and in the section on
operating limits. (
ð Section 6.2, Page 28)
6.2.3.2 Density of the fluid handled
The pump input power changes in proportion to the density of the fluid handled.
CAUTION
Impermissibly high density of the fluid handled
Motor overload!
▷ Observe the information about fluid density in the data sheet.
▷ Make sure the motor has sufficient power reserves.
6.2.3.3 Abrasive fluids
Do not exceed the maximum permissible solids content specified in the data sheet.
When the pump handles fluids containing abrasive substances, increased wear of the
hydraulic system and the shaft seal are to be expected. In this case, halve the intervals
commonly recommended for servicing and maintenance.
6.3 Shutdown/storage/preservation
Storing a new pump set
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump (set) storage:
▪ Store the pump (set) in a dry and protected location.
▪ If properly stored indoors, the pump set is protected for a maximum of 12
months.
New pumps are supplied by our factory duly prepared for storage.
▪ Rotate the shaft of the pump by hand once a month.