KSB MK, Installation & Operating Manual

Page: 31 / 64

6 Commissioning/Start-up/Shutdown
31 of 64
MK
6.2.3.3 Temperature of the fluid handled
CAUTION
Incorrect temperature of the fluid handled
Damage to the pump (set)!
▷ Do not operate the pump (set) outside the specified temperature limits.
Table 9: Fluid temperature
Design Temperature [°C]
Minimum Maximum
MK, MKA -10 °C 90 °C
7)
MKY -10 °C 200 °C
8)
6.2.3.4 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.
6.2.3.5 Gas content of fluid handled
DANGER
Excessive temperatures as a result of bearing bushes running hot
Explosion hazard!
Fire hazard!
Damage to the pump set!
▷ Never pump fluids with excessive gas content.
▷ Allow sufficient time for gases to leave the fluid handled.
6.2.3.6 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 shaft seal are to be expected. In this case, reduce the commonly
recommended inspection intervals.
6.3 Shutdown/storage/preservation
6.3.1 Measures to be taken for shutdown
The pump (set) remains installed
ü Sufficient fluid is supplied for the functional check run of the pump.
1. For prolonged shutdown periods, start up the pump (set) regularly between
once a month and once every three months for approximately five minutes.
ð
This will prevent the formation of deposits within the pump and the pump
intake area.
7) 80 °C for bearing material 1.4571-NBR
8) 200 °C for bearing material EK 3205; 110 °C when handling water; 80 °C for bearing material 1.4571-NBR