CAUTION
Time for warming up the pump too short
Damage to the pump!
▷ Check that the pump is sufficiently warmed up throughout.
The casing cover can be heated with hot water or steam. Observe the following data
for the heating medium:
▪ Maximum permissible temperature t = 150 °C
▪ Maximum permissible pressure p = 10 bar
▪ Seal casing cover with O-rings made of EP.
CAUTION
Lack of heating medium
Damage to the pump!
▷ Provide sufficient quantities of a suitable heating medium.
6.1.10 Heating up/keeping warm the pump (set)
CAUTION
Pump blockage
Damage to the pump!
▷ Prior to pump start-up, heat up the pump as described in the manual.
Observe the following when heating up the pump (set) and keeping it warm:
▪ Make sure that the temperature is increased continuously.
▪ Max. heating speed: 10 °C/min (10 K/min)
When the pump is used for handling fluids at temperatures above 150 °C make sure
that the pump has been heated throughout before starting it up.
The temperature difference between the pump's surface and the fluid handled must
not exceed 100 °C (100 K) when the pump is started up.
6.1.11 Start-up
DANGER
Non-compliance with the permissible pressure and temperature limits if the pump is
operated with the suction and/or discharge line closed.
Explosion hazard!
Leakage of hot or toxic fluids!
▷ Never operate the pump with the shut-off elements in the suction line and/or
discharge line closed.
▷ Only start up the pump set with the discharge-side shut-off element slightly or
fully open.
DANGER
Excessive temperatures due to dry running or excessive gas content in the fluid
handled
Explosion hazard!
Damage to the pump set!
▷ Never operate the pump set without liquid fill.
▷ Prime the pump as specified. (⇨ Section 6.1.4 Page 31)
▷ Always operate the pump within the permissible operating range.
Fluid temperatures above
150 °C
Temperature difference
6 Commissioning/Start-up/Shutdown
34 of 76
RPH
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