Operation
6. Make sure temperature change is smaller than 5 K/min for
pumps with hot fluids.
7. After the initial stress due to the pressure and operating
temperature, check that the pump is not leaking.
6.2.2
Switching off
Pressure-side fitting closed (recommended)
WARNING
Risk of injury due to hot pump parts!
Use personal protective equipment when carrying out any
work on the pump.
1. Switch off motor.
2. Check all connecting bolts and tighten them if necessary
(only after initial commissioning).
6.3
Shutting down the pump
DANGER
Risk of injury due to running pump!
Do not touch the pump when it is running.
Do not carry out any work on the pump when it is running.
Before all installation and maintenance work, disconnect
the motor from the mains and secure it against being
switched back on again.
DANGER
Risk of electrocution!
All electrical work must be carried out only by qualified elec-
tricians.
Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Use protective equipment for any work on the pump.
Collect leaking liquid safely and damage fitting in accor-
dance with local regulations.
Take the following measures whenever the pump is shut
down:
Pump is
Action
shut down
Take measures appropriate for
the fluid
depending on the behavior of
the pumped liquid, 19 Page).
…emptied
Close suction and pressure-side
fitting.
…dismounted
Isolate the motor from its power
supply and secure it against
unauthorized switch-on.
…put into
storage
Note measures for storage.
Tab. 3
Measures to be taken if the pump is shut down
Duration of shutdown (depending
on process)
Behavior of the
pumped liquid
Short
Long
Crystallized or
polymerized,
solids
sedimenting
Flush the
pump.
Flush the
pump.
Solidifying/
freezing,
non-corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
Solidifying/
freezing,
corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
Remains liquid,
non-corrosive
–
–
Remains liquid,
corrosive
–
Empty the
pump and
containers.
Tab. 4
Measures depending on the behavior
of the pumped liquid
300 092
BA-2018.08.21 EN
SHM
19
