Operation
6.2.2
Switching off
Pressure-side
¿
tting 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 quali
¿
ed 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
¿
tting 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
À
uid
(
ĺ
Table 4 Measures
depending on the behavior of
the pumped liquid, Page 17).
…emptied
Close suction and pressure-side
¿
tting.
…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
301 356
BA-2018.01.25 EN
ETLB-S, ETLB-ST
17
