Operation
6. Observe the following for use in high temperature systems:
– Heat the pumped liquid and running pump slowly to
100–130 °C.
– Vent the pu mp.
7. Heat the pumped l iquid slowly to the operating tempera-
ture.
8. After the initial stress caused by pressure and operating
temperature, check that the pump is not leaking.
6.2.2 Switching off
Pressure-side armature closed (recommended)
WARNING
Risk of injury due to hot pump parts!
Use personal protective equipment when carrying ou t any
work on the pump.
1. Switch off the motor.
2. Check all connecting bolts and tighten them if necessary.
6.3 Shutting down
WARNING
Risk of injury and poisoning due to hazardous pumped
media!
Safely collect any leaking pumpe d medium and dispos e
of it in accordance with environmental rules and require-
ments.
Take the follo wing meas ures whenever the p ump is s hut
down:
Pump is Measure
...shut down
for a prolonged
period
Take measures accord-
ing to the pumped liq-
uid (→ Table 9 Measures
depending on the behavior of
the pumped medium, Page 21).
...emptied
Close the suction-side and
pressure-side armatures.
...dismounted
Isolate the motor from its po we r
supply and secure it aga inst
unauthorized switch-on.
...put into
storage
Follow the storage instructions
(→ 4.3 Storage, Page 12).
Tab. 8 Measures to be taken if the pump is shut down
Duration of shutdown (depending
on process)
Behavior
of pumped
medium
Short
Long
Solids sedim ent
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.
Treat the
pump and
containers
with preser-
vative.
Remains liquid,
non-corrosive
––
Remains liquid,
corrosive
–
Empty the
pump and
containers.
Treat the
pump and
containers
with preser-
vative.
Tab. 9 Measures depending on the behavior
of the pumped medium
160-282/0 – 550 154 BA-2017.03 en-US NIT series 21
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