Munsch NPC Series - Shut-down procedures; Start-up after shutdown period

Operation
6.3 Shut-down
WARNING
Risk of injury and poisoning due to hazar dous pumped
media!
Safely collect any emerging pumped med ium and dispose
of it in accordance with environmental rules and require-
ments.
Carry out the following measures when the pump is shut
down:
Pump is Action
shut down for
a prolonged
period
Carry out measures depe nding
on the pumped medium
(→ Table 9 Measures
depending on pumped medium
behavior, Page 23).
emptied
Close suction-side and
pressure-side armatures.
disassembled
Isolate the motor from its power
supply and secure against
unauthorized switch-on.
put into storage Follow storage instructions
(→ 4.3 Storage, Page 14).
Tab. 8 Action t o be taken for pump shutdowns
Duration of shutdown (depending
on process)
Behavior
of pumped
medium
short long
solids sediment Flush the
pump.
Flush the
pump.
solidifies/
freezes,
non-corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
solidifies/
freezes,
corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
Preserve the
pump and
containers.
remains liquid,
non-corrosive
––
remains liquid,
corrosive
–
Empty the
pump and
containers.
Preserve the
pump and
containers.
Tab. 9 Measures dep ending on pumped
medium behavior
6.4 Start-up following a shutdown period
1. For shutdowns > 1 year, take the following actions before
restarting the pump:
Shutdown period
Action
>1year For oil-lubricated bearings:
carry out oil change.
For variants with roller
bearings without lifetime
lubrication: relubricate.
>2years Replace elastomer seals
(O-rings, shaft sealing rings).
Replace roller bearings.
Tab. 10 Actions to be taken after prolonged
shutdown periods
2. Carry out all steps as for the initial start-up (→ 6.2 Start up,
Page 22).
6.5 Running the stand-by pump
✔ Thestand-bypumpisfilledandbled
Run the stand-by pump at least once a week.
1. Completely open the suction-side armature.
2. Open the pressure-si de a rm ature to an extent that the
stand-by pump reaches its operating temperature and is
heated through evenly (→ 6.2.1 Switching on, Page 22).
EN – 02 BA-2005.07 NPC series 23