Allweiler AEB.E Series - 6.3 Pump Shut-down Procedures; 6.4 Start-up After Shutdown; 6.5 Stand-by Pump Operation

Operation
6.3 Shutting down the pump
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Safely collect any leaking pumped liquid and dispose of it
in accordance with environmental rules and requirements.
Take the following measures whenever the pump is shut
down:
Pump is Measure
…shut down
for a prolonged
period
Perform measures accord-
ing to the pumped liquid
(→ Tab. 7 Measures depending
on the behavior of the pu mped
liquid, Page 24).
…emptied
Close the suction-side and
pressure-side fittings.
…dismounted
Isolate the motor from its power
supply and secure it a gainst
unauthorized switch-on.
…put into
storage
Observe the storage instru c tions
(→ 4.3 Storage, P age 14).
Tab. 6 Measures to be taken if the pump is shu t down
Duration of shu t down (depending
on process)
Behavior o f the
pumped liquid
Short
Long
Solids
sedimenting
Flush the
pump.
Flush the
pump.
Solidifying/
freezing,
non-corrosive
Heat up or
empty the
pump and
containers
1)
.
Empty the
pump and
containers
1)
.
Solidifying/
freezing,
corrosive
Heat up or
empty the
pump and
containers
1)
.
Empty the
pump and
containers
1)
.
Treat the
pump and
containers
with preser-
vative.
Remains liquid,
non-corrosive
––
Remains liquid,
corrosive
–
Empty the
pump and
containers
1)
.
Treat the
pump and
containers
with preser-
vative.
Tab. 7 Measures depending on the behavior
of the pumped liquid
1) See section 6.3 .2. on dra ini ng the pump
6.3.2 Draining the pump
Remove the screw plug (502) from the suction casing
(505).
6.4 Start-up following a shutdown period
1. If the pump is shut down for more than 2 years, take the
following measures before restoring it to service:
– Replace elastomers (stator, round sealing rin gs, shaft
sealing rings).
– Replace antifriction bearings.
– Replace the oil in the spur gear.
– If necessary: Replace the motor bearing (→ operating
instructions of the moto r manufacturer).
2. Carry out th e same steps as for the initial start-up
(→ 6.1 Preparing initial start-up, Page 22).
6.5 Operating the stand-by pump
Stand-by pump filled and bled
Operate the stand-by pump a t least once a week.
24 AE BA-2020.05 en-US 260371 – 176-982/0