Seepex BN 5-12 Series, Operation & Maintenance Manual

Page: 12 / 309

Commissioning/
De-commissioning
Ausgabe
issue
C / 02.01.2006
Dokument
document
OM.COM.01e
Blatt
sheet
3 (3)
6.5.5
Establish Clear Passage Through Pipelines
CAUTION
To prevent damage to the pump the unhindered flow
of liquid must be guaranteed between the points of
entry to and exit from the pipeline. For this reason,
open all relevant valves etc. prior to activation of the
pump.
6.6
De-commissioning
6.6.1
De-activation
The electric connections must be
switched off and protected against
accidental re-activation. Observe the
safety regulations applying to the plants.
6.6.2
Stationary Pump
The pump and all optional equipment must be
provided with the following protection modes while at
a standstill:
- Frost protection
- Protection against solid particle deposits
- Protection against sedimentation of the medium
- Corrosion protection for parts in contact with
the medium
We recommend that the pipeline and pump be
emptied for the duration of the plant standstill.
Following evacuation, the pump should be preserved.
6.6.3
Evacuation of the Pump
The pipeline must be evacuated on the
suction and pressure side or shut-off
directly behind the pump connections.
Drain any residual liquid in the pump
casing by opening/ removing the
screwed sealing plugs (705) and (502),
sealing rings (706) and (503). Casings
without screwed plug must be
evacuated by the connection branch
(SAG and DRS). Refer to the data
sheet and the sectional drawing of the
associated operating instruction, Point
9, for information on the pump design.
Conveying medium residues always
remain in the rotor/ stator chambers
and may run out during transport or
disassembly of the pump. If conveying
aggressive or hazardous media,
therefore, wear appropriate protective
gear during all installation work.
6.6.4
Disassembling the Pump
Dismantle the pipe work by removing the flange bolts
(SCH) and flange seals (DFL) or the threaded
connections (G).
Disassemble the pump together with the baseplate
(GPU) or, as applicable, without the baseplate (GPU)
following removal of the bolts (SCH) at the pump
feet.
Block-design pumps with direct flange-
mounted drive engine are liable to
become unstable during disassembly.
Stability can be restored by propping up
the drive engine.
6.6.5
Preservation/Storage
The pump must be preserved prior to storage.
Appropriate preservation measures must be agreed
with
seepex . Always state the pump commission
number when making inquiries.
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