Decommissioning And Recycling - Wilo SCPV Installation And Operating Instructions Manual

Causes
27 Rotating part rubbing on stationary part.
28 Bearing worn.
29 Wearing rings worn.
30 Impeller damaged.
31 Casing gasket defective, permitting internal
leakage.
32 Shaft or shaft sleeves worn or scored at packing. Replace.
33 Packing improperly installed.
34 Type of packing incorrect for operating condi-
tion.
35 Shaft running' out of center because of worn
bearings or misalignment.
36 Rotor out of balance, causing vibration.
37 Gland too tight, resulting in no flow of liquid to
lubricate packing.
38 Cooling liquid not being provided to water-
cooled stuffing boxes.
39 Excessive clearance at bottom of stuffing box
between shaft and casing, causing packing to
be forced into the pump.
40 Dirt or grit in sealing, liquid leading to scoring of
shaft or shaft sleeve.
41 Excessive thrust caused by mechanical failure
inside pump or by failure of hydraulic balancing
device, if any (in case of multistage pump etc.)
42 Excessive grease or oil in antifriction bearing
housing or lack of cooling, causing excessive
bearing temperature.
43 Lack of lubrication.
44 Improper installation of antifriction bearings
(Damage, incorrect assembly of stacked bea-
rings, use of unmatched bearings as a pair et c.)
45 Dirt in bearings
46 Rusting of bearings from water in housing
47 Excessive cooling of water- cooled bearing,
resulting in condensation of atmospheric
moisture in bearing housing.

11 Decommissioning and Recycling

The disposal of all material or debris must be done
in order to protect the environment.
The Wilo pumps do not contain any dangerous
substances. The major part of the pump is
recyclable. The disposal and recycling of the pump
sets must be done in accordance with the local in
force regulations.
The dismounting must be done by qualified per-
sonal.
Clean and decontamination must be achieved
before any transportation or recycling
Installation and operating instructions Wilo – SCPV pumps
Remedies
Incorrect assembly, correct the assembly.
Check lubrication, shaft run out, alignment, replace if required
Replace.
Replace.
Replace.
Use correct grade and size of packing
Use correct grade and size of packing.
Rectify.
Balance the rotor.
Adjust gland. Ensure sealing water flow
Provide.
Check pumps assembly.
Provide clean liquid for flushing.
Check pump operation and assembly
Attend.
Provide proper lubrication.
Rectify or replace bearing.
Investigate the cause and clean bearing.
Arrest water ingress.
Reduce cooling water flow.
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