Goulds Pumps ICP - IOM - Manual (Page 27)

Installation, Operating and Maintenance Instruction Model ICP
ICP 100-English page 18 Revision 00
Article No 24264412 Issue 05/2006
pic 13
ƒ Loosen hexagen head bolt (901.41). Remove the
bearing bracket lantern from bearing bracket
(330).
ƒ Dismount circlip (932.51). Therefore you need a
snap ring plier acc. to DIN 5256-C.
Bearing
bracket
required snap ring
plier
length i (min.) of
snap ring plier
24 size 94/C 40 200mm
32, 42 size 94/C 85 250mm
48 Größe 94/C 85 300mm
ƒ Remove shaft (210) including anti-friction bearing
(320.51 and 320.52) and bearing nut (923.51)
from the bearing bracket (330).
ƒ Remove the bearing nut (923.51). The bearing nut
is right hand threaded and self locking. It can be
reused 5 times if it is handled appropriately.
ƒ Remove the anti-friction bearing (320.51 and
320.52) from the shaft (210) using a hydraulic
press or a bearing puller.
8.7 Reconditioning
After disassembly all parts must be cleaned and
checked for wear carefully. Worn or damaged parts
must be replaced by new parts (spare parts).
When reassembling the pump it is recommended to
replace all seals.
All PTFE-sealing elements and graphite seal-
ings are intended for being used only once.
In most cases it make sense, if damaged absolutely
necessary, to renew the mechanical seal and the
bearings.
Deposits on the impeller (230), in the volute casing
(102V) or on the casing cover must be removed.
8.7.1 Clearance at impeller
Suction side of impeller Back vanes of impeller
Drive side of impeller
Only for pump sizes
100-65-315
125-80-315
125-80-400
125-100-315
125-100-400
150-125-315
150-125-400
200-150-315
200-150-400
Nominal diameter D (mm)
60
68
85
100
120
135
155
175
220
min. 0,15 0,17 0,20 0,22 0,25
new
max. 0,19 0,22 0,24 0,27 0,30
Radial
clearance s
(mm)
wear limits 0,78 0,85 0,90 1,05 1,15
new 0,8 - 1,2 Axial
clearance a
(mm)
wear limits max. 1,7
When the wear limits has been reached or ex-
ceeded, the worn parts must be replaced.
For volute casings (102V) with a wear ring (502.11)
and cover casings (161) with a wear ring (502.31)
there are the following possibilities to restore the cor-
rect clearance:
a) Renew impeller (230) and wear ring. Then the
original measures are restored.
b) A customized wear ring (bored to fit) can be sup-
plied to avoid replacement of the impeller. Please
contact factory for details.
When volute casing (102V) or casing cover (161)
without wear ring must be repaired, a wear ring can
be installed to renew pump performance. Remachin-
ing of the volute casing and /or casing cover is re-
quired. Please contact the factory for details and as-
sistance.
8.8 Mounting
Re-assemble the pumps using the reverse order of
steps as completed for pump disassembly. However
the following observations should be considered:
ƒ Pay attention to the utmost cleanliness when re-
assembling the pump.
ƒ For tight tolerances, e.g. between shaft sleeve
(433) and shaft (210) or impeller (230) and shaft
(210), as well as thread, use a suitable anti-galling
compound (e.g. Molykote/Never-Seeze), so that
the assembly and the next disassembly will be
easier.
Anti-galling compound must be compatible with
the pumpage.