Page 18 / 88
N, N4 Rev. 13 - Operating Instructions
GB
temperature), re-lubrication (add grease) should be
performed by means of the lubricating nipples at
least once every six months for operation at 2,900-
3,600 r.p.m. and at least once a year for operation at
1,450-1,800 r.p.m.
Perform lubrication while motor is running.
The table on page 86 indicates the types of bearings
of the different pumps and the quality of grease for
re-lubrication in grams (g).
8.5. Dismantling the system
Close the suction and delivery gate valves and drain
the pump casing before dismantling the pump.
8.6. Dismantling the pump
Close the suction and delivery gate valves and drain the
pump casing before dismantling the pump.
For dismantling and reassembly see construction in the
cross section drawing.
The motor and all internal parts can be dismantled
without removing the pump casing and pipes.
Disassembly sequence with normal coupling wi-
thout spacer
(fig. 10)
:
1) coupling guard;
2) motor;
3) support foot (if fitted);
4) on removing the nuts (14.28) the bearing hou-
sing and shaft unit, with impeller and casing cover,
is completely removed.
For disassembly and reassembly, see construction
in the cross section drawing
(paragraph 13.2
Annexes)
.
9. DISPOSAL
The final disposal of the device must be done by spe-
cialized company.
Make sure the specialized company follows the clas-
sification of the material parts for the separation.
Observe the local regulations and dispose the device
accordingly with the international rules for environ-
ment protection.
10 SPARE PARTS
10.1 Spare-parts request
When ordering spare parts, please quote their desi-
gnation, position number in the cross section drawing
and rated data from the pump name plate.
The spare parts request shall be sent to CALPEDA
S.p.A. by phone, fax, e-mail.
11 DESIGNATION OF PARTS
Nr.
Designation
14.00 Pump casing
14.04 Plug with washer
14.12 Plug with washer
14.20 Casing gasket
14.24 Stud
14.28 Nut
28.00 Impeller
28.04 Impeller nut
28.20 Impeller key
32.04 Screw
32.05 Nut
34.00 Casing cover
34.12 Stud
34.16 Nut
36.00 Mechanical seal
36.50 Mechanical seal circlip
38.00 Packing
42.00 Cover plate for seal
42.04 O-ring for cover plate
43.00 External jacket (Packing)
43.01 O-ring (Packing)
44.00 Stuffing box gland
44.04 Lantern ring
46.00 Deflector
60.00 Bearing housing
60.02 Support foot
62.00 Bearing cover, impeller side
62.04 Gasket
62.08 Screw
62.12 Lubrificating nipple
63.00 Ball bearing, impeller side
64.00 Pump shaft
64.08 Shaft sleeve
64.12 O-ring shaft sleeve
64.16 Key for shaft sleeve
64.20 Key for shaft end
66.00 Ball bearing, coupling side
66.04 Shoulder ring for bearing housing
66.08 Circlip for bearing housing
66.12 Shoulder ring for shaft
66.16 Circlip for shaft
68.00 Bearing cover, coupling side
68.04 Gasket
68.08 Screw
68.12 Lubrificating nipple
Changes reserved.
OFF
OFF
Fig. 10 Disassembly sequence.
1
2
3
4
4.93.039
IST N_N4 09_2018_Rev13_MXS 11_03con gall 10/09/18 10:52 Pagina 18
