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NM-NMD Rev23 - Operating Instructions
Maintenance operations that are not described in
this manual must be made only by special personnel
authorized by Calpeda S.p.A.
For further technical information regarding the use or
the maintenance of the device, contact Calpeda S.p.A.
8.1. Routine maintenance
OFF
Before every maintenance operations
disconnect the power supply and make sure
that the device could not accidentally operate.
For good measure, as in the case of temporary
operation with dirty liquids, run the pump
briefly with clean water to remove deposits.
When the pump remains inactive it must be
emptied completely if there is a risk of freezing
(par. 12.3 fig. 4).
To empty completely the NMD and C 16 pumps it is also
necessary to take out the delivery casing (20.00/14.00)
by removing the screws (20.12/14.24).
Before restarting the unit, check that the shaft is not
jammed and fill the pump casing completely with liquid.
8.2. Dismantling the system
Close the suction and delivery gate valves and drain
the pump casing before dismantling the pump.
8.3. Dismantling the pump
OFF
Close the suction and delivery gate valves and drain
the pump casing before dismantling the pump.
For dismantling and re-assembly see construction in
the cross section drawing.
With the NM, C, pumps the motor can be taken out, by
remowing the screws (14.24), complete with impeller
without removing the pump casing and the pipes.
With NMD pumps it is also necessary to take out the
pump casing (suction casing 16.00 or delivery casing
20.00) by removing the screws (20.12).
9. DISPOSAL
OFF
The final disposal of the device must be done by
specialized company.
Make sure the specialized company follows the
classification of the material parts for the separation.
Observe the local regulations and dispose the device
accordingly with the international rules for environment
protection.
10. SPARE PARTS
10.1.
Spare-parts request
When ordering spare parts, please quote their
designation, position number in the cross section
drawing and rated data from the pump name plate
(type, date and serial number).
The spare parts request shall be sent to CALPEDA
S.p.A. by phone, fax, e-mail.
11. ESIGNATION OF PARTS
Nr.
Designation
14.00
Pump casing
14.04
Plug (filling)
14.12
Plug (draining)
14.20
O-ring
14.24
Screw
16.00
Suction casing
16.04
Plug with washer
16.12
Air release plug with washer
16.20
Casing gasket
18.00
Interstage plate
20.00
Delivery casing
20.04
Plug with washer
20.12
Screw
28.00
Impeller
28.04
Impeller nut
28.12
Circlip
28.20
Impeller key
30.00
Impeller
32.00
Lantern bracket
32.30
Guard
32.32
Screw
32.33
Caged Nut
36.00
Mechanical seal
36.50
Shoulder ring
46.00
Deflector
70.00
Lantern bracket
70.18
Screw
70.19
Nut
70.20
Screw
73.00
Pump-side bearing
76.00
Motor casing with winding
76.04
Cable gland
76.16
Support
76.20
Pin
76.54
Terminal box, set
78.00
Shaft with rotor packet
81.00
Fan-side bearing
82.00
Motor end shield, fan side
82.04
Compensating spring
88.00
Motor fan
90.00
Fan cover
90.04
Screw
92.00
Tie-bolt
94.00
Capacitor
94.02
Capacitor gland
98.00
Terminal box cover
98.04
Screw
98.08
Gasket
99.00
Motor, complete
Changes reserved.
NM-NMD Rev23.indd 12
19/04/17 10:13