Operating manual for centrifugal pumps AT - TB… - MC… - TC… - TMA
38
18 - SPARE PARTS
When ordering the pump it is good practice to also order the necessary spare parts, especially when there are no stand-
by pumps in the installation. This will minimise unnecessary down times in the event of pump failure or routine
maintenance.
For better parts management, the VDMA 24296 standards suggest to stock the number of parts in function of the number
of pumps being used by the plant (see following table).
Spare parts
Components
Identical pumps number (stand-by pumps included)
2 3 4 5
6
and
7
8
and
9
10
and
more
Number of spare parts
Suction and discharge elements
1 1
2
2 2 3
30%
Impellers 1
Radial seal rings
2 2
2
3 3 4
50%
Ball or roller bearings
Shaft complete with keys, nuts, shoulder rings, etc.
1 1
2
2 3
30%
Bushes
3 4
50%
Shaft protection sleeves
2
2
3
Neck
rings
1 1
2 2 3
30%
Packing
rings
16 16 24 24 24 32 40%
Gaskets for pump casing (Set)
4 6 8 8 9
12 150%
Other gaskets (Set)
10 100%
Mech
ani
cal
seal
s
Rotating part
2 3
4 5 6 7
90%
Stationary part
Rotating part gasket
6 8 8 10
150%
Stationary part gasket
Springs
1 1 1 1 2 2
20%
Bearing housing groups complete with shaft,
bearings, covers, seal rings, etc.
--- --- --- --- --- 1 2
Coupling
inserts
(Set)
2 3 4 5 6 7
75%
On the pump nameplate there are printed pump model, year of manufacture and pump serial number.
When ordering spare parts always provide this information.
Pump type, parts item number (VDMA) and description per the pump sectional drawing and parts list is useful information
which helps to supply correct spare parts for your pump.
We recommend the use of original spares: in case this is not respected, POMPETRAVAINI declines any responsibility
for possible damages and not correct running caused by not original spare parts.
