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CR/EN (1004) 4.0 General 15
CombiPro
2.4 Serial number
Serial number of the pump or pump unit are shown on the name plate off the pump and
on the label on the cover of this manual.
2.5 Construction
The pump has a modular design. The main components are:
• Pump casing
•Impeller
• Shaft sealing
•Bearing
In general for each individual pump type there is only one design of the pump casing and
the impeller. So, the hydraulic performance is fixed. However for several pump types
there has been developed an additional “low’ or “high flow” design. The required
capacity and head are obtained by pump speed selection and, if necessary, reduction of
the impeller diameter.
The pumps are divided into three bearing groups. Each bearing group only has one pump
shaft and one bearing arrangement.
The pumps are also standardized into six groups with the same connection for the pump
casing and pump cover, depending on the nominal impeller diameters. For each
combination of shaft and nominal impeller diameter there is one pump cover, in various
materials, and one bearing bracket which is made from carbon steel.
The various designs of pumps are created by the addition of shaft seal “cartridges”.
These “cartridges” are standardized in the same three groups as the pump shafts and
are designed in accordance with API 682 (identical to ISO 21049).
In addition to this various material varieties can be used for components which come into
contact with the pumped liquid.
2.6 Pump casing
On the suction side of the impeller the pump casing is provided with a renewable wear
ring. An anti-rotation partition is fitted into the inlet. The centering edge for the pump
cover is located on the outside of the packing for the pump casing and does not
therefore come into contact with the liquid.
The suction and discharge flanges are designed and machined in accordance with
ASME B16.5 300 lbs RF (ISO 7005 PN50), and it is also possible to supply the flanges
drilled in accordance with the ASME B16.5 150 lbs RF (ISO 7005 PN20). The outside
diameter and the thickness of the inlet and outlet flanges are, in this case, in accordance
with ASME B16.5 300 lbs. The surface finish of the flanges is according ASME B16.5
requirements. The drain of the pump casing is a “butt-welded” flanged design coherent
to the pump casing’s pressure class.
Example: 01-1000675A
01 year of manufacture
100067 unique number
5 number of pumps
Apump with motor
B pump with free shaft end