9. Technical data
9.1 Operating conditions
9.1.1 Ambient temperature and altitude
See the instructions for the motor which are supplied
with the pump.
9.1.2 Maximum system pressure and liquid
temperature
The maximum permissible system pressure and liquid
temperature are stated on the nameplate which is
placed on the pump. For identification of the
nameplate data, see the section on the nameplate.
Related information
9.1.3 Maximum permissible operating pressure
and liquid temperature for the shaft seal
The operating range of a shaft seal depends on the
operating pressure, the liquid temperature and the
type of shaft seal.
The selection charts show which shaft seals are
suitable at a given temperature and a given pressure.
See figs Maximum permissible operating pressure
and liquid temperature for pumps with
≤ 55 kW and Maximum permissible operating
pressure and liquid temperature for pumps with
kW. The charts apply to clean water.
Shaft seals for
∅
22 shaft ends: CR, CRN with
motors up to and including 55 kW
-40
-20
0
20
120
140
40
60
80
100
0
10
20
30
40
50
HQQE/V
HQBE/V
HQQE/V
HQQE
HQBE
HQQE
t
[°C]
p
[bar]
TM061408
Maximum permissible operating pressure and liquid
temperature for pumps with
∅
22 shaft seal, ≤ 55
kW
Shaft seals for
∅
28, 75-110 kW, and
∅
36, 132-200
kW, shaft ends
-40
-20
0
20
120
140
40
60
80
100
0
10
20
30
40
50
HQQE/V
HBQE/V
HQQE/V
HQQE
HBQE
HQQE
p
[bar]
t
[°C]
TM061409
Maximum permissible operating pressure and liquid
temperature for pumps with
∅
28 shaft seal, 75-110
kW, and
∅
36 shaft seal, 132-200 kW
9.1.4 Minimum inlet pressure
Hv
H
NPSH
pb
Hf
TM0201
18
Schematic view of open system with a CR pump
30
English (GB)
Summary of Contents for CRN 125-11
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