• Hazardous locations (such as explosive, or corrosive atmos-
pheres).
• Location where the air temperature is very high or there is poor
ventilation.
• Outdoor installations where there is no protection against rain or
freezing temperatures.
DANGER:
Do not use this pump to handle flammable and/or explosive
liquids.
NOTICE:
• Do not use this pump to handle liquids containing abrasive, solid,
or fibrous substances.
• Do not use the pump for flow rates beyond the specified flow
rates on the data plate.
Special applications
Contact the local sales and service representative in the following cas-
es:
• If the density and/or viscosity value of the pumped liquid exceeds
the value of water, such as water with glycol; as it may require a
more powerful motor.
• If the pumped liquid is chemically treated (for example softened,
deionized, demineralized etc.).
• Any situation that is different from the ones that is described and
relate to the nature of the liquid.
3.2 Pump description
See
for an explanation of the description code for the pump
and one example.
3.3 Nameplate
The nameplate is a metal label that is located on the bearing bracket.
The name plate lists key product specifications. For more information,
see
.
The nameplate provides information regarding the impeller and casing
material, the mechanical seal and their materials. For more informa-
tion, see
IMQ or TUV or IRAM or other marks (for electric pump only)
Unless otherwise specified, for products with a mark of electrical-relat-
ed safety approval, the approval refers exclusively to the electrical
pump.
3.4 Design structure
• Dimensions according EN 733 and additional not standardized
extension sizes
• Volute casing pump with back pull out bearing bracket or stub
shaft connection
• Single stage
• For horizontal assembly
Part
Description
Casing
• Radial split volute casing with radial discharge
• Replaceable wear ring
Impeller
• Closed radial impeller with wear rings on both
sides
Shaft seal
• Single mechanical seal acc. EN 12756
• Optional cartridge mechanical seal
Bearings
• Radial ball bearings
• Grease lubrication
• Optional: oil lubrication (Advanced bearing
bracket)
See the sectional drawing
3.5 Material
The metallic parts of the pump that come in contact with water are
made of the following:
Standard/
Optional
Material
code
Material
casing/
impeller
EN733
range
32–125 to
150-400
Extension
range
125-500,
150-500 to
300-450
Standard
CC
Cast iron /
Cast Iron
X
Standard/
Optional
Material
code
Material
casing/
impeller
EN733
range
32–125 to
150-400
Extension
range
125-500,
150-500 to
300-450
Standard
CB
Cast Iron /
Bronze
X
Standard
CN
Cast Iron /
Stainless
Steel
X
Standard
DC
Ductil Iron /
Cast Iron
X
Standard
DB
Ductil Iron /
Bronze
X
Standard
DN
Ductil Iron /
Stainless
Steel
X
Standard
NN
Stainless
Steel / Stain-
less Steel
X
Optional
RR
Duplex / Du-
plex
X
X
3.6 Mechanical seal
Unbalanced single mechanical seal acc. EN 12756, version K Dimen-
sions. See
3.7 Application limits
Maximum working pressure
This flow chart shows the maximum working pressure depending on
the pump model and the temperature of the pumped liquid.
P
1max
+ P
max
≤ PN
P
1max
Maximum inlet pressure
P
max
Maximum pressure generated by the pump
PN
Maximum operating pressure
Liquid temperature intervals
Version
Gasket
Minimum
Maximum
Standard
EPDM
-20°C (-4°F)
140°C (284°F)
Optional
FPM (FKM)
-10°C (14°F)
90°C (194°F)
For special requirements, contact the Sales and Service Department.
Maximum number of starts per hour
This table shows the number of starts allowed per hour for motors sup-
plied by Lowara:
kW
0.25 -
3.00
4.00 -
7.50
11 - 22 30 - 37 45 - 75
90 –
160
185 -
355
Starts
per
hour
60
40
25
16
8
4
3
en - Translation of the original instructions
14
e-NSC Installation, Operation, and Maintenance Manual
