Lowara e-NSCS Manuel D'installation, D'utilisation Et D'entretien page 14

en - Translation of the original instructions
• Liquids not compatible with the pump construction materials
• Hazardous liquids (such as toxic, explosive, flammable, or corro-
sive liquids)
• Potable liquids other than water (for example, wine or milk)
Examples of improper installation:
• 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 Figure 6 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 Figure 7
The nameplate provides information regarding the impeller and casing
material, the mechanical seal and their materials. For more informa-
tion, see Figure 8 .
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 power end
• 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 of motor
• Grease lubrication
See the sectional drawing Figure 9
3.5 Material
The metallic parts of the pump that come in contact with water are
made of the following:
14
.
Standard/ Material
Optional code
Standard CC
Standard CB
Standard CN
Standard DC Ductil Iron /
Standard DB Ductil Iron /
Standard DN Ductil Iron /
Standard NN
Steel / Stain-
Optional RR Duplex / Du-
3.6 Mechanical seal
Unbalanced single mechanical seal acc. EN 12756, version K Dimen-
sions. See Table 10 .
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 + P ≤ PN
1max max
P Maximum inlet pressure
1max
P Maximum pressure generated by the pump
max
PN Maximum operating pressure
Liquid temperature intervals
Version Gasket
Standard EPDM
Optional FPM (FKM)
For special requirements, contact the Sales and Service Department.
Maximum number of starts per hour
kW 0.25 - 4.00 -
3.00 7.50
Starts 60 40
per hour
Noise level
See the measuring surface sound pressure levels L
e-nscs Installation, Operation, and Maintenance Manual
Material EN733 Extension
casing/ range
impeller
32–125 to 200–250,
150-400 200–315,
250–315
Cast iron / X
Cast Iron
Cast Iron / X
Bronze
Cast Iron / X
Stainless
Steel
Cast Iron
Bronze
Stainless
Steel
Stainless X
less Steel
X
plex
Minimum Maximum
-20°C (-4°F) 140°C (284°F)
-10°C (14°F) 90°C (194°F)
11 - 22 30 - 37 45 - 75 90 – 160
25 16 8
in Table 11
pA
range
X
X
X
X
4
.