Intended Use; Description; Type Key; Technical Characteristics - salmson NOLH Installation Et Mise En Service

ENGLISH
Lifting a pumpset :
4 INTENDED USE
NOLH pumps are used for handling of clear or slightly turbid fluids
without any particle content.
Designed according to EN 733 & ISO 5199 this pump can be used to
replace most of normalized pumps.
Various materials and shaft sealings are available to match major
industrial needs.
NOLH pumps are used in every kind of industrial plants, for HVAC, water
supply, irrigation, ...
5 DESCRIPTION
5.1 TYPE KEY
Pump description is engraved on pump name plate. It gives a
general description of pump design. The nameplate is attached to
pump bearing bracket.
Description of a NOLH pump is created as follows :
Example : NOLH32‐160A‐FAJ‐32‐T0,55/4K‐2D‐X
NOLH Pump product line
32 Nominal diameter of discharge flange [mm]
160A Nominal diameter of impeller [mm] and hydraulic
type
F Material used for casing and casing seal
A Mechanical seal type
J Mechanical seal faces and O'Ring
3 Ball bearing type
2 Elastic coupling model for pump set
T Type of electric power supply
0,55 Installed power P
4 Number of pole
K Motor option
2D ATEX option
X Specificity
Detailed technical features of the product are described in
acknowledgment of order or upon request to SALMSON Customer
Department.
5.2 TECHNICAL CHARACTERISTICS
5.2.1 MATERIALS

Material
 Casing : cast iron (EN‐GJL250) or stainless steel (AISI 316).
 Casing cover : cast iron (EN‐GJL250) or stainless steel (AISI 316).
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2
 Shaft : steel (X20 Cr13 ‐ AISI 420) or stainless steel (AISI 316).
 Impeller : cast iron (EN‐GJL250), stainless steel (AISI 316) or bronze (G‐
CuSn10).
 Bearing housing : cast iron (EN‐GJL250).
 Shaft sleeve for bearing bracket size 55 and 65 : steel (X20 Cr13 ‐ AISI
420).
 Shaft sleeve for packing gland arrangement : steel (X20 Cr13 ‐ AISI
420) or stainless steel (AISI 316).

Sealing
 Casing gasket : flat seal made of a aramid fibers compound or flexible
PTFE.
 Shaft sealing : single mechanical seal (flushing or quench as an option)
or packing gland. Various types of faces materials and O'rings are
available. See acknowledgement of order for detailed description.
5.2.2 PERFORMANCE AND OPERATING LIMITS
TEMPERATURE
Pumps with single mechanical seal arrangement : from ‐20°C to +120°C.
Pumps with gland packing arrangement : from ‐40°C to 110°C
5. 2. 2. 1 PRESSURE
All variants : maximum working pressure PS = 16 bar
With the exception of following pumps with cast iron casing :
 NOLH150‐500 : 14 bar
 NOLH200‐250 to 300‐500 : 10 bar
Hydrostatic test pressure : 1,3 x PS
5. 2. 2. 3 Minimum flo w for co nti nuo us operatio n
Permitted flow range :
Q is the constant flow corresponding to Best Efficiency Point.
opt
0,3.Q <Q<1,1.Q
opt opt
0,5.Q <Q<1,1.Q
opt opt
0,7.Q <Q<1,2.Q
opt opt
When the pump is used in an ATEX zone it is necessary to
measure the duty point and check that temperature
increase corresponding to each working condition is acceptable
regarding selected surface temperature.
The formula below gives the correspondence between surface
temperature / fluid temperature and pump efficiency :
T =T +
o f v

=[(g.H)/(c.)]*(1‐)
v
With :
c=calorific capacity of fluid in J/Kg.K
g=gravity in m/s²
H=pump head in m
T =liquid temperature in °C
f
T =surface temperature in °C
o
=hydraulic efficiency at duty point

=differential temperature
v
5. 2. 2. 4 MAXIMUM ALLOWA BLE SPEED A ND NUMBER
OF STA RTS PER HOUR
Maximum speed :
The maximum speed for each pump size is indicated in the table
below. Maximum allowable speed depends on impeller diameter,
working temperature and impeller diameter.
8
PUMP SIZE
32‐125 to 80‐400
100‐315 to 100‐400
125‐315 to 125‐400
150‐250 to 150‐500
100‐160 to 100‐250
125‐200 to 125‐250
150‐200
200‐500 to 300‐500
200‐250 to 200‐400