29 255548 Rev.1
9.2.4 Operating liquid
9.2.4.1 Water
Risk of material damage caused by corrosion and
deposits in the pump due to poor water quality!
▶ If possible, use operating water featuring the following
quality.
Th
e following recommendations apply to operating
water temperatures < 122 °F.
Hydrological data
Max.
Unit of Measure
pH value
7.0 – 9.0
-
Conductivity
10…150
mS/m (t = 25 °C)
Total hardness
< 15
°dH
Carbonate hardness
< 4
°dH
Carbonate hardness with
hardness stabilisation
< 15
°dH
Chloride Cl
< 100
mg/l
Sulphate SO4
< 150
mg/l
Ammonium NH4
< 1
mg/l
Iron Fe
< 0.2
mg/l
Manganese Mn/copper
Cu
< 0.1
mg/l
Free of solids / rust
< 0.1
mg/l
Tab. 20 Hydrological data for operating water
▶ For higher temperatures, the hardness, conductivity and
chloride values must be reduced.
Risk of material damage caused by deposits from the
overall cycle, which may enter the pump!
▶ Use non-corrosive materials in the overall cycle.
▶ Ensure that deposits from the overall cycle cannot
enter the pump.
Th
e manufacturer does not accept liability for
corrosion damage to pump parts.
Th
e manufacturer recommends seeking the advice of
a company specialised in water treatment and water
maintenance (e.g. www.schweitzer-chemie.de ) to
provide adequate corrosion protection.
9.2.4.2 Other operating liquids
When using operating liquids other than water, please
contact the manufacturer.
C A U T I O N
C A U T I O N
9.2.4.3 Flow rate, delivery of liquids, fi lling volume
Type
Flow rate
[GPM]
80 mbar/59
o
F
Max.
liquid
delivery
[m
3
/h]
Filling
volume up
to middle
of the shaft
[QT]
SM30B
4.8
0.6
0.4
SM55B
4.0
1.8
3.0
SM75B
4.0
1.8
3.4
SM100B
4.4
2
4.2
SM200B
6.0
2.8
4.5
SM250B
7.1
3.2
5.0
Tab. 21 Flow rate, delivery of liquids, fi lling volumes
9.2.5 Medium to be pumped
Gases and vapours
• dry or wet, not explosive, infl ammable, aggressive
or toxic
• air or air-steam mixtures
− which are free of solids
− which contain small amounts of light particulate
matters
For explosive, infl ammable, aggressive or toxic gases
and vapours, please consult the manufacturer.
9.2.6 Operating connections
Type
Process water
connection
Suction
connection
Pressure
connection
Size
Shape
Size
Shape
Size
Shape
SM30B
1/4”
T
1”
T
1”
T
SM55B
1/2”
T
1 1/2”
T
1 1/2”
T
SM75B
1/2”
T
1 1/2”
T
1 1/2”
T
SM100B
1/2”
T
2”
T
2”
T
SM200B
1”
F
2 1/2”
T
2 1/2”
F
SM250B
1”
F
3”
T
2 1/2”
T
Shape: T = Th
read, F = Flange
Tab. 22 Operating connections
9.2.7 Mechanical seal
All aggregates are fi tted with mechanical seals.
Typical features are
− single seal
− not pressure-relieved
− conical spring
− dependent on the direction of rotation
