English (GB)
5
pH value
SL1 and SLV pumps in permanent installations can
be used for pumping liquids with the following pH
values:
1)
For fluctuating pH values, the range is pH 4 to
14.
Liquid temperature
0-40 °C.
For short periods (maximum 3 minutes) a
temperature of up to 60 °C is permissible (non-Ex
versions only).
Ambient temperature
-20-40°C
For non-explosion-proof pumps, the ambient
temperature may exceed +40 °C for a short period
(maximum 3 minutes).
Density and viscosity of pumped liquid
When pumping liquids with a density and/or a
kinematic viscosity higher than that of water, use
motors with correspondingly higher outputs.
Flow velocity
We recommend that you keep a minimum flow
velocity to avoid sedimentations in the piping
system. Recommended flow velocities:
• in vertical pipes: 1.0
0.7 m/s
• in horizontal pipes: 0.7
1.0 m/s.
Free spherical passage
From 50 to 100 mm, depending on pump size.
Operating mode
Maximum 20 starts per hour.
3. Delivery and handling
The pump may be transported and stored in a
vertical or horizontal position.
3.1 Transportation
All lifting equipment must be rated for the purpose
and checked for damage before any attempts to lift
the pump. The lifting equipment rating must under no
circumstances be exceeded. The pump weight is
stated on the pump nameplate.
3.2 Storage
During long periods of storage, the pump must be
protected against moisture and heat.
Storage temperature: -30 °C to +60 °C.
If the pump has been in use, the oil must be changed
before storage.
After a long period of storage, the pump must be
inspected before it is put into operation. Make sure
that the impeller can rotate freely. Pay special
attention to the condition of the shaft seal, O-rings,
oil and the cable entry.
Pump
type
Material
variant
Material pH value
SL1/SLV Standard
Cast-iron
impeller and
pump housing
6.5 - 14
1)
SLV Q
Stainless-steel
impeller and
cast-iron pump
housing
6-14
1)
Explosion-proof pumps must never pump
liquids of a temperature higher than +40
°C.
For explosion-proof pumps, the ambient
temperature on the installation site must
be in the range from -20 °C to +40 °C.
For explosion-proof pumps with WIO
sensor, the ambient temperature on the
installation site must be in the range from
0-40 °C.
CAUTION
Crushing hazard
Minor or moderate personal injury
- Make sure the pump cannot roll or fall
over.
WARNING
Crushing hazard
Death or serious personal injury
- Always lift the pump by its lifting bracket
or by means of a fork-lift truck if the
pump is fixed on a pallet. Never lift the
pump by means of the power cable or
the hose or the pipe.
If the pump is stored for more than one
year or it takes a long time before it is put
into operation after the installation, the
impeller must be turned at least once a
month.
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