Product Introduction; Applications; Identification; Pump Key - Grundfos SPK Series Installation And Operating Instructions Manual

4. Product introduction

4.1 Applications

The Grundfos pumps, type SPK, are multistage
centrifugal pumps designed for pumping liquids for
machine tools, condensate transfer, liquid transfer in
industrial washing machines and similar
applications.
WARNING
Fire and explosion
Death or serious personal injury
- Do not use the pump for flammable,
combustible or explosive liquids.
The pumps are designed for pumping liquids with a
density and viscosity corresponding to those of
water. The pumped liquid must not contain abrasive
particles or fibres.
When pumping liquids with a density or viscosity
higher than that of water, the motor size must be
taken into consideration.

4.2 Identification

The standard range of pumps encompasses
complete impeller-in-chamber combinations.
Depending on duty combinations, other lengths can
on request be supplied by fitting empty intermediate
chambers instead of standard chambers with
impellers.
The pump key on the pump nameplate indicates the
number of chambers and impellers fitted to the
pump.

4.3 Pump key

Example SPK 4 - 16 / 2 -x -x -x -xxxx
Pump range
3
Nominal flow rate in m /h
Number of stages
Number of impellers
Code for pump version
Code for pipe connection
Code for materials
Code for shaft seal and rubber pump parts

5. Servicing the product

WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product,
make sure that the power supply has
been switched off and that it cannot be
accidentally switched on.
WARNING
Moving parts
Death or serious personal injury
- Tighten the coupling screws to the
correct torque.
- Install the coupling guards securely to
the pump with the screws intended for
this purpose.
CAUTION
Corrosive liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Toxic liquids
Death or serious personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Hot or cold surface
Minor or moderate personal injury
- Make sure that no one can accidentally
come into contact with hot or cold
surfaces.

5.1 Maintaining the product

Pumps installed in accordance with these
instructions require very little maintenance.
The mechanical shaft seal is self-adjusting and has
wear-resistant seal rings which are lubricated and
cooled by the pumped liquid.
The pump bearings are also lubricated by the
pumped liquid. The motor ball bearings are grease
packed and sealed for life. No further lubrication is
necessary.
Pumps from 4 kW and up have angular contact
bearings.
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