Grundfos DWK Safety Instructions And Other Important Information page 2

English (GB) Safety instructions
Original safety instructions
These safety instructions give a quick overview of
the safety precautions to be taken in connection with
any work on this product.
Observe these safety instructions during handling,
installation, operation, maintenance, service and
repair of this product.
These safety instructions is a supplementary
document, and all safety instructions will appear
again in the relevant sections of the installation and
operating instructions.
Keep these safety instructions at the installation site
for future reference.
Read this document before installing the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
Operating conditions
Operating mode
The pumps are designed for continuous operation,
S1, or intermittent operation, S3.
Operating mode S3 means that within 10 minutes the
pump must be in operation for 4 minutes and
stopped for 6 minutes.
Maximum starts per hour
DWK.O: 30 starts per hour
DWK.E: 18 starts per hour
DWK.H: 15 starts per hour
DPK: Maximum 30 starts per hour
pH value
Pumps in permanent installations can cope with pH
values ranging from 4 to 10.
Liquid temperature
0 to 40 °C
Ambient temperature (if the pump is not fully
submerged)
0 to 40 °C
Density of pumped liquid
3
Maximum 1000 kg/m
In the case of higher densities, contact Grundfos.
Maximum operating pressure
5.7 bar
Installation depth
DWK: Maximum 25 m below liquid level.
DPK: Maximum 20 m below liquid level.
Max. altitude above sea level
2000 m
2
Installing the product
DANGER
Electric shock
Death or serious personal injury
- Before beginning the installation, switch
off the power supply and lock the main
switch in position 0.
- Before working on the pump, switch off
any external voltage connection to the
pump.
CAUTION
Sharp element
Minor or moderate personal injury
- Wear protective clothing (gloves) when
working on the pump.
Mechanical installation
DANGER
Electric shock
Death or serious personal injury
- Before installation and the first startup
of the product, check the power cable
for visible defects and measure the
cable resistance to avoid short circuits.
Lifting the product
WARNING
Crushing hazard
Death or serious personal injury
- All lifting equipment must be rated for
the purpose and checked for damage
before any attempts are made to lift the
product. The lifting equipment rating
must under no circumstances be
exceeded.
CAUTION
Crushing hazard
Minor or moderate personal injury
- The area below the lifted pump must be
clear of people and marked off.
- Lift the pump in a way that the pump will
not start swing.
- Place the pump on a solid foundation
which is suitable to hold the weight.
- Make sure that the pump cannot roll or
fall over.