2. Safety
This manual contains general instructions that must be observed
during installation, operation and maintenance of the pump. This
manual must therefore be read by the installation engineer and the
relevant qualified personnel/operators prior to installation and start-
up, and must be available at the installation location of the pump at
all times.
It is not only the general safety instructions given in this "Safety"
section that must be observed, but all special safety instructions
given in the other sections.
2.1 Identification of safety instructions in this manual
If the safety instructions or other advice in this manual are not
observed, it may result in personal injury or malfunction and
damage to the pump. The safety instructions and other advice are
identified by the following symbols:
Warning
If these safety instructions are not observed, it may result
in personal injury.
Caution
If these safety instructions are not observed, it may result
in malfunction or damage to the equipment.
Note
Notes or instructions that make the job easier and ensure
safe operation.
Information provided directly on the pump, e.g. labelling of fluid
connections, must be maintained in a readable condition at all
times.
2.2 Qualification and training of personnel
The personnel responsible for the operation, maintenance,
inspection and installation must be appropriately qualified for these
tasks. Areas of responsibility, levels of authority and the supervision
of the personnel must be precisely defined by the operator.
If the personnel do not have the necessary knowledge, the
necessary training and instruction must be given. If necessary,
training can be performed by the manufacturer/supplier at the
request of the operator of the pump. It is the responsibility of the
operator to make sure that the contents of this manual are
understood by the personnel.
2.3 Risks when safety instructions are not observed
Non-observance of the safety instructions may have dangerous
consequences for the personnel, the environment and the pump. If
the safety instructions are not observed, all rights to claims for
damages may be lost.
Non-observance of the safety instructions may lead to the following
hazards:
•
failure of important functions of the pump/system
•
failure of specified methods for maintenance
•
harm to humans from exposure to electrical, mechanical and
chemical influences
•
damage to the environment from leakage of harmful
substances.
2.4 Safety-conscious working
The safety instructions in this manual, applicable national health
and safety regulations and any operator internal working, operating
and safety regulations must be observed.
2.5 Safety instructions for the operator/user
Hazardous hot or cold parts on the pump must be protected to
prevent accidental contact.
Leakages of dangerous substances (e.g. hot, toxic) must be
disposed of in a way that is not harmful to the personnel or the
environment. Legal regulations must be observed.
Damage caused by electrical energy must be prevented (for more
details, see for example the regulations of the VDE and the local
electricity supply company).
2.6 Safety instructions for maintenance, inspection and
installation work
The operator must ensure that all maintenance, inspection and
installation work is carried out by authorised and qualified
personnel, who have been adequately trained by reading this
manual.
All work on the pump should only be carried out when the pump is
stopped. The procedure described in this manual for stopping the
pump must be observed.
Pumps or pump units which are used for media that are harmful to
health must be decontaminated.
All safety and protective equipment must be immediately restarted
or put into operation once work is complete.
Observe the points described in the initial start-up section prior to
subsequent start-up.
Warning
The pump must be installed in a position where it is easily
accessible during operation and maintenance work.
Observe the flow direction of valves (indicated by an ar-
row on the valve)!
Only tighten plastic valves by hand.
Only use the prescribed line types!
Electrical connections must only be carried out by quali-
fied personnel!
Warning
Make sure that the pump is suitable for the actual dosing
medium!
Observe the chemical manufacturer's safety instructions
when handling chemicals!
Do not operate the pump next to closed valves.
Warning
The pump housing, control unit and sensors must only be
opened by personnel authorised by Grundfos!
Repairs must only be carried out by authorised and quali-
fied personnel!
Wear protective clothing (gloves and goggles) when work-
ing on the dosing head, connections or lines!
Before removing the dosing head, valves and lines, empty
any remaining medium in the dosing head into a drip tray
by carefully unscrewing the suction valve.
Caution
The resistance of the parts that come into contact with the
media depends on the media, media temperature and op-
erating pressure. Ensure that parts in contact with the me-
dia are chemically resistant to the dosing medium under
operating conditions!
5
English (GB)
Summary of Contents for DMH 25X
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