Wilo -NL 32-125 Einbau- Und Betriebsanleitung Seite 23

1. General
1.1 About this document
These Installation and Operating Instructions
form an integral part of the unit. They must be
kept close to the unit and in readiness whenever
required. Precise observance of these instructions
is a pre-condition for use of the unit for the
intended purpose and for its correct operation.
These Installation and Operating Instructions
conform to the relevant version of the equip-
ment and the underlying safety standards valid
at the time of going to prese.
2. Safety
This leaflet contents all safety instructions which
must be followed when installing and operating
the pump. It is therefore imperative that they be
read by both the installer and the operator
before the pump is installed or operated. Both
the general safety instructions in this section and
the more specific safety points in the following
sections should be observer.
2.1 Instruction symbols used in this operating
manual
Symbols
General danger symbol.
Hazards from electrical causes.
NOTE: ....
Signal words:
DANGER! Imminently hazardous situation. Will
result in death or serious injury if not avoided.
WARNING! Risk of (serious) injury. 'Warning'
implies that failure to comply with the safety
instructions is likely to result in (severe) per-
sonal injury.
CAUTION! Risk of damage to the
pump/installation. 'Caution' alerts to user to
potential product damage due to non-compli-
ance with the safety instructions.
NOTE! Useful information on the handling of the
product. It alerts the user to potential difficulties.
2.2 Personnel qualification
The personnel installing the pump must have the
appropriate qualification for this work.
2.3 Risks incurred by failure to comply with the
safety instructions
Failure to comply with the safety precautions
could result in personal injury or damage to the
pump or installation. Failure to comply with the
safety precautions could also invalidate any claim
for damages.
In particular, failure to comply with these safety
instructions could give rise, for example, to the
WILO AG 09/2007
following risks:
• Failure of important pump or system functions,
• Personal injury due to electrical, mechanical and
bacteriological causes.
2.4 Safety instructions for the operator
The relevant accident precaution regulations
must be observed.
Potential dangers caused by electrical energy
must be excluded. Local or general regulations
[e.g. IEC, VDE, etc.] and directives from local
energy supply companies are to be followed.
• If high or low temperature pump/pump set com-
ponents involve hazards, steps must be taken to
avoid accidental contact.
• Guards for moving parts (e.g. couplings) must not
be removed from the pump/pump set while in
operation.
• Any leakage of hazardous (e.g. explosive, toxic,
hot) fluids (e.g. from the shaft seal) must be
drained safely so as to prevent any risk to per-
sons or the environment. Statutory regulations
are to be complied with.
• The pump should not in any case to running
without liquid. The destruction of the sealing
end shaft which can result from such a use would
cause leakes of fluid damaging the safety of the
people and the environment.
2.5 Safety instructions for inspection and assembly
The operator must ensure that all inspection and
assembly work is carried out by authorised and
qualified specialists who have carefully studied
these instructions.
Work on a pump or installation should only be
carried out once the latter has been brought to a
standstill.
Pumps and pump sets, which convey hazardous
media, must be decontaminated.
On completion of the work all safety and protec-
tive guards must be re-installed and made ope-
rative again.
Prior to re-starting the machine, the instructions
listed under "first commissioning" are to be
observed.
2.6 Unauthorised modification and manufacture of
spare parts
Changes to the pump/machinery may only be
made in agreement with the manufacturer. The
use of original spare parts and accessories
authorised by the manufacturer will ensure safe-
ty. The use of any other parts may invalidate
claims invoking the liability of the manufacturer
for any consequences.
2.7 Improper use
The operating safety of the pump or installation
can only be guaranteed if it is used in accordance
with paragraph 4 of the operating instructions.
All values must neither exceed nor fall below the
limit values given in the catalogue or data sheet.
English
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