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1. General
These instructions are meant to be complementary
to the installation and operating instructions of
TOP-series pumps.
1.1 Application
The TOP-series circulating pumps are constructed
such that individual defect component parts can be
exchanged onsite for new parts.
2. Safety Notes
These instructions contain basic rules on safety
which must be strictly adhered to when dismantling
and re-assembling spare part components. It is
therefore imperative for the Installer and the Opera-
tor to read these instructions prior to installation
and commissioning. Please observe, not only the
general safety references listed under the main
heading SAFETY NOTES, but also those added to
and specially highlighted under the ensueing
headers.
2.1 Safety symbols contained herein
Safety notes contained herein which, if not strictly
adhered to, may cause injury to persons are special-
ly highlighted by the general danger symbol:
Warnings from electrical causes by the special sym-
bol:
Safety references which, if not complied with, may
result in damage to the plant or its functions are
marked by the word
ATTENTION!
2.2 Trade qualifications
Only suitably qualified personnel may work on this
equipment.
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2.3 Hazards arising from non-compliance
with safety notes
Non-compliance with safety notes may cause bodily
harm to persons or damage to the pump/plant.
Failure to comply with safety notes may invalidate any
damage claims.
Non-compliance may, for example, lead to the follow-
ing hazardous consequences:
– failure of vital pump/plant functions,
– hazards to persons due to electrical and/or mecha-
nical causes.
2.4 Safety notes for the Operator
Local regulations regarding the prevention of acci-
dents must be observed.
Hazards from electrical energy must be excluded
(conforming to local or general regulations/standards
such as IEC, BSI, UL, VDE, etc.).
2.5 Safety rules for inspection and installation
works
It is the Operator's responsibility to ensure that in-
spection and installation works are carried out by
authorized and qualified personnel only, after having
made themselves fully conversant with these instruc-
tions.
Work on this plant must on principle be carried out
only with the pump/plant switched off and at com-
plete standstill.
2.6 Arbitrary alterations and spare part
procurement
Any alterations to the plant are only permitted with the
manufacturers' consent. Original and manufacturer
authorized spare parts serve safety. The use of other
parts can invalidate any claims for consequential
damages.
2.7 Non-permissible operating conditions
Operational safety of the plant is conditional on it
being used in accordance with Chapter 1 of the ope-
rating instructions. Operational criteria must not
exceed or fall short of the limits stated in catalo-
gue/data sheets.
3. Preparatory work
– Switch-off plant and secure against unauthorized
switching.
– Close suction and discharge isolating valves,
– remove thermal insulation moulds,
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