Safety
2.2.2 Operator’s obligations
Safety-conscious operation
• Only operate the pump if it is in perfect technical condition
and only use it as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Ensure that the following safety aspects are observed and
monitored:
– Adherence to intended use
– Statutory or other safety and accident-prevention reg-
ulations
– Safety regulations governing the handling of haz-
ardous substances
– Applicable standards and guidelines in the country
where the pump is operated
• Make protective equipment available.
Qualified personnel
• Make sure all personnel tasked with work on the pump
have read and understood this manual and all other appli-
cable documents, especially the safety, maintenance and
repair information, before they start any work.
• Organize responsibilities, areas of competence and the
supervision of personnel.
• Make sure that trainee personnel only work on the pump
under supervision of specialist technicians.
• All activities may only be carried out by specialist personnel
with the required qualifications:
Activities Required personnel
qualifications
Mechanical work
(installation, repairs,
maintenance)
Mechanic
Electro-technical work
(electrical installation)
Qualified electrician
All other work
Instruction from operator
Safety equipment
• Provide the following safety equipment and verify its func-
tionality:
– For hot, cold and moving parts: on-site safety guards
for the pump
– For possible electrostatic charges: provide the neces-
sary grounding
Warranty
• Obtain the manufacturer’s approval prior to carrying out
any modifications, repairs or alterations during the warranty
period.
• Only use genuine parts or parts that have been approved
by the manufacturer.
Drive system
For pumps delivered without a drive system, comply with the
following requirements for the drive system:
• When using three-phase asynchronous motors, observe
IEC 60034-30-1.
• Power of the drive according to EN ISO 5199 is recom-
mended (EN ISO 5199 also applicable for drives of screw
pumps).
• When using combustion engines, consult Allweiler.
• Use elastic coupling according to DIN 740-2.
• Use coupling guard with the following requirements:
– Fastening elements must be connected to the pump
unit in undetachable design (cannot get lost).
– Safety distances against the reaching of hazardous
areas according to EN ISO 13857 must be complied
with.
2.2.3 Obligations of personnel
• All directions given on the pump must be followed (and kept
legible), e.g. the arrow indicating the sense of rotation and
the markings for fluid connections.
• Pump, coupling guard and components:
– Do not step on them or use as a climbing aid
– Do not use them to support boards, ramps or beams
– Do not use them as a fixing point for winches or sup-
ports
– Do not use them for storing paper or similar materials
– Do not use hot pump or motor components as a heating
point
– Do not de-ice using gas burners or similar tools
• Do not remove the safety guarding for hot, cold or moving
parts during operation.
• If necessary, protective equipment that is appropriate for
the respective assignment must be used:
–Helmet
– Safety shoes
– Safety goggles
– Gloves (min. protection class 3/C)
– Other protective equipment depending on the
(pumped) liquid
• Only carry out work on the pump while it is not runnin
g.
• Isolate the motor from its supply voltage and secure it
against being switched back on again before all assembly
and maintenance work.
• Reinstall the safety equipment on the pump as required by
regulations after any work on the pump.
2.3 Specific hazards
2.3.1 Explosion-hazard area
• (→ ATEX additional instructions).
8 NT series BA-2021.04 en-US 161-295/E
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