Wilo Rexa CUT, Installation And Operating Instructions Manual

Page: 50 / 384

50 WILO SE 11-2014 V05 DIN A4
English MAINTENANCE AND REPAIR
7.3.2. Stationary wet well installation
Pumps in stationary wet well installations with
a suspension unit are raised out of the pump
chamber using the appropriate lifting equipment.
During lifting, always hold the power supply cable
slightly taut to prevent it being damaged.
The operating space does not have to be emptied
especially for this purpose. All pressure- and suc-
tion-side slide valves must be closed to prevent
the operating space overflowing or the discharge
pipe being emptied.
7.4. Return delivery/storage
For shipping, the parts must be packed in tear-
proof plastic bags of sufficient size in such a
manner that they are tightly sealed and leak-
proof.
For return delivery and storage please also refer
to the “Transport and storage” section!
7.5. Disposal
7.5.1. Operating materials
Oils and lubricants must be collected in appropri-
ate containers and properly disposed of in terms
of EC Directive 75/439/EEC as well as in compli -
ance with the provisions of sections 5a and 5b
of the German Waste Act or the applicable local
laws.
7.5.2. Protective clothing
Protective clothing worn for cleaning and main-
tenance work is to be disposed of in accordance
with the German Waste Code TA 524 02 and EC
Directive 91/689/EEC.
7.5.3. Product
Proper disposal of this product avoids damage to
the environment and risks to personal health.
• Use the services of public or private waste dis-
posal companies, or consult them for the disposal
of the product or parts thereof.
• For more information on proper disposal, please
contact your local council or waste disposal office
or the supplier from whom you purchased the
product.
8. Maintenance and repair
ELECTROCUTION hazard!
There is a risk of fatal electric shocks when
performing work on electrical devices. With
all maintenance or repair work, the pump
must be disconnected from the mains and
secured against being switched on again
without permission. Damage to the power
supply cable may only be rectified by a quali -
fied electrician.
UNAUTHORISED work could result in fatal
injuries!
Maintenance and repair work that impairs the
safety of Ex protection must only be carried
out by the manufacturer or authorised service
workshops.
Also note the additional information in the
appendix!
• Before any maintenance or repair work, the pump
must be deactivated and dismantled as described
in the "Decommissioning/disposal" chapter.
• After maintenance or repair work, the pump must
be installed and connected as described in the
"Installation" chapter.
• The pump is switched on as described in the
"Commissioning" chapter.
Note the following:
• All maintenance and repair work must be carried
out by Wilo customer service, authorised service
workshops or trained specialists with the greatest
of care and in a safe workplace. Proper protective
clothing is to be worn.
• This manual must be available to and observed
by the maintenance staff. Only maintenance
and repair work described in this manual may be
carried out.
Any other work and/or alterations to the
construction must only be carried out by Wilo
customer service.
• When carrying out work in basins and/or tanks,
the respective local protection measures must be
observed in all cases. A second person must be
present for safety reasons.
• Only lifting equipment that is in a technically
perfect condition and load-carrying equipment
that has been officially approved may be used for
lowering and raising the pump. Make sure that the
pump does not jam during lifting and lowering.
If the pump does jam, no lifting forces greater
than 1.2 times the pump weight must be applied.
The maximum permissible bearing capacity must
never be exceeded!
Make sure that the lifting gear, ropes and the
lifting equipment's safety devices are in perfect
working order. Work may only commence if
the lifting equipment has been checked and
found to be in perfect working order. If it is not
inspected, fatal injuries may result.
• Electrical work on the pump and the system must
be carried out by a qualified electrician. Defective
fuses must be replaced immediately. They must
never be repaired. Only fuses for the specified
electric current and of the specified type may be
used.
• If flammable solvents and cleaning agents are
used, naked flames and smoking are prohibited.
• Pumps that circulate fluids that are hazardous to
health or come into contact with such fluids must
be decontaminated. In addition, make sure that
no gases that are hazardous to health form or are
present.