Maintenance/Repair; Personnel Qualifications; Operation Monitoring - Wilo Atmos GIGA-N Mode D'emploi

9

Maintenance/repair

9.1

Personnel qualifications

9.2

Operation monitoring

Installation and operating instructions Wilo-Atmos GIGA-N
Maintenance/repair
It is recommended to have the pump serviced and checked by the Wilo customer ser-
vice.
Maintenance and repair work require the pump be partially or completely dismantled.
The pump housing can be installed in the piping.
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric
shock!
• Any work on electrical devices may only be carried out by a qualified electrician.
• Before all work on the unit, deactivate the power supply and guard against acci-
dental switch-on.
• Any damage to the pump connection cable should only ever be rectified by a
qualified electrician.
• Observe the installation and operating instructions for the pump, motor and
other accessories.
• Reinstall any uninstalled safety devices, such as terminal box covers, once the
work is complete.
WARNING
Sharp edges on the impeller!
Sharp edges can form on the impeller. There is danger of limbs being severed! Pro-
tective gloves must be worn to protect against cuts.
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Maintenance tasks: The technician must be familiar with the use of operating fluids and
their disposal. In addition, the technician must have basic knowledge of mechanical en-
gineering.
CAUTION
Risk of property damage!
Improper operation can damage the pump or motor. Operating with the shut-off
device closed for more than 5 minutes is not recommended and generally dangerous
in the case of hot fluids.
• Never allow the pump to run without fluid.
• Do not operate the pump with the shut-off device in the suction line closed.
• Do not operate the pump for a longer period of time with the shut-off device in
the pressure pipe closed. This can cause the fluid to overheat.
The pump must run quietly and vibration-free at all times.
The roller bearings must run quietly and vibration-free at all times.
Increased current consumption with unchanged operating conditions is a sign of bear-
ing damage. The bearing temperature may be up to 50°C above the ambient temper-
ature, but never rise above 80°C.
▪ Check the static gaskets and the shaft seal regularly for leakages.
▪ For pumps with mechanical seals, there is little to no visible leakage during operation. If
a gasket is leaking significantly, this is a sign that the gasket surfaces are worn. The
gasket must be replaced. The service life of a mechanical seal greatly depends on the
operating conditions (temperature, pressure, fluid properties).
▪ Wilo recommends checking the flexible coupling elements regularly and replacing them
at the first sign of wear.
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