KSB Calio-Therm S NC, Installation & Operating Manual

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7 Servicing/Maintenance
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Calio-Therm S NC/NCV
7 Servicing/Maintenance
7.1 Maintenance/inspection
The circulators are almost maintenance-free.
If the pump has not been in operation for a prolonged period of time or if the
system is severely contaminated, the rotor can become blocked.
Remove the pump head (loosen the union nut and take off pump head) to access and
remove the impeller. After the pump head has been removed, tighten the union nut
to a tightening torque of 30 Nm with a belt wrench.
Fig. 9:
Belt wrench for tightening the union nut
This allows unblocking the rotor and/or cleaning the pump.
NOTE
Any repairs on the pump must only be performed by one of our authorised service
partners.
In the event of a failure, please contact your heating system engineer.
7.2 Drainage/cleaning
WARNING
Fluids, consumables and supplies which are hot and/or pose a health hazard
Hazard to persons and the environment!
▷ Collect and properly dispose of flushing fluid and any residues of the fluid
handled.
▷ Wear safety clothing and a protective mask if required.
▷
Observe all legal regulations on the disposal of fluids posing a health hazard.
1.
Always flush and clean the pump before transporting it to the workshop.
Provide a cleaning record for the pump.
7.3 Removing the pump set from the piping
7.3.1 Removing the complete pump set from the piping
DANGER
Electrical connection work by unqualified personnel
Risk of fatal injury due to electric shock!
▷
Always have the electrical connections installed by a trained and qualified
electrician.
▷ Observe regulations IEC 60364 and, for explosion-proof models,
EN 60079
.