7
Maintenance
Observe EN 12056-4 for maintenance.
7.1
Maintenance interval
According to standard specifications, maintenance must be carried out at the following intervals:
1/4-yearly for systems in commercial operations
1/2-yearly for systems in apartment buildings
Yearly for systems in single-family homes
Visual inspection
The system must be checked once every month by the operator through observation of two switching cycles for opera-
tional ability and leak-tightness.
7.2
Pump
Pump and pressure pipe maintenance
NOTICE
Disconnect system from energy sources!
Ensure that the electrical components are dis-
connected from the electrical power supply dur-
ing the work.
Open the cover plate.
Open the one-handed closure on the discharge
socket.
Pull out the pump, complete with pressure pipe, by the
handle.
Check the pump parts for deformation and deposits, con-
tact KESSEL service department if necessary.
Ensure the moving parts can move easily.
Carry out a visual check of the fitting components.
Wipe the float switch down with a damp cloth.
Cleaning/servicing the multi-vane impeller
Remove the spiral housing.
Check the multi-vane impeller for deformation and
deposits.
Remove the multi-vane impeller and clean with a water
bath.
Clear the ventilation pipe.
Assemble the pump again in reverse order.
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