Wilo Stratos ECO 30/1-3 Einbau- Und Betriebsanleitung Seite 30

10 Problems, causes and remedies
Pump is switched-on but does not run:
• check electrical fuses,
• check voltage available at the pump (note nameplate data),
• Locked rotor:
• switch off pump,
WARNING! Risk of scalding!
Depending on fluid temperature and system pressure there
is the possibility of hot water in liquid or gaseous state
suddenly erupting under great force when opening the
vent plug. Note the severe danger of scalding!
• close isolating valves at both pump ports and let pump cool
down. Remove vent plug, check freedom of rotation and re-
lock pump rotor by turning the shaft at its slotted end with
the aid of a screwdriver
• switch on pump.
• Should the blockage not be automatically resolved via the
automatic deblocking system, please consult the manual
procedural instructions as described above.
Noisy pump operation
• check differential pressure setting and adjust respectively.
• Heating capacity too low, possibilities to increase:
• Stepp-up setpoint value,
• switch off night setback,
To briefly switch off night setback mode (check on control
operations) it is sufficient to just turn the dial button a little.
• On cavitation, increase system pressure within the permissi-
ble limit.
If no solution can be found, please contact your plumbing
and heating specialist or your nearest Wilo Customer Serv-
ice or representative.
Installation and operating instructions Wilo-Stratos ECO
English
27