Flowserve ER 50-1 - Manual (Page 17)

7
Troubleshooting
Fault finding list
Level has exceeded switchpoint “High Water” – no function
Fault: Mains voltage has not been applied.
Remedy: Apply mains voltage. Wire equipment according to the wiring diagram.
Fault: The electric conductivity is too low.
Remedy: Use level switch with higher response sensitivity (0.5 μS/cm).
Fault: The electrode body does not have earth connection to the boiler.
Remedy: Clean seating surfaces and insert metal joint ring (of stainless steel .430) to 33 x 39 to
DIN 7603. Do not insulate compact system with hemp or PTFE tape!
Level has fallen below switchpoint “Low Water” – no function
Fault: The electrode tips have earth connection.
Remedy: Change installation position.
Fault: The vent hole in the protection tube does not exist, is obstructed or flooded.
Remedy: Check protection tube and, if necessary, provide vent hole.
Fault: The isolating valves of the external measuring pot (optional) are closed.
Remedy: Open isolating valves.
Switchpoint has been reached – incorrect function
Fault: The switching function has not been correctly allocated. Electrode tips have been cut to the
wrong length.
Remedy: Identify electrode supply wire and reconnect accordingly.
If faults occur that are not listed above or cannot be corrected, please contact our service centre or
authorized agency in your country.