Troubleshooting; Taking Out Of Service - Lowara SM30 BSETF3 Programmierhandbuch

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12 TROUBLESHOOTING

Maintenance and repair operations must be carried out by qualified personnel.
Before doing any work on the set, disconnect the electric power supply and ensure that there
are no hydraulic components under pressure.
Fault
1. Board off
2. Frequent
starting and
stopping
3. DIFFERENT
SENSORS
4. FLASH
INIT.ERROR/
F.RAM
INIT.ERROR

13 TAKING OUT OF SERVICE

Respect the regulations and laws in force for waste disposal, also for the packaging.
56
Cause
1. Electric power supply
disconnected
2. Fuse burnt out in panel
1. Incorrect programming.
2. Incorrect adjustment of pressure
switch or sensor thresholds.
1. Different sensors connected to
AI1 and AI2.
1. Data loss errors in the internal
memories of the board.
Remedy
Connect power supply
Check the 24 Vac supply voltage in the
electric panel, downstream from the
transformer of the auxiliaries.
Replace burnt-out fuse.
Program the start/stop values.
Check timing.
Increase the differential pressure or the
stop pressure.
Check that, with FEEDBACK set on
AI1/AI2, the pressure/level sensors
connected to AI1 and AI2 are of the
same type and the values read are
congruent.
Reprogram the parameter values
congruent with the type of system.