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REPLACING THE FUSE
MAINTENANCE
b
Repairs and maintenance must be entrusted exclusively to an expert service technician. Before working on the
controller, isolate it from the power supply! Check that there is no power!
b
Use only the spare fuse supplied, or select a similar fuse with the following specifications: 250V and T2A / 250V.
If the controller is connected to the power supply and does not come into operation, or the display remains blank, the
internal fuse could be defective. In this situation, open up the controller, remove the fuse and inspect it. If the fuse is de-
fective, replace it with a new one. Locate the cause of the fault if external (e.g. pump), and repair or replace as necessary.
b
During the course of general maintenance on the system every year, have the functions of the controller checked
by an expert service technician, and the parameters optimised if necessary.
Maintenance operations:
- Check the time and date (see “6.16. Time and date”)
- Assess/check the reliability of analytical data (see “2. Statistics”)
- Assess/check the reliability of current measurement values (see “1. Measurement values”)
- Check outputs/components in manual mode (see “3.2. Manual”)
- If necessary, optimise the setting parameters
Useful notes / tips
- Rather than controlling system flow rate using a flow limiter, it is better to adjust the flow rate using the selector switch on
the pump and the maximum speed setting at the controller (see “6.2.6. maximum speed”). This will save energy!
- Service data (see “8. - Service data”) include not only current measurement values and operating status, but all the con-
troller settings as well. Once programming has been completed successfully, make a note of these service values.
- If there is any doubt as to control response or concerning malfunctions, items of service data are of real help when diag-
nosing system trouble from a remote location. Make a note of service values (see “8. - Service data”) whenever a suspect-
ed malfunction occurs. Send the table with the service data to the supplier or manufacturer by fax or e-mail, including a
brief description of the trouble.
- Given the particular importance of service data, analyses should be run on the system at regular intervals, and logged
so that the information will not be lost.
- Firmware updates are published on www.sorel.de and can be uploaded to the controller from the SD card.
Fuses T2A/250V
Mechanical relays
Electronic relays
Main board
Summary of Contents for SC SUN 300
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