Instructions

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14. MAINTENANCE AND CLEANING
• Unplug the product from the power source.
• Apart from an occasional cleaning or exchanging the fuse, this laboratory power unit is
maintenance free.
• Use a clean, lint-free, antistatic and dry cloth to clean the device. Do not use any abrasive or
chemical agents or detergents containing solvents.
Exchanging the fuse
If it is no longer possible to switch on the laboratory power unit, the rear mains fuse (12) is probably
defective.
Proceed as follows to replace the mains fuse:
1. Switch off the power unit and remove all the
connection cables and the mains plug from the
device.
2. Lever the rear fuse holder (12) with a suitable
screwdriver from the bracket.
3. Replace the defective fuse with a new ne-wire
fuse (5 x 20 mm) of the same type and rated
current. The fuse value is listed in the chapter
on “Technical Data”.
4. Press the fuse into the fuse holder.
Fuses are replacement parts and not covered by the warranty/guarantee.
15. TROUBLESHOOTING
By purchasing the laboratory power unit, you have acquired a product that is reliable and operationally
safe.
Nevertheless, problems or errors may occur.
For this reason we want to describe how to troubleshoot potential malfunctions:
Always follow the safety instructions!
Error Possible cause
The power unit cannot be
switched on.
• Does the operating display (1) on the power unit light up?
• Check the mains voltage (you may also want to check the
mains fuse in the device or the line circuit breaker).