User manual

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7. Entry lock “Keylock”:
(B0h) (S) (R)
S 1: Entry lock active (ON)
0: Entry lock inactive (OFF)
R Reserved (stays on 0h)
8. Reading of the temperature status:
(B1h) (0) (0)
Response: (B1)(S)(0)
S 1 active for excess temperature protection (ON)
0 inactive for excess temperature protection (OFF)
9. Reading of the device ID:
(B2h) (0) (0)
Response:(B2h)(ID)(Ver)
ID: 1 for PSP 1405
2 for PSP 12010
3 for PSP 1803
Ver: software version
Disposal
Old electronic devices are hazardous waste and should not be disposed of in the house-
hold waste. When the device has become unusable, dispose of it in accordance with the
current statutory regulations at the communal collection points. Disposal in the domestic
waste is not permitted.
Maintenance and cleaning
The laboratory power supply units are maintenance-free, apart from the need to replace fuses and
cleaning them once in a while. 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.
Fuse replacement
If it is no longer possible to switch on the power unit, the mains fuse is probably defective.
Proceed as follows to replace the mains fuse:
• Switch off the power unit and remove all the connection and mains cables.
• Twist out the fuse holder on the rear (counter-clockwise, using slight pressure, 1/4 turn).
• Remove the fuse holder and replace the defective fuse with a new fine-wire fuse (5x20 mm) of the
same type and rated current. Insert a new fine fuse of type T3,15/250V (slow-blow).
• Replace the fuse holder and lock it in reverse order.