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/ 46
8
•
Maintenance and servicing
801
16-
443
10.
16
User manual and visual inspections
•
Test specimen and accessories (where enclosed) undamaged exter-
nally.
•
User manual present.
•
All labels on the test specimen (conformity declaration mark, rating
plate, and all wording) present and readily legible.
Electrical safety checks
List of checks
The individual checks comprise:
•
Ground terminal to chassis.
•
Ground terminal to potential equalization pin.
•
Measurement of the unit leakage current.
Performance tests
Test setup
•
The test specimen is connected to the power supply via the power
cord.
Test procedure
Power switch
1. Check power switch for smooth operation. The power switch must be
easy to operate and must neither stick nor scrape.
2. Press power switch. The power switch must snap into the "ON" posi-
tion and the test specimen must perform a system start.
Control buttons
1. Check the function of all control panel buttons. Press each button at
least twice.
7-segment displays and LEDs
1. When starting the system, all 7-segment displays and LEDs must
briefly light up at the same intensity.
IMPORTANT!
Electrical safety is verified in accordance with the national specifica-
tions and regulations.
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