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OPERATOR'S SAFETY SUMMARY
Refer all servicing to qualified service personnel
To maintain and to ensure safe operation, observe the following instructions, symbols and precautions.
1. When the unit is to be permanently cabled, first connect protective ground conductor before making any
other connections.
2. Built-in units should only be operated when properly fitted into the system.
3. For permanently cabled units without built-in fuses, automatic switches or similar protective facilities, the
AC supply line shall be fitted with fuses rated to the units.
4. Before switching on the unit, ensure that the operating voltage set at the unit matches the line voltage.
If a different operating voltage is to be set, use a fuse with appropriate rating.
5. Units of Protection Class I with disconnectable AC supply cable and plug may only be operated from a
power socket with protective ground contact.
a. The protective ground connection should not be made ineffective by an extension cable.
b. Any breaking of the protective ground conductor within or outside of the unit or loosening of the pro-
tective ground connection may cause the unit to become electrically hazardous.
c. The protective ground conductor shall not be interrupted intentionally.
6. Before opening the unit, isolate it from the AC supply.
a. Adjustments and replacement of parts as well as maintenance and repair should be carried out only
by qualified personnel.
b. Observe safety regulations and rules for the prevention of accidents.
c. Use only original parts for replacing parts relevant to safety (e.g. power on/off switches, power trans-
formers or fuses).
7. Operator replaceable fuses may be hazardous live. When replacing fuse, turn unit off by isolating it from
the AC supply.
8. Also observe the additional safety instructions specified in this manual.
Explanation of Symbols Used
Read Operator's Handbook and Service Manual; observe the safety symbols used.
Caution, shock hazard
Protective ground connection
Unit ground
Equipotentiality
Ground
Use of Cleaning Solvents
Cleaning of the equipment with isopropyl alcohol or similar solvents may cause degradation of labels. Use
caution when cleaning so that labels are not removed.
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