ABB eVD4, Installation And Service Instructions Manual

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9.3. Servicing
9.3.1. Breaking devices in general
Should it have been necessary to clean the devices during
the inspections, according to the instructions in par. 9.2.1.,
comply with the following procedure:
• isolate the work area and make it safe, following the safety
regulations specified in the IEC/DIN VDE Standards;
• general cleaning of surfaces:
– dry and eliminate light deposits of dirt with a soft dry
cloth;
– more resistant dirt can be removed using slightly alkaline
domestic type detergent or Rivolta BWR 210 type
detergent;
• cleaning insulating surfaces and conductive parts:
– light dirt: with Rivolta BWR 210 detergent;
– resistant dirt: with cold detergent type 716.
After cleaning, rinse thoroughly with clean water and dry
carefully.
Note
Only use detergents without halogens and never 1.1.1-trichloroethane, trichloro-
ethylene or carbon tetrachloride!
9.3.2. Tripping devices: actuator and transmission system
Circuit-breakers up to 31.5 kA and up to 2500 A
To ensure correct operation of the circuit-breaker, inspection
and maintenance of the tripping devices is recommended
every 10,000 operations. For this purpose, please contact the
ABB Service office.
Complete replacement of the actuator, shock absorber and of
the other transmission system parts (shaft, main levers, safety
rings, etc.) must be carried out after 30,000 operations.
Circuit-breakers up to 40 kA and up to 2500 A
To ensure correct operation of the circuit-breaker, inspection
and maintenance of the tripping devices is recommended
every 10,000 operations. For this purpose, please contact the
ABB Service office.
Complete replacement of the actuator must be carried out
every 10,000 operations.
Complete replacement of the shock absorber and of the other
transmission system parts (shaft, main levers, safety rings,
etc.) must be carried out after 30,000 operations.
Note
Dismantling and replacement of the operating mechanism (trip box) can only be
carried out by ABB personnel or by skilled and specially trained personnel, particu-
larly for the necessary adjustments.
Details regarding servicing
• When required, cut off the power supply to the spring
loading motor and manually release the operating
mechanism spring by closing and opening the circuit-
breaker.
• Replace the parts subjected to mechanical stress or stress
due to particular environmental conditions (contact an ABB
service centre).
Note
These operations can only be carried out by ABB personnel or by skilled and
specially trained personnel.