GE GL317D Instruction Manual page 174

Detail of maintenance operations, continued
SF pressure gas
6
Operating device
Operation counter
08- 2016
Maintenance
Maintenance plan
For a circuit- breaker equipped with a "dial- type" SF
the position of the needle.
Needle position
NOTE: If the intersection is in either the yellow or red zone, without
any particular indication from the electrical contact densimeter, verify
the concordance of different information sources to find the defective
element and then replace it.
Air- vents should be clean, free of dust and unobstructed. If necessary clean
using a solvent.
Make sure that the permanent resistors are working properly by checking that
these give off heat and that there are no overheating marks (a zone notorious
for this).
For thermally controlled resistors, check that energizing and de- energizing
takes place correctly at voltage supply terminals by means of a thermostat
(recommended thermostat temperature: +5_C.
If necessary, change resistors found to be defective.
For the opening damper, if any leak is observed, please contact
Grid Solutions, After- Sales Department, to proceed with any changes
Read indications given by the counter(s) and note these on the inspection
sheet "Maintenance visits".
The number of circuit- breaker operations recorded influences future
maintenance operations.
GE Information
gas densimeter, check
6
Colored area
GREEN
Perform a topping- up
YELLOW
Abnormally low density,
find the origin of the
RED
After- sales Service.
Continued on next page.
Direction
None
operation.
leak and contact
Grid Solutions
L51- 004EN/07
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