GE GL317D Instruction Manual page 171

Maintenance operations
Guide
08- 2016
Maintenance
Maintenance plan
The table below is a guide of the operations to be carried out at each
maintenance stage:
(M1) MAINTENANCE VISITS (1 or 2 times a year)
(M2) INSPECTION (every 5 years)
(M4) OVERHAUL (OPERATING TIME: 20 years)
(M4) OVERHAUL (MECHANICAL OPERATIONS: 3 000
cycles)
(M4) OVERHAUL (ELECTRICAL WEAR: see
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GE Information
"Electrical wear limits")
Operation counter reading.
Overall inspection:
paintwork, signs of overheating).
Check operation of permanent heating. Check
condition of air vents.
If the circuit- breaker is fitted with an SF
densimeter or a pressure gauge, check SF
pressure (or SF +CF
6 4
It is advisable to perform at least 2 CO duty cycles
per year, when apparatus are scarcely used, in
order to check that circuit- breaker and associated
control circuits are working properly.
Check SF densimeter thresholds. Then adjust
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pressure to its rated value.
Check tightening of parts not subjected to pressure
(frame - deck - cubicle).
Check tightening of low voltage terminals (
months after commissioning).
Check relay operation.
Change door seal, side panels seal and roof seal.
Measure operating times for poles and auxiliary
contacts.
Carry out operations at recommended duties and
rated voltage.
Change (or recondition) interrupting chambers.
Check that the damper piston for the opening of the
control presents no oil leak.
appearance (corrosion,
dial
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gas mixture).
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Continued on next page.
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