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Overhaul
Will cause death, serious injury and property damage.
Read instruction manual. All work must be performed with the circuit breaker completely
Introduction
The following procedures along with the troubleshooting charts at the end of this section, provide maintenance personnel with a guide to identifying and correcting possible malfunctions of the type
Circuit-breaker overhaul
Table 5 gives the recommended overhaul schedule for a type
When actual operating conditions are more severe, overhaul periods should occur more frequently. The counter on the front panel of the circuit breaker records the number of operations.
Circuit breaker |
| Number of |
type |
| closings |
|
|
|
| 10,000 | |
|
|
|
Table 5: Overhaul schedule |
|
Replacement at overhaul
The following components are replaced during an overhaul of the circuit breaker, when required:
Vacuum interrupters as determined by
Auxiliary switch
When these parts are changed, locking devices must also be removed and replaced. These include lock washers, retaining rings, retaining clips, spring pins, cotter pins, etc.
1.Replace vacuum interrupters, instructions follow (refer to page 49).
2.
A.Remove two "push on" terminal connections
B.Remove two M4
C.Install replacement solenoids with two M4
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