Table of Contents
6.2 List of maintenance works
TYPE OF THE WORK
A. Arc chute changing
B. Pre-arcing contact and
arc runners changing
C. Protective walls chang-
ing
D. Adjustment of the con-
tacts
E. Replacement of the
control board
F. Adjustment of the
mechanism
G. Flexband or fix contact
changing
H. Mechanism changing
I. Dumper(s) changing
J. Trip unit changing & ad-
justment
K. Auxiliary switches ad-
justment and changing
L. Drive changing
M. Accessories changing
Table 4
Required tools:
•
Cleaning tissue
•
Pocket lamp
•
Hand lever
•
Hexagon wrench SW 4, SW 5, SW 6
•
Screw wrench SW 10, SW 13
•
Small and medium screwdriver
•
Pliers
•
Wire cutter
•
File
•
Steel brush
6.2.1 Maintenance of contact system (after 11/2003)
Pay attention to the warnings, Section 1 !
This section is valid for breakers manufactured after
11/2003.
This section refers to maintenance works A, B, C from
Table 4.
A) Remove the arc chute
•
[Fig. 49]. Loosen the clamping screws (3) and (4), using
SW 5 hexagon wrench and take off the arch chute (1)
from the adapter (2).
B) Remove the arc chute adapter
•
[Fig. 48]. For dismantling the arc chute adapter loosen
and pull out the four upright screws (1) using SW5 tool.
Pay attention that no screws or washers fall inside the
breaker !
•
[Fig. 48]. Draw aside and lift off both parings of
adapter (2). Then pull out two protective walls (3).
S47183-e 01/2008
BY WHOM
WHEN REQUIRED
Customer.
As a result of the
Trained technician
inspection C
Customer.
As a result of the
Trained technician
inspection C
Customer.
As a result of the
Trained technician
inspection C
GE.
As a result of the
Service engineer
inspection C
Customer.
As a result of the
Trained technician
inspection B,E
GE.
As a result of the
Service engineer
inspection B,E
GE.
As a result of the
Service engineer
inspection C,E
GE.
As a result of the
Service engineer
inspection B,E
GE.
As a result of the
Service engineer
inspection E
GE.
As a result of the
Service engineer
inspection B,E
Customer.
As a result of the
Trained technician
inspection B,E
GE.
As a result of the
Service engineer
inspection B,E
GE.
As a result of the
Service engineer
inspection B,E
Design and specifications are subject to change without notice
RECOMMENDATIONS
Replace complete pre-arcing set .
Only in case, when replacement of the pre-arcing
contact results with incorrect gaps. See point 6.1.5.
Replace upper and lower dumper at the same
time.
In case of wrong signalization of the switches, ad-
justment might be necessary.
C) Changing the protective walls, arc runners and arcing
contacts
•
[Fig. 48]. Pull out two protective walls (3).
•
[Fig. 50]. Loosen screws (6a) with tool (SW4) and take
out front wall (6).
•
[Fig. 50]. Loosen screw (5a) with tool (SW5) and take
out the front arc runner (5).
•
[Fig. 50]. Take out the back arc runner (4) by loosen
two screws (4a) with tool (SW5). Don't remove the pro-
tective cap (4b).
•
[Fig. 50]. Loosen and take out screw (7) inclusive lock-
ing plate (8). Don't split up screw and locking plate!
•
[Fig. 50]. Pull out axis (9). Pull out pre-arcing contact
(10) and put in new pre-arcing contact.
•
[Fig. 50]. Put in axis (9) and protect it by the locking
plate (8). Tighten screw (7) with torque of 10 Nm
[88lbf*in].
•
[Fig. 50]. Install front-arc runner (5) and back-arc run-
ner (4). Tighten it using torque of 10 Nm [88lbf*in].
•
[Fig. 50]. Install front wall (6) and adjust it by position-
ing the protective wall. Tighten with torque of 10 Nm
[88lbf*in].
•
[Fig. 48]. Put in two protective walls (3).
40
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