User guide

42 Design and specifications are subject to change without notice S47183e rev.03 2010-06-07
6.2 List of maintenance works
TYPE OF THE WORK BY WHOM WHEN REQUIRED RECOMMENDATIONS
A. Arc chute changing -Customer
-Trained technician
As a result of the inspection C
B. Arcing contact and arc
runners changing
-Customer
-Trained technician
As a result of the inspection C Replace complete arcing set.
C. Protective walls changing -Customer
-Trained technician
As a result of the inspection C
D. Adjustment of the
contacts
-GE Service Engr As a result of the inspection C Only when replacement of the arcing
contact results with incorrect gaps.
See point 6.1.5.
E. Replacement of the
control board
-Customer
-Trained technician
As a result of the inspection B,E
F. Adjustment of the
mechanism
-GE Service Engr As a result of the inspection B,E
G. Flexband or fixed contact
changing
-GE Service Engr As a result of the inspection C,E
H. Mechanism changing -GE Service Engr As a result of the inspection B,E
I. Dumper(s) changing -GE Service Engr As a result of the inspection E Replace upper and lower dumper at
the same time.
J. Trip unit changing &
adjustment
-GE Service Engr As a result of the inspection B,E
K. Auxiliary contacts
adjustment and changing
-Customer
-Trained technician
As a result of the inspection B,E In case of improper operation of the
switches, adjustment might be
necessary.
L. Drive changing -GE Service Engr As a result of the inspection B,E
M. Accessories changing -GE Service Engr As a result of the inspection B,E
Table 4
Required tools:
• Cleaning tissue
• Pocket lamp
• Hand lever
• Hexagon wrench SW 4, SW 5, SW 6
• Screw wrench SW 10, SW 13
• Torx® wrench size 30, 40 and 45
• Small and medium screwdriver
• Pliers
• Wire cutter
• File
• Steel brush
Safety hints:
Securing against falling parts
Hint 1 Place a cloth into the lower area of the arcing
contact [Fig. a]. Remember to secure the closing drive
according to Hint 3.
Fig. a Protecting of the arcing area against falling parts
Maintenance with zero voltage release
Hint 2 If an optional zero voltage release is installed, it
must be energized to enable closing of the breaker. Only
then maintenance of the arcing contacts is possible.
Hint 3
To prevent the risk of injury, it is recommended
to secure the breaker in the closed position with a simple
mechanical interlock device [Fig. b]. A piece of tubing
having ~50 mm [~2 in] length and inner diameter of
minimum 14 mm [0,55 in] works well. The outer diameter
of the locking rod shall be less 8 mm [0,3 in]. GE does not
offer this locking device.
Fig. b Securing closing drive against opening