GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 User Manual

Page 48

Design and specifications are subject to change without notice

S47183De rev.02 2011-03-14

6.2.1 Contact system

Pay attention to the warnings, Section 1!

This section refers to maintenance works A, B, C from

Fig. 6.1

A) Remove the protection caps
 [Fig 48] Remove front and rear arc runner protection caps

(1) by sliding up and out.

 [Fig. 41]. Using SW5 hex wrench, remove front and rear arc

runner screws (2). Remove the six arc chute attachment

screws (3) from front, rear and sides of the adapter (4).

Lift arc chute (5) up and out of the adapter.

B) Remove the arc chute adapter

 [Fig. 49-1]. To dismantle the arc chute adapter, loosen and

pull out the four screws (1) using SW5 tool. Pay attention
that no screws or washers fall inside the breaker!

 [Fig. 49-2]. Draw apart and lift off both halves of the

adapter (2). Then pull out two protective walls (3).

C) Changing the protective walls, arc runners and arcing

contacts
 [Fig. 49-2]. Pull out two protective walls (3).
 [Fig. 50-1 thru 50-4]. Loosen screw (5a) with tool (SW5) and

take out the front arc runner (5).

 [Fig. 50-5]. Take out the back arc runner (4) by loosening

two screws (4a) with tool (SW5). Do not remove the
protective cap (4b) from the arc runner (4).

 [Fig. 50-6]. Loosen and take out screw (7) including locking

plate (8). Do not split up screw and locking plate!

 [Fig. 50-7, 50-8]. Pull out axis pin (9). Pull out arcing contact

(10) and replace with new arcing contact.

 [Fig. 50-6, 50-7]. Replace axis pin (9) and secure it with the

locking plate (8). Tighten screw (7) with torque of 10 Nm

[88 in-lbs].

 [Fig. 50-1 thru 50-5]. Install front-arc runner (5) and back-

arc runner (4). Tighten screws using torque of 10 Nm
[88 in-lbs].

 [Fig. 49-2]. Put in two protective walls (3).

D) Install the adapter

 [Fig. 49-2]. Install two protective walls (3). Use new ones if

necessary. Install two parings of adapter (2) and tighten

screws (1); use 5 Nm [44 in-lbs].

E) Install the arc chute

 [Fig. 41]. Put arc chute (5) into adapter (4).
 [Fig. 41]. Tighten front and backside connections of the arc

runners (2), including lock washer. Use a torque of 10 Nm [88

in-lbs].

 [Fig. 41]. Tighten front, rear and side of the arc chute

connections (3), including flat washers. Use a torque of 5 Nm

[44 in-lbs].

 [Fig. 41]. Put on isolation caps (1).

Fig 48 Removing the arc chute

Fig. 48-1 Protection Cap removal

Fig 48-2 Arc Runner Screws

Fig. 49-1 Removing Adapter screws