DS 19 OPERATION No. DS 211-3 Overhauling a contact breaker. Op. DS 211-3 141
TOOLS
12 Put the fixed contact carriers (10) and (11) in position. Insert a plain washer and a spring washer under the heads
of the screws and tighten provisionally.
13 Put the insulating sleeves (9) in position and the moving contacts (3) and (5) with their springs (4) and (6).
Insert under the current feed for the lower moving contacts (5), the insulator (7) with the edges turned over.
14 It is possible to check the condensers before assembly on the contact breaker. Use a resistance /capacity meter to
check the resistance, the capacity and the insulation of the condenser.
Offer up the lower condenser (2) and fix it with the current feed.
Insert a shake-proof washer under the head of the screw.
Insert under the current feed for the upper moving contact (3), the insulators (8) without the edges turned over.
15 Offer up the upper condenser (1) and fix with the current feed.
Insert a shake-proof washer under the head of the screw.
Fix the earthing supports of the condensers on the body of the contact breaker.
Insert a shake-proof washer under the heads of the screws.
16 Adjust the contacts and bench test the contact breaker (see Op. DS 211-0).
17 Fit the contact breaker cover, insert serrated washers under the heads of the screws.
OVERHAULING A CONTACT BREAKER (with one breaker).
DUCELLIER 3944A or SEV N4-YG.
If any difficulty is experienced with this work, proceed as shown in the ID 19 Repair Manual, operation ID 211-3.
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