Type B Vital Relays - Alstom

Corrective Maintenance
Table 6–2. B Relay Removal and Replacement Procedure (Cont.)
Step
Procedure
4 Check that the replacement relay is correct by verifying that the part number on
the nameplate of relay matches the number on the plugboard registration plate.
Remove nametag from defective relay and install on replacement relay.
REGISTRATION
PLATE NUMBER
NAME
PLATE
NAMETAG
TEST DATA
FORM
5 To replace the B relay, grasp the relay by the top and bottom of the cover; slide
it onto the guide rods.
If adjacent relay prohibits grasping of relay on top and bottom, use the handle
on the front to push the relay along the guides.
P1457, Rev. Nov/07 6–3 Alstom Signaling Inc.