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Type B Vital Relays - Alstom

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Corrective Maintenance<br />

Table 6–13. Microchron II Timer Electronics Replacement Procedure (Cont.)<br />

Step<br />

Procedure<br />

8 Check for correct operation of the relay.<br />

NOTE<br />

If the relay completes its cycle (showing steady red LED during<br />

cycle) and then the green LED starts blinking but the relay does<br />

not pick, check the relay coil connections.<br />

9 Install the relay cover and seal the relay.<br />

P1457, Rev. Nov/07 6–28 <strong>Alstom</strong> Signaling Inc.

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