319011 DD 239844 OTMR D/L FROM BOTH ENDS SAVED TO ANALYSER FOR COMPARISON WITH NEXALA DATA AS REQUESTED.
319010 ME162 COMPLETED AND PUT ON B.PLOWMAN'S DESK FOR APPROVAL BEFORE E-MAILING TO ME162 REPORTS.
319434 DD239??? REPORTED GROUP 1 ISOLATED AS MCOR.
INSPECTED BOTH TM1/2 NO SIGNS OF F/O
NEXALA SHOWING RECENT DIO 2 AND DIU 3 FAULTS INCLUDING LOR 1/2 TRIPPING AND GIU 1, GTO MOTOR 2 FAULT.
CARRIED OUT FULL CHECKS ON GROUP 1 GTO'S/ SNUBBERS OK.
CARRIED OUT T/E TEST OK, BUT WHEN PULSED NO TURN ON VOLTAGE ON TM 2
T11. +54v ON, -180v OFF. T12 +52v. ON, -172v OFF.
T21 +54v. ON. -188v. OFF, T22. +0. v. ON, -144v. OFF
RENEWED GDU 22. RETESTED. STILL THE SAME.
CHECKED VOLTAGES WHILST PULSING AND FOUND TEU 22 NOT GIVING A +25V SIGNAL. RENEWED TEU 22 . RETESTED NOW OK. RESET LOR'S
CHECKED FIELD SWITCH AND FOUND VERY THIN AND BURNT CONTACTS ON M50 CABLE RELATED TIPS (TM 4 ?) RENEWED TIPS.
319010 ME162 COMPLETED AND PUT ON B.PLOWMAN'S DESK FOR APPROVAL BEFORE E-MAILING TO ME162 REPORTS.
319434 DD239??? REPORTED GROUP 1 ISOLATED AS MCOR.
INSPECTED BOTH TM1/2 NO SIGNS OF F/O
NEXALA SHOWING RECENT DIO 2 AND DIU 3 FAULTS INCLUDING LOR 1/2 TRIPPING AND GIU 1, GTO MOTOR 2 FAULT.
CARRIED OUT FULL CHECKS ON GROUP 1 GTO'S/ SNUBBERS OK.
CARRIED OUT T/E TEST OK, BUT WHEN PULSED NO TURN ON VOLTAGE ON TM 2
T11. +54v ON, -180v OFF. T12 +52v. ON, -172v OFF.
T21 +54v. ON. -188v. OFF, T22. +0. v. ON, -144v. OFF
RENEWED GDU 22. RETESTED. STILL THE SAME.
CHECKED VOLTAGES WHILST PULSING AND FOUND TEU 22 NOT GIVING A +25V SIGNAL. RENEWED TEU 22 . RETESTED NOW OK. RESET LOR'S
CHECKED FIELD SWITCH AND FOUND VERY THIN AND BURNT CONTACTS ON M50 CABLE RELATED TIPS (TM 4 ?) RENEWED TIPS.