DMS 1 & 2 (driving cab)

Question 1

CBACU

Answer 1

Isolates air conditioning unit

Loss of cool air from cooling unit. Fan will still run.

Question 2

CB-GSMR

Answer 2

Isolates GSM-R control panel

Loss of GSM-R.

Question 3

CGB

Answer 3

Isolates main compressor governor

Both main compressors will not run.

Question 4

CSB

Answer 4

Isolates compressor synchronising circuit.

Compressors will run independently (no effect on a single unit).

Question 5

CB

Answer 5

Isolates control circuits (control positive)

Emergency brake application, loss of interlock, BIL lights flashing, GSM-R, WSP (cannot be bypassed using EBS if in leading cab).

Question 6

ECB

Answer 6

Isolates thryistors and motors on that DMS

Loss of speedometer.

Question 7

DCB2

Answer 7

Isolates door control circuits on entire train

No door power, no interlock light, BIL lights illuminated where tripped.

Question 8

BCB

Answer 8

Isolates brake controller

Emergency brake application (if in intermediate cabs, no effect until unit splits)

Question 9

TPWS

Answer 9

Isolates TPWS/AWS systems

Emergency brake application, no AWS or flashing brake demand light on TPWS panel. If unable to reset, use the full TPWS isolation flap and apply relevant rules.

Question 10

HLB

Answer 10

Isolates headlight

Loss of headlight.

Question 11

CH-CB

Answer 11

Isolates cab heat

No heating from cab heater and fan will not work.

Question 12

ALB1

Answer 12

Isolates auxiliary lighting

Loss of internal cab light, destination light, one marker and one tail light.

Question 13

ALB2

Answer 13

Isolates auxiliary lighting

Loss of one tail and one marker light.