Other Cab Operative, Emerg Brake, Safety Loop, VICERS, Battery Charger

Question 1

What happens if 2 keys are in and on?

Answer 1

Safety Loop will open

Emergency brake applies

Question 2

If 2 keys in what do you do?

Answer 2

Cab to cab

Inspect trailing cabs for cleaners keys

If no keys found activate each cab on the way back then deactivate it

If doesn’t work- train stable

Question 3

If the active cab won’t deactivate what do you do?

Answer 3

Need CE to travel in lead cab to operate emergency button as required

Do not exceed 15kmh

No CE - train disabled

In theory train can be driven from any other cab, in reality only from last cab

Question 4

If Emergency brakes apply and won’t release what could be causing it? (11)

Answer 4

Check 110v DC - voltmeter

Trip lowered and reset

MCH not in EMERGENCY

H & F PV SET

Is VICERS activated

EMS IN No. 2

MR above 580

Other can operative light (lamps test)

CB 23Q1, 23Q2 are set

Emergency stop button

All trailing trips raised

Question 5

How do you isolate the Safety Loop?

Answer 5

Break seal on Safety Loop Bypass turret switch

Lift guard

Turn turret switch to Bypass Position and hold

Raise trip

Press auto vigilance button

Also have to isolate VICERS

Question 6

What equipment is not available when Safety Loop is Bypassed? (7)

Answer 6

Trip
Emergency Stop Button
Emergency position of MC
MR pressure switch
Hand & Foot PV
Auto-vigilance Bypass
BP pressure switch

Question 7

When do you use the Auto Vigilance Bypass Switch?

Answer 7

Hand or foot PV becomes defective and emergency brakes not releasing

Question 8

When in Bypass position how often does button flash red?

How long do you have to acknowledge?

Answer 8

Acknowledge every 30 seconds

Push within 10 seconds

Question 9

Which Bypass buttons do you have to isolate VICERS ?

Answer 9

Safety Loop

Auto-vigilance

Question 10

When do you isolate VICERS?

Answer 10

Fault indicator light remains illuminated

Safety Loop Bypassed

Auto-vigilance Bypassed

Abnormal operation of VICERS

Question 11

When overhead is lost how long will VICERS continue to run on battery?

Answer 11

2 minutes

Question 12

How long do batteries provide power for?

Answer 12

1 hour

Question 13

Can batteries be charged from another unit?

Answer 13

No

Batteries confined to one unit

Question 14

How do you rectify a defective battery charger?

Answer 14

Train Stable

If fault light continue in service

If fault light still illuminated remove from service

Question 15

How will you know if battery charger in lead unit has failed?

Answer 15

Voltmeter will show no charge