Dual Control Point Machines

Question 1

Describe the purpose of dual control point machines?

Answer 1

Enable the points to be operated either remotely by signaller or in case of failure by either a driver or competent employee acting under instructions of the signallers or train controller.

Question 2

What is the purpose of the selective levers “motor” position?

Answer 2

• To provide the signaller remote control of the points and signals
• to prevent manual operation of the points.

Question 3

What is this? And what two positions does it provide?

Answer 3

Hand throw lever
Its two positions are NORMAL and REVERSE.

Question 4

With what are the Selector and Hand Throw levers secured?

Answer 4

5p padlocks

Question 5

Describe the procedure for a Driver to operate the points of a DCPM.

Answer 5

• unlock padlocks
• Switch the selector lever to hand
• pull hand throw lever to reverse and back to normal and then back to reverse again
• Secure in the required position with a padlock.

Question 6

Out of the selector lever and hand throw lever which one is the smallest and which one is the largest?

Answer 6

Selector lever is the smallest and the hand throw lever is the biggest.

Question 7

Who directs the Driver to operate the dual control point machine?

Answer 7

Train controller or controlling signaller

Question 8

Who is authorised to fit a Point Clip?

Answer 8

Competent workers and drivers

Question 9

How is a Hand Locking Bar used?

Answer 9

• remove padlock
• Remove pin
• Flip over hand locking bar to rail
• Insert pin and lock

Question 10

Can a driver be instructed to put the DCPMs back to Motor after use?

Answer 10

Yes.

Question 11

What is the purpose of the selective levers “hand” position?

Answer 11

• To prevent remote control or remote operation of the points in the event of a failure.
• Holds the signals governing movement of the points at the stop position.

Question 12

What is this and what two positions does it have?

Answer 12

Motor and hand

Question 13

What is this and what two positions does it have?

Answer 13

Select Lever
The two positions are : Motor and hand