Dcpm And Ehpm

Question 1

What 2 levers does a dual control point machine have?

Answer 1

Selector lever
Hand throw

Question 2

What are the two positions of the selector lever?

Answer 2

Hand and motor

Question 3

What is the purpose of the motor position?

Answer 3

Provide signaller remote control of the points and signals
Prevent manual operation

Question 4

What is the purpose of the selector lever in hand position?

Answer 4

Prevent remote control or operation of points in event of a failure
Protect the train by holding signals governing movement of points at stop pos

Question 5

What are two positions of hand throw lever?

Answer 5

Normal and reverse

Question 6

If points are required for a movement in normal what is the sequence?

Answer 6

N>r>n
Or
r>n>r>n

Question 7

If points require moevement for reverse what is the sequence?

Answer 7

R>n>r>n
Or
R>n>r

Question 8

Can a driver operate hand locking bars?

Answer 8

Yes

Question 9

What are the components are under the lid of the electro-hydraulic point machines?

Answer 9

Instructions
Power/manual switch
Red directional lever
Pump handle socket with pump lever or retractable handle

Question 10

What is the purpose of the power and manual switch?

Answer 10

Power- allows remote control of points
Manual- holds all fixed signals controlling movements to danger and allows manual operation of points

Question 11

What are the 3 positions of the red directional control lever?

Answer 11

Normal
Centre
Reverse

Question 12

What is the purpose of pump handle?

Answer 12

Is to pump the points until they are lying in required positions n or r

Question 13

After ehpm have been manually operated can the driver set them back to power?

Answer 13

No