Safeworking - Electro-Hydraulic Point Machines Flashcards
1
Q
What is the purpose of an Electro-Hydraulic Point Machine?
A
- Enable points to be controlled either Remotely or by a Signaller
- In case of failure, be operated by a Driver/Competent Worker acting under instructions of the Signaller/Train Controller
2
Q
What are the 3 components of a EHPM?
A
- POWER/MANUAL switch
- RED DIRECTIONAL Control lever
- PUMP HANDLE SOCKET WITH PUMP HANDLE
3
Q
What are the 2 positions of the POWER/MANUAL Switch?
A
- POWER - Allows REMOTE operation of the points for normal running of trains
- MANUAL - Holds applicable Fixed Signals at DANGER and allows manual operation of points
4
Q
What are the 3 positions of the DIRECTIONAL CONTROL LEVER?
A
- Normal
- Centre
- Reverse
5
Q
When operating the PUMP HANDLE the DIRECTIONAL CONTROL LEVER must be?
A
Held in position
6
Q
What is the purpose of the DIRECTIONAL CONTROL LEVER?
A
To select the direction of the points
7
Q
What is the purpose of the PUMP HANDLE?
A
To pump the points until they are lying in the required position and fully HOME AND LOCKED
8
Q
Who may remove a Locking Bar or Point Clip and restore the POWER/MANUAL Switch to the POWER position?
A
Signal Maintenance Technician