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
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2
Q

What are the 3 components of a EHPM?

A
  • POWER/MANUAL switch
  • RED DIRECTIONAL Control lever
  • PUMP HANDLE SOCKET WITH PUMP HANDLE
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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
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4
Q

What are the 3 positions of the DIRECTIONAL CONTROL LEVER?

A
  • Normal
  • Centre
  • Reverse
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5
Q

When operating the PUMP HANDLE the DIRECTIONAL CONTROL LEVER must be?

A

Held in position

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6
Q

What is the purpose of the DIRECTIONAL CONTROL LEVER?

A

To select the direction of the points

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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

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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

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