Page 311 - IRSEM_Main Book

12.26.5 Testing by the SSE/JE (Signal)/incharge
(a) The SSE/JE(Signal)/incharge shall test locking against the interlocking
table and do spot checks from the Signalling Plan.

12.26.6 Testing by the DSTE/ADSTE

(a) DSTE/ADSTE shall test locking against the interlocking table as well as
make spot checks from the Signalling Plan.

12.26.7 Instructions for Testing

(a) All levers shall be placed in their normal position before testing is started.
When testing against the interlocking table, levers shall ordinarily be
tested consecutively beginning from lever number-1.

(b) In each case where a lever is released by a combination of other levers, it
is necessary to have all the levers of the group pulled over to test the
back locks, then to put back each lever separately, leaving the other
levers pulled over, to test each individual lock.

(c) Some examples of testing locking are as follows

(i) Warner Signal

 Try the Warner lever. It should be locked.

 Pull over the relative Loop Homes and Outer Levers and also Loop
starters if worked from the same cabin. Try the Warner lever again,
it should be locked.

 Pull over the relative Main Home and Outer levers and try the
Warner lever again. It should be locked.

 Pull over the Main line Starter lever and once more try the Warner
lever. It should be free if there is no other running signal in
advance of the Starter signal.

 After pulling the Warner lever, see if the Outer, the Home and the
Starter signal levers are back locked. If Advanced starter exist then
should be back locked.

 Replace the Warner, the Outer and the Home signal levers, but
leave the starter lever pulled over. Try again to pull the Warner
lever. The Warner lever should be locked.

(ii) Stop Signal

 Set up each route separately, and if the stop signal is released by
another signal (e.g., the Outer by the Home), prove that the
releasing and back locking is correct as in the case of Warner
signal levers.

 See that all conflicting point and signal levers, both in advance and
in rear of the signal under test, are locked.

Chapter 12: Installation, Testing & Maintenance of Mechanical Signalling Equipment Page 265 of 535