Page 297 - IRSEM_Main Book

(b) S&T Staff shall not take on themselves the responsibility of disconnecting
the permanent way fittings or making adjustments thereof.
(c) The primarily responsibility of points layout and its allied equipments
binding with the concerned departments who own the equipment/gears.

12.13.3 Damaged Switches and Packing of Sleepers

(a) Advice of switches found chipped or damaged shall be promptly given in
writing to the SSE/JE (P way).

(b) Sleepers under interlocked points and cross overs shall be kept well
packed. Advice of loose packing shall be given promptly to the SSE/JE
(P-Way). When packing of sleepers of interlocked points is being done by
the permanent way staff, signal technician shall also be present there.

12.13.4 Testing and Adjustment

(a) All switches shall be frequently tested to see if they are in correct
adjustment. For testing, the switches shall be moved slowly and it shall be
ensured that-

(i) the switches are set properly against the stock rail, and
(ii) the lever operating the points springs a little, equally in the normal and
the reverse positions before being latched.

(b) When two or more switches are operated by a single lever, all switches
shall be adjusted correctly.

(c) The switches get out of adjustment on account of wear in fittings and pins,
creep of track and poor track maintenance. When the slackness in fittings
becomes excessive, slack fittings shall be replaced. Where creep and
maintenance of track is affecting the adjustment of signalling gear at the
points, it shall be promptly reported to the SSE/JE (P-Way). After
adjustment/replacement of fittings/switches, Obstruction test as per para
12.4.4 shall be done.

Section 14: Maintenance of Facing Point Locks, Switch &
Lock Movements and Spring Point Levers

12.14.1 Facing Point Locks: Facing point lock plunger shall be kept lubricated and free
from rust. The end of the plunger shall be square. It shall be adjusted to be at
least 12 mm clear from the stretcher blades, when the points are unlocked. The
edges of notches in stretcher blades shall be kept square and sharp.

12.14.2 Switch & Lock Movement for existing installations:

(a) All sliding parts of switch and lock movements shall be thoroughly
lubricated.

(b) Switch and lock movements shall be kept adjusted so that the Lockbar shall
rise to two-thirds of its full height before the switch points start to open.

Chapter 12: Installation, Testing & Maintenance of Mechanical Signalling Equipment Page 251 of 535