Page 300 - IRSEM_Main Book

Section 17: Maintenance of Signal Wire Run (Single Wire)

12.17.1 Alignment: All wire runs shall be maintained in proper level and alignment.

12.17.2 Wires Generally

(a) Damaged wire or wire rope showing signs of corrosion or rusting shall be
renewed. Kinked wire shall be straightened and bad joints removed.

(b) To prevent excessive wear over pulley wheels at one point, the wire shall
be periodically moved and worn out portion shifted off the pulley wheel.

12.17.3 Wires under track: Wires running under the track shall neither drag on the
ground nor rub against ballast, base of rails or side of sleepers.

Section 18: Maintenance of Pulley Stakes and Pulleys

12.18.1 Pulleys and Pulley Stakes

(a) Brackets of pulley wheels shall be examined to see that they are securely
fixed and that the wheels revolve freely.
(b) All damaged, broken and missing pulley wheels or brackets shall be
renewed promptly.

(c) Bent pulley stakes shall be straightened and worn-out ones replaced.

Section 19: Maintenance of Electrical Repeaters and Signal
Lamps/LEDs

12.19.1 The SSE/JE (Signal) shall test the working of the signals fitted with electric
repeaters when making their periodical inspection and see that they are in
proper adjustment.

12.19.2 Examination and Replacement of Signal & Indicator Lamps

(a) All Signals (oil lit and electrically lit) and Point and Trap Indicator lamps shall
be examined regularly and any lamps or founts found defective shall be
replaced promptly. Cases of excessive damage to lamps or neglect in
cleaning shall be reported to the Sr.DSTE or DSTE or ADSTE incharge of the
section. Cleaning of signal lamps is the responsibility of the operating staff.

(b) Overhauling and Repairs: All lamps shall be overhauled once a year
and the date of overhaul marked on each lamp.

(c) Only petty repairs to Signal lamps are to be carried out by SSE/JE
(Signal). Lamps requiring heavy repairs shall be carefully packed and sent
to the Signal Workshops.

Section 20: Maintenance of Double Wire Installations

12.20.1 Transmissions Generally

(a) All transmissions shall work freely and loss of stroke at the end of
transmission shall be avoided.

Chapter 12: Installation, Testing & Maintenance of Mechanical Signalling Equipment Page 254 of 535