(1) Governor shall be placed where it is not struck by the Lift car or counter weight in the event of over run.
(2) Governors for car safety gears shall be adjusted to actuate the safety gear at the following speeds:
(i) For rated speeds up to 1 Meter per second maximum governor tripping speed shall be either 140 percent of rated speed or 0.88 meter per second, whichever is higher.
22 THEKOLKATAGAZETIE,EXTRAORDINARY, NOVEMBER 11, 2022 [PARrI
(ii) For rated speed above 1 meter per second, maximum governor tripping speed shall be 115 percent of the rated speed plus 0.25 meter per second;
(iii) Minimum governor tripping speed shall be 115 percent ofthe rated speed.
(3) Each governor shall be marked with its tripping speed in meters per second.
(4) Where safety device other than the instantaneous type are provided, a switch, operated by the over speed action of the governor, shall be provided on it to open the motor control and brake control circuits at the following speeds before or at the time the governor trips:
(i) In the down direction at not more than 90 percent ofthe speed at which the governor is set to trip in the down direction, and
(ii) In the up direction at not more than 100 percent of the speed at which the governor is set to trip in the down direction;
(5) Governor ropes shall be not less than 6 millimeters in diameter and shall be ofiron, steel or phosphor bronze and ofsuitable construction. When replacement of original governor ropes becomes necessary, these shall be normally of the same size, material and capacity as the ropes originally supplied by the makers of the Lift.
Before replacement by any other kind ofrope, the suitability ofsuch rope shall be tested to the satisfaction of the Chief Inspector.
(6) Governor ropes shall run clear ofthe governor jaws during normal operation ofthe Lift.
(7) The area of contact made by the governor rope and the governor sheave shall, in conjunction with the rope tension device, provide sufficient tractive effort to cause proper operation of the governor.
(8) Governor jaws and their mounting shall be so designed that any cutting, tearing or deformation ofthe rope resulting from their application shall not prevent proper operation ofthe safety gear.
(9) Governor gears should have self-lubricating bearings which do not require frequent attention.
(I 0) The motor control circuit and the brake control circuit shall be opened before or at the time the governor trips.