Running clearances

• Pages: 85-85

B7. Running clearances

B7.1. Clearance between car sill and edge of the serving level

of an open landing door

B7. 1.1.When the car is stationary at a landing the clearance

between the car sill and the edge of the serving level of an open

landing door should not exceed l'/4in. (35mm)

B7.2. Clearance between counterweight and well

B7.2.l (1) When the counterweight is guided by ropes or

steel wires, the clearance between the counterweight and the wall

of the well, measured at the closest point, should not be less than

2in. (5cm).

(2) To meet the above requirement it will be necessary to

provide, at the general layout stage, for a clearance exceeding

2in. by an amount proportionate to the distance between the

brackets.

B7.3. Clearance between moving parts of a single lift1

B7.3.1. When the counterweight is guided by ropes or steel

wires, the clearance between moving parts of a single lift, measured

at the closest point, should not be less than 23/4in. (7cm).

B7.3.2. To meet the above requirement it will be necessary

to provide, at the general layout stage, for a clearance exceeding

23/4in. by an amount proportionate to the distance between the

brackets.

1 For the case of multiple lifts in a single well see B1.6.

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