22
NOT RIGGED
and used, the BS/BSO sec-
ondary brake functions the same as a BSO
secondary brake, and
THIS SECTION IS NO
LONGER APPLICABLE.
TABLE OF CONTENTS
of
ADDITIONAL INSTRUCTIONS
A2. DESCRIPTION
A2.1 Two wire rope System
..........................................
22
A2.2
Secondary
Brake
.................................................
22
A2.3
Wire
Ropes
..........................................................
23
A2.7
Technical
Data
.....................................................
24
A3. RIGGING INSTRUCTIONS
A3.1
General
A3.1.1
Scope
........................................................25
A3.1.2 Checks before rigging ...............................25
A4. WIRE ROPE
A4.2 Wire Rope Rigging Instructions .............................26
A4.3 Wire Rope Reeving ...............................................27
A4.4
De-rigging
.............................................................29
A5. OPERATING INSTRUCTIONS
A5.1
General
.....................................................................29
A5.3
Emergency
Descent
.................................................30
A5.4
Secondary
Brake
Action
..........................................
31
A6. TROUBLE SHOOTING
A6.4 BS/BSO Secondary Brake .......................................32
A7. INSPECTIONS and MAINTENANCE
.................
32
A7.1
Inspections
A7.1.1
Daily
Inspections
.........................................
33
A7.2
Maintenance
A7.2.1
tirak
™
Hoist
..................................................
34
A7.2.2
Wire
Ropes
..................................................34
A7.2.3
blocstop
™
BS/BSO Secondary Brake ...........34
INTRODUCTION
1. GENERAL WARNING
(See pages 3 to 5)
A2. DESCRIPTION
A2.1 Two wire rope System
tirak
™
hoists (A) with blocstop
™
BS/BSO over-
speed and slack wire rope locking device (E) – here-after
called BS/BSO secondary brake – are principally used
with
two wire ropes
(see Fig. 33):
– The
tirak
™
hoist goes up and down the
primary wire
rope (P)
.
– The BS/BSO secondary brake works on both the
primary wire rope
(P)
and the
secondary wire rope
(S)
as described below.
A2.2 Secondary Brake
In case of accelerating overspeed the blocstop
™
BS/BSO
secondary brake stops the descent immediately
on the
primary wire rope (P)
.
In case of slack primary wire rope or primary wire rope
failure BS/BSO secondary brake stops the descent by
immediately locking
on the secondary wire rope (S)
.
THE SECONDARY BRAKE MUST ALWAYS BE AT-
TACHED AND USED.
NOTE: IF
for any reason a
SECONDARY ROPE IS
