19
II
Lift platform 3 ft. (1 m) above ground or safe
surface, and push EMERGENCY STOP but-
ton (d2) of the BSO secondary brake (Fig.
29).
Lower the platform to check that
the BSO secondary brake holds the load.
Raise platform until the hoist supports the load.
Reset (d1) to the open position.
III
During operation regularly check through the win-
dow (d3) that the centrifugal weights are rotating
(Fig. 29).
(3)
Wire rope:
free of kinks, cuts, broken wires, bird-
cages, heat damage, contamination etc.
(4)
Wire rope corrosion
due to acid or caustics. Replace
wire rope if exposed to these contaminants.
(5)
Wire rope lubrication:
The wire rope has to be clean
and lightly lubricated.
(6)
Rigging
Wire rope termination, connection to the suspension
system. It must be aligned and secure.
(7) Check for
parts damage
.
WARNING: If there is any:
STOP working, unless the damaged
part(s) is (are) replaced.
(8)
Safety harness(es), lifeline(s), fall arrester(s)
and lanyard(s) must be used at all times
in accord-
ance with the requirements of OSHA regulations and
state, provincial or local codes.
Figure 29
BSO Secondary Brake
Check II + III
(d1) Open
EMERGENCY
STOP (d2)
(d1) CLOSED
(d3) Window
7.1.2 MONTHLY INSPECTIONS
(1) All items under daily inspection.
(2) Wire Rope Inspection
All wire rope should be inspected once a month, and a
signed and dated inspection record
maintained.
The inspection check list at back of this manual can be
used to record these inspections.
WIRE ROPE SHOULD BE REPLACED, IF ANY OF THE
FOLLOWING CONDITIONS ARE NOTED:
Conditions for replacing wire rope:
– Broken wires or strands.
– Excessive
corrosion.
– Heat damage, evident through discolored wires.
– Reduction from nominal diameter of more than
5 %.
– Kinking, crushing, birdcaging, or any other distortion
of the wire rope structure (Fig. 30).
NOTE: How to measure wire rope diameter:
The correct diameter of the wire rope is the
largest cross-sectional measurement across the
strands (and not the valleys).
The measurement should be made carefully
with calipers as shown in Fig. 31.
Figure 30 Examples of wire rope damage
WARNING: REPLACEMENT WIRE ROPE MUST BE
SAME SIZE, GRADE, AND CONSTRUC-
TION AS THE WIRE ROPE SPECIFIED
BY THE SUPPLIER! (See pages 7, 11)
THE SUPPLIER DECLINES ALL RESPONSIBILITY FOR
MACHINES USED WITH A WIRE ROPE OTHER THAN
SPECIFIED BY HIM.
Birdcaged wire rope
Crushed wire rope
Wire rope
bent over sharp edge
causing a kink
Loop formation on wire rope
d
“Pig-tail” curl in wire rope
Figure 31 Checking Wire Rope Diameter “d”
