33
A7.1 Inspections
A7.1.1 DAILY INSPECTIONS
EACH DAY
PRIOR TO USE
AND DURING OPERATION
CHECK:
(1)
Primary brake function
:
“click” noise, when starting/stopping the hoist.
(2)
blocstop BS/BSO secondary brake function
.
I
At ground level or on a safe surface push
DOWN button to get slack in the primary wire
rope: release lever (e3) tilts to the side to close
BS/BSO secondary brake on the secondary
wire rope (Fig. 54).
With gloved hands try to pull the secondary wire
rope upwards: it
must be impossible
.
II
At ground level
fi
rst close the BSO secondary
brake by pushing emergency stop button (d2).
Then push Control lever in DOWN-position and
make the wire rope form a loop between tirak
™
casing and BSO secondary brake (Fig. 55). Open
BSO secondary brake by pulling down control
lever (d1) until it locks in the open position.
Push release lever (e3) in its upright position
and with gloved hands sharply pull wire rope in
arrow direction (Fig. 54) – the BS/BSO sec-
ondary brake should close immediately (Fig.
56).
Reset BS/BSO secondary brake by pushing
down control lever (e1) until it locks in the open
position.
III
Lift platform 3 ft. (1 m) above ground or safe sur-
face, and push EMERGENCY STOP button (e2)
of the BS/BSO secondary brake (Fig. 56).
Lower the platform to check that the BS/BSO
secondary brake holds the load. A loop should
form as shown in Fig. 55, which means the
BS/BSO is supporting the load.
Raise platform until the hoist supports the load.
Reset (e1) to the open position.
IV
During operation regularly check through the
window (e4) that the centrifugal weights are
rotating (Fig. 56).
(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.
Figure 54
BS/BSO Secondary
Brake
Check I
Figure 56
BS/BSO Secondary Brake
Check III / IV
Figure 55
BS/BSO Secondary
Brake
Check II
Primary wire
rope loop
(e1)
Closed
(e1) OPEN
Primary
wire rope
(e3)
(Secondary wire
rope)
(e1)
Open
(e1) CLOSED
(e2) EMERGENCY
STOP
(e4)
Window
Secondary
wire rope
Slack primary
wire rope
(e3)
(e2) EMERGENCY
STOP
(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.
