3. retain sub-assembly (50) in order to fit
the fixed roller into its casing hole.
2. put the special
key (a) into the
axle of the
mobile roller
s u b - a s s e m b l y
and fit it into the
casing hole.
MC707
5. CHECKING AND MAINTENANCE
5.1. Checking the BLOCSTOP overspeed function
If the BLOCSTOP is released, its operation can be checked as follows:
– Insert the wire rope from the top (control lever) and push until it comes out of the unit.
– Hold the wire rope above the BLOCSTOP. Allow it to free fall. The jaws should operate
and lock onto the wire rope with a travel of less than 10 cm (four inches).
– Repeat this check a minimum of three times.
5.2. Periodic inspection and Maintenance
– Regularly (at least once a year or after 200 hours of operation) the OVERSPEED
BLOCSTOP must be cleaned and generally checked by an authorized repairer.
– Every year
change the roller (items 48 and 50) proceeding as follows:
use special tools
(code 20887):
a = special key
b = guiding axle
50
a
a
a
b
b
48
59
x
b
5.3. Control of the jaws
Although the wear of the clamping jaws of the OVERSPEED BLOCSTOP is minimal, they
must be regularly checked by means of a rod with specified diameter:
for
BSO 500/1000
6 mm
BSO 510
4 mm
BSO 520/1020
7 mm
If the rod is not held by the clamping jaws, they must be replaced by an authorized
repairer.
Use only special clamping jaws, marked with "BSO'.
5.4. Control of the wire rope
If the
wire rope diameter
has reduced by 10% of the rated diameter, the wire rope
must be replaced.
Ø 5.8 for wire rope 6.5 mm
Ø 7.5 for wire rope 8.3 mm
Ø 8.5 for wire rope 9.5 mm
Ø 9 for wire rope 10.2 mm
Never use damaged wire ropes.
*Caution: For BSO 500 series the marking(x) must be on the spring side (as shown in the drawing);
for BSO 1000 series the marking (x) must be on the other side towards the fixed roller (50).
1. put the subassy
with the mobile
roller (48) on the
spring guide tube
(59) and insert
guiding axle (b)
into the tube*.
