18
6.4 BSO Secondary Brake Troubles
If you cannot
fi
nd a trouble’s cause, contact the supplier.
Problem
Cause
Remed
y
1. Hoist goes up
BSO secondary brake is closed:
WARNING: STOP DOWNWARD TRAVEL!
but not down.
Primary wire rope has run out
Proceed according para. 5.4, (3), page 16.
or has failed.
2. BSO secondary brake
a) Mechanical defect.
a) Contact the supplier.
automatically
closes
without apparent reason.
b) Oversized or damaged wire rope
b) Check wire rope and replace, if necessary.
3. Secondary brake will not
Frozen parts
DO NOT USE the unit until the brake has thawed,
actuate manually.
dried and is in proper condition. Thawing may be
accomplished by blowing ducted dry heat
(200 degrees F. max.) on the brake area.
DO NOT USE OPEN FLAME!
4. Centrifugal weights do not
Dirty, corroded, or worn parts.
Check operation through the sightglass. Do not use
turn or do not turn smoothly
if operating improperly. Return unit to TRACTEL.
during
operation.
7. INSPECTIONS and MAINTENANCE
NOTE: A maintenance program should start for
each hoist immediately after it is entered into
service.
This maintenance program should comply
with recommendations in the applicable parts and
Instruction Manual, and all pertinant Federal, State,
Provincial and Local regulations.
Regular inspections should be followed for
the life of the hoist and written inspection
records kept as speci
fi
ed.
7.1 Inspections
7.1.1 DAILY INSPECTIONS
EACH DAY
PRIOR TO USE
AND DURING OPERATION
CHECK:
(1)
Primary brake function
: “click” noise, when starting/
stopping the hoist.
(2)
blocstop BSO secondary brake function
.
I
At ground level
fi
rst close the BSO secondary
brake by pushing EMERGENCY STOP button
(d2). Then push Control lever (d1) in DOWN-
position and make the wire rope form a loop
between tirak
™
casing and BSO secondary brake
(Fig. 28). Open BSO secondary brake by pulling
down control lever (d1) until it locks in the open
position.
With gloved hands sharply pull wire rope in ar-
row direction (Fig. 28) – the BSO secondary
brake should close immediately (Fig. 29).
Reset BSO secondary brake by pushing
down control lever (d1) until it locks in the open
position.
Figure 28
BSO Secondary Brake
Check I
Wire rope loop
(d1) Closed
(d1) OPEN
EMERGENCY
STOP (d2)
