56
INSTRUCTIONS JIB CRANE SERIES GBA - GBP
MAN05MGO5
1. Regulate the slidability of the rotation of the arm, using the braking system by means of the adjusster screws
1
,
until you obtain the required flexing sensitivity (fig. 82).
2. Carry out the check of planarity of the arm with the help of a level. Carry out such a check rotating the arm by
90°totheleftandtotheright(fig.83).
6.4
Adjusting and regulating
Warning!
Exposure to moving parts
can cause danger.
•Adjustmentsofthebrakemustbe
carried out by qualified
maintenance staff.
• Use of protective gloves and, if
necessary, safety harnesses.
Risk of crushing
in case of contact
with the rotation arm when adjustments
of the brake are being made.
REMAINING RISKS ON THE CRANE DURING THE ADJUSTMENT OF THE BRAKE
DANGER / RISK
BAN / WARNING
OBLIGATION / PREVENTION
•Thebrakeofthejibcranemustbeadjustedsoastoguaranteethestabilityofthearminanyof
itspositionswithamaximumload.
•Thebrakingismechanicalandisensuredbytwopushedclutchplates,whichwithadjusting
screws work on a pressure plate, in contact with the rotation tube of the arm.
• The clutch plates, which are asbestos-free, are subject to wear in relation to the intensity of
service and when, after a period of use, there is a tendency of the arm to take up preferred
positions putting itself in different positions to those required when the rotation action has not
happened,adjustmentmustbemade.
Toadjustthebrakeofthearmofthejibcraneproceedasfollows:
WARNING! When this operation is carried out at a height, on a scaffolding or other
mobileequipment,theuseofsafetyharnessesisobligatory.
fig.82
fig.83
6.4.1 Adjusting the rotation brake of the crane arm
Iftheadjustmentofthebrakehasbeenmadeseveraltimesandafterthelastadjustmentthestability
of the arm is not guaranteed, replace the clutch plates.
1
KMAN05MG05
