Ingersoll Rand BHR8 Manual De Uso página 3

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tArtIng p he AlAncer
Assess the range of the work area and, if appropriate, hang the balancer to a roller guide to be able to use it properly in an area
wide enough to carry out the required activities.
If screw-fixing devices are used to install the balancer, use self-locking nuts, split-pins or other safety systems.
In order to avoid anomalous wear, the load must be applied vertically. The balancer must in any case be free to move in its suspension
so that it can line up with the direction of the load.
The balancer must be installed on a structure having an adequate mechanical resistance. Mechanical resistance of the structure >
5*(Balancer weight + Max load).
It is possible to install more than one balancer to the same main structure only if each balancer has an independent connection
point and the structure has a mechanical resistance higher than five (5) times the weight of all balancers plus all maximum loads.
It is possible to install more than one balancer to the same secondary structure (i.e. safety rope) only if each balancer has an
independent connection point and the structure has a mechanical resistance higher than five (5) times the weight of all balancers
plus all maximum loads.
When starting up a balancer, we suggest that the following procedure is used:
- Connect the balancer to the main structure through the suspension hook, if present, or fixing hole.
- Connect the safety device to the secondary structure.
- Lift the load to be hanged to the balancer.
- Connect pipe (23) (Fig.2) to nipple (16) (Fig.2);
- Connect the compressed air supply to the nipple on pipe (23) (Fig.2);
- Connect the tool to nipple (21) (Fig.2-4).
- Lower the load by unwinding the balancer's pipe and adjust the stroke limiter clamp to avoid bringing the load above the operator.
- Adjust the balancer strength as long as the hanged load is balanced. Rotate in the direction of the + sign to increase the strength
of the balancer. Rotate in the direction of the – sign to decrease the strength of the balancer.
Ensure that the working area is adequately lightened to allow a good overview of the operations and of all the equipment, avoiding
dark areas, dazzling and strobe effects.
For all balancers that do not have a suspension hook, make sure that it is fixed to the main structure in such
a way as not to block the movements (oscillations and rotations) which are functional to the correct operation
of the balancer itself.
Use the hole (A) (Fig.1) for main suspension and hole (S) (Fig.1) for safety suspension.
Always connect the safety suspension (S), with exclusive use of the supplied standard fittings (Fig.1), to
a suitably sized support. The safety support MUST NOT BE the same one used for the main suspension
(A) (Fig.1). If the main suspension breaks, the max falling distance must not be more than 100 mm. Let
the parts of rope that are not under tension come out for at least 20 mm and tight the nuts of clamps 21215 (fig.
1) gradually together with a 2 Nm torque.
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AlAncer DjUstMent
To allow the balancer to balance heavier loads within the load capacity accepted, turn knob (4) as shown in (Fig.2) (anti-clockwise,
indicated by the "+".symbol, adjustment is not continuous but in steps: after each step, the knob (4) must go back into contact with
plate (5) (Fig.2). For lighter loads, extract the knob (4) and, gripping it tightly, turn it as shown in (Fig.3): after each step, the knob
must go back into contact with plate (5) (Fig.3).
When the load has been adjusted, check that the entire length of the pipe can run freely: the movement must not be limited by the
complete winding of the spring. Check the stroke several times at different speeds.
NOTE: a reduction of the ability of the balancer to hold the hanging load might mean that the drum spring is about to break. DO NOT
MODIFY THE BALANCER ADJUSTMENT TO SUSTAIN THE LOAD ANYHOW, INSTEAD CALL IMMEDIATELY THE SPECIALIZED
PERSONNEL AUTHORIZED TO MAINTENANCE.
Do not use by hanging a maximum load greater than the maximum load allowed and by balancing the same through the regulator.
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sIng he AlAncer
Grip the tool hanging from the balancer and carry out the required operations. Then accompany the tool as far as it balances, on
the vertical line of the balancer, and release it.
The load to be balanced must be hung on snap-hook (24) (Fig.4). Ensure that the snap-hook is closed correctly after having hung the load.
The pipe must never be fully unwound: the work travel must end at least 100 mm before it reaches the lower limit of the run:
If necessary, move and block the clamp (18) (Fig.4) to limit the upward run.
Do not unhook the load if the clamp (18) (Fig.4) does not lean onto the pipe's swaging (POSITION SHOWN IN
FIGURE 4).
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