Ingersoll-Rand BIDS-15 User manual

,
Form 32048-EU
Edition 4
July 1997
INSTRUCTIONS FOR MODELS BIDS-1 5, BIDS-20, BIDS-25
INTERMEDIATE DUTY BALANCERS
IMPORTANT SAFETY INFORMATION ENCLOSED.
READ THIS MANUAL BEFORE OPERATING BALANCER.
IT IS THE RESPONSIBILITY OF THE EMPLOYER TO PLACE THE INFORMATION
IN THIS MANUAL INTO THE HANDS OF THE OPERATOR.
FAILURE TO OBSERVE THE FOLLOWING
WARNINGS COULD RESULT IN INJURY.
FORSEEN USE
. Models BIDS Intermediate Duty Balancers are designed to
counter-balance the weight of Power Tools.
Ingersoll-Rand is not responsible for customers using these
balancers for other applications on which Ingersoll-Rand was
not consulted.
PLACING BALANCER IN SERVICE
. Always operate, inspect and maintain this balancer in
accordance with all regulations (Local, state, federal and
country), that may apply to hand held, hand operated power
tools and balancers
Calculate the total load to be supported by the balancer:
equipment, accessories and those sections of hose or cable to
be lifted by the balancer. The whole load to be balanced must
be within the specified capacity range of the balancer. (See
balancer capacity shown in the specifications).
To achieve the best performance, hang the balancer by the
hook 12 at a height which allows the use of the central section
of the cable stroke.
The balancer can be suspended from a fixed point or from a
traverse system which is perfectly horizontal.
To avoid anomalous wear the balancer must always be free to
rotate and line up with the cable, even when the load is not in a
vertical line with the balancer.
Connect the suspension S with a flexible cable to a suitable
support leaving a maximum extra stroke of 100mm (Fig.1). The
balancer must be free to rotate.
If screwed fasteners are used to connect the balancer at S and
12. either self locking systems and/or split pins should be
used.
With locking pin 32 in its working position (Fig. 2) hang the load
on the bottom hook.
Do not lubricate balancers with flammable or volatile liquids
such as kerosene, diesel or jet fuel.
. DOnot remove any labels. Replace any damaged label
. Refer to adjustment instructions in this manual.
USING THE BALANCER
When the balancer with its load is installed, check that working
conditions are correct (smooth movement with minimum
effort).
For a correct and safe use periodically check the status of the
upper attachments S-l 2 (if screws are used, the status of self
locking systems and/or split pins should be checked).
. Periodically check that parts under strain (hook, cable,
balancer suspension parts and connections to the tool) are
safe and not weakened by wear.
Never unlock the balancer (by means of cam 32 or by pulling
cable 9) with the cable extended or not attached to the load.
The cable could unwind at an uncontrolled speed causing
injury.
When the balancer is not working (for example when
being transported or in storage) the cable must be fully
retracted inside the balancer, with the rubber stopper 21
fitted against guide 20.
ADJUSTMENTS
. To increase capacitv. turn the hexagon coupling 2
counter-clockwise by means of a wrench D (Fig. 4). Pull cam
32 (Fig.4a) and check the balancing. Repeat until the
desired balance has been obtained:
. To decrease capacity, turn the hexagon coupling 2
clockwise by means of a wrench D and at the same time
slacken spring 3 in a counter-clockwise direction (Fig. 5).
Then reset cam 32 (Fig.5a). Repeat until the desired
balancing has been obtained.
Never attempt to slacken spring 3 without holding the
tension on hexagon coupling 2 with a wrench. This would
remove the main spring tension and the load would drop
once cam 32 had been reset.
. After adjusting the load, check that the cable 9 runs for its full
length and IS not limited by a fully loaded spring 8.
. When the balancer with its load is Installed, check that working
conditions are regular (movement with minimum effort). During
working the cable must not unwind its total length. It must stop
at least 50mm before the lower limit of the stroke (Fia.6). If
necessary adjust the clamp 22 to limit the upwards stroke
(Fig. 6).
Never unlock the balancer (by means of cam 32 or by pulling
cable 9) with the cable extended or not attached to the load.
The cable could unwind at an uncontrolled speed causing
injury.
Safety device
This device protects against load dropping due to breakage of
the main spring 8. The locking pin 28 prevents rotation of disc
8 when main spring tension is released (Fig. 3).
Adjustment for an insufficient load can also prevent disc 8
from rotating if the locking pin 28 is not in its correct place
when cam 32 IS reset. To avoid this problem proceed as
follows:
1) Increase the capacity.
2) Limit the stroke top the minimum by moving clamp 22
upwards.
3) Replace the balancer with one of a lower capacity.
The main balancing spring, together with its housing drum and the centrifugal safety disc are only
supplied as one complete item (9).
Refer all Communications to the nearest
Ingersoll-Rand Office or Distributor.
Printed in Italy PROFESSIONALTOOLS