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English - Instructions
!
WARNING
Make sure that this instruction is fully understood by the operator
before the product is installed and used. The product and its
accessories are intended for compressed air.
Maximum working pressure (e): 7 bar (0.7 MPa, 102 psi)
Working temperature: 0°C – +40°C
For product liability and safety reasons any modification of the
product and its accessories must be agreed upon by the
technical authority of the manufacturer.
All locally legislated safety rules with regard to installation,
operation and maintenance must be respected at all times.
Do not install the balancer without an easily accessible shut off
valve upstream of the connection.
For increased security a secondary cable or chain should be
attached between the balancer and a suitable part of the factory
overhead structure. A hole is provided, for this purpose, adjacent
to the main suspension hole.
Before any maintenance or service work - shut off the supply and
release the air pressure in the suspension hose. Also release the
motor spring tension to avoid pinching.
Check that the inlet and suspension hose are in good condition
and fitted correctly.
Ensure that all connected equipment are in "Off-position" before
turning on the air supply.
To avoid pinching never put your hand on the hose close to the
hose outlet bush.
Air Supply
A dry and filtered air supply is required. Normally the air pressure
should be controlled by a pressure regulator. Filter and regulator
should be installed upstream and as close as possible to the hose
reel balancer. If lubrication is required an air line lubricator should be
fitted to the system downstream of the filter and regulator. Correct air
treatment guarantees a good total economy. Atlas Copco's air
preparation units of the MINI-series are recommended.
Tension Adjustment
To Increase
Turn handwheel (34) anti-clockwise until the required tension is
achieved.
To Decrease
Restrain handwheel (34), move lock spring (33) looped arm
anti-clockwise and allow handwheel to rotate under restraint, by
motor spring tension.
CAUTION Do not turn handwheel (34) manually to decrease
tension. This will force the lock spring (33) out of its
retaining pocket on the cover allowing the motor spring
(5) to unwind rapidly out of control.
To Dismantle
Servicing tools needed
All threads are R.H.
General
Hold inlet connector (26) with a 14 mm spanner and with a 17 mm
spanner unscrew inlet hose assembly (40). Insert hexagonal key (5,5
mm) through inlet connector to hold air inlet shaft (22) and unscrew
inlet connector.
Remove O-ring (25) and washer (24). Hold nuts (12) with 8 mm
spanner, unscrew and remove screws (11) thus releasing front cover
(1).
Remove the handwheel (34) which is pressed onto the end of the
main shaft (31). Manually expand the lock spring (33) and
simultaneously press out the main shaft (31) through the rear cover
(2).
2
5.5 mm
Hexagon wrench
8 mm
Spanner
12 mm
Spanner
14 mm
Spanner
17 mm
Spanner
Atlas Copco Tools - No. 9836 1002 02
Remove four screws (10) and separate the drum end cover (4) from
the drum (3); spring (5) will remain in the drum together with the
rotary connector (21) and the suspension hose with the buffer (53)
and hose outlet bush (9). Separate hose from rotary connector by
unscrewing tubing nut (52).
CAUTION Check that spring rivets are sound; then push the spring
out of its location using a rod through the holes provided.
Never pull spring by its centre coils.
The remainder of the components are readily separated into
individual items with exception of the hose assemblies by reference to
the illustration. Discard the O-rings (25) and (23).
Suspension Hose Assembly
Hold flats of connector (59) with a 12 mm spanner and using a 14 mm
spanner, unscrew tubing nut (58) from connector. Withdraw tubing
nut together with spring (57) from hose (51) and unscrew spring from
nut. Loosen clamp screw (54) and remove buffer (53) from the hose.
Inlet Hose Assembly
The procedure for dismantling the inlet hose is identical to that given
for the suspension hose with the exceptions that the supply
connection nut is 17 mm, and connector assembly (45) is 14 mm and
17 mm A/F respectively.
To Assemble
Required grease Molycote PG75 Plastislip
General
This is mainly a reversal of the dismantling sequence but observe the
following points.
A
Completely degrease main shaft spindle end and the locking
spring coiled bore to ensure a good locking grip.
B
Ensure that the spacing collar (7) is assembled and that motor
spring (5) is anchored into the hose drum (3) and hose drum
end cover (4) and main shaft (31), check that spacing washer
(8) is in place.
C
Lubricate new O-rings with grease. Carefully assemble to the
grooves on the air inlet shaft and to the shoulder on the shaft at
the inlet connecting end.
D
When fitting front cover (1) to rear cover (2) check that outlet
bush seats correctly in each cover's aperture before securing
with screws (11) and nuts (12).
E
After assembly and before setting the balancing tension, pull
the suspension hose out to its full extent and allow it to return
under restraint to check for freedom of movement and correct
assembly.
Suspension Hose Assembly
If the removed hose is being re-fitted, cut 10 mm off each end, square
to the hose. This is to ensure that the hose end, previously forming
the joint, is not used again.
Assemble tube nut (52) to hose and push clear of the end. Hold rotary
connector (21) and force the tube end over the connector bulge
finishing up hard against the connector shoulder at end of the thread.
Bring up the tube nut to the connector and after ensuring that the
hose end is in the set position, engage the tube nut thread with that of
the connector, and screw it on as far as possible by hand. Clamp
assembly lightly in a soft-jawed vice. While maintaining pressure on
the hose to keep its end hard up against connector, tighten tube nut
(see dismantling for spanner sizes) to clamp hose end. Thread buffer
(53) onto hose and assemble the remaining end, fitting similar parts,
following the procedure given for the other hose end assembly.
Inlet Hose Assembly
With the exception of different item numbers for similar items, the
procedure for assembling the inlet hose is similar to that given for the
suspension hose.
HRIL 1/3
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