Electrical System; Troubleshooting - IMER AIRONE 300 N Manual De Uso & Mantenimiento

8.2 ADJUSTING THE MOTOR BRAKE (Fig. 6)
The mechanical disk brake engages when the power supply to
the magnetic opening device is interrupted.
In case of a reduction in braking capacity, have the device
checked by a qualified maintenance technician, who will adjust
it if necessary.
- Caution. Before servicing the brake, make sure
the hoist is not loaded and that the power plug is
disconnected.
Remove the fan cover (A) and adjust
the air gap (d) between the magnet
(B) and brake disk (C) using a feeler
gauge: the gap (d) must be 0.4 mm.
Measurement must be made at three
different points to check that the disk
is perfectly parallel to the magnet,
sliding the feeler gauge lightly
backwards and forwards.
If the air gap is too big, reduce it by
tightening nut (D) with an Allen
wrench. If it is too small, increase it
by unscrewing nut (D). Check
distance (d) several times.
Once the air gap has been adjusted
according to the dimensions listed
above, refit cover (A).
To check braking capacity after making the adjustment,
repeatedly test the braking action under full load.
8.3 GEARMOTOR LUBRICATION
The gearmotor unit must not leak oil: significant leaks may indi-
cate damage to the aluminium structure. In this case, immediately
seal or replace the casing.
- Check the reduction unit oil level through the
sight-glass before every start-up. Top-up if necessary.
Top-up oil using the oil level cap on the gearmotor.
Change the oil approx. every 2000 hours of work. Use gear oil
with viscosity ISO VG 460 at 40°C (SAE 90÷140).
- The old oil is classed as special waste and must be
disposed of in accordance with the law.
8.4 ELECTRICAL SYSTEM
Check the condition of the pendant control insulating casing.
Make sure the steel cable connecting the pendant control to the
electrical panel is shorter than the power cable so that the
latter is not strained. Check that the electrical panel box is not
damaged. Check operation of the Up limit switch.
In case of damage to one of the above components, replace
with an original IMER spare part.
9. DISMANTLING THE HOIST
Remove any load from the hoist hook.
Wind the steel rope completely onto the drum. Disconnect the
power plug.
Remove the split pin from the support pivot and remove the
revolving frame.
10. TRANSPORT AND STORAGE
Do not leave the installed hoist unattended without
disconnecting the electric power line and winding the rope
completely onto the drum.
In case of prolonged disuse, it is advisable to keep it protected
against atmospheric agents.
During transport, protect the various machine parts against
impacts and crushing that could compromise its operation and
mechanical strength.
IMER INTERNATIONAL S.p.A.
AIRONE 300 N

11. TROUBLESHOOTING

The machine does
not lift or lower on
command
The machine lowers
Fig. 6 but does not lift.
IF THE FAULT PERSISTS
12. IN CASE OF MACHINE FAULT WITH SUSPENDED
LOAD
If possible, remove the load by accessing it from the level where
it is located, then remove the hoist and perform maintenance as
necessary.
Otherwise, use other lifting equipment (of sufficient capacity)
positioned higher up, and suspend the faulty equipment at the
load zone and near the hoist attachment points.
Lift the unit slowly to release it from the attachments, then
lower everything to the ground.
- Do not attempt to operate the brake adjusting nut, as it would
become uncontrollable.
- Do not attempt to repair the fault on the machine with the load
suspended
13. SCRAPPING THE HOIST
To scrap the hoist at the end of its service life, carry out at least
the following steps:
a) remove the oil plug and drain the oil;
b) separate the various plastic and electrical components
(cables, pendant control, etc.);
c) divide the metal components according to the type of metal
(steel, aluminium, etc.).
After the various components have been separated, dispose
of them at authorised collection centres.
can cause accidents or pollution.
14. NOISE LEVEL AT THE OPERATOR S EAR
The level Lp(A) specified in the TECHNICAL DATA table
corresponds to the equivalent weighted sound pressure level
on scale A envisaged by directive 98/37/EC. This level is
measured with no load, at the operator s head in the work
position 1.5 metres from the instrument, considering the different
working conditions.
14
FAULT CAUSE
Emergency stop button
engaged
No power to machine
Plug not inserted
Power board cutout
tripped
Up limit switch is faulty
or electric power line is
damaged.
- Do not disperse them in the environment, as they
SOLUTION
Turn to disengage
Check mains cable
Plug in
Reset the switch
Repair.
Contact IMER Technical
Service