Periodic Checks; Electrical System - IMER TR 225 Operating, Maintenance, Spare Parts Manual

7.1 WIRE ROPE
Only use new ropes as specified below, complete with certificate
of conformity and identification.
External diameter (mm)
Type 133 wires (19x7) anti-spin
Direction of lay dx
Strand strength (N/mm2)
Minimum breaking strain (kN)
Length (m)
Surface treatment galvanised, greased
The IMER reference code is given in the spare parts table.
Fig. 4.1
The drum is fitted with a device which
ensures that 2 turns of rope are always
wound on even when the rope is
unwound to its limit. This stops the rope
attachment from being over-forced.
The rope must be attached in this way.
Completely unwind the rope. Extract
from the inside of the drum through the hole and slot.
Insert the new rope in the hole ahd thread it through the slot in
the drum tube. Tighten the clamp at the end, leaving about 1 cm
of rope free (Fig. 4.2), and pull the rope until the clamp comes
in contact with the innner wall of the drum.
Fig. 4.3
Wind on two complete turns keeping
the rope in contact with the drum
(Fig. 4.3).
Fig. 4.4
On the second turn pass
the rope under the hook
inside the drum slot (Fig.
4.4).
Tension the rope for good
contact with the drum
surface.
Now wind on the rope in
adjacent turns, one layer at a time.
Insert the wire rope into the counterweight and the block (Fig.
4.5).
Pass the rope back through the counterweight and the block.
Insert the wedge between the block and the rope.
Pull the rope to tighten all components. Now lock the rope with a
U-clamp so that the flat part remains in contact with the lifting section
of the rope.
Fit the hook to the block and tighten the bolt and locknut.
IMER INTERNATIONAL S.p.A.
TR 225 (110V 50Hz)
5
1960
16.07
31
7.1.1 REPLACING THE
ROPE (Fig. 4)
The rope must be replaced by
a qualified service technician.
Remove the hook (4) by
unscrewing bolt (5).
Remove the clamp (1), push on
the wedge (2) and extract the
rope from the block (3).
Fig. 4.2
Check that the UP limit switch operates when the counterweight
touches the lever.
Run the load test described in paragraph 5.

7.1.2 PERIODIC CHECKS

Visually check the condition of the rope every
day and whenever it is subjected to abnormal strain
(twisting, bending, kinks or abrasion).
Replace the rope when defective (Fig. 16).
Inspect the entire rope carefully every three months and in
particular the ends; note the results in the chart (Table 2) which
must be kept by the site foreman.
Replace the rope at least once a year.
7.2 ADJUSTING THE MOTOR BRAKE (Fig.5)
The brake is of the no-power engagement type.
If its braking power is reduced a
qualified technician must check the
device and adjust it.
Warning!!
servicing the brake make sure
that the winch is not loaded and
that the brake s power supply is
disconnected.
Remove fan cover (A), and adjust the
air gap d between magnet (B) and
brake disk (C) by means of a feeler
gauge.
The gap (d) must be 0.4 mm.
Measurement should be taken at three
points in order to check that the disc
is perfectly parallel to the magnet.
Slide the feeler gauge lightly backwards and forwards. If the
air gap is too wide, reduce it by tightening nut D with a ring
spanner. Check distance d several times. If the air gap is too
small, increase the it by unscrewing nut D .
Once the air gap has been correctly adjusted, refit cover A .
To check braking power, after carrying out the adjustment,
repeatedly test braking action under full load conditions (ref.
para. 5).
7.3 GEARMOTOR LUBRICATION
- The gearmotor unit must not develop oil leaks. Leaks may
indicate damage to the aluminium casing. In this case, reseal or
replace the casing.
- Check the gearmotor oil level through the
sight glass before every start up or long storage. Refill
as required. The oil should be changed every 2000 hours.
Use gear oil with ISO VG 460 viscosity at 40°C.
- Used oil is classed as special waste. As such, it
must be disposed of in accordance with the established
legislation.

7.4 ELECTRICAL SYSTEM

Check the condition of the pendant control case and cable , if
damaged it should be replaced with the IMER spare part.
9
Fig. 4.5
Fig. 5
Before