misia XM SERIES, Инструкция по установке, эксплуатации и обслуживанию

Страница: 56 / 76

56
ELECTRIC WIRE ROPE HOIST
XM SERIES
Limit switches - Check their conditions and
proper operation (operate the limit switches
manually several times). In particular, for the
limit switches of the movements. check their operations
during an ordinary manoeuvre, testing first at low
speed. Make a statistical check on their resistance to
atmospheric agents. Check the mechanical integrity
of the moving parts (lever and springs) and check the
tightness of the fastening screws.
Fuses - Keep a regular stock of each type of
fuse fitted, so that they can be quickly replaced
with the same type of fuse if necessary, see
Table 40).
Terminals - Periodically check that the
terminals are properly tightened; check that
the identification number is clearly visible and
fastened to the terminal; check the integrity of the heat
insulating material and replace promptly if cracked or
broken.
4.7.1 MAINTENACE SCHEDULES
AND INTERVALS
The intervals between the maintenance
procedures shown in Table 10 below refer to
a hoist working under normal duty conditions
as stated by the FEM standard 9.511 for the group
1Am; for heavy duty conditions, the frequency of the
maintenance operations must be increased.
Timers - Check and clean the contacts with
the same procedures as the contactors; check
intervention simulating an external operation
and, in case of damage, replace the damaged part.
Motors - Clean the motor removing any
dust settled on the case that could hinder
regular cooling; check that the ventilation
openings are not obstructed; with the motor running
at normal operation range, check the noise level, the
temperature and the presence of any clearance in the
rotor mountings. In case of even minimal clearance,
temperatures close to the mounting higher than
those of the case and/or high noise level, replace the
bearings with the motor running at normal operation
range, check the temperature of the case using a
temperature probe. Temperatures above 110°C reveal,
in fact, that the motor is overloaded; in this case, look
for the causes inside the equipment and check the
duty for which the hoist is intended; check the current
consumption and the voltage, comparing them with
the rated values shown in the rating plate of each
motor (see table 2-2A-3-4-5 on page 40).
This consideration is also valid if the hoist is used in
a higher duty class, than the one specified. In case of
normal and proper use of the hoist, its overhaul may
be performed after running time of approximately 10
years accordingly to the FEM standard 9.755 (S.W.P.).
The recommended intervals are indicative and
may be changed in compliance with the duty
class for which the equipment is used.
Recommended periodic maintenance and inspections
Table 10
Machine
components
Intervals
1st maintenance Periodical inspections Maintenance
after 3 months after 12 months daily weekly monthly every
INSPECTION OF ROPES
AND FASTENERS
X X 6 months
LIMIT SWITCH FUNCTION X X 6 months
LOAD LIMITER X X 6 months
HOOK CONDITIONS X X 6 months
GEARBOX FUNCTION X X 12 months
BRAKES FUNCTION X X 4 months
BRAKE AIR GAP ADJUSTMENT X X 6 months
INSPECTION OF WHEELS/
ROLLER BEARINGS
X 6 months
STOPPER CONDITIONS X 6 months
INSPECTION OF THE ELECTRIC EQUIPMENT X X 6 months
KEYPAD X X 3 months
FASTENING BOLTS X 12 months
4. OPERATION AND MAINTENANCE INSTRUCTIONS