MAN16MG05
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
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s
-
dst
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r
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drt
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The maintenance plan includes ordinary types of work, such as inspections, checks and tests conducted by the
operator and/or by qualified staff appointed for normal company maintenance and periodical maintenance, which
includes replacement, adjustments and lubrication, carried out by technical staff trained for the job through specific
courses and publications.
Maintenance operations are divided into:
6.3.1 Daily and periodical maintenance
It includes maintenance work which can be performed directly by the hoist operator or by qualified staff, as
instructed in this publication and/or in attached documentation, which do not require the use of special instruments
or equipment.
6.3
Maintenance plan
• As maintenance work can be carried out at a dangerous height, staff must have
appropriate means of support (scaffolding, platform, ladders etc.) which allows the
work to be performed in safe conditions.
• Staff must also have suitable individual protection devices (D.P.I.).
Quarterly checks to be performed by qualified staff:
• Check the efficiency and wear of the: hook, rope and rope guide
• Check wear of rope drum and pulleys
• Check wear of wheels, sprocket wheels, guide rollers of the trolley
• Verify efficiency and functionality of overload switch
• Visual check inside switchboard for the presence of dust
• Check for oxidised contacts: to be covered, after cleaning, with a very thin layer of
Vaseline
• Check of lubrication of mobile trolley of any festooned cable and cable check
• Check efficiency and integrity of electricity supply line and its components
• Loaded check of motors and brakes and verify level of wear
Daily intervention to be performed by the hoist operator:
• general visual check
• functional checks: motor tests, limit-switch tests, empty test runs, push-button tests of
“stopping” and of the other functions of the push-button panel
• check of the state of the wire rope and hook
Monthly intervention to be performed by qualified staff:
• Visual check of every gear and for possible lubricant leakage
• Function check of the break at full load
• Check that anomalous noise and/or vibration are not present
• See to the lubrication of the gears and limit switches to guarantee normal functioning
and to limit wear
• Check the functionality and integrity of the push-button panel and relative cable
85
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
MAN16MG05
6.3.2 Frequency and deadlines for maintenance work
The frequency of the following operations is for DRH hoists used in normal working conditions and is valid up to the
M6 group (ISO norm 4301-1:1986) or 3 m (FEM rule 9.511/86).
If the hoist is used normally and correctly for a daily 8 hour shift, overhaul can take place after a period of about 10
years (FEM rule 9.755/93). If used during a number of shifts then the maintenance periods must be reduced
proportionately.
Object of the check
Checks
Inspections - Testing
Structural elements
Welding
Pivots and hinges
rope
Securing elements
Lifting hook
hook block pulleys
Transmission pulleys
rope drum shell
rope grip guide
Lifting reducer
Translation reducer
Lifting motor
Transverse motor
Lifting brake
Transverse brake
Wheels and sprockets
dST/S Guide rollers
Trolley
buffers
Electrical system
Push-button panel and
cable
Overload switch
Lifting limit switch
Translation limit switch
Cleaning
and lubrication
daily
Monthly
Quarterly
Annually
General visual checks.
Verify good functioning
General visual
inspections
Wear
check
Annual
test
70
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90
90
91
91
92
93
93
94
95
96
97
Wear and
efficiency check
Check bolted and
welded joints
Wear and
efficiency check
Wear and
efficiency check
Wear and
efficiency check
Wear and
efficiency check
Wear and
efficiency check
Calibration
check
Wear and
efficiency check
Loaded testing
Loaded testing
Wear and efficiency
check
Leakage check
Lubricate ropes, hook
and mechanisms
Loaded testing
Wear check
Wear check
Noise check
Loaded testing of
braking distances
Visual inspection for
external breakage pushbutton
panel/cable
Inspection
of general lubrication
Visual inspection
Visual inspection and
check safety latch
Check correct
functioning
Check correct
functioning
Check correct
functioning
Check correct
functioning
Check correct state of
cleanliness
and lubrication
Page
Verifiche periodiche
Table of periodic checks and maintenance
Loaded testing
to verify operation
KMAN16MG05
Содержание DRH 1 Series
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