MAN16MG05
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
92
• Ensure that braking distances, with a nominal load, are not greater than those designated (fig. 139).
• Check that the brake unlocks correctly whenever work has been done, ensuring that the rotor does not remain
locked in by the brake and /or there is no rubbing present
• With a nominal load, check that the brake, once the push-button has been released, keeps the load suspended
for at least 10 minutes without showing signs of it yielding or slipping. If slipping occurs, place the load on the
ground, cut out the electricity supply and check for wear on the surfaces of the brake lining and of the brake
block. Also check for any other anomalies
• When necessary, adjust the brake and/or replace the brake cover with brake lining as described in paragraphs 6.4
“Adjustments” and 6.6 “Replacement”
Monthly check of braking distances.
Quarterly check of the efficiency of the hoist and trolley motors:
When values greater than those in the table are found, see to the adjustment of the brake
as described in paragraph 6.4 “Adjustments”
• Replace the brake cover with a new brake lining when instability of the load is found,
even after having adjusted the brake itself
IN CASE OF ANOMALY:
• It is forbidden to carry out corrective maintenance on the lifting and transverse self-
braking motors
• Any extra maintenance work on the lifting and transverse motors must be carried out
by the assistance service of DONATI SOLLEVAMENTI S.r.l. or by staff authorised by
them.
DONATI TECHNICIAN
DONATI SERVICE
2 falls
4 falls
6 falls
8 falls
Speed
12 m/min
120
40
90
30
60
20
45
15
–
–
150
50
120
40
75
25
60
20
–
–
180
60
150
50
90
30
75
25
50
20
40
15
210
70
180
60
105
35
90
30
60
20
45
15
Speed
8 m/min
Speed
6 m/min
Speed
4 m/min
Speed
2,7 m/min
Speed
2 m/min
Maximum limit before adjustment
Best value following adjustment
Maximum limit before adjustment
Best value following adjustment
Maximum limit before adjustment
Best value following adjustment
Maximum limit before adjustment
Best value following adjustment
Maximum limit before adjustment
Best value following adjustment
Maximum limit before adjustment
Best value following adjustment
Braking distance (mm) with nominal load
hoist size
=>
drh1
drh2
drh3
drh4
fig. 139
93
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
MAN16MG05
• Check the state of wear and tear on the edges and rotating bands of the travelling trolleys and of the guide rollers
in the articulated version
• Check also ball bearings which need to be replaced where there is excessive noise or excessive friction, “jolting”
rotation, difficult and/or irregular
• Check the state of wear and tear of the toothed crowns of the wheels and of the related sprockets the state of
lubrication. Where necessary carry out lubrication of the gears after careful cleaning or on replacing both wheels
and sprockets
• In the DRT trolleys with a transmission bar, check the keying clearance between wheel and bar and reducer; where
there is clearance it is necessary to replace the bar and/or the wheels.
•
Check that the end stops are not deformed and that there are no signs of sagging in their fixing to the structures
and that the buffer is intact and fixed well to its support.
Quarterly checking of the efficiency of the wheels, sprockets and guide rollers
(fig. 140):
Annual check of the efficiency of the trolley buffers
(fig. 141):
Replace the buffers when there are:
• signs of breaking or permanent deformation, cuts, abrasion, incisions
Replace the wheels and/or guide rollers of the trolley if:
• the thickness of the wheel edge is reduced by
≥
50%
• the rotation diameter of the wheel has wear of
≥
5 mm
• the toothed crown of the wheel or sprocket shows heavy wear, in this case the
transmission sprockets must also be replaced
• the rotating diameter of the roller shows wear
≥
2 mm
• when it is necessary to replace the drive wheels, to obtain the best functional and
duration guarantee, replacement of both the drive wheels and related sprockets is
recommended
• f or the procedure for replacing wheels, for all trolley types, see point 6.6 “Replacement
of parts and components”
fig. 140
fig. 141
KMAN16MG05
Summary of Contents for DRH 1 Series
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