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MAN16MG05
instructions
for
use
series
drh
1/2/3/4 -
dst
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n
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s
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drt
104
B) - Internal recovery of the braking clearance:
1.
Operating from the raised scaffolding/platform, remove the protective grid (vent) positioned on the brake cover
by completely unfastening the four screws (fig. 154).
2.
Unscrew the three screws on the brake block lock ring nut completely (fig. 159).
3.
Remove the ring nut from the block by releasing it, if necessary using a screwdriver in the notch (fig. 160).
4.
Turn the ring nut counter-clockwise by 360° (1 complete turn), considering that one complete turn of the ring nut
generates an axial shifting of 1 mm on the brake block.
5.
Draw the block in towards the ring nut by lining up the holes.
6.
Reset the three screws in their original position on the ring nut, fastening them back onto the block (fig. 161).
7.
Reassemble the grid (vent) by fastening the four screws completely (fig. 162).
Once these operations have been completed, check to make certain the brake adjustment, with the clearance
recovery, has been correctly performed, verifying (firstly without and subsequently with a nominal load) that:
•
The motor rotates freely, without any abnormal noises, brake friction or overheating of the brake cover.
•
The brake operates silently and the trolley comes to a stop without any slipping.
164
165
fig. 159
fig. 160
164
165
161
162
fig. 161
fig. 162
If several attempts are made at adjusting the braking torque and the desired braking space is not
obtained, proceed with replacing the motor cover, as outlined under section 6.6.4 of the manual,
ordering original spare parts EXCLuSIVELY.
105
instructions
for
use
series
drh
1/2/3/4 -
dst
/
n
/
s
-
dst
/
r
-
drt
MAN16MG05
6.5
Dismantling the hoist and related trolley
Where it is necessary to disassemble the DRH wire rope hoist and related trolley to fit them
to a new installation or to subject them to maintenance and/or repairs which require work
on the ground (e.g.: replacement of the trolley wheels), proceed as described in the
following points:
The disassembling operations must be carried out by qualified staff trained for the purpose, equipped
with:
• adequate personal protection measures (e.g.: helmet, gloves, safety harnesses, etc.)
• work equipment (e.g.: forklift truck or travelling crane and scaffold) adequate for the purpose
And after a careful evaluation of the following parameters:
• typology of the workplace, its environmental characteristics, type of ground
• height of the girder and available spaces
• dimensions and weight of the hoist to disassemble
• For hoists installed on trolleys, even if only the disassembly of the hoist is necessary, the disassembly
of the entire hoist/trolley unit is recommended.
• When possible or necessary, disassemble the hook block as described in point 6.6.1 or at least position
it at a height which does not obstacle the disassembling operations.
KMAN16MG05
Содержание DRH 1 Series
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