Donati DRH 1 Series, Instructions For Use Manual

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MAN16MG05
instructions for use series drh
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1. Activating the descent switch -1- on the push-button panel, bring the hook block into the position of maximum
descent
-2-
and release any load (fig. 208).
2. Remove the live power from the hoist pressing the emergency stop button -3- ; put the level of the disconnettine
switch in the ”O” or “OFF” position, reach in safety the working zone, bringing to a height the push-button
panel to prevent it being activated from the round (fig. 208).
3. Remove the brake cover -12- unscrewing completely the four screws -10- (fig. 209).
4. Remove the circlip -13- (fig. 209).
5. Unscrew completely the three screws -7- from the blocking ring -8- remove the brake shoe -9- (fig. 209).
6. Screw in blocking ring -8- to the end of the run and remove the brake shoe -9- (fig. 210).
7. Install the new brake shoe
-9-
and screw the blocking ring
-8-
. Fix again the blocking ring
-8-
to the brake shoe
-9- using the three screw -7- (fig. 209) applying the couples shown in the table (fig. 211).
8. Put mount again the circlip -13- (fig. 209).
9. Install the brake cover -12- tightening it with the relative screws -10- and nuts -11- applying the couples shown
in the table (fig. 212).
10. Procede to the test runs and check the braking spaces according to the table (fig. 213).
11. Where necessary, adjust the brake as described in point 6.4.1.
6.6.2 Lifting brake replacement (conical motor)
M 10 M 10 M 12 M 14
41 Nm 41 Nm 70 Nm 112 Nm
drh3 drh4 drh1 drh2
Cover screw clamping couples
To replace the brake of the hoist motor, procede as follows:
fig. 212 fig. 211
9
10
12
8
7
13
fig. 209 fig. 210
fig. 213
8
9
1
2
3
fig. 208
Braking space with nominal load
N°
falls
Speed
(m/min)
Braking space (mm)
Limit
value
hoist size drh
1 2 3 4
2
12
maximum 120 150 180 210
optimal 40 50 60 70
8
maximum 90 120 150 180
optimal 30 40 50 60
4
6
maximum 60 75 90 105
optimal 20 25 30 35
4
maximum 45 60 75 90
optimal 15 20 25 30
6 2,7
maximum 30 40 50 60
optimal 10 13 16 20
8 2
maximum 22 30 37 46
optimal 7 10 12 15
M 6 M 6 M 8 M 8
8 Nm 8 Nm 22 Nm 22 Nm
drh3 drh4 drh1 drh2
Blocking ring clamping couples (7)
11
10
12
6
4
6
118 instructions for use series drh
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MAN16MG05
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1. Acting on down push button -1- take the hook block in down position -2- and keep out the load (fig. 208).
2. Keep out tension at the hoist pushing circuit brake switch -3- , switch in “O” or “OFF” position, reach the work
area, keep on the pendant push button to avoid any other ground activation.
3. Remove motor cover
-4-
screwing out the four screws
-5-
(fig. 209a).
4. Remove the fun -6- screwing the screws -7- (fig. 210a).
5. After having disconnected the brake supply cables from the Boiwo terminals inside connecting box, remove the
fixing screws -8- , extract the brake group -10- and the disk -11- from the hub then remove the register screws
-9- (fig. 211a).
6. Remove the keeper -12- and change the brake disks -11- . Insert the first disk on the hub and push it in contact
with the shield then the second disk between the brake body and the keeper then tighten the register screws
(fig. 212a).
7. Insert the brake group -10- on the hub then the fixing screws -8- (fig. 213a) then go to magnetic gap adjustment
following
6.4.2
instructions.
6.6.3 Lifting brake replacement (cylindrical motor DRH4 24kW)
To replace brake motor disks go on in this way:
fig. 212a fig. 211a
fig. 209a fig. 210a
fig. 213a
1
2
3
fig. 208
KMAN16MG05