Donati DRH 1 Series, Instructions For Use Manual

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MAN16MG05
instructions for use series drh
1/2/3/4 -
dst
/
n
/
s
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dst
/
r
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drt 120
6.6.4 Replacing the traverse brake
1. Cut off the trolley’s power supply by pressing the emergency stop button -1- ; set the line cut-off switch lever to
the “O” or “OFF” position, then safely access the work area, taking the keypad up to the work area so as to avoid
its being activated from the ground (fig. 214).
2. Operating from the raised scaffolding/platform, remove the protective grid (vent) positioned on the brake cover
by completely unfastening the four screws (fig. 215).
3. Remove the motor’s brake cover by completely unfastening the four screws (fig. 216).
4. Unscrew the three screws on the brake block lock ring nut completely (fig. 217).
5. Unscrew the ring nut completely and slide out the brake block with the worn out resistance material.
6. Assemble the new brake block (with the new resistance washer) and screw the ring nut back on entirely. Fasten
the ring nut onto the brake block once again using the three screws. Reassemble the motor cover by tightening
the screws and nuts (fig. 218-219).
7. Reassemble the grid by completely fastening the four screws (fig. 219).
8. Proceed with conducting operating tests and adjusting the braking torque as outlined at letter A of section 6.4.3.
To replace the trolley motor brake, proceed as follows:
fig. 217 fig. 218 fig. 219
fig. 214 fig. 215
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fig. 216
121 instructions for use series drh
1/2/3/4 -
dst
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n
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s
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dst
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drt
MAN16MG05
6.6.5 Replacing the wheels of DST/N-S-R trolleys
• Remove the snap ring -1- and take off the wheels -2- (if necessary lever on the edges or use extractors).
• Put on the new wheels -2- ,the snap rings -1- .
• Reinstall the hoist/trolley on the sliding girder as described in paragraph 4.4.
fig. 220
This operation must be carried out after disassembling of the hoist/trolley from the girder on which
it is installed (see paragraph 6.5).
The replacement of all four wheels is recommended even if some of them appear to be in good
condition.
Assess moreover whether the transmission sprockets need replacing too.
For the replacement of the wheels proceed as follows: (fig. 220).
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