Donati DRH 1 Series, Instructions For Use Manual

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instructions for use series drh
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6.5.3 Disassembling the hoist with double girder DRT trolley
• Attach a 4-rope fall sling, using a lifting apparatus adequately chosen in relation to the handling weight and to the
handling height, to the attachment points of the trolley (fig. 178)
• Operating at a height (scaffold, platform, gallery), put back the eyebolts in the relevant places of the trolley (if
removed)
• Remove the antiderailing devices -1- by unscrewing the relative nuts -2- (fig. 179)
• Lift with care and/or position the trolley/hoist in the foreseen place.
The handling of the hoist/trolley unit must be carried out SOLELY with a LIFTING apparatus (overhe -
ad travelling crane, travelling crane, hoists, etc.) and with the relevant slings fixed to the eyebolts on
the DRH trolley.
fig. 179
drhcarrbitr19
drhcarrbitr63
2
1
fig. 178
110 instructions for use series drh
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6.6.1 Replacing the wire ropes of the hoist
1. Push the “descent” button on the push-button panel, until the intervention of the related limit switch, so that the
hook block reaches the lowest possible height (fig.181).
6.6
Replacement of parts and components
To ensure the operating safety of the DRH wire rope hoist and related trolley original spare parts
prescribed by DONATI SOLLEVAMENTI S.r.l. must be used.
Warning! Exposure to the moving
parts can cause dangerous
situations.
It is forbidden to put the hoist into
action if the removed protective
covers have not been put back.
• Allocate the wire rope-repairing
operations to qualified
maintenance staff
• Compulsory use of protective
gloves.
risk of dangers of entanglement/
crushing in the case of contact with
the rotating drum in wire rope-
replacing phase.
REMAINING RISKS ON A HOIST IN THE WIRE ROPE-REPLACING PHASE
DANGER/RISK BAN/WARNING OBLIGATION/PREVENTION
• During wire rope replacement, to prevent the rope spring projecting, it is COMPuLSORY to use
the special “Spring tightening” device (fig. 180), which is available from the DONATI
SOLLEVAMENTI S.r.l. Service and Assistant Centres.
• In the case of DRH hoists intended to be operated on board of double girder trolleys, the
replacement of the wire rope in working position could cause operating difficulties which create
dangerous situations regarding safety. The maintenance officer, before carrying out the
operation described below, must ensure that there is safety access to the working zones. If
necessary, carry out the wire rope replacement after disassembling the hoist as described in
paragraph 6.5.
To disassemble the old wire rope, proceed as follows:
fig. 180 fig. 181
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