YATO YT-17000 Manual Original página 9

GB
distribution of the hydraulic oil.
It is required to check before each task all the screwed connections, and tighten them if necessary. This will increase safety of
operation and prolong the life of the lift.
Lifting
Before lifting may commence, make sure that the operator of the lift has the lift itself and the lifted load within the range of sight
during all realised movements.
Using the narrower end of the arm of the lift, close the release valve turning it home clockwise (II).
Insert the lift arm into the socket.
Place the lift under the load to be lifted in the place designed for a lift (e.g. in case of vehicles), so that the load is supported in the
central section of the saddle of the lift (III).
If necessary in post lift sit is possible to unscrew the extension bolt until the saddle of the lift touches the lifted load (except YT-
17008 and YT-17009).
Moving the arm upwards and downwards lift the load to the required height.
Once the load has been lifted, protect it from falling down using for example appropriate supports.
Lifting
Before lifting may commence, make sure that the operator of the lift has the lift itself and the lifted load within the range of sight
during all realised movements.
Using the end of the arm of the lift, close the release valve turning it home clockwise. (II)
Place the lift under the load to be lifted in the place designed for a lift (e.g. in case of vehicles), so that the load is supported in the
central section of the saddle of the lift. (III)
Insert the arm of the lift into the socket. Moving the arm upwards and downwards lift the load to the required height.
Once the load has been lifted, protect it from falling down using for example appropriate supports.
Lowering
Before lowering of the load may commence, make sure that the load to be lowered will not cause any injuries to the personnel.
Using the narrower end of the arm of the lift turn the release valve slowly anticlockwise. Do not open the release valve more
than this is required to slowly lower the load.
Excessive opening of the valve may cause its removing from the casing.
Once the load has been completely lowered, disconnect the arm from the lift, and remove the lift from under the load. In case of
post lifts, it is required to remove the extension bolt, if it was used.
Maintenance
If the lift is not used the shaft of the lift and the socket of the arm should be in the lower position. In case of post lifts also the exten-
sion bolt should be turned into the shaft of the lift. This will prevent the surface of the shaft from corrosion.
The lift must be kept clean, and the external moving elements of the lift must be lubricated at least every ten working hours.
Purging the hydraulic system
It is required to have the following maintenance action realised in a specialised service point.
From time to time the hydraulic system of the lift fi lls with air bubbles. This may impair the functional effi ciency of the lift. If this is
the case the hydraulic system of the lift must be purged.
Place the lift in such a manner that the shaft is in a vertical position. Open the release valve and remove the oil tank plug (IV). Then
move the pump of the lift energetically a couple of times so as to remove the air.
Close the release valve and replace the oil tank plug. Check the functioning of the lift, and if necessary repeat the purging pro-
cedure.
Filling the oil tank and lubrication
It is required to have the following maintenance action realised in a specialised service point.
Place the lift in such a manner that the shaft is in a vertical position. Move the pump and the shaft to the extreme lower position.
Remove the oil tank plug (IV).
Use solely hydraulic oil whose viscosity class is SAE 10. It is prohibited to use other liquids for that purpose. Fill the tank to the
lower edge of the oil inlet.
Purge the lift following the direction indicated in „ Purging the hydraulic system".
Replace the oil tank plug. Check the functioning of the lift.
In regular intervals (at least every ten working hours) lubricate the articulated connections and other moving elements of the lift.
In case of post lifts, remember of periodical lubrication of the extension bolt thread.
O R I G I N A L I N S T R U C T I O N S
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