Genie GTH-6622, Руководство оператора

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Document 57.0005.8200 - 12/2005
Handler with telescopic boom GTH-6622
Page
D-19
MAINTENANCE
■
D-3.15 CHECKING THE SAFETY DEVICES
■
Checking the block valves
(every 3 months)
.
The piloted blocking valves allow to held the load in
position in case of burst of a flexible hose.
To check the efficiency of a valve, proceed as follows:
•
Load a weight near the maximum payload (2500 kg
roughly) onto the boom.
• Raise the load some centimetres above the ground
(max 10 cm). To check the valve on the telescope
extension cylinder move the boom to maximum
height and extend it some centimetres.
• Loosen the oil hoses to the cylinder of which you
are checking the valve with caution.
During the check, the oil will flow out of the hoses and
the load shall remain blocked in position. Should that
not be the case, the valve must be replaced. Contact
GENIE Technical Service.
DANGER
- Wear safety glasses
- Wear safety gloves
- Wear safety shoes
- Wear suitable working clothes
- Use guards against leaks of oil at high pressure
- Do the check in a free space with barriers all
around to keep non-authorised people away
- During the check proceed with extreme caution.
- Ensure that the part to be checked is in safe
condition and that the action generated does
not result in an uncontrolled movement of the
machine
Lifting cylinder
Extension cylinder
Attachment coupling cylinder
Balance cylinder
Attachment pitching cylinder