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160XT 180XT 210XT
20.4 ANNUAL INSPECTION (REGULAR INSPECTION)
The inspection shall be performed by a skilled technician or an expert inspection
body with documented evidence of competence (see point “Periodic inspection”).
During inspection, special attention shall be paid to the the steel structures, the
safety devices and the operating system.
Clean the lift before the inspection
The inspection includes the following measures and checks:
- measures of the daily and monthly inspections
- thorough inspection of the hydraulic system
- inspection of the power unit
- connect the pressure gauge to the measuring point in the hydraulic system
- make the oil flow through the relief valve by driving one of the movements
against the end stop
- read the pressure from the gauge; when the oil is warm the pressure should
be 21-21,5 MPa (210-215 bar)
- load-holding check-valves on the outriggers
- lift the device off the ground with the outriggers and measure the distance
to the ground at each outrigger
- step on the platform and extend the telescope, keeping the boom level
Turn the boom round a few times; return it to its initial position and check
that the distance between the ground and the outriggers has not changed.
- lift the outriggers from the ground and leave them in this position for about
10 minutes
Observe that the outriggers do not lower of themselves.
- load-holding check-valve on the lift cylinder
- lift the boom to an angle of about 45° from the chassis control centre, and
extend the telescope
Observe about 10 minutes that the boom does not lower of itself.
- load regulation valve of the telescope cylinder
- lift the boom and extend the telescope slightly from the chassis control
centre; leave it in this position for about 5 minutes
- make sure that the telescope does not retract of itself
- load regulation valve of the levelling system
- put a load of about 120 kg on the platform
- lift and lower the boom 4-5 times
- make sure that the position of the platform does not change
- electric directional valves
- operate all the boom and turning movements, and check that they all
operate properly and that the movements stop as soon as the levers are
released
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