MAINTENANCE
52
Inspect flashing light
Switch on the vacuum generator.
Place the lifting device on a workpiece with a nonporous, smooth surface and apply suction to load.
WARNING
Risk of injury from falling parts in the event of vacuum failure
The load may come loose and fall off during inspection.
►
Only apply suction to the load. Do not lift.
Lift the sealing lip of the suction plate slightly when the vacuum is building to simulate a leak.
The vacuum shown on the vacuum gauge will decrease. The light flashes when the vacuum falls short of
–
0.6 bar.
WARNING
Risk of injury from falling parts
►
The vacuum switch is factory-preset. Do not ever adjust it.
Inspecting suction hoses and clamps
Check that all suction hoses and hose clamps are securely fastened; tighten if necessary.
Check airtightness
Carry out a leak test once a month.
1.
Position the suction plates on an air-impermeable and smooth surface such as a metal sheet.
2.
Turn on the vacuum.
3.
Apply suction to the load but do not lift (see chapter 6.5).
WARNING
Risk of injury from falling parts in the event of vacuum failure
The load may come loose and fall off during inspection.
►
Only apply suction to the load. Do not lift.
1.
Wait until a vacuum of approx.
–
0.6 bar is achieved.
2.
Turn off the vacuum pump. The vacuum may not weaken by more than 0.1 bar within 5 minutes.
3.
Release the load after inspection (see chapter 0).
Rectify all faults before starting up the system. Should faults occur during operation, switch off the device and rectify the
faults.
