Maintenance
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EN-US · 30.30.01.01610 · 00 · 01/20
ü
The manual slide valve (3) is closed.
ü
All manual slide valves (6.3) on the suction plates are closed (optional switchable manual slide
valves).
1. Switch on the vacuum generator.
ð
A warning signal sounds until the minimum vacuum of -0,6 bar is reached.
2. If no warning tone sounds, shut down the lifting device and have the warning device checked.
3. Place the lifting device on a load with a smooth, airtight surface, e.g. a metal sheet.
4. Open the manual slide valve (3) (set to
Apply suction to load
).
ð
Suction is applied to the load.
5. Once the vacuum is established, create a leak on the sealing lip.
ð
The vacuum shown on the gauge will decrease.
ð
When the vacuum falls below the minimum vacuum of -0,6 bar, the warning signal must sound.
•
The alarm threshold of the warning device is set for the lifting device at the factory. Never adjust
the alarm threshold.
1. If no warning tone sounds, shut down the lifting device and have the warning device checked.
2. If the gauge does not show the values specified above, shut down the lifting device and have the
warning device and gauge checked.
9.4.2 Checking Vacuum Hoses and Hose Clamps
1. Check the vacuum hoses for wear.
2. Replace damaged vacuum hoses (chafe marks, breaks, kinks, etc.).
3. Check that the hose clamps are securely attached and tighten if necessary.
9.4.3 Checking the Lifting Device for Leaks
Check the entire lifting device for leaks once a month.
1. Switch on the vacuum generator.
2. Place the lifting device on a load with a smooth, airtight surface, e.g. a metal sheet.
3. Apply suction to the load and lift it by a few centimeters.
4. Wait until a vacuum of approx. -0.7 bar is reached.
5. Switch off the vacuum generator.
6. Observe the pressure drop on the gauge.
ð
The vacuum must not drop by more than 0.1 bar within 5 minutes.
1. After the inspection, set the manual slide valve to the “Release load” setting.
2. Detach the lifting device from the load.
If the vacuum drops at a faster rate:
1. Check the suction plate or sealing lip, hose, hose connections and screw unions for damage and
leaks and replace them if necessary.
2. Check the vacuum filter, clean or replace the filter cartridge if necessary.
9.4.4 Greasing the Manual Slide Valves
4
Every six months, lightly (using a brush, for example) grease the areas in front of and behind the
black sleeve with “Klüber Microlux” lubricant or an equivalent alternative.