Nussbaum JUMBO NT 3500, Operating Instruction And Documentation

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Operating Instruction and Documentation
Jumbo NT 3500
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pic.9 Similar to Figure
9.4 Filling and bleeding the hydraulic system
• The automotive lift is complete assembled. The connection of the tubes and pipes are
right associated. Only the right power supply , the right oil and the right portion of the oil
and the closeness of the hydraulic parts have to be checked.
If the hydraulic connections be open (prolongation the tubes), air can penetrate in the
tubes.
• If you have an unequal run of the lift. You must check the lift. Check the coordination of
the hydraulic hoses. (see chapter 3.4)
• Carry out a bleeding of the cylinders in case with these symptoms:
abruptly lifting from the lowest position, unequal platform with load, not complete lowering
of a platform in the lowest position.
This procedure must be performed always in succession. I.e. just fill and then bleed.
Correct bleeding:
Check whether 14 litres are in the oil tank. Oil level = between the upper and the lower
marker or 2cm under the filler.
• The emergency lowering screws are closed.
• Before remove the plastic covers.. Open the both equalisation screw A1 and A2 at the
hydraulic block. Raise the lift on the top end position. Press the button ”lifting”. (the lift
braced himself).
• Open only the emergency lowering screw N1. This dissolves the tension in the scissors.
and the elevator is up straight again. (Attention! The lift should not be lowered, otherwise
the connection of the hydraulic hoses are wrong).
• Open the emergency lowering screws N2. The lift starts to lower.