MAHA MPJ-1S Series, Original Operating Instructions

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BA551601-en
5.3 Raising and Lowering
(Designation A to E: see section “Description > Design and Operating Principle ”)
5.3.1 Manual Lifting Operation
Unloaded Rapid Stroke
Rapid stroke is performed via the manually operated rapid control (D). Extend
the piston rod to the lifting point (axle, gearbox).
Load stroke
Load stroke takes place via the manually operated load stroke control (F).
5.3.2 Automatic Lifting Operation
Unloaded Rapid Stroke
By actuating the automatic rapid control (B), the piston rod extends to the lifting
point (axle, gearbox). Depending on the air pressure and the lifting height
reached, the piston rod extends a little further even after the pushbutton is
released! Therefore, a distance to the lifting point must be maintained.
Load Stroke
Load stroke takes place via the automatic load stroke control (E).
5.3.3 Support
After reaching the desired lifting height, support the load with original MAHA
support systems. For handling and operation, see the Original Operating
Instructions "Lifting Accessories for Pit Jacks".
5.3.4 Lowering Operation
Lowering under Load
When lowering under load, the lowering valve may only be opened by slow,
slight counterclockwise rotation of the lowering spindle (A) to achieve a
controlled lowering movement.
Lowering without Load
Open the drain spindle (A) by turning it counterclockwise as far as it will go and
lower the piston rod completely. In the case of automatically operated jacks,
this will actuate the lowering valve, and the piston rod is retracted using
compressed air.