Southworth Products
PUN Manual
PUN Manual
11
The power unit is designed for three-phase AC. If you connect
the power so the motor runs backwards, the bucket will not
move, and you may damage the pump. Do not operate the unit for
more than 2 or 3 seconds if you think the motor might be turning
backwards.
4.5 Checking the Hydraulic System
Check the level of the hydraulic fluid in the system. With the bucket lowered completely,
the hydraulic fluid can be checked by viewing the sight gauge on the reservoir of the power
unit.
4.6 Testing
1. Clear the area around the unit. Remove any materials which might get in the
way of the bucket as it raises or lowers. Be sure that the safety guards are in
place on both sides of the unit.
2. Warn others to stay away from the unit. Operate the unit through its full range
of travel. The bucket should rise smoothly with a quiet humming sound, and
lower smoothly and quietly. Raise and lower the bucket a few times to check the
operation.
3.
As the bucket lowers, notice how the bottom of the enclosure meets the floor.
The front edge (load edge) of the enclosure should touch at the same time
as any other part of the enclosure. If any other part of the base of the bucket
touches before the front edge, the floor is not flat. Insert shims above the low
spots on the floor, so that the base is flat and level.
If another part of the bucket touches the floor before the front
edge, the machine may not stop automatically at the correct
moment. This may cause the machine to try to lift itself off of the
floor.
If the “Tilt Down” proximity switch is out of adjustment, the
machine may continue to run when it should be stopped. This
may cause the machine to try to lift itself off of the floor. This
could cause damage to the unit.
4.
As a final step, clean up all spilled hydraulic fluid. Spilled hydraulic oil is slippery,
and may present a fire hazard. If you clean up any spilled fluid, you will be able
to tell right away if the unit begins to leak.
5.
Operation
To avoid death or serious injury:
•
Only trained and/or qualified personnel may operate the machine.
• Crush, pinch, and shear points exist; keep hands, feet, and loose clothing
away from moving parts.
