Completing Installation - Southworth LS Serie El Manual Del Propietario

If the lift will be used at normal ambient temperatures, Southworth supplies the unit with Conoco AW 32 oil. This may be
replaced by any other good quality oil with 150 SSU at 100° F and rust and oxidation inhibitors and anti-wear properties.
If the lift will be used at ambient temperatures below 0°F, use aircraft hydraulic oil. Use Type 15 aircraft hydraulic oil.
The following are equivalent to CONOCO AW 32:
TYPE
DTE 24 ............................. EXXON/MOBIL
NUTO H32 ........................ EXXON/MOBIL
AMOCO AW32 .................. CHEVRON (AMOCO CO.)
AW32 ................................. CITGO
It is very important to keep the hydraulic oil free of dirt, dust, metal chips, water, and other contamination.
Most of the problems with hydraulic systems are caused by contamination in the oil.
12. Raise the lift and insert the maintenance devices, as
shown in Figure 1.
13. Make the permanent electrical connections as shown
in Figure 17 or 18 (for single-phase) or Figure 19 (for three-
phase).
14. Check the level of the hydraulic fluid. On most models,
when the lift is fully elevated, the oil should be about 3/4 inch
above the bottom of the tank. Use a dipstick to check the oil
level, and add oil as necessary.
Do not fill tank when lift is raised.
Testing
15. Clear the area around the lift. Remove any loose wires,
lumber, or other materials that might get in the way of the lift
as it raises or lowers.
16. Remove the maintenance devices and warn others to
stay away from the lift. Operate the lift through its full range
of travel. The lift should rise smoothly with a quiet humming
sound, and lower smoothly and quietly. Raise and lower the
lift a few times to check the clearances around the lift table.
WARNING!
As the lift table moves up and down, "pinch points"
are created at the places shown in Figure 6. If you are
standing too close to the lift when it is moving, your
arm or leg may be caught in the moving parts, and
you may be hurt. Stay away from the pinch points
when the lift is moving.

Completing Installation

17. Once you are sure the lift is positioned correctly, mark
the locations of the lag holes in the base frame, and drill the
holes. If necessary, insert metal shims to level the base of
the lift. Insert and tighten the lag bolts to secure the lift. Grout
10
Southworth Owner's Manual -- LS Series
Table 1 – Hydraulic Oil Specifications
MANUFACTURER
NOTICE
under the base to prevent vibration and distortion of the base
frame, as shown in Figure 2.
18. If the lift is lowering too quickly or too slowly, you can
change the "down speed" by adjusting the flow control.
WARNING!
When adjusting the flow control, always raise the lift
table and insert the maintenance devices, as shown
in Figure 1. Do not try to adjust the flow control while
pressing the "down" button. If you try this, the lift
table may drop suddenly, and you may be hurt.
It is important that you follow these steps when adjusting
the flow control:
• Raise the lift table and insert the maintenance
devices, as shown in Figure 1.
• If you want the lift to lower more slowly, turn the control
clockwise up to 1/4 turn at a time. If you want the lift to
lower more quickly, turn the control counterclockwise up
to 1/4 turn. Do not move the control more than 1/4 turn
at a time.
• Remove the maintenance devices, and check the
descent speed.
• Every time you want to change the adjustment again,
raise the table again and insert the maintenance devices
as shown in Figure 1.
19. Test the lift with the rated load. If the lift does not rise, and
you hear a loud squealing noise, the pressure relief valve is
operating. Contact Southworth for instructions.
WARNING!
Do not continue to use the lift if this happens –
the pump will overheat very quickly, and may be
permanently damaged. Do not try to adjust the relief
valve. If you change the setting on the relief valve,