Presto P4 - Manual (Page 6)

6 PRESTO P4 LEVEL LOADER OWNER’S MANUAL
1. The unit is supplied with a power cord which
is 10' long. You must provide a two-prong
outlet within this distance from the unit. The
circuit should be provided with a 20 amp
circuit breaker or fuse.
WARNING!
To avoid fire danger, be sure to
provide a circuit breaker or fuse.
2. The standard unit has a foot switch
assembly. Position the control box in a
convenient location near the unit.
3. Check the level of the hydraulic fluid in the
tank. In order to check the level, lower the
unit completely and unplug the power cord.
Remove the rear cover on the unit. When
the unit is fully lowered, the oil should be 1/
2" to 3/4” (13 to 19 mm) below the top of the
tank. Add oil as necessary.
Testing
1. Clear the area around the unit. Remove any
loose wires, lumber, or other materials
which might get in the way of the unit as it
raises or lowers.
2. Warn others to stay away from the unit.
Operate the unit through its full range of
travel. The unit should rise smoothly with a
quiet humming sound, and lower smoothly
and quietly. Raise and lower the unit a few
times to check the lifting action.
WARNING!
As the platform moves up and clown,
“pinch points” are created at the
places shown in Fig. 2. If you are
standing too close to the unit 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 unit is moving.
3. Test the unit with the rated load. If the unit
does not rise, and you hear a loud squealing
noise, the pressure relief valve is operating.
Contact Presto Lifts for instructions.
WARNING!
Don’t continue to use the unit 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