Presto P4 - Manual (Page 10)

10 PRESTO P4 LEVEL LOADER OWNER’S MANUAL
2. Before lowering the platform, be sure all
workers are clear of the unit.
WARNING!
As the platform moves up and down,
“pinch points” are created as shown
in Fig. 2. STAY AWAY FROM THESE
PINCH POINTS! Part of your body or
clothing may become caught, and
you may be hurt.
3. There is a photoelectric toe guard near the
front of this unit. If anything blocks the
photoelectric beam, the unit will stop. This
is designed to prevent an operator from
lowering the platform onto his or her feet.
WARNING!
Stand back from the unit when
raising or lowering the platform.
Keep your feet away from the
platform when the unit is operating.
MAINTENANCE AND
TROUBLESHOOTING
All servicing should be done by qualified
personnel. Qualified personnel should be able
to read and understand wiring and hydraulic
diagrams. They should be able to troubleshoot
live electrical circuits safely and in accordance
with accepted practice. FOR SAFETY’S SAKE,
if in doubt, please contact your distributor or
Presto Lift’s Customer Service Department at
(800) 343-9322. Before servicing the unit,
please read and understand all of this section
and the section entitled “Operating Instructions.”
Hazards
There are several hazards you should be aware
of as you service the unit:
DANGER!
The unit uses a power supply of 115
Volts AC. This voltage can kill you.
DON’T WORK ON THE ELECTRICAL
PARTS UNLESS YOU ARE A
QUALIFIED ELECTRICIAN!
WARNINGS!
• As the unit moves up and down,
“pinch points” are formed as shown
in Fig. 2. KEEP HANDS, FEET AND
LOOSE CLOTHING AWAY FROM
THESE PINCH POINTS. If your hand
or arm or a part of your clothing is
caught, you may be hurt.
• Before performing any
maintenance on the unit, lower the
platform completely. Failure to do so
could result in severe personal
injury.
• You should not have to do any
maintenance work with the platform
raised. All normal maintenance can
be done with the platform lowered.
However, if you ever need to work
under the platform, you must be
careful to do this safely. Raise the
platform until you can insert the
safety pins on each side. The pins
are shown in Fig. 6. Finally, unplug
the power cord. DO NOT WORK
UNDER THE PLATFORM UNTIL YOU
HAVE INSERTED THE PINS. If you fail
to do this, the platform may drop
suddenly. You may be hurt.
• The relief valve has been included
for the protection of all of the
workers who use the unit. DON’T
CHANGE THE RELIEF SETTING! If
the relief valve does not open when
it should, the unit may fail. Someone
may be hurt, and the unit and load
may be damaged.
• If the hydraulic fluid is released
under high pressure, it can cause
personal injury. Before you open any
part of the hydraulic system, BE
SURE TO RELEASE THE
HYDRAULIC PRESSURE. You can do
this by lowering the platform all the
way down.
• The warning labels have been
included for the safety of the