Service manual

PRESTO OWNER’S MANUAL Page 8 WP & WPS Series Work Positioners
S E C T I O N 4
OPERATION
A. OPERATING INSTRUCTIONS:
1. To raise the lift, push the control handle or
activate the UP BUTTON on a remote con-
trol.
2. To lower the lift, pull the control handle or
activate the DOWN BUTTON on a remote
control.
3. Whenever the controls are released, the lift
stops.
AUTHORIZED OPERATORS SHOULD READ
AND UNDERSTAND ALL INSTRUCTIONS,
PRECAUTIONS AND WARNINGS. IMPROP-
ER USE OF THIS LIFT COULD RESULT IN
INJURY AND/OR DAMAGE TO THE LOAD
AND/OR EQUIPMENT.
• Inspect the lift for damaged or worn parts.
Do not use if not in safe operating condition.
• Use lift only on hard level surfaces.
• Make sure load is evenly distributed, not
loose or unstable and is as far back as pos-
sible on the platform or forks. Do not pick
up loads on the tips of the forks or edge of
platform.
• Adjust forks to the maximum practical width
on a fork model lift if they are adjustable.
Pick loads up on both forks, not one.
• Do not overload. Check load center and lift
weight capacities that are located on the data
plate.
• Make sure work area is clear of all obstruc-
tions.
• Check overhead clearance before lifting loads
or transporting.
• Make sure oor lock pad is in rm contact
with oor before lifting load, lowering load
or using as a workstation.
• Brace or block lift when sliding loads on or
off platform or forks.
B. DAILY OPERATIONS MAINTENANCE
CHECKS:
1. Battery
• Check for corroded and loose terminals. A
white powder substance will be present if
there is any existing corrosion.
• Check for loose battery tie-downs.
• Visually inspect for any cracks or damage to
the casing.
2. Charger
• Inspect wire connections.
• Check power cord for nicks/damage.
• Check charger for proper mounting.
3. Hydraulic System
• Inspect pump and cylinder for oil leaks.
• Check hydraulic oil level. Unscrew breather
plug on power unit with forks platform uid
will be ½ - ¾ of an inch from opening all the
way down.
• Check hydraulic ttings and hoses
4. Frame Assembly
• Check oor lock.
• Check placement of safety screen.
• Check chain roller assembly.
• Check for any worn or damaged parts.