This manual was current at the time of printing. To obtain the latest, most updated version,
please contact Presto Lifts Customer Service Department or go to our website: www.Pre-
stoLifts.com -- you will nd a complete list of current owner’s manuals to print.
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Limited Warranty Policy
Presto Lis warrants this product to be free from defects in material or workmanship for the duration
of the warranty period. Warranty periods vary and begin on the date of shipment. For specic warranty
information, contact Presto Lis with the machine’s serial number.
Any claim for breach of this warranty must be received in writing by Presto Lis within the warranty
period. Warranties shall not cover failure or defective operation, caused by misuse, misapplication,
negligence or accident, exceeding recommended capacities, or any alteration or repair of the item purchased which has not been authorized by Presto Lis. Except as set forth herein, Presto Lis makes no
other warranties, express or implied, including THE WARRANTIES OF MERCHANTABILITY AND
OF FITNESS FOR A PARTICULAR PURPOSE, all of which ARE HEREBY EXCLUDED.
Presto Lis meets the labeling requirements of California’s Proposition 65. Presto Lis makes no warranty or representation with respect to the compliance of any product with other State or local safety
or product standard codes and any failure to comply with such codes shall not be considered a defect
of material or workmanship under this warranty. Presto Lis shall not be liable for any direct or consequential damages arising out of such non-compliance.
Presto Lis’ obligations under any warranty or for any other damages which may arise under any sale,
agreement, or contract, are limited to the replacement or repair of defective components at its factory
or another location at Presto Lis’ discretion. is is buyer’s sole remedy under any such warranty, sale,
agreement, or contract. Presto Lis will not be liable for consequential, incidental, exemplary, or punitive damages of any kind resulting from a breach of any warranty that it has provided or for breach of
any term of any sale, agreement, or contract. Any warranty may be altered only in writing by Presto
Lis.
All commodities, soware, or technology purchased from Presto Lis are subject to the export and
re-export control laws and regulations of the United States, including but not limited to the Export
Administration Regulations (“EAR”) and Department of the Treasury Oce of Foreign Asset Controls (“OFAC”) Regulations. Presto Lis expects all distributors and customers to comply with these
laws and regulations. Without limiting the foregoing, the distributor/customer cannot, without proper
authorization from the applicable United States Government Agency, export, re-export, or transfer
any commodity, soware, or technology purchased from Presto Lis, either directly or indirectly, to
any entity, country, or national of any country in breach of such laws and regulations. Furthermore,
Presto Lis expects that the distributor/customer shall indemnify and hold harmless Presto Lis from
and against any claim, proceeding, action, ne, loss, cost and damages arising out of or relating to any
noncompliance with export control regulations by distributor/customer, and distributor/customer are
expected to compensate Presto Lis for all losses and expenses resulting thereof, unless such noncompliance was clearly not caused by fault of the distributor/customer.
This manual attempts to provide all of the information
necessary for the safe and proper installation, operation
and maintenance of Presto Lifts Inc.'s MSeries Stackers. It is important that all personnel involved with the
installation, maintenance or operation of the stacker
read this manual. Where unique situations arise, that are
not covered in this manual call Presto Lifts for further
instructions. Additional manuals are available upon
request or on our web site at www.prestolifts.com.
The stacker has a nameplate that provides the load ca-
pacity ratings, serial number and model identications.
Please refer to these numbers when ordering parts or
requesting further information.
WHERE UNIQUE SITUATIONS ARISE, THAT ARE
NOT COVERED IN THIS MANUAL, CALL PRESTO
LIFTS SERVICE DEPARTMENT FOR FURTHER
INSTRUCTIONS.
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Responsibility of Owners and Users
Inspection and Maintenance
The device shall be inspected and maintained in proper working order in accordance with Presto’s
owner’s manual.
Removal from Service
Any device not in safe operating condition such as, but not limited to, excessive leakage, missing
rollers, pins, or fasteners, any bent or cracked structural members, cut or frayed electric, hydraulic,
or pneumatic lines, damaged or malfunctioning controls or safety devices, etc. shall be removed from
service until it is repaired to the original manufacturer’s standards.
Repairs
All repairs shall be made by qualied personnel in conformance with Presto’s instructions.
Operators
Only trained personnel and authorized personnel shall be permitted to operate PowerStak.
Before Operation
Before using the device, the operator shall have:
• Read and/or had explained, and understood, the manufacturer’s operating instructions and safety
rules.
• Inspected the device for proper operation and condition. Any suspect item shall be carefully ex-
amined and a determination made by a qualied person as to whether it constitutes a hazard. All
items not in conformance with Presto’s specication shall be corrected before further use of the
PowerStak.
During Operation
The device shall only be used in accordance with this owner’s manual.
• Do not overload.
• Ensure that all safety devices are operational and in place.
Modications or Alterations
Modications or alterations to any Presto industrial positioning equipment shall be made only with
written permission from Presto.
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S E C T I O N 2
SAFETY
The M Series stackers are very capable of causing serious injury or damage if adequate precautions are not
taken. By reading and following this manual, operator
injury may be prevented.
DO NOT INSTALL OR OPERATE THESE LIFTS
WITHOUT CAREFULLY READING THIS MANUAL. In order to provide for the safe operation of these
stackers, Presto Lifts Inc. has identied certain hazards
that may occur during the installation, maintenance and
use of these lifts.
WARNING!
• Do not perform any repair work on lifts if there is
a load on the platform or forks are in the raised or
lowered position.
• All personnel must stand clear of the lift when the
lift is in motion.
• Do not put hands or feet under forks or platform
while in motion.
• Do not put hands or feet on or near the mast
while the forks or platform is in motion.
• Do not stand, sit or climb on the lift.
• Do not exceed the load capacity.
• Place all loads centrally located on the lift forks
or platform.
• Do not place a load on a moving lift.
• Do not use the lift on soft, uneven or unstable
surfaces.
• Do not shock load the forks or platform. Materi-
als must be carefully placed rather than dropped.
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SAFETY ALERT SYMBOLS AND SIGNAL WORDS
The safety of all persons operating, maintaining, repairing, or in the vicinity of this equipment is of paramount
concern. This is a powerful machine with moving parts, and is capable of causing personal injury if proper
precautions are not taken. Therefore, throughout this manual, certain hazards have been identied which may
occur in the use of the machine, and there are appropriate instructions or precautions which should be taken to
avoid these hazards. In some cases, there are consequences which may occur if instructions or precautions are
not followed. Below are the symbols and signal words along with their denitions referenced from ANSI Z535.4
- Product Safety Signs and Labels.
Safety Alert Symbols
These are the safety alert symbols.. They are used to alert you to potential physical injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
For use with DANGER signal word
(Red Background)
For use with WARNING signal word
(Orange Background)
For use with CAUTION signal word
(Yellow Background)
Signal Words
The meaning of different signal words as dened by ANSI Standard Z535.4 indicates the relative
seriousness of the hazardous situation.
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(Red Background)
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(Orange Background)
CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or
(Yellow Background)
moderate injury.
NOTICE is used to address practices not related to personal
injury.
(Blue Background)
SAFETY
INSTRUCTIONS
(Green Background)
SAFETY INSTRUCTIONS (or equivalent) signs indicate safetyrelated instructions or procedures.
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S E C T I O N 3
INSTALLATION
INSTALLATION
When the stacker arrives on a pallet the following steps
are to be followed:
2). To lower lift, press release pedal down. Pressure on
release pedal controls speed of descent of load.
S E C T I O N 5
1. Through the use of a forklift or overhead hoist, pick
the stacker unit up taking into consideration the center
of gravity. The center of gravity of the unit should be
adequately supported.
2. Once the unit is lifted from the pallet by a couple of
inches, remove the pallet from under the stacker.
3. Follow the next sections to ensure proper operation.
S E C T I O N 4
OPERATION
METHOD OF OPERATION:
In order to operate the lift follow these operating procedures.
1). To raise the platform or forks, pump foot pedal until
platform reaches desired height.
MAINTENANCE
ROUTINE MAINTENANCE:
1). Grease wheels and casters at least once a month to
maintain easy roll of lift.
2). Do not overload the lift. All foot operated Presto
Manual Stackers have a maximum rated capacity
of 1000 lbs.
3). Use only hydraulic oil in the hydraulic system.
NEVER USE HYDRAULIC BRAKE FLUID.
Table 1 – Hydraulic Oil Specications
If the lift will be used at normal ambient temperatures, Presto Lifts supplies the unit with Conoco Super Hydraulic
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 Super Hydraulic 32: