Presto DSL Series Setup guide

DSL
for series
DSL, TSL, QSL
Installation, Operation
and Service Manual
Model Number ___________________________
Serial # ________________________________
Date placed in service _____________
IMPORTANT: READ CAREFULLY
BEFORE INSTALLING OR OPERATING LIFT
Part orders are subject to a $50 minimum charge.
December 5, 2019

2 DSL OWNER’S MANUAL
This manual was current at the time of printing. To obtain the latest, most updated version,
please contact Presto-ECOA Lifts Customer Service Department or go to our website:
www.PrestoLifts.com where you will nd a complete list of current owner’s manuals to print.

DSL OWNER’S MANUAL 3
CONTENTS
INTRODUCTION ............................................................................................................4
RESPONSIBILITY OF OWNERS AND USERS .............................................................5
SAFETY ALERT SYMBOLS AND SIGNAL WORDS.......................................................6
SAFE SERVICING ..........................................................................................................7
SAFETY PRECAUTIONS................................................................................................8
INSTALLATION INSTRUCTIONS ..................................................................................9
Preparation ........................................................................................................9
Positioning the Lift ...........................................................................................10
Hydraulic Connections .....................................................................................10
Electrical Connections...................................................................................... 11
Completing Installation ....................................................................................12
OPERATING INSTRUCTIONS .....................................................................................12
Operating Procedure ........................................................................................12
Labels and Precautionary Markings .................................................................13
MAINTENANCE ...........................................................................................................14
Hazards ...........................................................................................................14
Troubleshooting Check List & Warnings......................................................16-17
ORDERING REPLACEMENT PARTS ..........................................................................18
2 YEAR WARRANTY ....................................................................................................23
List of Figures
Figure 1 Safe Servicing of Lift .................................................................................7
Figure 2 Mount the Lift Securely .............................................................................9
Figure 3 Using Lifting Eyes .....................................................................................9
Figure 4 Center the Load ...................................................................................... 11
Figure 5 Secure the Load ...................................................................................... 11
Figure 6 Labels & Precautionary Markings ...........................................................13
Figure 7 Pinch Points ............................................................................................14
Figure 11 Electrical Connections, Lifts Wired for Single-Phase AC ..........................19
Figure 12 Wiring Diagram, Lifts Wired for Single-Phase AC with limitswitch ..........20
Figure 13 Electrical Connections, Lifts Wired for Three-Phase AC .........................20
Figure 14 Schematic, Lifts Wired for Three-Phase AC ............................................21
Figure 15 Hydraulic Connections ............................................................................21
Figure 16 Hydraulic Diagram ....................................................................................22
Tables
Table 1 Hydraulic Oil Specications .....................................................................10
Table 2 Electrical Interface, Supplied by Customer .............................................22

4 DSL OWNER’S MANUAL
S E C T I O N 1
INTRODUCTION
This manual attempts to provide all of the information necessary for the safe and
proper installation, operation and maintenance of scissor Llfts. It is important that
all personnel involved with the installation, maintenance or operation of the scissor
lift read this manual.
Where unique situations arise, that are not covered in this manual, call Presto-ECOA
Lifts for further instructions. Additional manuals are available upon request or on
our web site at www.prestolifts.com.
The scissor lift has a nameplate that provides the load capacity ratings, serial
number and model identications. Please refer to these numbers when ordering
parts or requesting further information.
The scissor lifts are designed for lifting, lowering and positioning a variety of loads.
WHERE UNIQUE SITUATIONS ARISE, THAT ARE NOT COVERED IN THIS
MANUAL, CALL PRESTO-ECOA LIFTS FOR FURTHER INSTRUCTIONS.
The scissor lifts are designed for inplant/nonhazardous location use only. These
units are not for personnel lifting.

DSL OWNER’S MANUAL 5
Responsibility of Owners and Users
Inspection and Maintenance
The device shall be inspected and maintained in proper working order in accordance with Presto-
ECOA 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 qualied personnel in conformance with Presto’s instructions.
Operators
Only trained personnel and authorized personnel shall be permitted to operate these lifts.
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
examined and a determination made by a qualied person as to whether it constitutes a hazard.
All items not in conformance with Presto’s specication shall be corrected before further use of
these lifts.
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.
Modications or Alterations
Modications or alterations to any Presto-ECOA industrial positioning equipment shall be made only
with written permission from Presto.

6 DSL OWNER’S MANUAL
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 identied which may occur in the use of the machine, and there are appro-
priate 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 denitions
referenced from ANSI Z535.4 - Product Safety Signs and Labels.
4.11 Safety Alert Symbols: A symbol that indicates a hazard. It is composed of an equilateral triangle surrounding
an exclamation mark. The safety alert symbol is only used on hazard alerting signs. It is not used on safety notice and safety
instructions signs.
4.14 Signal Words: The words used in the signal word panel. The signal words for hazard alerting signs are “DANGER,”
“WARNING,” and “CAUTION.” Safety notice signs use the signal word “NOTICE.” Safety instruction signs use signal words that
are specic to the situation.
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE is used to address practices not related to physical injury.
SAFETY INSTRUCTIONS (or equivalent) signs indicate specic safety-
related instructions or procedures.
NOTE: DANGER, WARNING or CAUTION should not be considered for property damage accidents unless personal injury risk
appropriate to these levels is involved.
A): for use with DANGER signal word; (safety white triangle, safety red exclamation mark, safety red background)
B): for use with WARNING signal word; (safety black triangle, safety orange exclamation mark)
C): for use with CAUTION signal word; (safety black triangle, safety yellow exclamation mark)
D) and E): for use with DANGER, WARNING, or CAUTION signal word; (D: is a safety yellow triangle with a
black border and safety black exclamation mark; E: is a safety yellow triangle with a safety black exclamation mark and a
safety yellow border around a safety black band)
NOTE: D and E are provided to allow for consistency with certain ISO standards such as ISO 3864-1 and ISO 3864-2.

DSL OWNER’S MANUAL 7
SAFE SERVICING
OF THE LIFT
WARNING !
Only authorized personnel should perform inspection
or maintenance and service procedures. Unauthorized
personnel attempting these procedures do so at the risk
of severe injury or death.
DANGER !
Failure to properly adhere to lift blocking procedures
is to risk the sudden and uncontrolled descent of the
lift during maintenance or inspection. A falling lift can
cause severe injury or death.
This procedure describes the only factory-approved
method of working under a lift. Follow these instructions
EVERY time you plan to reach or crawl beneath the lift to
perform service or maintenance – no matter how momentary
that might be.
If the factory-provided maintenance device is damaged
or missing, stop immediately and consult the factory for as-
sistance. The manufacturer is not liable for your failure to
use the approved maintenance device(s) and procedures
that have been provided.
1. Any load must be removed from the lift prior to engaging
the maintenance device(s). These devices are designed
to support an unloaded lift only. Failure to remove the
load from the lift prior to blocking could cause the failure
of the maintenance device(s) and allow the lift to fall un-
expectedly. This can result in personal injury or death,
or permanent damage to the maintenance device(s)
and/or the lift.
2. Raise the lift to its fully raised position. If you do not,
the maintenance device(s) may not be able to be placed
properly in its/their designed blocking position.
3. Remove the maintenance device(s) from its/their storage
location and place it/them into the engaged position as
shown in Figure 1.
4. Lower the lift until it makes complete contact with the
maintenance device(s). Re-check to ensure that all
provided devices are fully and securely engaged. If
the device(s) is/are not fully engaged the lift could fall
unexpectedly, resulting in permanent damage to the
device(s) or the lift.
DANGER !
If for any reason you are unable to lower the lift com-
pletely onto the maintenance device(s), stop immedi-
ately and consult the factory. Failure to properly use the
factory approved maintenance device(s) could result in
severe injury or death.
5. (For single-acting hydraulic, and pneumatic lifts) Once
the maintenance device(s) is/are properly and securely
engaged, continue to press the down button, valve or
switch for an additional 5-10 seconds to relieve all pres-
sure in the operating system.
WARNING !
Failure to relieve operating system pressure could result
in the sudden and unexpected release of high pressure
uids (or air) during maintenance and/or repair of the lift
and result in severe injury or death.
6. Follow OSHA electrical lock-out/tag-out procedures.
Disconnect and tag all electrical and/or other power
sources to prevent an unplanned or unexpected actua-
tion of the lift.
7. Once inspection or work is complete, reverse the perfor-
mance of the steps above to raise the lift off the main-
tenance device(s) and place the device(s) back into its/
their designated storage position(s).
DANGER !
HIGH VOLTAGE ! – Disconnect and/or lock out the
electrical supply to the power unit prior to any installa-
tion or maintenance being performed.
Fig. 1 – Safe Servicing of Lift

8 DSL OWNER’S MANUAL
WARNING!
• Do not perform any repair work on a lift with a load on the platform or with the table in a raised position.
• All personnel must stand clear of the lift when the lift is in motion.
• Do not put hands or feet under lift table.
• Do not perform any repair or maintenance work with the lift in an open position without securing it
rst with proper maintenance devices.
• Do not stand, sit or climb on the lift at any time.
• Do not use the lift on soft, uneven or unstable surfaces.
• Do not exceed the load capacity rating on the data plate.
• Do not place a load on a moving lift.
• Do not exceed load capacity.
• Place a load in the center of the lift and be sure that the load is secured properly.
S E C T I O N 2
SAFETY
The safety of all persons installing, using, servicing, or working near the unit is of paramount concern to
Presto-ECOA Lifts. The lift is a powerful machine with moving parts, and is capable of causing personal
injury if proper precautions are not taken. Therefore, throughout this manual, Presto-ECOA Lifts have
identied certain hazards, which may occur in the use of the unit, and provided appropriate instructions
or precautions that should be taken to avoid these hazards. In some cases, Presto-ECOA Lifts has also
pointed out the consequences that may occur if Presto-ECOA Lifts instructions or precautions are not
followed. Presto-ECOA Lifts use the following nationally recognized system for identifying the severity
of the hazards associated with its products:
DANGER – Immediate hazard that will result in severe personal injury or death.
WARNING – Hazard or unsafe practice, that could result in severe personal injury or death.
CAUTION – Hazard or unsafe practice, that could result in minor personal injury or property
damage.
In the interest of safety, please read the entire manual carefully. You must understand the material
in this manual before you install, use, or service the unit. If you have any question about any of
the instructions in this manual, please contact Presto-ECOA Lifts at 1-800-343-9322.

DSL OWNER’S MANUAL 9
INSTALLATION INSTRUCTIONS
Preparation
1. Before you start to install the lift, check for local codes
and ordinances which may apply. It is your responsibility to
obtain any necessary permits.
2. Read all of these installation instructions carefully.
Be sure to read and understand all of the warnings!
3. If your unit is designed to be installed in a pit, check the
pit before you start to install the lift. Measure the length and
width of the lift table, then measure the pit, and be sure the pit
allows adequate clearance. Does the pit have 90° angles at
each corner? To check, measure across the opposite corners
of the pit. The measurement on each diagonal should be the
same, within 1/2 inch. The walls of the pit should be vertical.
Check with a carpenter’s square.
Fig. 3 – Using Lifting Eyes
The chain should pull
nearly straight up
Chain spreader
Eye bolt
Captive nut
Base nut
Fig. 2 – Mount the Lift Securely
4. If the power unit will be mounted away from the lift
(“external power unit”), check the mounting arrangement
for the power unit. The power unit should be sheltered from
the weather. It should be mounted within 30 feet of the lift to
minimize the pressure drop in the hydraulic system. Be sure
the hydraulic lines have been installed properly.
WARNING!
Protect the power unit from rain or moisture.
If the electrical parts in the power unit get wet,
workers may be hurt by electrical shock. The
electrical parts may fail if they are wet.
WARNING!
The electric motor in the lift can create sparks.
Don’t install the power unit in an area where
ammable gases may be present.

10 DSL OWNER’S MANUAL
5. If the power unit is mounted within the lift (“internal power
unit”), you will need these tools:
• A crane or lift truck that can lift the unit safely.
• Shims and lag bolts – see the pit plan if the lift will be
mounted in a pit.
• A masonry drill and bit to drill the holes for the lag bolts.
• A power supply with the specied voltage, including fuses
or circuit breakers as specied in Figs. 11 and 12.
If the power unit will be mounted away from the lift (“external
power unit”), you will also need:
• A compressed air source for clearing the hydraulic lines.
• Extra hydraulic oil for ushing the underground lines and
relling the tank. See Table 2 for the oil specications.
Positioning the Lift
6. Remove the shipping material and unskid the lift. On the
front of this manual, conrm the model number, serial number,
and date the lift is placed in service. You can nd the model
number and serial number on the name plate. The name
plate is located on the crossbar at the base of the cylinders.
7. Move the lift into position, supporting the base of the lift.
Install the lift as shown in Fig. 2. Unless the lift is mounted
on casters, lag the lift to the oor.
CAUTION!
Do not hang the lift from the table top. This can
damage the lift.
WARNING!
If the lift is mounted on an unstable surface, it
may tip over when it is in use. You may be hurt,
and the lift and load may be damaged.
If your lift has lifting eyes, as shown in Fig. 3, use these
when you move the lift. It is best to use a chain spreader,
so the chain sections pull straight up. (You must supply the
chain and spreader.) Remove the lifting eyes once you have
moved the lift.
Hydraulic Connections
(External Power Units Only – If Internal Power Unit, proceed
to step 10.)
8. Install the power unit. Install the hydraulic line between
the power unit and the lift as shown on the pit plan.
9. Blow out the hydraulic line with compressed air before
connecting it to the power unit. Replace the solid plug on the
hydraulic uid tank with the vented plug supplied, then attach
the vent line to the vented plug.
WARNING!
Be sure that the hydraulic line will not be pinched
by the lift as it raises or lowers. If you allow
the line to be pinched, the lift may not work
properly. A hose may break, the lift table may
drop suddenly, and someone may be hurt.
CAUTION!
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
Table 1 – Hydraulic Oil Specications
If the lift will be used at normal ambient temperatures, Presto supplies the unit with CONOCO 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 32:
TYPE MANUFACTURER
DTE 24 ............................. EXXON/MOBIL
NUTO H32 ........................ EXXON/MOBIL
AMOCO AW32 .................. CHEVRON (AMOCO CO.)
CAUTION!
It is very important to keep the hydraulic oil free of dirt, dust, metal chips, water, and other con-
tamination. Most of the problems with hydraulic systems are caused by contamination in the oil.