5712, 5720, 5720AH
8
rev. 10/03/18
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential personal
injury hazards. Obey all instructions to avoid possible injury or death.
1. Inspect the press before each use for cracks, breaks, signs of damage/fatigue, hydraulic or air leaks, loose or missing hardware or
modifications. Do not use the press if any of the above conditions exist until the conditions are corrected.
2. The location of the press should not expose it to inclement weather, corrosive vapors, abrasive dust, or any harmful elements.
3. Lubricate moving parts once a month with a general purpose marine grease. Do not lubricate press accessoreis, press bed work surface
or ram.
4. It should not be necessary to refill or top off any pump reservoirs with hydraulic fluid unless there is an external leak. External leaks, if
caused from other than tightening hydraulic components, must be handled by calling Sunex customer service. NEVER USE ALCOHOL,
HYDRAULIC BRAKE FLUID OR TRANSMISSION FLUID IN THE HYDRAULIC SYSTEM. Use Chevron Hydraulic Oil AW ISO 32 or its
equivalent Unocal Unax AW 150.
5. Every press owner is responsible for keeping press labels and owner's manual readable. Contact Sunex for replacement labels and manual
if unreadable.
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential
personal injury hazards. Obey all instructions to avoid possible injury or death.
1. Press operator and all observers must wear eye protection, protective clothing and shoes before operating the press.
2. Keep body parts out of work area during a pressing operation. Make sure all guards are properly adjusted and secured.
3. Consider the work to be accomplished and then determine:
a. The amount of ram stroke required to accomplish the job.
b. The correct punch or adapter to be used and then install on the ram.
c. The distance the ram should be from the component to be pressed and the required press bed height to support the component.
d. Any adapters used for pressing must have a maximum tonnage rating equal to or higher than the rated capacity of the press.
4. Raise the press bed to the required height by first removing the press bed pins. Once the pins are removed, raise or lower the press bed
to the required height. The holes in the press bed must align with the closest holes in the press frame uprights before the bed pins can be
installed. Make sure the press bed pins are fully engaged with the holes in the press bed or the channel flanges or back sides of the press
bed and the holes in the paralleled uprights on both sides of the press frame. DO NOT ATTEMPT ANY PRESS WORK WITHOUT FULL
ENGAGEMENT OF ALL PINS.
5. Prepare set up of the component to be pressed and appropriate adapters or fixtures to adequately support the component during the
pressing operation. Make sure set up is stable and secure, the ram force is straight, and parts being pressed cannot slip out or break. The
owner of the press must provide shielding that is practical and necessary for each application.
6. Position appropriate guarding (protective shield, protective blanket, etc.) between work setup and press operator.
7. Never attempt to raise or lower the press bed until the work piece and adaptors are removed from the bed.
8. Inspect the length of the bed lifting cables (if so equipped) every 3 months to make sure they are not frayed, worn, crushed or stretched.
Replace, adjust or repair before using press.
9. Air may become trapped in the hydraulic jack during shipping and/or handling. An air trapped jack will not pump up the required
incremental pump strokes or pumping may feel spongy. Follow these instructions to purge air from the jack's hydraulic system?
a. Turn the jack's release valve with the handle provided all the way in a clockwise direction until tight. Now turn the release valve two full
rotations in a counterclockwise direction.
b. Now put the pump handle in the pump handle receiver and activate the jack approximately 15 times.
c. Close the release valve by turning it clockwise until it stops. Pump the jack until the ram reaches maximum height.
d. Repeat steps "a" through "c" until all the air is purged out of the system.
5712
- 12 Ton Hydraulic Shop Press
5720
- 20 Ton Hydraulic Shop Press
5720AH
- 20 Ton Air/Hydraulic Shop Press
