Enerpac PR Air User Manual [en, es]

POWERFUL SOLUTIONS. GLOBAL FORCE.

L3085 Rev. C 12/12

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1.0 IMPORTANT RECEIVING INSTRUCTIONS

Visually inspect all components for shipping damage. Shipping damage is not covered by warranty. If shipping damage is found, notify carrier at once. The carrier is responsible for all repair and replacement costs resulting from damage in shipment.

2.0 SAFETY ISSUES

Read all instructions, warnings and precautions carefully. Follow any recommended safety

precautions to avoid personal injury or damage to the jack. Enerpac cannot be responsible for any damage or injury from unsafe use, lack of maintenance or incorrect operation. Do not remove warning labels, tags, or decals. In the event any questions or concerns arise, contact ENERPAC or a local Enerpac distributor for clariﬁ cation.

The maximum working pressure of the jack hydraulic system varies between 6,000 and 10,200 psi [414 and 703 bar], depending on jack model. Refer to pressure listings in Table 1, General Speciﬁ cations.

If you have never been trained on high-pressure hydraulic safety, consult your distributor or service center for a free Enerpac Hydraulic Safety Course.

A CAUTION is used to indicate correct operating or maintenance procedures and practices to prevent damage to, or destruction of equipment or other property.

A WARNING indicates a potential danger that requires correct procedures or practices to avoid personal injury.

A DANGER is only used when your action or lack of action may cause serious injury or even death.

Failure to comply with the following safety precautions could result in equipment damage and/or personal injury:

Instruction Sheet

Pow’r-Riser

Lifting Jacks

PR Series Air Operated Models

DANGER: To avoid serious personal injury, keep

hands and feet away from hydraulic cylinder and related components during jack operation.

DANGER: Do not handle pressurized lines. Escaping oil under pressure can penetrate the skin, causing serious injury. If oil is injected under the skin, see a doctor

immediately.

WARNING: The jack's internal relief valve must not be repaired or adjusted except by an authorized service

center. Never tamper with overload protection devices. Higher settings may result in equipment damage and/or personal injury.

CAUTION: When jack is not in use, fully retract the

cylinder and protect the entire unit from external damage.

Keep the jack clean, avoid weld splatter, and store in a clean dry area. INSPECT ALL JACK COMPONENTS BEFORE USE.

CAUTION: Keep the jack away from ﬂ ames and heat. For optimum performance, do not expose the jack to temperatures above 65 °C [150 °F].

WARNING: BE SURE LIFTING ARRANGEMENT IS

STABLE BEFORE LIFTING LOAD. Use jack only on a

solid and level surface, capable of supporting the load and the base of the jack. Always center the load on the lifting saddle of the jack. If the jack is not perpendicular to the load, slipping or loss of load is possible.

WARNING: Distribute the load evenly when performing lifts with multiple jacks. Failure to heed this warning may cause loss of load and/or failure of the jack, resulting in property damage and/or personal injury.

IMPORTANT: Hydraulic equipment must only be serviced by a qualiﬁ ed hydraulic technician. For repair service, contact the Authorized ENERPAC Service Center

in your area. To protect your warranty, use only ENERPAC oil.

WARNING: Wear proper personal protective gear when operating hydraulic equipment.

WARNING: The jack is to be used for lifting only! Support the load after completing the lift using approved accessories or by other appropriate means. Never get

under a load being supported only by the jack.

WARNING: Never exceed the rated capacity of the jack. Allow for a margin of safety that accounts for possible shifting loads or side loading conditions.

WARNING: Immediately replace worn or damaged parts with genuine ENERPAC parts. Standard grade parts will

break causing personal injury and property damage. ENERPAC parts are designed to fit properly and withstand high loads.

CAUTION: To avoid damage to jack internal components, do not continue pressurizing the jack cylinder after it reaches maximum extension or

retraction.

3.0 PRODUCT DATA

Table 1 - General Speciﬁ cations

Model psi bar

PRAMA060_ _L 6,000 414

Maximum Operating Pressure

Load Rating

Hydraulic Oil Type Enerpac HF (Refer to Table 8 for oil speciﬁ cations)

Maximum Hydraulic Oil Temperature 170 ºF [76 °C] Hydraulic Reservoir Oil Capacity

(approximate - when ﬁ lled to proper level)

Air Requirements (minimum) 50 CFM @ 80 psi [1416 l/min @ 5,5 bar]

Short Stroke

Models

Stroke Length Weight

inches mm Pounds Kg inches mm Pounds Kg

PRAMA06014L 14 356 390 177 PRAMA06027L 27 686 600 272 PRAMA10016L 16 406 510 231 PRAMA10027L 27 686 600 272

PRASA10016L 16 406 510 231 PRASA10027L 27 686 600 272

PRASA15016L 15.5 394 570 258 PRASA15027L 26.5 673 708 321

PRASA20016L 15.5 394 640 290 PRASA20027L 26.5 673 825 374

Note: Refer to Enerpac catalog for product external dimensions.

PRAMA100_ _L & PRASA100_ _L 9,700 669 PRASA150_ _L 10,200 703 PRASA200_ _L 10,200 703

Model US Tons Metric Tons kN

PRAMA060_ _L 60 54 533

PRAMA100_ _L & PRASA100_ _L 100 90 889 PRASA150_ _L 150 136 1333 PRASA200_ _L 200 181 1778

4.2 gallons [15,9 liters]

Table 2 - Stroke Lengths and Weights

Long Stroke

Models

Stroke Length Weight

Key:

1. Handle Lock Lever

2. Handle Assembly

3. Lifting Bar

4. Air Supply Valve

5. Control Valve, Manual

7. Air Line Lubricator

8. Reservoir Air Breather

9. Air Line Filter/Regulator

10. Air Inlet Connection (1/2" NPT)

11. Oil Fill Plug

12. Oil Filter

13. Hydraulic Cylinder

14. Hydraulic Reservoir

15. Oil Drain Plug

16. Air Mu er

17. Lifting Eyebolt*

18. Wheel Bearing Grease Fitting

19. Tire Air Valve

20. U-Ring Storage

Not present on all models.

410

RAISE

LOWER

Figure 1, Major Features and Components - PRAMA Series Models

Key:

1. Handle Lock Lever

2. Handle Assembly

3. Lifting Bar*

4. Air Supply Valve

5. Control Valve, Air Operated

6. Pendant

7. Air Line Lubricator

8. Reservoir Air Breather

9. Air Line Filter/Regulator

10. Air Inlet Connection (1/2" NPT)

11. Oil Fill Plug

12. Oil Filter

13. Hydraulic Cylinder

14. Hydraulic Reservoir

15. Oil Drain Plug

16. Air Mu er

17. Lifting Eyebolt

18. Wheel Bearing Grease Fitting

19. Tire Air Valve

20. U-Ring Storage

Not present on all models.

410 11

Figure 2, Major Features and Components - PRASA Series Models

4.0 INITIAL SETUP

4.1 Adding Oil

Before startup, remove the oil ﬁ ll plug (callout #11) and check oil level. Oil level should be about 1 inch [25 mm] below top of reservoir. Add Enerpac HF hydraulic oil to reservoir if necessary. See Section 6.1 for additional information.

4.2 Air Requirements

Lubricated air is necessary to provide shaft seal lubrication for the air motor, and to prevent rust. All models are equipped with an automatic air line lubricator set to feed approximately 3 drops per minute.

Before startup, check the level in the air line lubricator (callout #7) and add additional lubricant if needed. Use an SAE 10 [ISO 32] detergent oil or an approved antifreeze lubricant. See Section 6.4 for additional information.

A ﬁ lter/regulator with moisture trap (callout #9) is installed in the air line ahead of the motor. For e ciency of output and control of speed, use an air line of not less than 3/4 inch pipe size. Air pressure and ﬂ ow must be at least 50 CFM @ 80 psi

[1416 l/min

@ 5,5 bar]. The air inlet connection is a 1/2" NPT female thread. Be certain that compressed air is clean and dry. Moisture in the

air line can cause rust formation in the air motor and may result in reduced performance. Allowing excessive moisture or foreign particles to enter the air motor will void the Enerpac warranty.

4.3 Using the Jack for The First Time

Note: Refer to Section 5.0 for detailed jack operation instructions.

1. On PRAMA Series models, be sure that the control valve lever is in the center (neutral/hold) position.

Note: On PRASA Series models, the air operated control valve automatically returns to the center (neutral/hold) position when the pendant buttons are not depressed.

2. Connect an air hose at the air inlet connection (callout #10). Note: On PRAMA Series models, the motor will start immediately

when the air supply valve is opened. On pendant controlled PRASA Series models, the motor will start automatically when either pendant button is depressed.

3. Open the air supply valve (callout #4). Using the regulator knob, adjust the air pressure to a minimum of 80 psi [5,5 bar].

IMPORTANT: Perform the following step with no load on jack.

4. Check for proper operation by fully extending and retracting the cylinder (callout #13). Use the lever on the manual control valve (callout #5 - PRAMA Series models) or the buttons on the pendant (callout #6 - PRASA Series models) to control cylinder movement. To remove air from system, cycle the cylinder as needed until operation is smooth.

4.4 Using the Handle Assembly to Position the Jack

1. Push handle lock lever (callout #1) to release lock pin.

2. With lock pin released, position handle assembly (callout #2) to desired location and release handle lock lever (callout #1) to engage lock pin.

3. The jack can now be tilted back onto the wheels and pushed or pulled to the work area. Use caution when walking backwards.

4. If needed, the jack can be lifted using the lifting bar (callout #3 - if equipped) or the lifting eyebolt(s) (callout #17 - if equipped).

Note: Lifting bars are installed on short stroke PRAMA060, PRA_ A100 and PRASA150 Series models. Lifting bars are not used on any long stroke models or on short stroke model PRASA20016L.

All long stroke models are equipped with one lifting eyebolt. The short stroke model PRASA20016L is equipped with two lifting eyebolts. Lifting eyebolts are not present on short stroke PRAMA060, PRA_A100 and PRASA150 Series models.

WARNING: Lift the jack using only lifting eyebolt(s) or lifting bar. Never attempt to lift the jack by using the

handle assembly. The handle assembly is to be used only for transporting the jack on its wheels and for positioning the jack under the jacking point.

5. Using the handle assembly, adjust the jack position so that

the cylinder load cap is centered under the jacking point of the load.

WARNING: Be sure that the jack is positioned on a

solid and level support surface, with the lifting cylinder

perpendicular to the ground. Jacking at an angle can allow the jack to slip out of position, resulting in loss of load. As required, use a swivel load cap to properly engage angled lifting points. Refer to Section 5.5 for additional information.

5.0 OPERATION

5.1 Control Valves (See Figure 3)

4-Way Manual Valve: With pump motor running:

• Move lever to the extend position to raise the cylinder.

• Move lever to the retract position to lower the cylinder.

• Center position is neutral/hold. Cylinder stops and holds the

load. This is also referred to as the “idle” position.

4-Way Air Operated Valve with Pendant:

• To start motor and extend cylinder - press up-arrow button.

• To start motor and retract cylinder - press down-arrow button.

•

For neutral/hold - release both pendant buttons. Motor will stop.

Lifting speed and torque can be regulated by using the air pressure regulator. The regulator should be adjusted to 100 psi [7 bar] maximum with air motor running and air supply valve completely open.

IMPORTANT: Pressure settings of above 100 psi [7 bar] will result in reduced air motor life and will void product warranty.

Manual Valve: Center position is NEUTRAL/HOLD.

RETRACT

(lower)

Air Operated Valve: Stays in center neutral/hold position

until pendant down-arrow or up-arrow button is pressed.

(

Figure 3, Control Valve and Pendant Details

RETRACT

(lower)

)

EXTEND

(raise)

EXTEND

(raise)

5.2 Jacking Safely

You must know the weight of what you intend to lift and choose a jack with at least 20 percent additional capacity.

All persons operating the jack should obtain and be familiar with the American National Standards Institute rules that apply to hydraulic rams and jacks (ASME ANSI B30.1) or the equivalent standards used in your country or region.

WARNING:

Never place any part of your body under the load at any time while it is being lifted, lowered, or hydraulically supported by the Pow'r-Riser jack.

WARNING: The Pow'r-Riser jack is intended for lifting purposes only and should not be used to hydraulically support the load for any period of time after the lift has

been completed. Support the load with U-Rings or other suitable load supports immediately after it has been lifted to the desired height.

WARNING: Never leave the

Pow'r-Riser

jack unattended during operation, even for a brief period of time. Closely monitor jack operation at all times and be

prepared to stop lifting or lowering immediately.

WARNING: Do not use the

Pow'r-Riser

jack outdoors in windy conditions. Changes in wind direction or velocity could cause the load to become unstable and fall.

5.3 Operating Instructions (See Figures 3, 4 and 5)

TO RAISE THE LOAD:

1. Be certain that the jack is positioned on a solid and level surface, capable of supporting the load and the base of the jack. Be sure that the lifting cylinder is perpendicular to the ground. See Section 4.4 for additional jack positioning instructions.

2. If a high jacking point requires a taller jack, install extensions and spacers (optional accessories) on the cylinder as required. Refer to Section 5.4 for installation instructions and additional information about extensions and spacers.

3. Place a piece of plywood or other compression material (approximately 1/4" [6,3 mm] thick with good friction characteristics) between the cylinder load cap and the jacking point. This will provide a small amount of cushioning and will also help prevent damage to the jacking point.

4. To raise the load, open the air supply valve to start the motor. Then, move the control valve lever to the extend position. If jack is equipped with pendant, depress the up-arrow button to start motor and extend cylinder.

CAUTION: When lifting with more than one jack, be especially careful to keep the load level. Leveling is best

accomplished by throttling with the air supply valve or by alternating and stopping jacks to keep the load level enough so it remains stable.

5. When load has reached the desired height, move the control

valve lever to the center (neutral/hold) position. If jack is equipped with pendant, release up-arrow button to return valve back to the center (neutral/hold) position.

6. Be sure that the proper Enerpac U-Rings are installed on

the cylinder (refer to Section 5.6 for U-Ring installation and stacking instructions). If U-Rings are not used, be sure that other load supports of appropriate load rating are in place.

7. Move the control valve lever to the retract position. Allow the

load to lower until it is supported by the U-Rings or other load supports. Then, return the lever to the center (neutral/ hold) position. If jack is equipped with pendant, depress and release the down-arrow button as required, until the load is supported by the U-Rings or load supports.

WARNING: After lifting is completed, always support the load using the proper Enerpac U-Rings or appropriately rated load supports. Never rely on the

cylinder's hydraulic pressure to support the lifted load.

WARNING: Wait an appropriate amount of time before working under the load after it is supported by U-Rings

or load supports. Any settling of jack base or load supports into the ground below must not exceed 1/4 inch [6.4 mm]. If additional settling occurs, reposition jack or load supports on solid ground.

IMPORTANT: if there is to be no cylinder movement for more than one minute, it is recommended that the motor be turned o to prevent overheating of pump and air motor (models with manual control valve only).

TO LOWER THE LOAD:

1. Be sure the control valve lever is in the center (neutral/hold)

position. If jack is equipped with pendant, be sure that both buttons are released (not pressed) so that valve returns back to the center position.

2. Open the air supply valve. On models equipped with a

manual control valve, the motor will start.

3. Move the control valve lever to the extend position or depress

the pendant up-arrow button. Allow cylinder to advance a small amount, so that load is lifted o of U-Rings or clears the load supports. Then place the control valve lever in the center (neutral/hold) position or release the up-arrow button.

4. After the U-Rings or load supports are removed, move the

control valve lever to the retract position or depress the pendant down-arrow button to retract the cylinder.

CAUTION: Be careful while lowering to ensure that the

load is lowered evenly, so that load shifting does not

occur.

5. When load has been fully lowered, place the control valve

lever in the center (neutral/hold) position or release the pendant down-arrow button. On models with manual control valve, close the air supply valve to stop the motor.

AFTER COMPLETING THE JOB:

Fully retract the cylinder and close the air supply valve.

With the motor o , shift the control valve several times between the extend and retract positions to relieve system pressure.

Disconnect the air supply hose and remove any extensions or spacers from the cylinder. Place U-Rings (if used) on the storage rack provided on the jack.

Always store the jack and its accessories in a clean and dry area, free of moisture and direct sunlight.

5.4 Stacking Instructions - Extensions and Spacers (See Figure 4)

Extensions and spacers are available as optional accessories from your Enerpac authorized distributor. They may be ordered individually or in sets. Refer to tables 3 and 4 for additional information.

PRE Series extensions allow the jack's useful lifting height to be increased in increments of 5, 7, 9 or 11 inches [127, 178, 229 or 279 mm]. On short stroke Pow'r-Riser models only, larger extensions can also be used, allowing the useful lifting height to be increased in increments of 14 or 18 inches [356 or 457 mm].

PRS Series spacers allow additional ﬁ ne adjustment of the extension stack height. They may be used alone or in conjunction with PRE Series extensions.

Table 3 - PRE Series Extensions (optional accessories)

Extension

Model

PRE5 5 127 PRE7 7 178 PRE9 9 229

PRE11 11 279

PRE14 * 14 356 PRE18 * 18 457

PRES6024

Extension Set

Includes PRE5, PRE7, PRE11 and PRE18 (1 each).

Thickness (each)

inches mm

* For use on short stroke jacks only (models ending in “14L” or “16L”)

Table 4 - PRS Series Spacers (optional accessories)

Spacer Model

PRS1 1 25 PRS2 2 51 PRS3 3 76

PRS4 Spacer Set Set includes PRS1, PRS2 and PRS3 (1 each).

CAUTION:

Never exceed the maximum additional stack height for your jack model. Refer to Table 5 for additional information.

Figure 4, Extension and Spacer Installation (typical)

Thickness (each)

inches mm

Load Cap (see Table 6)

PRS Series Spacer (see Table 4)

PRE Series Extension (see Table 3)

Important: Refer to Table 5 for maximum additional stack height information.

Cylinder Rod

WARNING: Failure to observe the following instructions could allow load to shift or drop. Serious personal injury and/or property damage may result.

When using PRE Series extensions and/or PRS Series spacers, always obey the following rules:

• For loads up to 60 tons [54 metric tons]: Any two PRE Series extensions may be included in the stacking arrangement, provided that the maximum stack height (See Table 5) is not exceeded and the following exceptions are observed:

1) Jack model

PRAMA06014L: Only one PRE18 extension

can be included in the stacking arrangement.

2) All jack models ending in “16L”:

Only one PRE11, PRE14

or PRE18 extension can be included in the stacking arrangement.

3) All jack models ending in “27L”: Extensions PRE14 and

PRE18 cannot be included in the stacking arrangement. These

extensions are designed for short stroke jacks only (models ending in “14L” and “16L”).

• For loads over 60 tons [54 metric tons], or strokes over

14 inches [356 mm]: Only one PRE Series extension and one PRS Series spacer can be included in the stacking arrangement.

• Never exceed 3 inches [76 mm] in total spacer height.

• Never exceed the maximum additional stack height for your jack model. Refer to Table 5, dimension “X”.

Table 5 - Maximum Additional Stack Height Using

Optional PRE Series Extensions and PRS Series Spacers

Maximum Additional Stack

Jack Model

PRAMA06014L 32 813 PRAMA06027L 11 279 PRAMA10016L 21 533 PRAMA10027L 11 279

PRASA10016L 21 533 PRASA10027L 11 279 PRASA15016L 21 533 PRASA15027L 11 279 PRASA20016L 21 533 PRASA20027L 11 279

Height (dimension “X”)

inches mm

5.5 Load Caps

A non-swivel load cap is included with the jack as standard equipment. A swivel load cap is available as an optional accessory. Refer to Table 6 for a list of load cap model numbers.

IMPORTANT: Use a swivel load cap to properly engage angled lifting points. A swivel load cap should always be used when the amount of misalignment between the standard load cap and the lifting point is too large to be compensated for by use of plywood or other suitable compression material alone.

Table 6 - Load Caps

Load Cap Model Numbers

Jack Model

PRAMA06014L PRAMA06027L PRAMA10016L PRAMA10027L

PRASA10016L PRASA10027L PRASA15016L PRASA15027L PRASA20016L PRASA20027L

Non-Swivel

Load Cap (standard)

42208E PRTS60

42208E PRTS150

42208E PRTS200

Swivel Load Cap

(optional accessory)

5.6 U-Ring Stacking Instructions (See Figure 5)

Pow'r-Riser U-Rings (optional accessories) allow positive mechanical load holding of a lifted load. The U-Rings are placed on top of the cylinder housing and around the extended cylinder rod. They are available in ﬁ ve di erent lengths for each Pow'rRiser model.

To help ensure proper alignment and installation, the top surface of the cylinder housing and the top surface of each U-Ring contains a raised locator. The bottom surface of each U-Ring contains a mating recess.

The U-Rings are made of steel and aluminum. A steel U-Ring must always be positioned at the top and bottom ends of the U-Ring stack. The aluminum U-Rings must always be located in the middle of the stack, between the two steel U-Rings. This stacking arrangement helps prevent damage to the aluminum U-Rings.

CAUTION:

top or bottom end of the U-Ring stack.

Install U-Rings as described in the following steps:

1. Using the jack, raise the load to the desired lifting height. Refer to the instructions in Section 5.3 of this manual.

2. Place one steel U-Ring on top of the cylinder housing, around the extended cylinder rod.

3. As required, place one or more aluminum U-Rings on top of the steel U-Ring, around the extended cylinder rod. The quantity of aluminum U-Rings to be installed will vary, depending on jack model, lifting height and the U-Ring set being used. Refer to Table 7 for additional information.

4. Place a second steel U-Ring at the top of the U-Ring stack.

IMPORTANT: Be sure the arrow on each U-Ring is pointing up. Be sure all locators are fully engaged in the mating recesses of the U-Rings.

CAUTION: Pinch point hazard: In the following step, keep hands and ﬁ ngers clear of area between load support ring and top of U-Ring stack.

Never position an aluminum U-Ring at the

Jack Model

1 inch

[25 mm]

Table 7 - U-Ring Information

U-Ring Size and Model Number

3 inch

[76 mm]

4-1/2 inch [114 mm]

5-1/2 inch

[140 mm]

10 inch

[254 mm]

U-Ring

Set Model

Number

Items Included in Each U-Ring Set

2x 1x 2x 1x

PRAMA06014L

PRAMA06027L

PRAMA10016L PRU11 PRU13 PRU14 - PRU110 PRUS126 PRU11 PRU13 PRU14 PRAMA10027L PRU11 PRU13 PRU14 - PRU110 PRUS137 PRU11 PRU13 PRU14 PRU110

PRASA10016L PRU11 PRU13 PRU14 - PRU110 PRUS126 PRU11 PRU13 PRU14 PRASA10027L PRU11 PRU13 PRU14 - PRU110 PRUS137 PRU11 PRU13 PRU14 PRU110 PRASA15016L PRU151 PRU153 - PRU155 PRU1510 PRUS1526 PRU151 PRU153 PRU155 PRASA15027L PRU151 PRU153 - PRU155 PRU1510 PRUS1537 PRU151 PRU1510 PRU155 PRASA20016L PRU201 PRU203 - PRU155 PRU1510 PRUS2026 PRU201 PRU203 PRU205 PRASA20027L PRU201 PRU203 - PRU155 PRU1510 PRUS2037 PRU201 PRU2010 PRU205 -

5. Slowly lower the cylinder rod until the weight of the load

PRU11 PRU13 PRU14 - PRU110 PRUS126

PRU11 PRU13 PRU14 - PRU110 PRUS137 PRU11 PRU13 PRU14 PRU110

PRU11 PRU13 PRU14 -

6.0 MAINTENANCE

is supported by the U-Rings. Refer to the information in Section 5.3 for jack operating instructions.

IMPORTANT: Follow all applicable work rules and regulations in e ect at your facility or worksite. The use of auxiliary stands, blocking or other additional load supports may be required even when U-Rings are installed.

6.1 Maintain Oil Level in Hydraulic Reservoir

Check the hydraulic oil level every 30 days. Oil level should be approximately 1 inch [25 mm] below top of reservoir, with cylinder fully retracted and motor o .

If oil level is low, add Enerpac HF hydraulic oil as required. If Enerpac HF is not available at the work site, use an equivalent

Steel U-Ring

(top)

Aluminum U-Rings

hydraulic oil that meets the speciﬁ cations shown in Table 8.

Table 8 - Oil Speciﬁ cations

Locator (on each U-Ring and at top of cylinder housing)

ISO Grade Viscosity Index Viscosity at 210 °F Viscosity at 100 °F Viscosity at 0 °F API Gravity Flash, C.O.C. °F Pour Point, °F Para nic Base Color

100 min

42-45 S.U.S.

150-165 S.U.S.

<12000 S.U.S.

31.0-33.0 400

-35

Blue

Steel U-Ring

Load Cap

Load Support Ring

(bottom)

Recess of U-Ring

Assembled View

Figure 5, U-Ring Stacking Arrangement (typical)

CAUTION: Failure to use the proper oil may result in damage to jack hydraulic components and will void the product warranty. Use of Enerpac HF oil is strongly

recommended. IMPORTANT: Be sure that the oil is clean. If the oil has a milky,

cloudy or dark appearance, it should be changed immediately as described in Section 6.2.

6.2 Changing the Oil (See Figure 6)

Change the oil at least every 12 months. Note: The following conditions will require more frequent oil

changes:

• Rigorous duty, where oil temperature may reach 150 °F [60 °C].

• A high humidity environment and/or extreme changes in temperature that can result in condensation inside the reservoir.

• Dirty or dusty environments that may contaminate the oil.

Change the oil as described in the following steps:

1. Be sure that cylinder is fully retracted and that the air line is disconnected.

IMPORTANT: The 5 gallon [18,9 liter] hydraulic reservoir holds approximately 4.2 gallons [15,9 liters] of oil when ﬁ lled to the proper level with cylinder fully retracted and motor o . Dispose of used oil in accordance with all applicable laws and regulations.

2. Loosen and remove oil drain plug at bottom of reservoir. Allow used oil to drain into a suitable container.

3. Clean and reinstall oil drain plug.

4. Remove, clean and reinstall the reservoir air breather. It is located on the reservoir top cover plate, under the air ﬁ lter/ regulator assembly.

5. Loosen oil ﬁ ll plug at top of reservoir. Slowly ﬁ ll the reservoir until the oil level is about 1 inch [25 mm] below top of reservoir. Use Enerpac HF hydraulic oil or a suitable equivalent that meets the speciﬁ cations shown in Table 8.

6. Reinstall oil ﬁ ll plug.

7. Remove the old oil ﬁ lter and replace it with a new one of the proper speciﬁ cations. Catch any spilled oil in a suitable container.

8. Raise and lower the cylinder several times to check for proper operation before placing the jack back into service.

Air Breather

(under ﬁ lter/ regulator)

Oil Fill Plug

Oil Filter

RAISE

LOWER

Drip Adjustment

Fill Plug

Air Regulator

Air Line Lubricator

Filter Bowl

Lubricant Reservoir

Water Drain

Figure 7, Air Line Lubricator and Filter/Regulator

6.5 Air Mu er (See Figure 8)

Every 30 hours of operation:

• Check the air mu er for dirt or debris. If clogged, replace the mu er with a new one of the same speciﬁ cations.

Note: Air mu er design and appearance will vary. On jacks equipped with a Gast manufactured air motor, the felt pads inside the mu er can be removed, cleaned and replaced.

6.6 Wheels and Tires (See Figure 8)

Every 30 hours of operation:

• Check the tires for wear or damage. Replace as required.

• Check the tire inﬂ ation pressure. Each tire should be inﬂ ated to 90 psi [6,2 bar].

Every 12 months:

• Lubricate both wheel bearings with a high quality wheel bearing grease. Each wheel hub contains a grease ﬁ tting.

Oil Drain Plug

Figure 6, Oil Change

6.3 Air Line Filter/Regulator (See Figure 7)

Every 30 hours of operation:

• Check the ﬁ lter bowl for water. Drain any water if present.

• Inspect air ﬁ lter element (inside ﬁ lter bowl). Replace ﬁ lter element if dirty.

6.4 Air Line Lubricator (See Figure 7)

Before each use, check the ﬂ uid level in the air line lubricator and add additional lubricant if needed. Use an SAE 10 [ISO 32] detergent oil or an approved antifreeze lubricant.

Check for an oil drip speed of approximately 3 drops per minute. Adjust if necessary.

Air Mu er

(appearance may vary)

Tire Air Valve

Wheel Bearing Grease Fitting

Figure 8, Additional Maintenance Items

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Enerpac PR Air User Manual [en, es]

Specifications and Main Features

Frequently Asked Questions

User Manual