Instruction Sheet. LB Series Lifting Bags CA Series Lifting Bag Controllers. L2753 Rev. B 01/ IMPORTANT RECEIVING INSTRUCTIONS 2.

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1 Instruction Sheet POWERFUL SOLUTIONS. GLOBAL FORCE. LB Series Lifting Bags CA Series Lifting Bag s L2753 Rev. B 01/09 Index: English Français Deutsch Italiano Español Nederlands Portuguese Finnish Norwegian Swedish 中文 IMPORTANT RECEIVING INSTRUCTIONS Inspect bag for any visible damage (punctures, cuts, abrasions cracking, etc.). For your safety, do not use lifting bag or controller if damaged. 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 INTENDED USE Enerpac lifting bags and lifting bag controllers are designed to provide controlled lifting of loads using regulated compressed air or pressurized water. 3.0 LIFTING BAG SAFETY PRECAUTIONS DANGER: Improperly supported loads or insufficient load surfaces can create a BURSTING HAZARD as lifting bag pressure increases. DANGER: If the lifting bag reinforcing cord is visible, BURSTING DANGER exists. Do not use any lifting bag with visible reinforcing cord. WARNING: Failure to observe the following safety precautions and instructions may result in serious personal injury or death. 3.1 Precautions - Working With Lifting Bags Wear appropriate personal protective equipment (PPE), such as safety helmet, safety glasses and gloves. Never work or reach under a lifted load without safety supports in place! Never stand in front of load or pressurized lifting bag. Ensure that substructure is level, stable and capable of holding the load. 3.2 Precautions - Lifting Bag Use and Care Never exceed maximum working pressure of 116 psi [8 bar]. Never leave an inflated lifting bag unattended, even if the air valve is closed. Ensure that both the lifting bag and the load to be lifted are visible to the operator. Never place more than two bags on top of each other to support a load. If one bag is larger than the other, the larger bag must be placed on the bottom. Protect the lifting bag from heat, flame, acid and sharp objects. Never use a lifting bag on surface contaminated by oils or grease. Inflate lifting bags using only regulated compressed air or pressurized water. [116 psi; 8 bar max.] Do not use flammable gasses or liquids to inflate lifting bags. Do not use aggressive or corrosive gasses or liquids to inflate lifting bags. Use caution when using compressed air. Always wear eye protection. 3.3 Precautions - Lifting Bag Condition Inspect lifting bag before each use. Refer to Section 9.1. Do not use the lifting bag if reinforcing cord is visible. Inspect and pressure test lifting bag whenever there exists any doubt regarding lifting bag reliability or safety. Protect lifting bag from welding sparks and hot objects or surfaces. Keep lifting bag out of direct sunlight. Enerpac lifting bags are NOT REPAIRABLE! 4.0 INTRODUCTION This document contains information about lifting bags, controllers and basic instructions for use. The selection and application of a lifting bag depends on various factors, such as lifting requirements, capacities, lifting height, shape of object, etc. Enerpac assumes no responsibility for personal injuries or material damages arising from improper use or misuse of lifting bags and their related subassemblies and components. The figures shown in this document are included for informational purposes only. 1

2 5.0 SET-UP AND OPERATION 5.1 Before You Begin Wear personal protective equipment (PPE), such as safety helmet, safety goggles and gloves. Read, understand and observe the safety precautions in sections 3.0 through 3.3 of this document. Be certain that the work area is well lighted. Carry the lifting bag with the inflation nipple facing UP to avoid impact damage. Cover inflation nipple with dust cap until inflation hose is connected. Refer to the tables in Section 12.0 for lifting bag weights. When the surface temperature of the object to be lifted exceeds 55 C [131 F], protect the bag from heat. Temperatures exceeding this limit can damage the lifting bag and could create a bursting hazard. 5.2 Site Preparation Clean the work area of all dirt, debris and objects that might puncture or cut the lifting bag. 5.3 Maximum Lifting Capacity The maximum lifting capacity is printed on a label located on the lifting bag top surface. See Figure 1. The label contains other important specifications, such as maximum working pressure, and maximum air requirement (volume). Lifting capacity is reduced as the bag inflates and surface contact is reduced. Refer to Section 7.2. Height vs. Lifting Capacity graphs are located in Section Refer to these graphs BEFORE proceeding with lifting. 5.4 Operation Using Standard Compressed Air The lifting bag is typically inflated with air supplied by a plant air system, construction air compressor or portable air compressor. For best performance, the air pressure regulator should be set at 116 psi [8 bar]. Use dry and filtered air only. A compatible controller (see figures 2 and 3) must be connected between the air source and lifting bag. WARNING: Air pressure must never exceed 116 psi [8 bar]. WARNING: Always connect a controller between the air source and the lifting bag. Never attempt to connect the lifting bag directly to the pressure regulator or to an unregulated air source. Important: Inflate lifting bag with air only. Never use other gasses. Figure 1, Lifting Bag Specification Label (typical). 5.5 Operation Using Compressed Air Cylinders Compressed air cylinders, regulators and related components are NOT AVAILABLE from Enerpac. CAUTION: Compressed air cylinders operate at high pressure. To prevent personal injury, operation of lifting bags with compressed air cylinders must be performed only by trained, experienced and qualified personnel. 5.6 Operation Using Water The lifting bag is normally used as an air operated device. However, it can also be inflated hydraulically using clean water from a pump, tank or other regulated source. Water pressure should not exceed 116 psi [8 bar]. The Enerpac universal controller (See Figure 2) is mandatory for water operation. A special water service inflation hose with builtin deflation ball valve (available from your Enerpac distributor) is also required when using water. WARNING: Never use hydraulic oil, alcohol, anti-freeze or other non-water liquids to inflate a lifting bag. They will damage the bag s styrene-butadiene rubber (SBR) material and may result in a bursting hazard. 6.0 CONTROLLERS 6.1 s Special safety couplers are used between the controller and the lifting bag. The safety couplers are intended to prevent accidental disconnection of the lifting bag hose(s) while the lifting bag is in use. To couple a safety coupler: Push the male coupler end firmly into the opening of the female coupler. Listen for an audible click. To uncouple a safety coupler: Push the male coupler end toward the female coupler end. Slide back the outer sleeve on the female coupler end. Pull the male coupler end out of the female coupler end. Note: air inlet connection for US models is a standard 1/4" industrial interchange coupler. Inlet connection style may vary for controllers sold in Europe, Asia and other regions. 6.2 Making s (All Models) Refer to figures 3 through 7 as required. Note: If the inflation hose will be disconnected later (while the lifting bag is supporting a load) a special whip hose must be used. The whip hose contains a built-in shutoff valve that, when closed, retains air (or water) inside the bag. If the inflation hose will remain connected during the entire inflate/deflate process, the whip hose is not required. Make connections as described in the following steps: 1. Connect the whip hose (if used) to the lifting bag. 2. Connect one end of the inflation hose to the controller outlet. Connect the other end of the inflation hose to the whip hose (if used) or to the lifting bag. If using water (universal controller only): Be sure to use the special water service inflation hose. This hose can be ordered from your Enerpac distributor. CAUTION: Avoid excessively long hose lengths. Both the load and the lifting bag must be visible to the operator as the lift is being conducted. 2

3 3. If using a Y connector and two lifting bags, connect the second lifting bag in the same manner as described in steps 1 and Place the lifting bag(s) in the desired position under the load. 5. Universal controller only: Be sure the controller ball valve is closed. 6. If using air: Connect the air supply hose from the air source to the inlet connection on the controller. 7. If using water (universal controller only): Connect the water supply hose from the water source to one end of the adapter hose. Connect the other end of the adapter hose to the controller inlet connection. Note: Adapter hose style will vary, depending on supply hose connection. Adapter hoses are available from your Enerpac distributor. CAUTION: When using a water pump or other highpressure water source, water pressure must be regulated and must not exceed 116 PSI [8 bar]. 6.3 Deadman Operation (Air Only) CAUTION: Lifting bags must be properly supported, positioned and operated to prevent personal injury and property damage. Refer to sections 7.1 through 7.8 of this document for important recommendations and precautions. Important: Refer to Section 11.0, Cold Weather Operation, if lifting bag(s) must be operated in low ambient temperatures. To operate the controller: 1. Check pressure gauge on the plant air supply, air compressor or other air source (116 psi [8 bar] maximum). 2. If a whip hose is installed between the inflation hose and the bag, be sure that the air-shutoff valve is open. 3. Depress the (+) button on the controller to slowly inflate the lifting bag. If using more than one bag, inflate each bag as needed so that the load does not shift as it is lifted. Important: If the load cannot be lifted evenly, additional lifting bags with separate controllers may be required. CAUTION: Do not exceed maximum lifting height for lifting bag(s) being used. Refer to sections 12.0 and WARNING: Before deflating lifting bag(s) be certain no persons are working under the load. 4. Depress the (-) button on the controller to slowly deflate the lifting bag and lower the load. Outlet (to bag) Relief Valve & Bleeder Valve Ball Valve Pressure Gauge Inlet (regulated air or water) Figure 2, Universal (Model CACW1). Air Outlet (to bag) Air Pressure Gauge Air Outlet s (to bags) Relief Valve Inflate Button ( + ) RED Deflate Button ( - ) GREEN Air Inlet (from regulator) Single Deadman Dual Deadman Note: The dual deadman controller has two air outlet connections and a second set of controls on the opposite side. Figure 3, Deadman Style Lifting Bag s (Models CACG1 and CACG2). 3

4 Air-Shutoff Valve Whip Hose CAUTION: Do not exceed maximum lifting height for lifting bag(s) being used. Refer to sections 12.0 and 13.0 of this document. WARNING: Before deflating lifting bag(s) be certain no persons are working under the load. 5. As required, slowly turn the bleeder valve knob counterclockwise to relieve bag pressure and deflate the bag. Turn the knob clockwise to stop deflation. The knob has a range of about three turns from fully open to fully closed. See Figure 5. Inflation Hose OPEN Lifting Bag Deadman Important: Enerpac deadman style controllers are designed for use with AIR only. Do not attempt to use with water. CLOSE Air Inlet Supply Hose 116 psi [8 bar] 10 CFM Note: Bleeder valve is for use with AIR only. Valve should remain fully closed at all times when using water. Customer Supplied Figure 4, Deadman s (typical). 6.4 Air Operation - Universal Regulated Air Source CAUTION: Lifting bags must be properly supported, positioned and operated to prevent personal injury and property damage. Refer to sections 7.1 through 7.8 of this document for important recommendations and precautions. Important: Refer to Section 11.0, Cold Weather Operation, if lifting bag(s) must be operated in low ambient temperatures. To operate the controller: 1. Be sure that the bleeder valve is closed (knob turned fully clockwise until it stops). See Figure If a whip hose is connected between the inflation hose and the lifting bag, be sure that the shutoff valve is open. See Figure Check pressure gauge on the plant air supply, air compressor or other air source (116 psi [8 bar] maximum). 4. As required, slowly open the controller ball valve to inflate the lifting bag. Ensure that the load is being lifted evenly. If using more than one bag, inflate each bag as needed so that the load does not shift as it is lifted. Important: If the load cannot be lifted evenly, additional lifting bags with separate controllers may be required. Figure 5, Bleeder Valve (universal controller only). 6.5 Water Operation - Universal CAUTION: Lifting bags must be properly supported, positioned and operated to prevent personal injury and property damage. Refer to sections 7.1 through 7.8 of this document for important recommendations and precautions. Important: Do not use lifting bag(s) with water if ambient temperatures are near, at or below 32 F [0 C]. To operate the controller: 1. Be sure that the bleeder valve is closed (knob turned fully clockwise until it stops). See Figure 5. CAUTION: To prevent water spray from controller, keep the bleeder valve fully closed at all times during water operation. 2. If a whip hose is connected between the inflation hose and the lifting bag, be sure that the shutoff valve is open. See Figure Be sure that the inflation hose ball valve is closed, so that water flows from the controller to the bag. See Figure Check the pressure gauge on the water supply. Verify that water pressure is present and that it does not exceed 116 psi [8 bar]. 5. As required, slowly open the controller ball valve to inflate the lifting bag. Ensure that the load is being lifted evenly. If using more than one bag, inflate each bag as needed so that the load does not shift as it is lifted. 4

5 AIR Shutoff Valve Inflation Hose Whip Hose Lifting Bag Relief Valve & Bleeder Valve Ball Valve Universal Regulated Air Source Air Inlet Supply Hose (Customer Supplied) 116 psi [8 bar] 10 CFM Figure 6, Universal s, Air (typical). Keep bleeder valve closed at all times when using water. Shutoff Valve WATER Inflation Hose Ball Valve Inflation Hose (water service) Whip Hose Lifting Bag Relief Valve & Bleeder Valve Garden Hose Ball Valve Universal Water Supply Hose Tap Water Supply psi [ bar] (typical) Water Inlet Garden Hose Adapter Hose Adapter Hose Water Supply Hose (Alternate water hose arrangement for use with water pump.) Water Pump 116 psi [8 bar] 10 CFM Customer Supplied Figure 7, Universal s, Water (typical). 5

6 Important: If the load cannot be lifted evenly, additional lifting bags with separate controllers may be required. CAUTION: Do not exceed maximum lifting height for lifting bag(s) being used. Refer to sections 12.0 and 13.0 of this document. Maximum lifting height. Maximum lifting capacity at maximum lifting height. Refer to the tables in Section Also refer to the graphs in Section 13.0 for application range and lifting height vs. weight ratios. WARNING: Before deflating lifting bag(s) be certain no persons are working under the load. 6. As required, deflate the lifting bag as described in steps a and b: a. Close the controller ball valve. Shut-off water supply. b. Slowly open the inflation hose ball valve. Water from the bag will begin draining from the valve port, and the bag will begin to deflate. Close the valve to stop deflation. Bag slightly inflated: Lowest Lifting Height Maximum Contact Surface Maximum Lifting Capacity LOAD 6.6 After Lifting is Completed 1. Be sure that all lifting bags are fully deflated. Shut-off air or water source. 2. Remove the lifting bag(s) from beneath the load. To prevent damage, always remove the bag using straps or by grasping the bag surface. Do not pull on the inflation hoses when removing a lifting bag. 3. Disconnect hose(s) from between lifting bag(s) and controller. 4. Disconnect hose(s) from between controller and source (air or water). 5. Clean and inspect the lifting bag(s) as described in Section 8.0 of this document. 6. Store the lifting bag(s) as described in Section 10.0 of this document. Always install dust cap on inflation nipple when lifting bag is not in use. WARNING: Never attempt to readjust, disable or tamper with safety relief valve(s). Bag 50% inflated: Increased Lifting Height Reduced Contact Surface Reduced Lifting Capacity Contact Surface Figure 8, Lifting Bag Slightly Inflated. LOAD Important: Enerpac lifting bag controllers are not user serviceable. Take the controller to an Authorized Enerpac Service Center if repairs are needed. 7.0 LIFTING GUIDELINES AND PRECAUTIONS 7.1 Basic Lifting Considerations Protect the lifting bag from sharp objects, using flexible or nonflexible mats. When placing a lifting bag on the ground, cribbing, mats or other surface, be certain that the load bearing surface and support structure (if used) will be able to support the total weight of the object being lifted. 7.2 Lifting Capacity The amount of weight that can be lifted is directly related to the amount of surface area in contact with the load. See Figure 8. As the lifting bag fills, it develops a spherical shape, Lifting force is reduced as the lift height increases. See Figure 9. When fully inflated, the contact surface area is reduced to its minimum area, and the lifting height also reaches its maximum height. The maximum lifting capacity is reduced to its lowest level. See Figure 10. To safely and correctly operate the lifting bag, a user must know: Maximum lifting capacity. Bag 100% inflated: Maximum Lifting Height Minimum Contact Surface Minimum Lifting Capacity Contact Surface Figure 9, Lifting Bag 50% Inflated. LOAD Contact Surface Figure 10, Lifting Bag 100% Inflated. 6

7 7.3 Using Supports When there is more than 2-3/4" [70 mm] of space between the ground and the object to be lifted, build a firm foundation under the bag. There should be just enough space to insert the deflated bag under the load. The upper surface of the foundation should be flat, without any gaps. A lifting bag is not designed to span surface gaps greater than 1/8" [3 mm]. Refer to Figures 11 and 12 for safety support examples. Have sufficient personnel available to continuously add safety supports as needed. When lowering a load, slowly deflate the lifting bag, allowing the object load to rest entirely upon the safety supports when the bag is near the deflated position. Remove the lifting bag foundation incrementally, in the same fashion as the load was lifted. LOAD Figure 11, Load Supported by Blocking, Lifting Bag Deflated. WARNING: With any lifting operation, the safety support structures (cribbing, matting, blocking, etc.) are of essential importance. Never allow persons to work under a load supported only by an inflated lifting bag or bags. WARNING: Never leave an inflated lifting bag unattended for any length of time. LOAD 7.4 Increasing Lifting Height Using one larger bag is always easier and safer than using two smaller bags. Up to two lifting bags can be stacked in order to increase lifting height. Always place the next size smaller bag in the center - and on top - of the larger one. See Figure 13. WARNING: When using two bags, always place the smaller bag on top of the larger one. NEVER stack more than two lifting bags one on top of another. It is important to note that using two stacked lifting bags only increases the lifting HEIGHT. The lifting capacity (load) is NOT increased. The combined lifting capacity of the bags is equal to the lifting capacity of the smaller bag. Figure 12, Lifting Bag Inflated Under Load. Stacking Arrangement: Smaller Bag (on top) Larger Bag (on bottom) LOAD Contact Surface Figure 13, Using Two Lifting Bags to Increase Lifting Height. 7

8 LOAD 7.5 Increasing Lifting Capacity (weight) Figure 14, Using Two Lifting Bags to Increase Lifting Capacity (typical). A side-by-side arrangement using two or more lifting bags will increase the amount of weight that can be lifted. See Figure Lifting a Cylindrical Object Large cylindrical objects, such as pipes or tanks, may require two or more lifting bags. When using multiple bags to lift a cylindrical object, inflate the bags on both sides of the object at the same time to minimize the chances of the object shifting or rolling. See Figure Lifting Objects With Unusual Shapes When lifting I-beams or pipes, problems can arise because the object does not contact the entire surface of the bag. For this reason, supporting material (such as a steel plate or fiberglass board of appropriate strength) should be inserted between the lifting bag and the object to be lifted. This will help equally distribute the lifting force over the entire lifting surface of the lifting bag. See Figure 16. Figure 15, Lifting a Cylindrical Object. 7.8 Separating and Pushing Objects Lifting bags can also be used to separate and to move objects. If an object has thin walls that could be bent or broken by the pressure of the lifting bag, the bag should be positioned against a rib, pillar, or another tough and rigid element of the object that is to be moved. A suitable object (such as a wide steel or fiberglass board) can be placed between the lifting bag and the object to increase the surface area upon which the lifting bag will exert force. See Figure 17. Figure 16, Lifting Objects with Unusual Shapes. Solid Fixed Object Object to be Moved Figure 17, Separating and Pushing Using Lifting Bags. 8

9 8.0 CLEANING Clean the lifting bag after each use. To remove accumulated dirt or mud from the lifting bag surface, use a dry brush with hard bristles. Move the brush in all directions. After cleaning all the accumulated dirt, soak remaining spots with a light solution of warm water and dishwashing detergent. Use a brush to remove any remaining dirt. Important: To prevent cutting or tearing the lifting bag, Do not use sharp objects to remove dirt from the bag surface! Remove any oil or grease. Oil or grease spots can cause lifting bags to slide. Prolonged contact with petroleum based fluids should be avoided since these fluids can cause premature degradation of the lifting bag. After washing, rinse the lifting bag surface with cold, fresh water. A strong water jet will usually remove any remaining dirt and detergent from the lifting bag surface. Let the lifting bag air-dry after washing and rinsing is completed. To prevent damage, do not place the lifting bag in direct sunlight. CAUTION: Do not attempt to quicken the drying process by placing the lifting bag in a dryer or close to a source of heat. Heat may weaken and damage the bag. 9.0 INSPECTION AND TESTING 9.1 Inspection Before Each Use It is strongly recommended that the lifting bag be inspected before each use. Refer to the following steps for procedure: 1. Inspect the lifting bag inflation nipple. It must not be broken, cut or have thread damage. 2. With the bag fully inflated with air, make the following visual checks and inspections BEFORE using the bag: 3. Check for visible cord threads. Do not use lifting bag if cord threads are visible. 4. Check the bag surface for boils, blisters, bulges and other imperfections. Do not use lifting bag if any of these imperfections are present. 5. Check the bag surface for cracks. Do not use lifting bag if cracks are present. 6. Check for ply separation. Visible ply separations are not acceptable. If air or water remains captured anywhere in the bag, the bag should be replaced. Note: A checklist is provided at the end of this document, after Section Copy and complete the checklist as required. Maintain a record of inspections for future reference. Important: Pressure test lifting bags whenever there exists any doubt regarding lifting bag future reliability or safety. Allow only trained and experienced personnel with appropriate facilities and equipment to perform pressure testing STORAGE Store lifting bags and hoses in a cool and dry place, away from direct sunlight and other sources of ultraviolet radiation. Lifting bags should not be stored in sealed containers or other enclosures that will completely block the surrounding airflow. Do not store the lifting bags in environments containing high concentrations of humidity or atmospheric ozone. When storing lifting bags in the horizontal position, be sure that the inflation nipple faces in a direction so that can be easily seen when the lifting bag is to be moved. Be careful not to damage the lifting bag inflation nipple during lifting bag transit or storage. Keep the dust cap installed on the nipple when lifting bag is not in use COLD WEATHER OPERATION Operation of lifting bags at or below 32 F [0 C] is not recommended. Keep lifting bags and equipment in a warm place until ready for use. Bags and equipment must be internally dry before use in freezing or near freezing weather. Even when ambient air temperature is moderately low, compressed air can cause the lifting bag internal temperature to drop to -30 F [-34 C] or even lower. Temperature affects both lifting bag and hose flexibility. Performance and safety factors are significantly reduced at lower temperatures. In cold weather, operate lifting bags only at reduced pressures for safety. Use caution with regard to slippery surfaces when external ice is present. Increase safety distance and danger zone margins when the weather is cold or below freezing, especially when ice is present. WARNING: Do not use alcohol or anti-freeze in lifting bags. These chemicals are not compatible with styrenebutadiene rubber (SBR) and will cause permanent damage. Other deicing chemicals may also react with SBR and should not be used. CAUTION: Enerpac lifting bags are NOT REPAIRABLE! Damaged lifting bags must be discarded and replaced. 9.2 Pressure Testing and Usable Service Life It is recommended that all lifting bags be pressure tested with water at 116 psi [8 bar] at least every 5 years to check for leaks. Lifting bags over 10 years old should be pressure tested with water at least once per year. Due to natural deterioration of the lifting bag rubber material, it is strongly recommended that a lifting bag be discarded after 15 years, even if it passes pressure testing and visually appears to be in good condition. 9

10 12.0 LIFTING BAG SPECIFICATIONS Model Number Table 1A - Specifications, Enerpac Air Lifting Bags, Models LB3 through LB74 - Imperial Measurements Max. Lifting Capacity* [US tons] Max. Lifting Height* [inches] Bag Dimensions (uninflated) Length [inches] Width [inches] Collapsed Height [inches] Max. Air 116 psi [cubic feet] Max. Operating Pressure [psi] Burst Pressure [psi] Weight [lbs] LB LB LB LB LB LB LB LB LB *Important: Refer to Section 13.0 for Height vs. Lifting Capacity Graphs. Maximum lifting height decreases as the lifting weight increases. Model Number Table 1B - Specifications, Enerpac Air Lifting Bags, Models LB3 through LB74 - Metric Measurements Max. Lifting Capacity* [kg] Max. Lifting Height [cm] * Bag Dimensions (uninflated) Length [cm] Width [cm] Collapsed Height [cm] Max. Air 8 bar [liter] Max. Operating Pressure [bar] Burst Pressure [bar] Weight [kg] LB3 2, ,5 22,5 2,9 15, ,3 LB6 5, ,0 30,0 2,9 41, ,4 LB11 9, ,0 38,0 2,9 86, ,0 LB14 12, ,0 45,0 2,9 152, ,3 LB23 20, ,0 55,0 2,9 295, ,1 LB28 25, ,0 61,0 3,1 415, ,2 LB35 32, ,5 68,5 3,1 620, ,3 LB46 41, ,5 77,5 3,1 920, ,2 LB74 67, ,5 91,5 3,1 1504, ,3 *Important: Refer to Section 13.0 for Height vs. Lifting Capacity Graphs. Maximum lifting height decreases as the lifting weight increases. 10

11 13.0 HEIGHT VS. LIFTING CAPACITY GRAPHS 7 Figure 19A. Height vs. Lifting 116 psi, Models LB3 and LB6. (Imperial Measurements) 6 Notes: Selection of the proper lifting bag depends on the ratio of height vs. weight. Maximum lifting height DECREASES as the weight INCREASES. Use the graphs to determine the maximum height that each bag model will lift for a given weight. Maximum Lifting Capacity (US tons) LB3 LB Figure 19B. Height vs. Lifting 116 psi, Models LB11 through LB74. (Imperial Measurements) Maximum Lifting Height (inches) 80 Maximum Lifting Capacity (US tons) LB23 LB46 LB28 LB35 LB74 10 LB14 LB Maximum Lifting Height (inches) 7000 Figure 19C. Height vs. Lifting 8 Bar, Models LB3 and LB6. (Metric Measurements) Maximum Lifting Capacity (kg) LB6 LB Maximum Lifting Height (cm) Figure 19D. Height vs. Lifting 8 Bar, Models LB11 through LB74. (Metric Measurements) Maximum Lifting Capacity (kg) LB23 LB14 LB11 LB46 LB28 LB35 10 LB Maximum Lifting Height (cm)

12 INSPECTION CHECKLIST ENERPAC LIFTING BAGS (Copy and complete this form as needed) Visual Inspection: Inflation nipple in good condition and free of dirt. No visible reinforcement cords on bag surface. No boils, blisters, bulges or other visible imperfections on bag surface. No cracks on bag surface. No visible ply separation on bag surface. No captured air or water inside bag layers. Pressure Test: Bag does not leak when pressurized to 116 psi [8 bar] using water (10 minutes). 12