2Session ObjectiveThe Objective of this session is to increase the user’s knowledge of the proper operation, use and care of the Holmatro HLB Lifting Bag SystemThis Training session does not take the place of or supercede any training protocol required by your department’s SOPs for performing rescue using these systems.
3Personal Responsibility Code The member companies of FEMSA that provideemergency response equipment and services wantresponders to know and understand the following:1. Firefighting and Emergency Response are inherently dangerous activities requiring proper training in their hazards and the use of extreme caution at all times.2. It is your responsibility to read and understand any user’s instructions provided with any piece of equipment you may be called upon to use.3. It is your responsibility to know that you have been properly trained in Firefighting and/or Emergency Response and in the use, precautions, and care of any equipment you may be called upon to use.
4Personal Responsibility Code 4. It is your responsibility to be in proper physical condition and to maintain the personal skill level required to operate any equipment you may be called upon to use.5. It is your responsibility to know that your equipment is in operable condition and has been maintained in accordance with the manufacturer’s instructions.6. Failure to follow these guidelines may result in death, burns or other severe injury.Fire and Emergency Manufacturers and Services Association, Inc.P.O. Box 147, Lynnfield , MA 01940Copyright 2004 FEMSA. All Rights Reserved.
5Program Outline How Do Lifting Bags Work? Lifting Bag Characteristics & SpecificationsConstructionChemical ResistanceTemperature RangeWarrantyProduct RangeLifting BagsAccessories
6Program Outline Operation of Lifting Bags Connection Disconnection Proper Lifting TechniquesPost-use InspectionCare and StorageTrainingKnowledge Retention Test
7How Do Lifting Bags Work? Lifting bags are capable of lifting enormous loadsIn our case up to 150,532 lbs!Lifting force is created by applying a specified pressure across a known area.The scientific name for this simple principle is:Pascal’s Principle
8P x A=F Pressure times Area Equals Force Pascal’s Principle:P x A=FPressure times Area Equals Force
9Operating Pressure Our system operates at a maximum of 116 psi/8 bar This represents the “P” in the equation
10Surface Area This HLB-20 lifting bag measures 20.125” x 20.125” Surface area then equals 405 in sq.This represents the “A” in the equation.inchesinches
11Let’s Plug In The Numbers… P x A=F116 pounds/in² X in² = 46,980 lbs46,980 lbs ÷ 2,200 lbs/ton* = tons of lift*Metric ton46,980 lbs ÷ 2,000 lbs/ton* = tons of lift*USA (short) ton
12OK…Now I’m Confused This is an HLB-20, right? Why didn’t the answer come out to exactly 20 tons?Okay, just a couple more items to thoroughly confuse you, then I’ll clear everything up!
13We must consider…The construction of any brand of lifting bag is basically an envelope designBecause this “envelope” is formed by the four sealed edges of the bag…The inflation area does not include the ENTIRE surface area of the bag.The actual surface area is the total minus whatever the small area of the edges equals
14Like this… Once we take into account the loss of area for the edges We can see the actual useable area of the bag
15Let’s re-do the math… Actual surface area is 19.54 in x 19.54 in or: 381.81in ² x 116 psi = lbs.Round up to make it simple and divide by 2,200 lbs gives20.13 metric tons19.54 inches
16Inflation Characteristics Next we must consider what happens when we introduce compressed air into the lifting bag…As the air volume increases the bag becomes more convex or rounded…
17Inflation Characteristics This gives us lift height and at the same time…Reduces the surface area in contact with the object being lifted
18Contact Area vs. Surface Area So far we have looked at the available surface area of the bag and used that to calculate the maximum lift of the bag.In actual use what really matters is the contact area of the bag.Whatever the actual contact area is between the object being lifted and the surface of the bag determines how much can be lifted, and how high!
19Contact AreaIs the total area (in²) of the bag that comes in contact with the object to be lifted.
20View from the Top Object being lifted Contact Area: 381.81in² x 116psi =44,290 lbs0.0”Object being lifted
21View from the Top Object being lifted Contact Area: 133.8in² x 116psi =15,925 lbs4.75”Object being lifted
22View from the Top Object being lifted Contact Area: 84.9in² x 116psi =9856 lbs6.25”Object being lifted
23View from the Top Object being lifted Contact Area: 26.27in² x 116psi =3,047.3 lbs8.75”Object being lifted
25To Sum It All UpThe higher the bag lifts an object the smaller the contact area becomes…Therefore the higher we lift, the less weight we can liftTo maximize our lifting we must maximize contact area!
26To Sum It All UpForce on an object is created by the amount of contact area x the working pressure of the system.Pascal’s Principle can be reworded for our purposes as:System Pressure x Contact Area = Amount of Force PossibleP x A = F
27Lifting Rules of ThumbMost frequently we are needing lift height not lift capacity…most passenger cars weigh between 2-4 tons.To lift one ton (2,000 lbs) only requires a little more than 4” x 4” (16 in²) of contact area.Two tons requires only about 6” x 6” (36 in²) of contact area.How much area is required to lift 4 tons?68.9 in², or 8.3” x 8.3”
29ConstructionHolmatro HLB series bags are made of a specialized blend of rubber, reinforced by three Kevlar® plies throughout the circumference.To avoid stretching during use, the Kevlar® is pre-stressed before being incorporated in the construction of the bag.Cross section
30ConstructionFor durability, the female fitting on the bag is vulcanized in placeThe male connector is easily field replaceable
31Construction All labels are vulcanized into the bag Serial number and production code is stamped into each bag
32Icon Based LabelsProduct labels are icon-based for international use
33Icon Based Labels Don’t exceed 116 psi/8 bar working pressure Don’t add weight to a lifted loadRead operation manual before useProvide protection against sharp protrusionsCrib as you liftDo not stack more than 2 lifting bags. Place the larger bag on bottomNever place hard sharps protection on top of bag!! Only use soft protection which can be sacrificed, such as a truck mud flap, etc.
34Icon Based Labels Model number Part number Maximum lift height Air volumeMaximum lift capacity
35Icon Based Labels Wear proper eye protection Never place cribbing between the bag and the loadWear safety shoesWear proper protective glovesWear proper protective clothing
36ConstructionHi visibility centering mark is vulcanized onto both sides of the bag to make proper placement easy
37ConstructionLargest bags (HLB-40 & HLB-67) have removable handles at each corner to make placement and carrying easier
38Construction Holmatro has a unique grip pattern for better performance This grip pattern is molded into the bag, not a separate layer added later“L” shaped grooves lock two bags together when stacked
39Chemical ResistanceHolmatro lifting bags are rated for resistance to a broad range of chemical substances.A chemical resistance chart is part of the Owner’s Manual that comes with each system.
40Temperature RangeEven though lifting bags are formulated of rubber compounds, they still offer a very broad operating rangeFor continuous use the temperature range is:-22°F (-30°C) to °F (55°C)
41Warranty for Holmatro® airbags and haz-mat equipment “…High pressure airbags, parts and accessories are guaranteed against defects in material and workmanship for a period of one year from the date of purchase from Holmatro or from an officially appointed distributor of Holmatro.”
42Product RangeHolmatro offers a complete range of 10 different sized lifting bagsLifting capacities range from 1 to 73 tonsBags come in either square or rectangular versions
43AccessoriesLifting Bag systems are available with a variety of accessory kits to meet your needs…
44Accessories Pressure regulators Control units Color coded air hoses for identificationShut off hoses with safety relief valvesALL accessories come standard with auto locking quick connect couplers
45Pressure Regulators Features Available in two models:PRV120 for 2216 psi air bottlesHPRV120 or 4500 psi air bottlesHand tight nuts for connection to air bottleTwo gauges:Input pressure gaugeOutput pressure gaugeManual regulator pressure adjustment keyShown: HPRV120
46Pressure Regulators Connection to air bottle Ensure o-ring seal is present before attaching to cylinder.Ensure that regulator adjustment key is loosened (turn counter-clockwise) 1-2 turnsAttach regulator to air bottle and tighten nut by hand.High pressure (input) gauge is closest to cylinderFlow pressure (output) gauge shows pressure to lifting bagShown: PRV120
47Control Units Features Output to bagsInput from regulatorAvailable in three models:as single SCV10Udouble DCV10U (shown) andheavy duty HDC10UAll models have quick connect auto locking couplers on input and output portsAll models have built in factory set safety relief valvesAll controls have a dead man function
48Control Units Operation On SCV10/DCV10 modelsTop “+” button allows air from cylinder to enter lifting BagsBottom “-” button allows air from lifting bags to be expelled through control unit to outsideModel DCV10
49Control Units Operation On HDC10 modelPulling joystick towards operator allows air to flow to bagPushing joystick away from operator allows air to be expelled through control unit to outsideModel HDC10
50Air HosesAir hoses are constructed of polyurethane with a special reinforcing fiber weaveSpecial weave design allows push in fittings, making them field replaceableCouplers are automatic self-locking typeTo connect: push male nipple into female couplerTo disconnect, rotate silver collar 1/4 turn, and pull back on collar.
51Shut Off HosesShut off hoses w/safety relief valve attach to lifting bag allowing over pressure protection to remain when disconnecting from control unit
52Operation of Lifting Bags Connection of the system should be accomplished quickly.Practice proper connection sequence to become familiar with all components
53Connection Sequence When used with compressed air bottle Connect the air hose between the bag and the control unitConnect shut off hoses now if needed during lift operationConnect the pressure regulator to the air bottle.Connect the air hose from the pressure regulator to the control unit.Open the compressed air bottle. The high pressure gauge, which is the gauge closest to the bottle, indicates the pressure in the bottle.The other gauge shows the pressure that will flow to the lifting bag. Set the regulator so that the lifting bag pressure is 116 psi maximum.Place the lifting bag under the object to be lifted. The system is now ready for use.
541. Connect the air hose between the bag and the control unit
552. Connect the pressure regulator to the air bottle.
563. Connect the air hose from the pressure regulator to the control unit.
574. Open the compressed air bottle 4. Open the compressed air bottle. The high pressure gauge, which is the gauge closest to the bottle, indicates the pressure in the bottle.
585. The other gauge shows the pressure that will flow to the lifting bag. Set the regulator so that the lifting bag pressure is 116 psi maximum.
596. Place the lifting bag under the object to be lifted 6. Place the lifting bag under the object to be lifted. The system is now ready for use.
60Lifting OperationsAs with any rescue operation, safety of the rescuer and patients is the priorityAlways exercise caution when performing lifting operationsAlways have plenty of cribbing material available to support the load AS IT IS BEING LIFTED.NEVER leave a load supported only by a lifting bag.
61Lifting Operations SAFETY Considerations Placement of lifting bags Adjusting height of lifting bagsStacking lifting bagsInflation sequenceLowering the load
62Safety Avoid placing yourself under an unstable load Never stack more than two (2) lifting bagsNever place anything between 2 lifting bagsChock vehicle wheels before beginning any lifting operationFollow all warnings on the lifting bag label and in the users manual
63Safety Operator Position Maintain a safe distance during liftIf space permits, position yourself to the side of possible ejection path of lifting bags
64Safety Improper Operator Position This operator should be to the side of the possible ejection path of the lifting bags
65Safety Improper Placement These bags have not been centered under the rocker channelThis will lead to bags shifting position during inflation…
66Safety Shifting Bags These bags have shifted position…notice the angle They represent a potential ejection hazard
68Placing Lifting Bags Rocker channel Locate lifting bag so that the centering mark is directly underneath the object to be lifted.Remember to look for maximum contact area between bag and load when placing bagProtect the top of the bag against sharp objects by placing SOFT protection that can be sacrificed between bag and the load. (i.e. truck mud flap)NEVER place hard objects between load and top of bag surfaceIMPORTANT! Be conscious of heat sources under vehicle, i.e. catalytic converterRocker channel
69Placing Lifting BagsWhen there is not enough insertion space for bag placement you may need to use another device to create spaceHolmatro’s power wedge can create a 2 inch space from only ¼ inch gap…
70Adjusting HeightSometimes the object being lifted is high above the lifting surface (i.e. large vehicle, SUV, etc..)In this case you can build a box crib beneath the objectAlways place lifting bags on TOP of cribbing
71Single Bag LiftBecause the maximum height of any Holmatro lifting bag is 1” they are easily placed under loads with minimum clearance.Once lift is achieved, crib the load and continueIf more lift height is needed, you can now introduce a second bag on top of the first
72Stacking Bags Two Bag Lift When space permits and maximum lift height is desired, place both bags beneath load.
73Stacking Bags Two Bag Lift Inflate the bottom bag FIRST
74Stacking Bags Two Bag Lift Complete the lift by inflating the top bagPlace cribbing to secure lifted object
75Inflation SequenceWith lifting bag system correctly connected and bags properly placed you can now begin the liftUsing the controller, begin slowly inflating the bottom bagPlace cribbing as the load begins to riseOnce an adequate height is reached secure the load with cribbing.Leave the bag inflated. If using shutoff hose, close quarter turn valve.Air supply hose may now be disconnected from lifting bag
76Deflation Sequence Always deflate bags using the control unit Carefully remove cribbing. It may be necessary to slightly inflate lifting bags.If using two lifting bags, deflate in the opposite order of lift sequence:Deflate top bag firstDeflate bottom bag last
77Disconnecting the System Once load is securely lowered:Turn off valve on air bottleNOTE: There is still air pressure in the rest of the lifting bag systemRelease pressure from system. On SCV/DCV10 units, a quick way to achieve this is to depress both “+” and “-” buttons at the same time.Now you can disconnect all components
78Inspection After UseBefore storing lifting bag system components it is necessary to visually inspect all parts for any damageImmediately remove any damaged components from service and notify your Holmatro dealer.
79Maintenance and Storage Procedures Regulator/Pressure Reducer: Should be stored where it will not sustain damage. Before storage return your regulator to neutral (zero) settingControl Unit: Store in a container to prevent any damageHoses: wind in a coil, belted or tied with couplers joined. Do not place heavy objects on top of stored hoses.
80Maintenance and Storage Procedures Lifting Bags:The air inlet nipple is the most vulnerable part of the bag. Always replace the plastic cap and store in such a way as to avoid damage to the nipple.If damaged, nipple can be field replacedStore bags out of direct contact with sunlight as the UV rays can cause degradation of the rubber compound
81Maintenance and Storage Procedures Lifting Bags (cont’d):Cleaning. After use in oil, sand, dirt bags can be cleaned using only a mild soap and water solution. Clean with a brush or broom, rinse and let dry.NEVER use solvents to clean bagsNEVER use preservatives such as Armorall® or tire spray as they may cause damage and will create slippery and unstable surfaces.
82Remember: Training is an on-going process, not a one time event
83TrainingEnsure that you periodically review this training program and the Owner’s Manual that you received with your Holmatro Lifting Bag SystemEnsure that all new personnel are familiar with this information before using a lifting bag system
84Knowledge Retention Test Number a blank sheet of paper from 1-25Take the following testScore your answers using the answer key (4 points each)You must have a minimum score of 85% to “pass”Review your incorrect responses!!
85Knowledge Retention Test What is the maximum operating pressure of your Holmatro Lifting Bag System?10,500 psi8 psi116 psi116 bar
86Knowledge Retention Test 2. You have a system with 2 model HLB-20 lifting bags. What is the maximum lift capacity available to you using these two lifting bags?20 tons40 tons20 tons x 116 psi30 tons
87Knowledge Retention Test 3. To calculate the lifting capability of a bag you multiply the contact area of the lifting bag x the surface area of the object to be lifted.TrueFalse
88Knowledge Retention Test 4. P x A = F is also known as:Bernoulli's PrincipalPascal’s PrincipalThe PAF PrincipalThe Theory of Relativity
89Knowledge Retention Test 5. If I stack a 20 ton lifting bag on top of a 40 ton lifting bag, I will be able to lift:20 tons60 tons40 tonstons
90Knowledge Retention Test 6. If I place a 20 ton lifting bag adjacent to a 40 ton lifting bag under an object the maximum I will be able to lift is:20 tons60 tons40 tonstons
91Knowledge Retention Test 7. When stacking lifting bags the maximum number of bags I can stack is:123Whatever number of bags I have available
92Knowledge Retention Test 8. When stacking lifting bags the largest bag goes on top.TrueFalse
93Knowledge Retention Test 9. As a lifting bag inflates the lifting capacity of the bag actually:DecreasesIncreasesStays the sameReaches 116psi
94Knowledge Retention Test 10. The contact area between the bag and the object being lifted is what gives the actual lifting capacity.TrueFalse
95Knowledge Retention Test 11. For most passenger vehicles, we are not so much interested in lifting capacity as:Surface areaContact areaLifting heightShape of lifting bag
96Knowledge Retention Test 12. To obtain maximum lifting height I can stack two bags one on top of the other:TrueFalse
97Knowledge Retention Test 13. When placing lifting bags beneath an object to be lifted:Avoid placing yourself under the objectCenter the load on the lifting bagHave cribbing availableAll of the above
98Knowledge Retention Test 14. To place a lifting bag beneath an object I must have at least:A crowbarA 2” openingA 1” openingNone of the above
99Knowledge Retention Test 15. The most important thing in any rescue is:RushingSafety of the patient and rescuersFinishingNone of the above
100Knowledge Retention Test 16. The more I inflate a lifting bag, the smaller the contact area becomes.FalseTrueOnly above sea levelNone of the above
101Knowledge Retention Test 17. When inflating a lifting bag I should place myself directly in line with the bag to have a better view of the lifting operation.FalseTrue
102Knowledge Retention Test 18. Proper lifting of a load means:Crib the load as you liftNever place a load on a lifted objectUse no more than 116 psi.All of the above
103Knowledge Retention Test 19. To lower a load you should just simply remove the air supply hose from the lifting bag inlet nipple.TrueFalseOnly if the ambient temperature is < 85° FOnly if the ambient temperature is between -22° F and 131°F
104Knowledge Retention Test 20. After using your lifting bag system you should:Visually inspect all componentsStore in a protected locationRemove any broken or damaged items from serviceAll of the above
105Knowledge Retention Test 21. You were required to perform a lifting operation in a muddy environment. What should you do before storing your system:Clean system using a strong solventNothing, system cannot be cleaned by end userCall your Holmatro Dealer for serviceNone of the above
106Knowledge Retention Test 22. Upon visual inspection it is noticed that an inlet nipple on a lifting bag was damaged. This means that the bag has to be replaced.TrueFalse
107Knowledge Retention Test 23. You need to lift an object with a sharp edge in the contact area. To protect the bag you should place what on top?A thick steel plateNothing, never place anything on top of a lifting bagSoft, sacrificial protectionA truck mud flapNone of the aboveC and D above
108Knowledge Retention Test 24. When lifting using two stacked bags:Inflate both bags simultaneouslyInflate the bottom bag firstInflate the top bag firstYou cannot lift using two stacked bags
109Knowledge Retention Test 25. The object you need to lift is higher than the maximum lift height of your 2 lifting bags. What can you do:NothingBuild a box crib platform on top of your two lifting bags to fill the gapBuild a box crib platform beneath your two lifting bags to fill the gapStack cribbing between your two lifting bags to fill the gap