doc 6.120 Operating instructions hydro accumulators
Contents
1. 1 Handling Handle with care Provide lifting gear that is suitable for the weight of the accumulator The inflation valve must not be subjected to any impact however slight Parker Hannifin GmbH Tel 49 2131 4016 0 Fax 49 2131 4016 9199 Pat Parker Platz 1 E Mail parker germany parker com Web www olaer de 3 2 Storage Store in a cool dry place Do not expose to flames or heat It is recommended that accumulators be stored in a horizontal position When storing accumulators in their original packaging do not stack them unless their volume is less than 4 liters maximum 2 tiers If the accumulators are to be stored for more than five years all parts made of elastomeric material must be replaced before they are put into service contact Parker Olaer If they are to be stored for a period of five years or less this period should be borne in mind when determining the dates of the first maintenance operations see section 6 Storing a bladder or diaphragm accumulator inflated to its inflation pressure P for a long period of time is not recommended see section 5 1 1 Piston accumulators To store piston accumulators for a longer period fill them with dry nitrogen mind 99 99 pure and anti corrosive oil In addition you have to conserve all not corrosive resistant surfaces with grease 4 Accumulator Labeling and Marketing It is strictly forbidden to change any information and markings without the2. Be Goar doc 6 120 Page 1 of 4 Hydro accumulators according DGRL 97 23 EG Operating instruction 1 General This equipment is designed manufactured and tested in compliance with European Directive 97 23 EC Strict compliance with the instructions given in this document and all relevant documents is essential The supplier disclaims all liability for any direct or indirect damage to property or personal injury and all responsibility for consequential damage such as for example operating losses arising from the failure to follow the instructions given below Before commissioning and during operation it is important to refer to the regulations for the use of hydraulic accumulators in force on the installation site Compliance with current regulations is the responsibility of the operator who must ensure that the documents supplied with the equipment are kept in a safe place They may be required for inspection purposes 2 Safety Devices Current site regulations require the use of all or some of the following safety devices e Overpressure protection device e Decompression device e Pressure gauge e Pressure gauge connector isolator and so on The operator is required to comply with these regulations Parker Olaer units use all or some of these devices Supplied as optional extras 3 Handling Storage The original packing is suitable for handling and storing the equipment unless otherwise specified 3
3. d by Parker Olaer and depending on the operating conditions e Check the safety devices and connections e Some models include a venting screw Control this screw regularly It must be tightened and free from leakage e Check the accumulator mountings e Visually inspect the accumulator for any sign of wear and tear such as corrosion or deformation If you are using an abrasive or corrosive fluid check the inside of the accumulator e To maintain an accumulator when it is in service regular requalification operations etc refer to the current site regulations For disassembly cleaning and reassembly operations please contact Parker Olaer 7 Accumulator disposal recycling Before recycling or disposing of an accumulator depressurize it and remove the inflation valve Decontaminate if necessary Parker Hannifin GmbH Pat Parker Platz 1 41564 Kaarst Tel 49 2131 4016 0 Fax 49 2131 4016 9199 E Mail parker germany parker com Web www olaer de doc 6 120 Page 4 of 4 Stand 06 14
4. e accumulator Check that the allowable temperature range covers the operating temperatures environ ment and hydraulic fluid temperatures For any other temperature you will have to contact Parker Olaer 5 1 5 Hydraulic fluid used The accumulator materials are determined accor ding to the hydraulic fluid used Check that the fluid is compatible with the equipment It is strictly forbidden to use an accumulator with a fluid for which it is not designed A group 1 fluid in particu lar must not be used in an accumulator designed to use a group 2 fluid Group 1 dangerous fluids includes explosive high ly flammable easily flammable flammable highly toxic toxic combustive fluids as defined in article 2 Section 2 of European Directive 67 548 EEC of 27 June 1967 Group 2 non dangerous fluids contains all the other fluids When a group 1 dangerous fluid is used all pos sible safety precautions must be taken in accor dance with current site regulations Other fluids then hydraulic fluid have to be identified outside at the accumulator For further information please contact Parker Olaer Stand 06 14 41564 Kaarst Be Goar 5 1 6 Installation site Ensure that the labels and markings are clearly visible Leave at least 200 mm above the inflation valve for the checking and inflation instruments Where the model used is fitted with a bleeder screw ensure that this is fully accessible Take the environmental condi
5. e section 5 If necessary the accumulator has to be separated on the fluid side completely from the system Attention Some fluids could remove gases Before disassembling an accumulator all parts mounted to the fluid side connection like reducers connectors or any other accessories have to be removed With the accumulator completely free of pressure the poppet valve in the fluid port is open or can be pushed inside with hand force EHV IHV series For accumulators with the bladder support grid EBV IBV series a loose fit of the grid has to be detected If this is not the case all further work has to be stopped Please contact Parker Olaer Stand 06 14 41564 Kaarst Be Goar The relevant repair instruction doc 6 130 IHV EHV series or doc 6 140 IBV EBV series has to be respected Those are available under www olaer de additionally Once they have been commissioned OLAER accumulators require practically no maintenance To keep the equipment in good working order and ensure a long service life the following maintenance work is recommended 6 1 Inflation pressure PO checks When the accumulator has been commissioned check the inflation pressure PO once a week for the first month After that adjust the frequency of such checks weekly monthly six monthly annually depending on the pressure drop see section 5 2 6 2 Other Operations You are advised to carry out the following checks at the intervals recommende
6. l properties e Modify the accumulator or its components with out the prior written agreement of Parker Olaer Explosion hazard and or danger of bursting For further information about the commissioning or use of the accumulator please contact Parker Olaer 5 1 Commissioning Recommendations 5 1 1 Inflation pressure Po maximum allowable inflation pressure The inflation pressure P is calculated according to the operating conditions indicated by the customer Parker Hannifin GmbH Tel 49 2131 4016 0 Fax 49 2131 4016 9199 Pat Parker Platz 1 E Mail parker germany parker com Web www olaer de doc 6 120 Page 2 of 4 On some models the maximum allowable inflation pressure is indicated on the accumulator The accumulators are supplied as follows e Ready for use inflated to Po e Inflated to approx 5 bar storage pressure In this case the accumulator must be inflated to Po before it is put into service see section 5 2 5 1 2 Inflation gas Use only nitrogen that is at least 99 8 pure It is strictly forbidden to use oxygen or air to inflate the accumulator Explosion hazard 5 1 3 Maximum allowable pressure PS The maximum pressure PS is indicated on the accumulator Check that the maximum allowable pressure is greater than that of the hydraulic circuit For any other pressure you will have to contact Parker Olaer 5 1 4 Allowable temperature range TS The temperature range TS is indicated on th
7. ools supplied as optional extras are used to inflate deflate and check the pressure of the accumulators Parker Hannifin GmbH Tel 49 2131 4016 0 Fax 49 2131 4016 9199 Pat Parker Platz 1 E Mail parker germany parker com Web www olaer de doc 6 120 Page 3 of 4 Note The nitrogen pressure varies according to the temperature of the gas Whenever nitrogen is used to inflate or deflate the accumulator allow the tem perature to stabilize before checking the pressure Never exceed the maximum allowable pressure PS indicated on the accumulator or the maximum inflation pressure if applicable Check the inflation valve for leaks for example using soapy water Use the safety cap to protect the inflation valve 5 3 Hydraulic Pressurization First check the inflation pressure PO see section 5 2 Check the hydraulic circuit for leaks Check that the hydraulic pressure never exceeds the maximum allowable pressure PS indicated on the accumulators A screw that can be used to bleed the hydraulic circuit is provided on some models Control this screw regularly It must be tightened and free from leakage Caution Never open the vent when the hydraulic system is pressurized 6 Maintenance Repair Before removing the accumulator from the hydraulic circuit you must ensure that there is no residual hydraulic pressure in the accumulator Before dismantling the accumulator ensure that no inflation pressure remains se
8. prior written agreement of Parker Olaer In the event of any discrepancy between the information indicated on the nameplate and that given on other parts of the accumulator body mouth etc always refer to the nameplate The following information is indicated on the accumulator Logo Product description Date of manufacture MM YY Accumulator reference Basic allowable limits Stand 06 14 41564 Kaarst Be Goar Accumulator Labeling and Marketing A Temperature range TS in C Maximal pressure PS in bar Fluid group Nominal volume V of the tank in liters Test pressure PT in bar Test date YY MM And for volumes of more than 1 liter e CE Logo and accreditation number of the certifying body And on some models e Warning messages and safety instructions Danger use only nitrogen etc or similar e Maximum inflation pressure in bar e Total dry weight in kg Damaged or missing nameplates have to be replaced Operation without nameplate is not allowed 5 Commissioning The equipment must only be commissioned by qualified technicians please contact Parker Olaer Before installation visually check that the accumulator is not damaged Before carrying out any work on the hydraulic system ensure that it is depressurized Incorrect installation may result in serious accidents It is strictly forbidden to e Weld solder drill or perform any other opera tion that may change any mechanica
9. tions into account and if necessary protect heat sources electric and magnetic fields against lightning moisture bad weather and so on For optimum performance place the accumulator as close as possible to the unit being used It can be installed vertically with the inflation valve upwards or it can be mounted horizontally 5 1 7 Mounting Mount the accumulator as follows e Ensure that the pipes connected directly or indirectly to the accumulator are not subjected to any abnormal force e Ensure that the accumulator cannot move or minimize any movement that may occur as a result of broken connections Parker Olaer collars and brackets are designed for this purpose and can be supplied as optional extras e The accumulator must not subjected to any stress or load in particular from the structure with which it is associated e Some models include a venting screw Control this screw regularly It must be tightened and free from leakage 5 1 8 Final check before startup The pre startup check must be carried out in accordance with current site regulations 5 2 Inflation Secure the accumulator Determine a safety area not in line with the openings hydraulic and nitrogen side Caution Parts may be ejected in the event of component breakage Use a checking and inflation instrument refer to the instructions on how to use the latter to inflate deflate and check the inflation pressure Po Parker Olaer checking inflation t
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