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Parker Safety Guide responsible for the selection of the proper Fitting and Hose Assembly� Leaks at Fitting or in Hose; procedures. See instruction 1.4. � Kinked, crushed, flattened or twisted Hose; and The Parker published instructions must be followed for assembling� Blistered, soft, degraded, or loose cover. the Fittings on the Hose. These instructionsare providedin the Parker4.3Visual Inspection All Other: The following items must be tightened, Fitting catalog for the specific Parker Fitting being used, or by callingrepaired, corrected or replaced as required: 1-800-CPARKER, or at www.parker.com. � Leaking port conditions; 3.3 Related Accessories: Do not crimp or swage any Parker Hose or Fit-� Excess dirt buildup; ting with anything but the listed swage or crimp machine and dies in� Worn clamps, guards or shields; and accordancewithParker publishedinstructions.Donotcrimp orswage � System fluid level, fluid type, and any air entrapment. anothermanufacturers FittingwithaParkercrimporswagedieunless4.4 FunctionalTest: Operate the system at maximum operating pressure authorized in writing by the engineering manager of chief engineer ofand check for possible malfunctions and leaks. Personnel must avoid the appropriate Parker division. potential hazardous areas while testing and using the system. See 3.4 Parts: Do not use any Parker Fitting part (including but not limited tosection 2.2. socket, shell, nipple, or insert) except with the correct Parker mat-4.5ReplacementIntervals: Hose assemblies andelastomeric seals used ing parts, in accordance with Parker published instructions, unlesson Hose Fittings and adapters will eventually age, harden, wear and authorized in writing by the engineering manager or chief engineerdeteriorate under thermal cycling and compression set. Hose As- of the appropriate Parker division. semblies and elastomeric seals should be inspected and replaced at 3.5 Field Attachable/Permanent: Do not reuse any field attachable (Fieldspecific replacement intervals,based on previousservice life,govern- Attachable) Hose Fitting that has blown or pulled off a Hose. Do notment or industry recommendations, or when failures could result in reuse a Parker permanent Hose Fitting (crimped or swaged) or anyunacceptable downtime, damage, or injury risk. See section 1.2. part thereof. Complete Hose Assemblies may only be reused after4.6Hose Inspection and Failure: Hydraulic power is accomplished by proper inspection under section 4.0. Do not assemble Fittings to anyutilizing high-pressure fluids to transfer energy and do work. Hoses, previously used hydraulic Hose that was in service, for use in a fluidFittings, and Hose Assemblies all contribute to this by transmitting power application. fluids at high pressures. Fluids under pressure can be dangerous and 3.6 Pre-InstallationInspection:Priortoinstallation,acarefulexaminationpotentially lethal and, therefore, extreme caution must be exercised of the Hose Assembly must be performed. Inspect the HoseAssemblywhen working with fluids under pressure and handling the Hoses forany damageordefects. DoNOTuseanyHose Assemblythatdisplays transporting the fluids. From time to time, Hose Assemblies will fail any signs of nonconformance. ifthey arenot replaced at proper timeintervals. Usually these failures 3.7 MinimumBendRadius:Installationof aHoseatlessthantheminimum are the result of some form of misapplication, abuse, wear, or failure listed bend radius may significantly reduce the Hose life. Particularto perform proper maintenance. When Hoses fail, generally the high- attention mustbe giventoprecludesharpbending attheHoseto Fittingpressure fluids inside escape in a stream which may or may not be juncture. Any bending during installation at less than the minimumvisible to the user. Under no circumstances should the user attempt bend radius must be avoided.If any Hose is kinked duringinstallation,to locate the leak by "feeling" with their hands or any other part of the Hose must be discarded. their body. High-pressure fluids can and will penetrate the skin and 3.8 Twist Angle and Orientation: Hose Assembly installation must be cause severe tissue damage andpossibly loss oflimb.Evenseemingly such that relative motion of machine components does not produceminor hydraulic fluid injection injuries must be treated immediately twisting. by a physician with knowledge of the tissue damaging properties of 3.9 Securement: In many applications, it may be necessary to restrain,hydraulic fluid. protect, or guide the Hose to protect it from damage by unnecessaryIf a Hose failure occurs, immediately shut down the equipment and flexing, pressure surges, and contact with other mechanical compo-leave the area until pressure has been completely released from the nents. Care must be taken to insure such restraints do not introduceHoseAssembly.Simplyshutting down the hydraulic pumpmay ormay additional stress or wear points. not eliminate the pressure in the Hose Assembly. Many times check 3.10 Proper Connection of Ports: Proper physical installation of the Hosevalves,etc.,areemployedinasystemandcancause pressuretoremain Assembly requires a correctly installed port connection insuring thatin aHoseAssemblyevenwhenpumps orequipment arenotoperating. no twistor torqueis transferred totheHose when the Fittings are beingTiny holes in the Hose, commonly known as pinholes, can eject small, tightened or otherwise during use. dangerously powerful but hardtoseestreamsof hydraulicfluid. Itmay 3.11 ExternalDamage: Properinstallationis not complete withoutinsuringtake several minutes or even hours for the pressure to be relieved so that tensile loads, side loads, kinking, flattening, potential abrasion,that the Hose Assembly may be examined safely. thread damage, or damage to sealing surfaces are corrected or elim-Oncethepressurehas beenreducedto zero,theHose Assemblymaybe inated. See instruction 2.10. taken off the equipment and examined. It must always be replaced if a 3.12 System Checkout: All air entrapment must be eliminated and the failure hasoccurred.Never attempt topatch orrepair aHose Assembly system pressurized to the maximum system pressure (at or below thethathasfailed.Consultthe nearestParkerdistributor or theappropriate Hosemaximumworking pressure) andcheckedforproperfunctionand Parker division for Hose Assembly replacement information. freedom from leaks. Personnel must stay out of potential hazardousNever touchor examinea failedHoseAssemblyunlessit isobviousthat areas while testing and using. the Hose no longer contains fluid under pressure. The high-pressure 3.13 Routing: The Hose Assembly should be routed in such a manner so iffluid is extremely dangerous and can cause serious and potentially a failuredoes occur, the escaping mediawill notcause personal injuryfatal injury. or property damage. In addition, if fluid media comes in contact with4.7Elastomeric seals: Elastomeric seals will eventually age, harden, hot surfaces, open flame,or sparks, a fire or explosion may occur. Seewear and deteriorate under thermal cycling and compression set. section 2.4. Elastomeric seals should be inspected and replaced. PTFE&HydraulicHose,AirCoiled&Technical 4.8 Refrigerant gases: Special care should be taken when working withTooling&(Fleet)TruckFittingsPneumaticHose&ThermoplasticApprovalsDesignAlphanumeric&Hose 4.0 HOSE AND FITTING MAINTENANCE AND REPLACEMENT refrigeration systems. Sudden escape of refrigerant gases can cause EquipmentProductsTubingFittings&Fit.&AccessoriesHoseInformationGuidesIndexAccessories INSTRUCTIONS blindnessifthe escaping gases contact theeye andcan cause freezing 4.1 Evenwithproperselectionandinstallation,Hoselifemaybesignificantlyor other severe injuries if it contacts any other portion of the body. reducedwithouta continuing maintenanceprogram.The severityofthe4.9Compressednatural gas(CNG): Parker CNG Hose Assemblies should application, risk potentialfrom apossibleHose failure, and experiencebe tested after installation and before use, and at least on a monthly withanyHosefailuresintheapplication or insimilarapplicationsshouldbasis per AGA 1-93 Section 4.2 "Visual Inspection Hose/Fitting". The determine the frequencyof the inspection and the replacement fortherecommendedprocedureis to pressurizetheHoseandcheckfor leaks Products so that Products are replaced before any failure occurs. Aand to visually inspect the Hose for damage. maintenance program must be established and followed by the userCaution: Matches, candles, open flame or other sources of ignition and, at minimum, must include instructions 4.2 through 4.7. shall not be used for Hose inspection. Leak check solutions should 4.2 Visual Inspection Hose/Fitting: Anyof the followingconditions requirebe rinsed off after use. immediate shut down and replacement of the Hose Assembly: � Fitting slippage on Hose, � Damaged, cracked, cut or abraded cover (any reinforcement ex- posed); � Hard, stiff, heat cracked, or charred Hose; � Cracked, damaged, or badly corroded Fittings; 301 Parker Hannifin Corporation Parflex Division Ravenna, Ohio
Goodyear Rubber Products
