Page 73 - FluoropolymerHoseCatalog5162F

71
Catalog Number 5162E
3.10 Proper Connection of Ports: Proper physical installation of the Hose Assembly requires a correctly installed port connection insuring that no twist or torque is transferred to
the Hose when the Fittings are being tightened or otherwise during use.
3.11 External Damage: Proper installation is not complete without insuring that tensile loads, side loads, kinking, fattening, potential abrasion, thread damage or damage to
sealing surfaces are corrected or eliminated. See instruction 2.10.
3.12 System Checkout: All air entrapment must be eliminated and the system pressurized to the maximum system pressure (at or below the Hose maximum working pressure)
and checked for proper function and freedom from leaks. Personnel must stay out of potential hazardous areas while testing and using.
3.13 Routing: The Hose Assembly should be routed in such a manner so if a failure does occur, the escaping media will not cause personal injury or property damage. In
addition, if fuid media comes in contact with hot surfaces, open fame or sparks, a fre or explosion may occur. See section 2.4.
3.14 Ground Fault Equipment Protection Devices (GFEPDs): WARNING! Fire and Shock Hazard. To minimize the danger of fre if the heating cable of a Multitube bundle is
damaged or improperly installed, use a Ground Fault Equipment Protection Device. Electrical fault currents may be insuffcient to trip a conventional circuit breaker.
For ground fault protection, the IEEE 515:1989 (www.ansi.org) standard for heating cables recommends the use of GFEPDs with a nominal 30 milliampere trip level for “piping
systems in classifed areas, those areas requiring a high degree of maintenance, or which may be exposed to physical abuse or corrosive atmospheres”.
4.0 HOSE AND FITTING MAINTENANCE AND REPLACEMENT INSTRUCTIONS
4.1 Even with proper selection and installation, Hose life may be signifcantly reduced without a continuing maintenance program. The severity of the application, risk
potential from a possible Hose failure, and experience with any Hose failures in the application or in similar applications should determine the frequency of the inspection and the
replacement for the Products so that Products are replaced before any failure occurs. A maintenance program must be established and followed by the user and, at minimum, must
include instructions 4.2 through 4.7.
4.2 Visual Inspection Hose/Fitting: Any of the following conditions require immediate shut down and replacement of the Hose Assembly:
• Fitting slippage on Hose;
• Damaged, cracked, cut or abraded cover (any reinforcement exposed);
• Hard, stiff, heat cracked, or charred Hose;
• Cracked, damaged, or badly corroded Fittings;
• Leaks at Fitting or in Hose;
• Kinked, crushed, fattened or twisted Hose; and
• Blistered, soft, degraded, or loose cover.
4.3 Visual Inspection All Other: The following items must be tightened, repaired, corrected or replaced as required:
• Leaking port conditions;
• Excess dirt buildup;
• Worn clamps, guards or shields; and
• System fuid level, fuid type, and any air entrapment.
4.4 Functional Test: Operate the system at maximum operating pressure and check for possible malfunctions and leaks. Personnel must avoid potential hazardous areas while
testing and using the system. See section 2.2.
4.5 Replacement Intervals: Hose assemblies and elastomeric seals used on Hose Fittings and adapters will eventually age, harden, wear and deteriorate under thermal cycling
and compression set. Hose Assemblies and elastomeric seals should be inspected and replaced at specifc replacement intervals, based on previous service life, government or
industry recommendations, or when failures could result in unacceptable downtime, damage, or injury risk. See section 1.2. Hose and Fittings may be subjected to internal
mechanical and/or chemical wear from the conveying fuid and may fail without warning. The user must determine the product life under such circumstances by testing. Also see
section 2.5.
4.6 Hose Inspection and Failure: Hydraulic power is accomplished by utilizing high pressure fuids to transfer energy and do work. Hoses, Fittings and Hose Assemblies all
contribute to this by transmitting fuids at high pressures. Fluids under pressure can be dangerous and potentially lethal and, therefore, extreme caution must be exercised when
working with fuids under pressure and handling the Hoses transporting the fuids. From time to time, Hose Assemblies will fail if they are not replaced at proper time intervals.
Usually these failures are the result of some form of misapplication, abuse, wear or failure to perform proper maintenance. When Hoses fail, generally the high pressure fuids
inside escape in a stream which may or may not be visible to the user. Under no circumstances should the user attempt to locate the leak by “feeling” with their hands or any other
part of their body. High pressure fuids can and will penetrate the skin and cause severe tissue damage and possibly loss of limb. Even seemingly minor hydraulic fuid injection
injuries must be treated immediately by a physician with knowledge of the tissue damaging properties of hydraulic fuid.
If a Hose failure occurs, immediately shut down the equipment and leave the area until pressure has been completely released from the Hose Assembly. Simply shutting down the
hydraulic pump may or may not eliminate the pressure in the Hose Assembly. Many times check valves, etc., are employed in a system and can cause pressure to remain in a Hose
Assembly even when pumps or equipment are not operating. Tiny holes in the Hose, commonly known as pinholes, can eject small, dangerously powerful but hard to see streams
of hydraulic fuid. It may take several minutes or even hours for the pressure to be relieved so that the Hose Assembly may be examined safely.
Once the pressure has been reduced to zero, the Hose Assembly may be taken off the equipment and examined. It must always be replaced if a failure has occurred. Never attempt
to patch or repair a Hose Assembly that has failed. Consult the nearest Parker distributor or the appropriate Parker division for Hose Assembly replacement information.
Never touch or examine a failed Hose Assembly unless it is obvious that the Hose no longer contains fuid under pressure. The high pressure fuid is extremely dangerous and can
cause serious and potentially fatal injury.
4.7 Elastomeric seals: Elastomeric seals will eventually age, harden, wear and deteriorate under thermal cycling and compression set. Elastomeric seals should be inspected and
replaced.
4.8 Refrigerant gases: Special care should be taken when working with refrigeration systems. Sudden escape of refrigerant gases can cause blindness if the escaping gases
contact the eye and can cause freezing or other severe injuries if it contacts any other portion of the body.
4.9 Compressed natural gas (CNG): Parker CNG Hose Assemblies should be tested after installation and before use, and at least on a monthly basis per ANSI/IAS NGV
4.2-1999; CSA 12.52-M99 Section 4.2 “Visual Inspection Hose/Fitting”. The recommended procedure is to pressurize the Hose and check for leaks and to visually inspect the
Hose for damage.
Caution: Matches, candles, open fame or other sources of ignition shall not be used for Hose inspection. Leak check solutions should be rinsed off after use.
5.0 HOSE STORAGE
5.1 Age Control: Hose and Hose Assemblies must be stored in a manner that facilitates age control and frst-in and frst-out usage based on manufacturing date of the Hose and
Hose Assemblies. The shelf life of rubber Hose or Hose Assemblies that have passed visual inspection and a proof test is 10 years (40 quarters) from the date of manufacture. The
shelf life of thermoplastic and polytetrafuoroethylene Hose or Hose Assemblies is considered to be unlimited.
5.2 Storage: Stored Hose and Hose Assemblies must not be subjected to damage that could reduce their expected service life and must be placed in a cool, dark and dry area
with the ends capped. Stored Hose and Hose Assemblies must not be exposed to temperature extremes, ozone, oils, corrosive liquids or fumes, solvents, high humidity, rodents,
insects, ultraviolet light, electromagnetic felds or radioactive materials.
Warranty