Parker MiniKrimp 94C-001-PFD, Техническое руководство

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4.5 Proper Connection of Ports: Proper physical installation of the Tube
Assembly requires a correctly installed port connection insuring that no
torque is transferred to the Tube when the Fittings are being tightened
or otherwise during use.
4.6 External Damage: Proper installation is not complete without insur-
ing that tensile loads, side loads, flattening, potential abrasion, thread
damage or damage to sealing surfaces are corrected or eliminated.
See instruction 2.10.
4.7 System Checkout: All air entrapment must be eliminated and the
system pressurized to the maximum system pressure (at or below the
Tube Assembly maximum working pressure) and checked for proper
function and freedom from leaks. Personnel must stay out of potential
hazardous areas while testing and using.
4.8 Routing: The Tube 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 fluid media comes in contact
with hot surfaces, open flame or sparks, a fire or explosion may occur.
See section 2.4.
5.0 HOSE AND FITTING MAINTENANCE AND REPLACEMENT
INSTRUCTIONS
5.1 Even with proper selection and installation, Hose life may be
significantly 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. Certain products require maintenance and inspection
per industry requirements. Failure to adhere to these requirements may
lead to premature failure. A maintenance program must be established
and followed by the user and, at minimum, must include instructions 5.2
through 5.7
5.2 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 ex-
posed);
• Hard, stiff, heat cracked, or charred Hose;
• Cracked, damaged, or badly corroded Fittings;
• Leaks at Fitting or in Hose;
• Kinked, crushed, flattened or twisted Hose; and
• Blistered, soft, degraded, or loose cover.
5.3 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 fluid level, fluid type, and any air entrapment.
5.4 Functional Test: Operate the system at maximum operating pres-
sure and check for possible malfunctions and leaks. Personnel must
avoid potential hazardous areas while testing and using the system.
See section 2.2.
5.5 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 specific replacement intervals, based on previous service life, gov-
ernment 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 fluid and may fail without warning. The user
must determine the product life under such circumstances by testing.
Also see section 2.5.
5.6 Hose Inspection and Failure: Hydraulic power is accomplished by
utilizing high pressure fluids to transfer energy and do work. Hoses,
Fittings and Hose Assemblies all contribute to this by transmitting fluids
at high pressures. Fluids under pressure can be dangerous and poten-
tially lethal and, therefore, extreme caution must be exercised when
working with fluids under pressure and handling the Hoses transporting
the fluids. 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 fluids 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 fluids
can and will penetrate the skin and cause severe tissue damage and
possibly loss of limb. Even seemingly minor hydraulic fluid injection
injuries must be treated immediately by a physician with knowledge of
the tissue damaging properties of hydraulic fluid.
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
fluid. 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 As-
sembly that has failed. Consult the nearest Parker distributor or the ap-
propriate 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 fluid under pressure. The high pres-
sure fluid is extremely dangerous and can cause serious and potentially
fatal injury.
5.7 Elastomeric seals: Elastomeric seals will eventually age, harden,
wear and deteriorate under thermal cycling and compression set. Elas-
tomeric seals should be inspected and replaced.
5.8 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.
5.9 Compressed natural gas (CNG): Parker CNG Hose Assemblies
should be tested after installation and before use, and at least on a
monthly basis per instructions provided on the Hose Assembly tag. The
recommended procedure is to pressurize the Hose and check for leaks
and to visually inspect the Hose for damage and to perform an electri-
cal resistance test.
Caution: Matches, candles, open flame or other sources of ignition shall
not be used for Hose inspection. Leak check solutions should be rinsed
off after use.
6.0 HOSE STORAGE
6.1 Age Control: Hose and Hose Assemblies must be stored in a man-
ner that facilitates age control and first-in and first-out usage based on
manufacturing date of the Hose and Hose Assemblies. Unless
otherwise specified by the manufacturer or defined by local laws and
regulations:
6.1.1 The shelf life of rubber hose in bulk form or hose made from two
or more materials is 28 quarters (7 years) from the date of manufacture,
with an extension of 12 quarters (3 years), if stored in accordance with
ISO 2230;
6.1.2 The shelf life of thermoplastic and polytetrafluoroethylene hose is
considered to be unlimited;
6.1.3 Hose assemblies that pass visual inspection and proof test shall
not be stored for longer than 2 years.
6.1.4 Storage: Stored Hose and Hose Assemblies must not be subject-
ed 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 fields or radioactive materials.
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