Greenlee LPK1240 Instruction Manual page 36

HOSE AND HOSE ASSEMBLIES (cont'd)
3. Installation
After selection of proper hose, the following factors
must be considered by the installer.
3.1 Pre-Installation Inspection – Prior to installa-
tion, a careful examination of the hose must be
performed. All components must be checked for
correct style, size, and length. In addition, the hose
must be examined for cleanliness, I.D. obstruc-
tions, blisters, loose cover, or any other visual
defects.
3.2 Follow Manufacturers' Assembly Instructions.
3.3 Minimum Bend Radius – Installation at less than
minimum bend radius may significantly reduce
hose life. Particular attention must be given to pre-
clude sharp bending at the hose/fitting juncture.
3.4 Twist Angle and Orientation – Hose installations
must be such that relative motion of machine com-
ponents produces bending of the hose rather than
twisting.
3.5 Securement – In many applications, it may be
necessary to restrain, protect, or guide the hose
to protect it from damage by unnecessary flexing,
pressure surges, and contact with other mechani-
cal components. Care must be taken to insure
such restraints do not produce additional stress or
wear points.
3.6 Proper Condition of Ports – Proper physical instal-
lation of the hose requires a correctly installed port
connection while insuring that no twist or torque is
put into the hose.
3.7 Avoid External Damage – Proper installation is
not complete without insuring tensile loads, side
loads, kinking, flattening, potential abrasion, thread
damage, or damage to sealing surfaces are cor-
rected or eliminated.
3.8 System Check Out – After completing the installa-
tion, all air entrapment must be eliminated and the
system pressurized to the maximum system pres-
sure and checked for proper function and freedom
from leaks.
Note: Avoid potential hazardous area while testing.
4. Maintenance
Even with proper selection and installation, hose life
may be significantly reduced without a continuing main-
tenance program. Frequency should be determined by
the severity of the application and risk potential.
A maintenance program should include the following as
a minimum.
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An ISO 9001 Company •
Greenlee Textron Inc. is a subsidiary of Textron Inc.
www.greenlee.com
LPK1230 and LPK1240 12-ton Hydraulic Crimping Tools
4.1 Hose Storage – Hose products in storage can
be affected adversely by temperature, humidity,
ozone, sunlight, oils, solvents, corrosive liquids
and fumes, insects, rodents and radioactive mate-
rial. Storage areas should be relatively cool and
dark, and free of dust, dirt, dampness and mildew.
4.2 Visual Inspection – Any of the following conditions
requires replacement of the hose:
a. Leaks at fitting or in hose.
(Leaking fluid is a fire hazard).
b. Damaged, cut or abraded cover.
(Any reinforcement exposed).
c. Kinked, crushed, flattened or twisted hose.
d. Hard, stiff, heat cracked or charred hose.
e. Blistered, soft degraded or loose cover.
f. Cracked, damaged, or badly corroded fittings.
g. Fitting Slippage on hose.
4.3 Visual Inspection – The following items must be
tightened, repaired, or replaced as required:
a. Leaking port conditions.
b. Clamps, guards, shields.
c. Remove excessive dirt buildup.
d. System fluid level, fluid type, and any air
entrapment.
4.4 Functional Test – Operate the system at maximum
operating pressure and check for possible mal-
functions and freedom from leaks.
Note: Avoid potential hazardous areas
while testing.
4.5 Replacement Intervals – Specific replacement
intervals must be considered based on previous
service life, government or industry recommenda-
tions, or when failures could result in unacceptable
down time, damage, or injury risk.
Reprinted with permission from the 1990 SAE Handbook.
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