the rod and piston fully retracted, and the pressure applied to the lower
side of the piston, the upper end shall be observed for leakage past the
piston.] [With the telescopic cylinder fully retracted and under pressure,
the cylinder shall be checked for leakage past the seals.] Any leakage
past the seals shall be cause for rejection. The [cylinder rod and piston]
[telescopic cylinder] shall then be extended and observed for smooth, even
travel. Any operational problems or source of leakage to the outside of
the cylinder will be cause for rejection.
2.4.3
Hydraulic Power Units
Shop-fabricated power and control units and piping shall be hydrostatically
tested at the maximum pressure allowed by the installed equipment. Valves
and operators shall undergo a functional test and the pumps shall be tested
to verify flow and pressure ratings. The power unit shall then be
connected to the hydraulic cylinder and operationally tested at [_____]
kPa. psi.Any operational problems will be cause for rejection.
PART 3
EXECUTION
3.1
INSTALLATION
3.1.1
General
The Contractor shall install the equipment specified and as shown on the
drawings to complete the hydraulic power systems for operation of the
[intake gates] [slide gates] [control gates] [tainter gates] [miter gates]
[butterfly valves] [hoisting equipment] [_____]. Installation of hydraulic
components shall be in accordance with the manufacturer's written
instructions and under the direction of the erection engineer or
manufacturer's representative. Complete units or assemblies shall be
installed without disassembly. Necessary supports for all appurtenances,
pumps, motors, and other equipment or components shall be provided as
shown. Floor-mounted equipment shall be anchored to concrete pads by
anchor bolts or expansion anchors as shown. Installation shall be in
accordance with Section 05055A METALWORK FABRICATION, MACHINE WORK,
MISCELLANEOUS PROVISIONS and Section [[16___]] [Section 16402 INTERIOR
DISTRIBUTION SYSTEM].
3.1.2
Cleaning and Flushing the System
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NOTES: The allowable limit of contamination in this
paragraph is subject to the specific project design
requirements which may necessitate revision or
expansion to cover varying standards of acceptance.
The amount and sizes of particles which any given
component can tolerate is a function of the
clearances between moving parts, the frequency and
speed of operation, and the materials of
construction. Tolerances range from low pressure
gear pumps which may give satisfactory performance
with dirt levels typically found in new fluid (SAE
J1165 18/15) to servo control valves which require
oil eight times cleaner (SAE J1165 15/12). General
guidelines are as follows:
SECTION 15010A
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