2.6.1.1
Failure Mode of Operation
A disconnect system for the portable crash beam shall be provided to allow
manual operation of the barrier in the event of an electrical or mechanical
failure.
2.6.1.2
Hydraulic Power Unit
**************************************************************************
NOTE: Retain and edit or delete paragraph based on
type of operator chosen.
**************************************************************************
The hydraulic power unit shall contain synthetic biodegradable hydraulic
fluid which maintains its viscosity operating range, even at constant
heaviest use rate, for an ambient temperature range of [minus 7 to plus 66
degrees C 20 to 150 degrees F] [[_____] to [_____]]. A hydraulic fluid
heater shall be provided so that the viscosity remains within its operating
range if ambient temperatures below minus 7 degrees C 20 degrees F are
expected. Flexible hydraulic lines shall be used for the connection of the
hydraulic power unit to the barrier. Flexible hydraulic line working
pressures shall exceed the maximum system relief pressure; flexible
hydraulic lines shall be in accordance with SAE J517.
2.6.1.3
Hydraulic Power Unit Enclosure
A weather resistant enclosure shall be provided to enclose the hydraulic
power unit. The enclosure shall be designed for easy removal of the
hydraulic power unit components and other accessories without complete
removal of the enclosure. An access door with hinges and an inside and
outside operable lockable (exterior) door latch shall be provided.
Equipment within the enclosure shall be placed and configured so that all
periodic maintenance can be performed through the access door without
removal of the equipment. The enclosure shall be equipped with
weatherproof louver vents appropriately sized and located to dissipate
internal heat generation.
2.6.2
Manual Portable Crash Beam
The crash beam shall be manually operated by means of a counter balanced
system requiring approximately 267 N 60 pounds of force.
2.7
ELECTRICAL WORK
**************************************************************************
NOTE: Designer will check with the user if a
standby power source is required. If 1 is required,
provide the appropriate guide specification.
**************************************************************************
Motors, manual or automatic motor control equipment [except where installed
in motor control centers] and protective or signal devices required for the
operation specified herein shall be provided in accordance with Section
16402 INTERIOR DISTRIBUTION SYSTEM. All field wiring for loop detectors,
communication lines, and power circuits shall have surge protection. Any
wiring required for the operation specified herein, but not shown on the
electrical plans, shall be provided under this section in accordance with
Sections [16402 INTERIOR DISTRIBUTION SYSTEM] [and 16375A ELECTRICAL
DISTRIBUTION SYSTEM, UNDERGROUND].
SECTION 02840
Page 19
Previous Page
