or accidental operation of the system. [The main power control switch
mounted on the control console shall be a key-operated type with provision
for removal of the key only when the switch is in the "OFF" position.]
[The control console shall be provided with a hinged cover with a
key-operated lock arranged to automatically lock the cover in the closed
position.]
2.2.7.5
Weather Protection
Control consoles and valve and gauge panels exposed to the weather or
subjected to water or dirt in the atmosphere shall be NEMA Type 4 for
exterior nonhazardous applications. Enclosures shall have hinged and
latched covers. Hinges shall be the separable type to permit complete
removal of the cover for maintenance. Hinges and latches shall be
constructed of stainless steel.
2.3
SPARE PARTS
The Contractor shall furnish spare parts in the quantities listed below:
ITEM
QUANTITY
[_____]
[_____]
[_____]
[_____]
2.4
SHOP ASSEMBLY AND TESTING
Each hydraulic power system shall be completely shop assembled and tested
insofar as is possible using temporary piping and wiring to determine the
correctness of fabrication and the matching of component parts to ensure
acceptable operation after field erection. Shop tests shall be made in the
presence of a representative of the Contracting Officer, unless otherwise
authorized in writing. Upon satisfactory completion of the shop assembly
and testing, preliminary acceptance will be made by the Contracting Officer.
2.4.1
Cleaning
**************************************************************************
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:
SYSTEM TYPE
CODE LEVEL
Low pressure - manual control
18/15 or better
Low to medium pressure -
electrohydraulic controls
17/14 or better
SECTION 15010A
Page 32
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