2.3.1
[Centralized Pressure Lubrication System]
2.3.1.1
[General
Provide each pump with its own individual electric motor-driven centralized
pressure lubrication system, designed to deliver the proper predetermined
or metered quantity of lubricant to each individual bearing and stuffing
box. It shall positively indicate proper or improper functioning of any
individual metering device. Mount pressure pump, individual metering
devices, and any required auxiliary operating accessories suitably on
baseplate. System shall be furnished complete and ready for operation,
including sufficient lubricant to fill each pressure pump lubricant
reservoir. Submit complete centralized pressure lubrication system to
Contracting Officer for review and approval. Furnish lubricant recommended
by pump manufacturer, subject to approval of Contracting Officer.]
2.3.1.2
[Pumping Unit
Provide Electric motor-driven central pumping unit as a complete assembly,
consisting of positive displacement type pump, flow-directing valve (if
required), lubricant reservoir, suitable pressure gage to indicate pump
discharge pressure, operation counter, pressure protective device, and
other auxiliary accessories as required to give a complete and workable
unit conforming to requirements specified. Pump shall be of multiple
individual piston, positive displacement type utilizing hardened steel
pistons closely fitted to cylinder bores to eliminate the need for packing,
and spring-actuated check valves shall not be required for its operation.
Pump shall deliver not less than 100 mL 6 cu inches of lubricant per minute
against a pressure of not less than 13.8 MPa 2,000 psi measured at the most
remote bearing connection. Lubricant reservoir shall be of suitable
metallic construction, shall have a capacity of not less than 11 kg 24
pounds of lubricant, shall be provided with suitable means that will ensure
positive priming of pump at all times (such as an atmospheric or
spring-loaded follower plate), an indicator to show quantity of lubricant
in reservoir, and a screened fill connection to permit filling reservoir by
transfer pump without exposing lubricant to atmosphere. Provide pump unit
with a fully automatic control system, capable of suitable or proper
scheduling by an adjustable synchronous motor-driven timing device, and
other required auxiliaries necessary to give a complete and workable
system. Provide controller with a "Hand Off-Automatic" selector master
switch to permit selection between push button manual and automatic time
clock operation, and to deenergize the system. Electric power will be
supplied at 115 volts single phase, 60 cycles. Use time clock setting
recommended by main pump manufacturer.]
2.3.1.3
[Metering Valves
Provide metering or measuring valve for each bearing and stuffing box. It
shall be fully hydraulic in its operation, requiring no internal springs or
check valves. Valve size to be determined by the pump manufacturer.]
2.3.1.4
[Piping
System piping shall be stainless steel tubing (ASTM A 269, Type 410 or
equal) using flared or compression-type connectors. Adequately protect and
rigidly support piping located below operating room floor in a manner
approved by Contracting Officer. Provide each individual grease line with
a "Tee" fitting, located immediately below the respective metering valve
and accessible from operating room. Also provide with a standard 6 mm 1/4
SECTION 15131A
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