available crane lifting capacity. Crane unit is specified to permit single
lifts of complete compressor under special approval only.] Should the unit
require disassembly for installation, reassembly shall be under the direct
supervision of the compressor manufacturer's authorized representative.
Complete unit shall be mounted on a rigid single or equivalent mechanically
joined steel or iron base. Submit installation sequence plans to the
Contracting Officer for approval prior to installation. [Any building
materials removed to accomplish installation shall be reinstalled if
undamaged by removal procedures; or if damaged, shall be replaced with new
materials to match original configuration.]
3.2.1
Prompt Installation
The Contractor is advised that any compressor received shall be installed
and placed in operation promptly to prevent time deterioration when not
installed. Should the Contractor sustain a delay exceeding 90 days prior
to actual installation, the Contracting Officer shall have the option of
requiring breakdown and reassembly to inspect and clean prior to placing in
operation. This work shall be at no additional cost to the Government.
3.2.2
Start-Up Services
The Contractor shall furnish the services of a compressor manufacturer's
authorized representative to supervise prestart checkout, initial start-up,
performance testing, and operator instruction. Time available shall be as
required to properly start up but not less than 3 consecutive days for the
compressor.
3.3
FIELD QUALITY CONTROL
3.3.1
Field Test Procedures
Complete field performance testing of the total system shall be performed
by the Contractor and witnessed by the Contracting Officer. Air compressor
system tests shall be conducted by either a compressor manufacturer's
factory trained and authorized representative approved by the Contracting
Officer or a qualified registered Mechanical Engineer. Tests may be run on
individual components or on the system as a whole at Contractor option.
Field tests require use of the actual compressor drive motor. Test shall
include operation at rated capacity for not less than 4 hours.
3.3.1.1
Air Compressor Performance Tests
Complete performance test shall be run at maximum load, rated load, at
point of unload but prior to unload, and unloaded condition. Data shall be
recorded listing:
a.
Air flow, inlet pressure and temperature, humidity; discharge
pressure and temperature.
b.
Intercooler water flows, temperatures, and pressures.
c.
Aftercooler water flow, temperatures, and pressures.
d.
Lube oil cooling water flow, temperatures, and pressures.
e.
Lube oil flow, pressures, and temperature.
f.
Cooling water pump flow, pressures, and motor amperage.
SECTION 15213N
Page 27
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