SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
F. General Description Control Panels: Automatic control station with load control and protection
functions. Comply with NEMA ICS 2 and UL 508.
1. Enclosure: NEMA ICS 6, Type 12 control panel unless otherwise indicated.
2. Motor Controllers: Full-voltage, combination magnetic type with undervoltage release
feature and motor-circuit-protector-type disconnecting means and short-circuit protective
device.
3. Control Voltage: 120-V ac or less, using integral control power transformer.
4. Motor Overload Protection: Overload relay in each phase.
5. Starting Devices: Hand-off-automatic selector switch in cover of control panel, plus pilot
device for automatic control.
6. Instrumentation: Include discharge-air pressure gage, air-filter maintenance indicator,
hour meter, compressor discharge-air and coolant temperature gages, and control
transformer.
7. Alarm Signal Device: For connection to alarm system to indicate compressor trouble.
2.2 OIL-FLOODED, ROTARY-SCREW AIR COMPRESSORS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following available manufacturers offering products that may be incorporated into the Work
include, but are not limited to, the following:
B. Basis-of-Design Product: Subject to compliance with requirements contained in Section
012513, Product Substitution Procedures, provide product indicated on Drawings or
comparable product by one of the following:
1. Ingersoll-Rand; Air Solutions Group.
2. Quincy Compressor; an EnPro Industries Company.
3. Rogers Machinery Company.
4. Sullair Corporation.
C. Air Compressor.
1. Compressor Assembly: Single stage, oil-flooded, rotary-screw type with lubricated
helical screws and lubricated gear box.
2. Standard-Air Capacity of Each Air Compressor: 156 scfm minimum free air or 160 acfm
at 660 ft elevation and 68 °F.
3. Discharge-Air Pressure: 135 psig, maximum, 125 psig nominal.
4. Intake-Air Temperature: 68 deg F normal, 95 deg F maximum summer time.
5. The compressor shall have a high efficiency axial inlet. The compressor shall have
tapered roller bearings on the male and female rotor discharge and suction end to contain
axial and radial thrusts. The driven shaft shall be sealed by a triple lip seal arrangement
for long life.
6. Inlet Air Filter: Description: Combination inlet-air filter-silencer, suitable for remote
installation, for each air compressor. Dry type, with maintenance indicator and cleanable
replaceable filter element with silencer tubes or other method of sound reduction. Match
capacity of air compressor, with filter having collection efficiency of 99 percent retention
of particles larger than 10 micrometers.
7. Coupling: Nonlubricated, flexible type and shall include an OSHA type coupling guard.
8. Cooling/Lubrication System: Unit-mounted, air-cooled exchanger package pre-piped to
unit; with air pressure circulation system with coolant stop valve, full-flow
Contract 44577 KW Annex – Rev. E 44577-CSI-SPEC-001 221519 - 5