REQ 1769495 75 H.P. Rotary Air Compressor The Dallas County Hospital District requests proposals for a 75 horsepower rotary air compressor. The successful vendor will be responsible for supplying equipment and services conforming to the items described in the following specifications: 1. 460v/60hz/3 phase electric drive motor. Minimum 1800 RPM continuous duty, direct-coupled, single stage, rotary screw 2. Minimum 356 ACFM at 100 PSIG. 3. Vibration isolation mounts and bolt-down hardware (if required) must be provided. Maximum noise level at 1 meter without enclosure not to exceed 87 decibels. 4. Adjustable automatic start-up/stop function (approximate 100 psi cut-in and 125 psi cut-out). 5. Must have a motor starter with electrical overload protection. 6. Air pressure indicator, oil temperature indicator and an hour meter. 7. An air/oil separator capable of limiting oil carry-over to less than 3 ppm by weight at full load operating pressure. 8. A.S.M.E. air pressure discharge safety valve. 9. Automatic high temperature shut-down switch and automatic high pressure shut-down. 10. Oil level indicator. 11. Water-cooled oil cooler, water-cooled after cooler (capable of reducing the discharge air temperature to within 15 degrees of ambient temperature) and automatic condensate drain. 12. Spin-on oil filter and air intake filter (heavy duty, canister type, 5 microns). 13. Air discharge check valve and discharge silencer or blow-down muffler. 14. Warranty to cover parts and labor on the air end for a minimum of 5 years and 1 year for the rest of the unit. 15. Existing 50 hp unit is to be removed and hauled off. 16. Unit must be pre-wired and plumbed with all components to be ready to run after final hook-up to air system, water and electric.
