Variable Speed Drive, Rotary Screw Air Compressor

The Maine Military Authority is requesting quotes for two variable speed, rotary screw air compressors for installation at Buildings 7220 and 7230 at the Limestone, Maine facility, with quotes due October 24, 2011 at 2:00 p.m. local time.

Each compressor must deliver 738 cubic feet per minute at 100 pounds per square inch gauge with full-load operation capability from 75 to 150 psig and a maximum pressure rating of 150 psig. The drive motor must be rated 150 horsepower at 460-volt, three-phase, 60-cycle operation. Each unit includes an air-cooled aftercooler, a 99.9% efficient moisture separator and condensate trap, and a control monitor displaying discharge temperature, pressure, running hours, and fault indicators. Sound levels shall not exceed 75 decibels in free-field conditions at one meter. Acceptable manufacturers are Quincy, Ingersoll Rand, or approved equivalents.

The compressor package must comply with National Electrical Code guidelines with NEMA 1 control boxes and UL-approved components. Standard warranties cover one year comprehensive coverage on the entire compressor, five years on the variable speed drive, motor, reservoir, coupling, and coolers, and ten years on the airend. Bidders must supervise installation, troubleshoot the equipment, provide two hours of onsite instruction to the Owner's Representative, secure storage until delivery, and coordinate scheduling with the Maine Military Authority. Delivery and installation are required within approximately 30 business days of contract execution. All demolition, piping, electrical connections, and related equipment will be provided under separate contracts.

Bidders must submit separate unit prices and may submit alternate bids. The State reserves the right to award on a per-item or group basis and to reject any or all quotes. Awards will be made to the lowest responsible bidder offering the best value, with evaluation criteria including product quality, conformity to specifications, delivery date, and ultimate cost. All transportation charges shall be prepaid by the contractor. Bidders must exclude Federal and Maine State Sales and Use taxes from quotes. Cash discounts must be stated separately, with only discounts of 20 days or more considered in determining the low bidder. Questions must be submitted exclusively through the Question and Answer link on the Solicitation Details View page.