SOLICITATION NOTICE
41 -- REMOVE AND REPLACE TWO (2) 25-TON UNITARY SPLIT SYSTEM AT THE WEATHER FORECAST OFFICE LOCATED IN ST. CHARLES, MO
- Notice Date
- 8/5/2009
- Notice Type
- Presolicitation
- NAICS
- 238220
— Plumbing, Heating, and Air-Conditioning Contractors
- Contracting Office
- Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), Eastern Region Acquisition Division-KC, 601 East 12th Street, Room 1756, Kansas City, Missouri, 64106, United States
- ZIP Code
- 64106
- Solicitation Number
- NWWR4000917805CMM
- Archive Date
- 9/22/2009
- Point of Contact
- Carey M. Marlow, Phone: (816)426-7460
- E-Mail Address
-
carey.m.marlow@noaa.gov
(carey.m.marlow@noaa.gov)
- Small Business Set-Aside
- Total Small Business
- Description
- The U.S. Department of Commerce, National Weather Service (NWS), Weather Forecast Office (WFO) located at 12 Research Park Drive, St Charles, MO 63304 plans to acquire a contractor capable of removing and replacing two (2) 25-ton unitary split HVAC systems. The estimated size of this project is less than $40,000.00. DESCRIPTION: The contractor shall provide and install 2-25 ton Unitary Split System at the St Louis, MO (St Charles) WFO. Remove and replace 2-Model 38AD028 or equivalent, including coil hail guards and all optional equipment on current units. Theses are paired units in lead-lag configuration. These units must be replaced while maintaining one unit in operation at all times. Current units: Air cooled condensing unit Carrier Model 38AD028 Copper Tube/Aluminum Fin Low ambient controls Unloads to 66% and 33% Factory wired control System Anti Short Cycling Control Hot gas bypass system Notes: HVAC Compressor/Condenser Unit Replacement Procedure The following is a step by step procedure for compressor clean up. The first will cover the mechanical failure and the second will cover the burnout failure. Test for acid - if any acid is indicated, follow procedures for burnout. Mechanical Failure: 1. Recover the refrigerant. 2. Remove and replace the liquid line filter-dryers. (Any time welding or soldering is done on the system, nitrogen must be drifted through the system while the welding or soldering is taking place to reduce the contaminants inside the system). 3. Install replaceable core suction line filter as close to the compressor as possible. If necessary, install an oil "trap" in the suction line to provide access to oil for future acid testing. This needs to include isolation valves for servicing. 4. Install the new compressor. 5. Pressurize the system with refrigerant and leak check the entire system (This is not a full charge it is only a charge of gas to assist in leak checking. Using an electronic leak detector is recommended - it is far more accurate). 6. After the system is determined sealed and free from leaks, the system should be placed in a deep vacuum for at least 12 hours. After the evacuation is complete, charge the system with the correct amount of new refrigerant. 7. When the charge is complete, the compressor should be put in service for no more than 4 hours. 8. After 4 hours of operation, check the oil with an acid test kit to insure the oil is acid free. A. If the oil is proven to be good no further action is required. B. If g acid is present, the oil must be replaced along with the core dryers (liquid and suction). Put the compressor back "in service". At the end of 8 hours take additional acid tests and keep repeating the process until the oil is proven clear of any acid residue. **If acid is allowed to stay in the system it will cause premature failure of the compressor windings. When the oil tests no longer show the presence of acid, check the pressure drop across the suction line filter-drier to ensure is within acceptable limits. 1) If it is within acceptable limits (usually less than 3 psig) no further action is required. 2) If the pressure drop exceeds acceptable limits, replace the filter-drier core with a pleated filter element and return the unit to service. Compressor Burnout: All compressor burnouts will be treated as "severe". 1. Recover the refrigerant. 2. Remove the liquid line filter-drier core(s). 3. Completely flush out the system with a suitable refrigerant flush. Disassemble, clean and inspect the expansion valves. Replace if necessary. A separate pump must be used to flush the system, and the flush must be disposed of in accordance with EPA standards. 4. Install new molded desiccant core liquid line filter- drier core(s). Install a replaceable core, molded desiccant core, suction line filter-dryer directly ahead of the compressor to prevent any acid or contaminates from entering the compressor. 5. Install the new compressor/condenser unit, pressurize the system and check for leaks. Leaks will most likely show up at the compressor fittings and the newly installed equipment. The expansion valves should be carefully inspected for leaks as well. 6. After the system is determined sealed and free from leaks, the system should be placed in a deep vacuum for at least 12 hours or in accordance with the manufacturer's recommendations. (Copeland AE- 1 105 recommends triple evacuation, twice to 1500 microns and finally to 500 microns) normally this will include the use of a high vacuum pump and a low vacuum micron gauge. If the manufacturer's recommendations are not available, use the Copeland recommendation. 7. After the evacuation process is completed, charge the system with the correct amount of refrigerant and start the system. 8. During the first hour of operation, check the pressure drop across the suction line filter-drier, if it becomes excessive (generally 3 - 8 psig) the filter-drier core should be replaced. 9. After 4 hour of operation, change the oil and the suction and liquid line dryer cores. 10. After 8 hours of operation take an oil acid test sample. If the sample shows any signs of contamination change the oil and the liquid and suction core dryers. Repeat this process until the oil proves to be perfectly clean of any acid. If any acid is allowed to stay in the system it will cause premature failure of the compressor motor windings. Security Requirements: The Certification & Accreditation requirements of clause CAR 1352.239-73 Security Requirements for Information Technology Resources (Oct. 2003) does not apply, and a Security Accreditation Package is not required. Any business interested in this project must respond to this announcement within 10 calendar days after publication of this notice, in order to receive a copy of the Request for Quotation. The Request for Quote (RFQ) will be posted on FedBizOpps within approximately 10 calendar days and interested parties can either download the RFQ or request a copy. To request a copy send an email to carey.m.marlow@noaa.gov. The NAICS code for this action is 238220. The acquisition will be conducted under the guidelines of FAR Part 12, Commercial Acquisition Procedures. The Eastern Region Acquisitions Division requires that all contractors doing business with the Acquisition Office must be registered with the Central Contractor Registry (CCR). For additional information and to register in CCR please access the following website: http://www.ccr.gov/. In order to register with the CCR and to be eligible to receive an award from this acquisition office, all offerors must have a Dun & Bradstreet Number (DUN). A DUN number may be acquired free of charge by contacting Dun & Bradstreet on-line at https://www.dnb.com/product/eupdate/requestOptions.html or by phone at (800) 333-0505.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DOC/NOAA/CASC/NWWR4000917805CMM/listing.html)
- Place of Performance
- Address: NWS WFO ST. CHARLES, MO, 12 RESEARCH PARK DRIVE, ST. CHARLES, MO 63304, ST. CHARLES, Missouri, 63304, United States
- Zip Code: 63304
- Zip Code: 63304
- Record
- SN01900164-W 20090807/090806000915-41c936f527020ac17d18a63c89f118ad (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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