19BY7025Q0010_ Attachment 1 _SOW.docx
DOCX document 60 KB Posted
- Solicitation number
- 19BY7025Q0010
- Issued by
-
Department of State
About this file
This document is a Statement of Work (SOW) for preventive maintenance services for Airstack (Multistack) Chiller systems at the United States Embassy in Bujumbura, Burundi. The SOW details comprehensive annual maintenance requirements for two chiller units: a 12-module WTFO-30A Air Cooled Modular Chiller and a 4-module WTFO-30A Air Cooled Modular Chiller, both located on the NOB roof. The maintenance tasks include 52 specific procedures covering electrical systems, refrigerant checks, mechanical inspections, cleaning, sensor calibration, and operational testing.
The contract is issued by the Department of State (Solicitation Number: 19BY7025Q0010) and requires the contractor to provide all necessary labor, tools, materials, and safety equipment for performing the preventive maintenance. Key requirements include providing Material Safety Data Sheets (MSDS), wearing appropriate safety protection, reporting any discrepancies with detailed reports and material quotes, and maintaining comprehensive documentation. The contractor must also provide copies of equipment manuals, software licenses, and perform extensive diagnostic and maintenance tasks to ensure the optimal functioning of the chiller systems.
View the file
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
Preventive Maintenance Service Contract Scope of Work For Airstack (Multistack) Chiller United States Embassy Bujumbura, Burundi Year 2025
Exhibit A - - STATEMENT OF WORK
I. GENERAL INFORMATION:
The United States Embassy in Bujumbura, Burundi requires professional services and contractor cost proposals to perform preventive maintenance services of the facility’s Airstack Chiller systems.
II. PROJECT REQUIREMENTS:
| DESCRIPTION OF EQUIPMENT *: | |
| *Please see attachment at the end of this sheet for more details |
1. WTFO - 30A Air Cooled Modular Chiller 12 Module
2. WTFO - 30A Air Cooled Modular Chiller 4 Module
III. GENERAL REQUIREMENTS:
The Contractor under this SOW will be responsible for labor, tools, and some materials required to carry out all preventive maintenance as outlined in this SOW. Copies of manuals for all equipment shall be found in the Facilities and maintenance library
IV. SCOPE OF WORK - - CHILLER PREVENTIVE MAINTENANCE
Contractor shall provide all materials (see 8.1), supervision, labor, tools and equipment to perform preventive maintenance. All personnel working in the vicinity shall wear and /or use safety protection while all work is performed. Any questions or injuries shall be brought to the attention of the Post Occupation Safety and Health Officer (POSHO). Material Safety Data Sheets (MSDS) shall be provided by the Contractor for all HAZMAT materials. Copies will be provided to the COR for approval.
If any discrepancies are found with the Chiller system that are not covered under this scope of work, then the contractor must provide the following:
1. Detailed report noting the discrepancy found.
2. Bill of Materials (BOM) to include component name, quantity, part #, and price for any repair material required and material lead time.
3. Price quote for repair labor.
At a minimum, the following work must be done:
Annual Schedule
PROCEDURES: (ANNUAL)
Maintenance Task
1. Check chiller controls communications module to the overall embassy building HVAC automated controls for functionality. Replace or install controls communications parts as needed. Copies of any and all software and licenses needed to control or to adjust the communications module shall be given to the post.
2. Review the Airstack Chiller daily log sheet. Perform trending and assess any Needed corrective action.
3. Check for program updates, if found to be out of date, then update.
4. Tighten check power connections.
5. Tighten check control power connections.
6. Visually check contactors and relays for damage and evidence of overheating.
7. Dry clean all electrical compartments.
8. Check and test compressor terminals for tightness. Replace compressor if found to be not faulty or has a burned out motor.
9. Check and record amp draws on compressors, pumps and motors.
10. Check sensors, within 2% of actual temperatures or pressures, if is out of range or faulty, do replace.
11. Check low ambient fan cycling controls.
12. Visually check the panel breaker, power wire and EG transfer.
13. Check incoming voltage for imbalance.
14. Check crankcase heaters for proper operation, if found to be not working. Then replace.
15. Check and cycle Free Cool operating controls if equipped.
16. Perform a visual check for oil or leaks. If one of the module is leaking. Correct it.
17. Visually check brazed joints and condenser for oil or leaks. If one of the module is leaking. Correct it
18. Visually check refrigerant safety relief valve for oil or leaks.
19. Check operation of liquid line solenoid valves. If found to be not working, do replace.
20. Check TXV sensing bulb connection and adjust as per manufacturer’s recommendation.
21. Check and record ambient temperatures, water temperature, refrigerant superheat and sub cooling. Adjust as required.
22. Analyze refrigerant and oil with test tube analysis kit.
23. Check pressure transducers and high-low pressure switches, if found to be out of range , then replace.
24. Inspect and tighten shredder cores and caps.
25. Check system refrigerant sight glass for leaks or moisture and if there is any shortage of gas add as necessary.
26. Check glycol concentration (Tank). For chiller2
27. Check glycol concentration (System) for CHILLER 2
28. Collect water samples for lab analysis.
29. Manually switch Hydronic pumps from 1 to 2 or from 2 to 1.
30. Check all water side valves for proper position.
31. Clean basket strainers, switch strainer valve position.
32. Clean system strainers.
33. Clean header strainers in accordance with Multistack Procedures.
34. Check system flow switch operation.
35. Switch lead/lag switch on pumps.
36. Check pump motor end bells for debris.
37. Check pump seals for leakage.
38. Grease pump motor bearings.
39. Power wash the inside of the pump cabinet.
40. Power wash all outer surfaces with suitable cleaner.
41. Water hose rinse all outer surfaces.
42. Clean condenser coils with foaming cleanser if necessary.
43. Check insulation surfaces for integrity, condensate leaks.
44. Perform a visual check for system water leaks.
45. Check condenser fan shrouds, mounting and blades.
46. Check fan hub clearance to motor.
47. Check the chiller for leaks and correct.
48. Calibrate chiller control system, load limiting system, and safety controls.
49. Inspect system for signs of corrosion. Remove corrosion, prime with corrosion inhibitor, paint to match original condition. Carefully inspect all fasteners to ensure integrity and replace any which have corroded. All replacement components, parts, and materials should be of corrosion resistant.
50. Check all refrigerant circuits and replenish as necessary. Contractor shall supply all materials (see 8.1).
51. Cycle all valves at least two times.
52. Perform operational test and return to service.
Equipment List:
END OF STATEMENT OF WORK
image1.emf
Microsoft_Excel_Worksheet.xlsx Sheet1
Equipment Manufacturer Make Model Specifications Location
CH-NOB-B-1 Ch 1 Multistack Airstack WTFO-30A 12 modules NOB ROOF
CH-NOB-B-1 Ch 2 Multistack Airstack WTFO-30A 4 Modules NOB ROOF
Sheet2
Sheet3
File details come from the government source that posted it. Updated .