Atch1- FY22 HVAC Repair BPA PWS 25 Oct 21.pdf

PERFORMANCE WORK STATEMENT

FOR

HEATING/VENTILATION/AIR CONDITIONING (HVAC)

BLANKET PURCHASE AGREEMENT (BPA)

JOINT BASE SAN ANTONIO, TEXAS

25 OCTOBER 2021

1. DESCRIPTION OF SERVICES. The contractor shall provide all materials, tools, equipment, personnel, supervision, vehicles and other items necessary to assess/repair Heating/Ventilation/Air Conditioning (HVAC) systems as defined in this Performance Work Statement (PWS) at Joint Base San Antonio (JBSA) Lackland, Randolph, Fort Sam Houston and Camp Bullis. The contractor shall perform to the standards of this contract and shall be bonded and licensed in the state of Texas.

1.1. AIR HANDLER UNITS (AHU). The contractor shall assess and repair all AHU in accordance with the steps listed on Appendix 1.

1.2. FAN COIL UNITS. The contractor shall assess and repair all Fan Coil Units in accordance with the steps listed on Appendix 2.

1.3. WATER SOURCE HEAT PUMP (WSHP)/Split System. The contractor shall assess and repair all WSHP/Split System units in accordance with the steps listed on Appendix 3.

1.4. YORK CHILLER LEAK ASSESSMENT. The contractor shall perform an assessment on York chillers (operational and non-operational) to investigate any possible leaks in accordance with the steps listed on Appendix 4. Within 3 days of completion of assessment, the contractor shall provide a quote for chiller repair. The quote shall include all parts required, cost for parts, labor hours and hourly rate.

1.5. CONTRACTOR PERSONNEL. Contractor shall have a valid Texas license for air conditioner repair/maintenance. Contractor shall also have current Environmental Protection Agency, Section 608 Technician Certification for maintaining, servicing, repairing and disposing of equipment that could release ozone depleting refrigerants into the atmosphere. Contractor shall follow the current National Electrical Codes (NEC 2017) and the 2017 Ashrae Handbook.

The contractor shall provide a contract manager who shall have full authority to act for the contractor on all contract matters relating to daily operation of this contract. The name of this person shall be designated in writing to the Contracting Officer (CO) no later than five business days after the effective date of the BPA. During normal duty hours, the contract manager shall be available within two hours to meet with Civil Engineering personnel; this meeting may be via telephone contact.

1.6. QUALITY CONTROL. The contractor shall have a quality control system in place to identify, prevent and remedy defects. This system shall also ensure non-performance and continual repeat of defective service does not occur.

1.6.1. INSPECTION AND ACCEPTANCE. The office having responsibility for inspection and acceptance of services is 502d CES/CEOIH.

1.7. NORMAL HOURS OF OPERATIONS. The contractor shall perform the services required under this contract from 7:30 a.m. to 4:15 p.m., Monday through Friday. The contractor is not required to provide services on Federal Holidays.

1.8. SAFETY. The contractor shall comply with all applicable federal, state and local safety requirements, including the Air Force Occupational Safety and Health (AFOSH) Standards.

2. GOVERNMENT FURNISHED SERVICE. The Government will provide police and fire response. Contractor shall dial 911 for Emergency Force Protection or Fire Response. In the event of a medical emergency, base ambulance service for transporting an injured employee to a local hospital is available on a cost reimbursement basis. Contractor may be required to prepare necessary documentation and reimburse the government for the cost of emergency medical treatment.

A government escort shall be provided to the contractor to enter controlled areas; contractor may experience a delay until escort is available. The government will furnish electricity, water and sewage service as necessary for accomplishment of work in accordance with this BPA.

3. CONTRACTOR FURNISHED PARTS/MATERIAL. The contractor shall furnish all parts and materials necessary to perform repair/replacement of defective HVAC systems. The contractor shall provide parts that are new or reconditioned parts that are equal to, or exceed, the original manufacturer’s parts. The contractor shall be reimbursed for parts/materials in accordance with the Contracting Officer approved price list. Parts replaced remain the property of the Government.

4. PLACEMENT OF CALL/JOB ORDERS. Performance of services shall be accomplished by service request issued against a BPA. Each service call will be assigned a number and issued to the contractor by authorized individual(s) designated by the CO. Work assigned to the contractor shall consist of individual items: the exact number, quantities and dollar amount of each item involved. Each call order service requested (Appendix 5) will vary according to specific requirements of each job.

5. GENERAL.

5.1. PROTECTION OF GOVERNMENT PROPERTY. The contractor shall take all necessary precautions to protect government property, personnel and equipment.

5.2. DAMAGED PROPERTY. The contractor shall make all necessary repairs to government property if damaged during the performance of service calls. Repairs to damaged government property or replacement of damaged components shall be made at no additional cost to the government.

5.3. CRIMINAL BACKGROUND CHECKS. Contractor shall ensure a criminal background check has been performed on all employees working on the installation. Only minimum level National Crime Information Center (NCIC) background checks are required for the performance of this contract. This requirement is mandatory as called for in AFI 10-245, Air Force Antiterrorism Standards, paragraph 2.17.3. These checks shall be accomplished prior to the first day of performance.

5.4. CLEAN UP. The contractor shall keep work area(s) free from accumulation of waste materials and rubbish. The contractor shall leave the work area and premises in a clean neat condition upon completion of work each day and at the completion of each call order. All waste generated during the repair process shall be disposed of by the contractor at a disposal site located outside the installation.

6. Appendices.

Appendix 1 – Air Handler Unit Appendix 2 – Fan Coil Unit Appendix 3 – Water Source Heat Pump/Split System Appendix 4 - York Chiller Leak Assessment Appendix 5 – HVAC Service Request

APPENDIX 1

AIR HANDLER UNIT

1. Verify disconnect is in the “on” position

2. Check thermostat to see that it is set for heating or cooling service

3. Check fuses/circuit breakers serving the equipment, replace if blown or system will not reset

4. Cooling systems: check for a condensation drip tray overflow switch that may have turned off the system

5. Heating system: check actuator or heating valve for proper operation, replace if required

6. If all controls are calling for system operations but the blower is not running, check electrical motor to ensure it is not burned out and inspect blower wheel for proper operation

7. Replace blower motor and/or blower wheel if needed

8. Check AHU filters to ensure they are clean; replace with like filters if needed

APPENDIX 2

FAN COIL UNIT

1. Verify disconnect is in the “open” position

2. Verify thermostat is not in “unoccupied” mode

3. Check thermostat for proper operation

4. Clean condensation pan and clear drain line

5. Repair or replace thermostat

6. Check fan relay to see if it is energizing/de-energizing properly

7. Check if 24 volt transformer is supplying proper voltage, replace transformer if necessary

8. Ensure wire connections are properly secured

9. Check if fan motor is burned out; replace if needed

10. Check to ensure chill water/heating control valve is operating properly

11. Replace chill/hot water valve if needed

12. Replace air filters with new like air filters

13. Check to ensure chill water/heating coil is clean; clean using approved evaporator coil cleaner

APPENDIX 3

WATER SOURCE HEAT PUMP/Split System

1. Verify disconnect is in the “open” position

2. Verify thermostat is not in “unoccupied” mode

3. Clean condensation pan and clear drain line

4. Check thermostat for proper operation or aqua-stat if applicable

5. Replace thermostat if needed

6. Check fan relay to see if it is energizing/de-energizing properly

7. Check if 24 volt transformer is supplying proper voltage, replace transformer if necessary

8. Ensure wire connections are properly secured

9. Check if fan motor is burned out replace if needed

10. Check low pressure switch to ensure it is working properly and replace if required

11. Check high pressure switch to ensure it is working properly and replace if required

12. Check for low refrigerant; add refrigerant to proper charge

13. If low pressure switch is tripped, check the following:

a. Heating

1. Plugged heat exchanger on load side

2. Low water flow source side

3. Check to ensure condenser water is not too cold on the source side

4. Check for low refrigerant

b. Cooling

1. Plugged heat exchanger on the load side, replace heat exchanger if required

2. Low water flow on the load side

3. Check to ensure water is not too cold on the load side

4. Check for low refrigerant; charge to proper charge if needed

5. Clean condensation pan and clear drain line

14. If high pressure switch tripped, check the following:

a. Heating

1. Plugged heat exchanger on the load side

2. Low water flow on the load side

3. Check to ensure water is not too warm on the load side

b. Cooling

1. Plugged heat exchanger on the source side

2. Low water flow on the source side

3. Condenser water too warm on the source side

4. Clean condensation pan and clear drain line

5. Check condensing fan motor and blade, replace if needed

15. Check the compressor overload switch and replace if required

16. Check to ensure the compressor is not grounded or internal valves are bad; replace compressor if needed

17. Check system to ensure no restrictions in the condenser water flow; repair valve if needed

18. Check for proper refrigerant charge and expansion valve operation

19. Check reversing valve for proper operation if unit will not heat; replace valve if not functioning

20. Verify air and water flow rates are at proper levels before servicing refrigerant circuits

21. Check evaporator coil and replace if required

22. Check blower motor and replace if required

23. Check TXV and replace if required

24. Check Premier Link board and replace if required

25. Check CXM board and replace if required

26. Check contactor 24 volt coil and replace if required

APPENDIX 4

YORK CHILLER LEAK ASSESSMENT

Procedure for Non-operational Chiller

1. Pressurize chiller with nitrogen and trace gas (contractor provided_

2. Use electronic leak detector

3. Pin point leaking tubes

4. Mark leaking tubes

5. Check the remaining chiller for leaks

6. Check flanges

7. Check shaft seal

8. Remove the nitrogen and reset system/chiller and leave in condition it was found

9. Submit quote in accordance with PWS paragraph 1.4

Procedure for Operational Chiller

1. Use electronic leak detector

2. Check tubes for leaks (Note: this is not an Eddy Current Test)

3. Pin point leaking tubes

4. Mark leaking tubes

5. Check the remaining chiller for leaks

6. Check flanges

7. Check shaft seal

8. Reset system/chiller to normal operating condition

9. Submit quote in accordance with PWS paragraph 1.4

APPENDIX 5

HEATING/VENTILATION/AIR CONDITIONING (HVAC)

SERVICE REQUEST

CONTRACTOR:

Call No.: ________ Date Issued: ____________

REQUIREMENT:

Work start date _____________

Estimated completion date _____________ Actual date completed _____________

ITEM ESTIMATED UNIT TOTAL

NO. SERVICE QUANTITY UNIT PRICE AMOUNT

TOTAL LINE ITEM AMOUNT $___________

Call issued by:

Signature of Contract Administrator Date issued

I verify HVAC repair service was accomplished IAW BPA.

Signature of CE Personnel Date of final inspection