Attch 1 - SOW.docx

Embassy Podgorica UNCLASSIFIED U.S. Department of State

STATEMENT OF WORK FOR

PREVENTIVE MAINTENANCE SERVICE CONTRACT

1. Rotary screw air cooled water chillers (York)

2. Dedicated Heat Recovery Chiller (Multistack)

3. Air cooled Chiller (Multistack / Airstack)

United States Embassy Podgorica in Montenegro

12/2/2024

American Embassy XXXX UNCLASSIFIED U.S. Department of State

TABLE OF CONTENTS

Section Page

Attachments:

DESCRIPTION

The American Embassy Podgorica in Montenegro requires preventive maintenance services for the HVAC Systems. These services shall result in all systems being serviced under this agreement being in good operational condition when activated. If this work is to be performed on systems accessing the PCC/CAA areas of the building, please see section 6.3 for security requirements.

1.1. Type of Contract

This is a firm fixed price contract payable entirely in US Dollars. Prices for all Contract Line-Item Numbers (CLIN) shall include proper disposal of toxic substances as per Item 8.3 where applicable. No additional sums will be payable for any escalation in the cost of materials, equipment or labor, or because of the contractor's failure to properly estimate or accurately predict the cost or difficulty of achieving the results required. The contract price will not be adjusted due to fluctuations in currency exchange rates.

1.2. Period of Performance

The contract will be for a period of one-year, with a maximum of four one-year optional periods of performance and will be expected to commence within 30 days of contracting award date.

PRICING

The rates below include all costs associated with providing preventive maintenance services in accordance with the attached scope of work, and the manufacturer’s warranty including materials, labor, insurance (see FAR 52.228-4 and 52.228-5), overhead, profit and GST (if applicable). Additional equipment details are in Section 4.1.

2.1. Base Year. The Contractor shall provide the services shown below for the 12 month base period of the contract

EXHIBIT A

Total Base Year

2.2. Option Year 1. The Contractor shall provide the services shown below for Option Year 1 of the contract.

EXHIBIT A

Total Year 1

2.3. Option Year 2. The Contractor shall provide the services shown below for Option Year 2 of the contract.

EXHIBIT A

Total Year 2

2.4. Option Year 3. The Contractor shall provide the services shown below for Option Year 3 of the contract.

EXHIBIT A

Total Year 3

2.5. Option Year 4. The Contractor shall provide the services shown below for Option Year 4 of the contract.

EXHIBIT A

Total Year 4

2.6.

2.7 Repair option. Repairs are NOT included under this agreement (see 7.1.4) and are to be done outside this contract. However, the Government requires current labor rates in the event that there is an issue discovered during the preventive maintenance of the specified equipment. Please provide your current labor rates in the Repair Option fields below. As stated in 7.1.4 any necessary repairs or parts will be submitted for approval and then billed against a separate PO. The Contractor is not approved to do any additional work without specific authorization from the Contracting Officer.

NOTICE TO PROCEED

After Contract award and submission of acceptable insurance certificates and copies of all applicable licenses and permits, the Contracting Officer will issue a Notice to Proceed. The Notice to Proceed will establish a date (a minimum of ten (10) days from date of Contract award unless the Contractor agrees to an earlier date) on which performance shall start.

EQUIPMENT AND PERFORMANCE REQUIREMENTS

4.1. The Embassy Podgorica Montenegro requires the Contractor to maintain the following equipment in a safe, reliable and efficient operating condition. Please see equipment list below for a more detailed description.

1. Rotary screw air cooled water chiller Manufacturer: YORK Model No: YVAA0183ABV50BAVNXX Net cooling capacity: 563 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R134a

2. Rotary screw air cooled water chiller Manufacturer: YORK Model No: YVAA0183ABV50BAVNXX, YORK Net cooling capacity: 563 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R134a

3. Dedicated heat recovery unit Manufacturer: MULTISTACK Mechanical Module Model No: MSH105XNICMAAA-BBHMH--AAQ-AA-B Condenser Pump Module Model No: PMM3.0AI+ACDDG.-.--.--.--.DB Evaporator Pump Module Model No: PMM2.0AI+ACDDG.-.--.--.--.DB Net cooling capacity: 94.6 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R410A

4. Air cooled Chiller Multistack- Airstack Manufacturer: AIRSTACK / MULTISTACK Model No:

Net cooling capacity:

Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R410A

4.2. The Contractor shall provide all necessary managerial, administrative and direct labor personnel, as well as all transportation, equipment, tools, supplies and materials required to perform inspection and maintenance, and component replacement as required to maintain the systems in accordance with this work statement and Manufacturer’s recommendations. Under this Contract the Contractor shall provide:

· Technicians servicing Multistack DHR unit must have a minimum Class II EPA certification.

· Technicians servicing York chillers must be a York Certified Technician who has been trained and qualified to inspect, adjust, and perform scheduled preventive maintenance on this type of equipment.

· Technicians servicing Airstack / Multistack chillers must be Factory Authorized Technicians.

4.3. Performance Standards

The chillers shall be clean and in good operating condition upon completion of the service. The preventive maintenance service shall result in the parts of the system serviced being in a condition to operate efficiently and effectively.

HOURS OF PERFORMANCE

5.1. The Contractor shall maintain work schedules. The schedules shall take into consideration the hours that the staff can effectively perform their services without placing a burden on the security personnel of the Post. The Contractor shall deliver standard services between the hours of 8:00AM and 4:30 PM Monday through Friday. No work shall be performed on US Government and local holidays. Below is a list of the US holidays. Prior confirmation regarding holidays will be necessary with COR, since local holidays are not listed.

(a) The Department of State observes the following days as US holidays:

New Year’s Day Martin Luther King’s Birthday Washington’s Birthday Memorial Day Juneteenth Independence Day Labor Day Columbus Day Veterans Day Thanksgiving Day Christmas Day Any other day designated by Federal law, Executive Order, or Presidential Proclamation.

Local holidays as announced on Embassy website.

ACCESS TO GOVERNMENT BUILDINGS AND STANDARDS OF CONDUCT

6.1 General. The Contractor shall designate a representative who shall supervise the Contractor’s technicians and be the Contractor’s liaison with the American Embassy Podgorica Montenegro. The Contractor’s employees shall be on-site only for contractual duties and not for any other business or purpose. Contractor employees will be given access to the equipment and equipment areas and will be escorted by Embassy personnel.

6.2 Personnel Security. The Government reserves the right to deny access to U.S.-owned and U.S.-operated facilities to any individual. The Contractor shall provide the names, biographic data and police clearance on all Contractor personnel to the Government. Submission of information shall be made within 30 days of award of contract. No technician will be allowed on site without prior authorization. Note: this may include cleared personnel if advance notice of visit is not given at least one week before the scheduled visit.

6.2.1 Vehicles. Contractor vehicles will not be permitted inside the embassy compound without prior approval. If vehicle access is necessary, submit contractor vehicle information (Make, Model, License Plate #) along with a written justification as to why access is necessary. This shall be submitted to the COR at least one (1) week prior to the visit.

6.2.2 Government shall issue identity cards to Contractor personnel, after they are approved. Contractor personnel shall display identity card(s) on their uniform at all times while providing services under this contract. These identity cards are the property of the US Government. The Contractor is responsible for their return at the end of the contract, when an employee leaves Contractor service, or at the request of the Government.

6.3 Security Clearances. All work done in CAA and PCC areas shall be performed by cleared American personnel as needed to complete the services. The Contractor shall work closely with the COR, the Post Facility Manager [FM] or the General Services Officer [GSO]. This contract requires a cleared American technician with a Top Secret security clearance.

6.4 Standards of Conduct

6.4.1 General. The Contractor shall maintain satisfactory standards of employee competency, conduct, cleanliness, appearance, and integrity and shall be responsible for taking such disciplinary action with respect to employees as may be necessary. Each Contractor employee shall adhere to standards of conduct that reflect credit on themselves, their employer, and the United States Government. The Government reserves the right to direct the Contractor to remove an employee from the worksite for failure to comply with the standards of conduct. The Contractor shall immediately replace such an employee to maintain continuity of services at no additional cost to the Government.

6.4.3 Neglect of Duties. Neglect of duties is unacceptable. This includes sleeping while on duty, unreasonable delays or failures to carry out assigned tasks, conducting personal affairs during duty hours and refusing to render assistance or cooperate in upholding the integrity of the worksite security.

6.4.4 Disorderly Conduct. The Contractor shall not condone disorderly conduct, use of abusive or offensive language, quarreling, and intimidation by words, actions, or fighting. Also included is participation in disruptive activities that interfere with normal and efficient Government operations.

6.4.5 Intoxicants and Narcotics. The Contractor shall not allow its employees while on duty to possess, sell, consume, or be under the influence of intoxicants, drugs or substances which produce similar effects.

6.4.6 Criminal Actions. Contractor employees may be subject to criminal actions as allowed by law in certain circumstances. These circumstances include but are not limited to the following actions: falsification or unlawful concealment, removal, mutilation, or destruction of any official documents or records or concealment of material facts by willful omission from official documents or records; unauthorized use of Government property, theft, vandalism, or immoral conduct; unethical or improper use of official authority or credentials; security violations; organizing or participating in gambling in any form; and misuse of weapons.

6.4.7 Key Control. The Contractor will not be issued any keys. The keys will be checked out by a “Cleared American” escort on the day of service requirements.

6.4.8 Notice to the Government of Labor Disputes. The Contractor shall inform the COR of any actual or potential labor dispute that is delaying or threatening to delay the timely performance of this contract.

SCHEDULED PREVENTIVE MAINTENANCE

7.1. General

7.1.1. The Contractor shall perform preventive maintenance as outlined in Exhibit A - STATEMENT OF WORK. The objective of scheduled preventive maintenance is to eliminate system malfunction, breakdown and deterioration when units are activated/running.

7.1.2. The Contractor shall inventory and replace expendable parts (eg, filters, belts, hoses, gaskets) that have become worn due to wear and tear. The Government will supply consumable spare parts necessary for maintenance. Contractor shall provide a list of expendable and common parts to be maintained on site so that these are readily available for normal maintenance to include: hoses, belts, oil, chemicals, coolant, filters (Air, Fuel, Oil), grease, sealant, thermostat, fuses etc. The contractor shall inventory the supply after each visit and provide a list to the COR and Facility manager of recommended replacement supplies. The parts must be OEM approved parts.

7.1.3. Reclaimed refrigerants within post compounds are to be retained and stored and may be used if not contaminated. Refrigerants shall be stored in containers clearly indicating the refrigerant type.

7.1.4. Exclusion.

This contract does NOT include repair of equipment and replacement of hardware (e.g. bearings, pistons, piston rings, crankshaft, gears.) Hardware replacements will be separately priced out by the Contractor for the Government’s approval and acceptance. The Government has the option to accept or reject the Contractor’s quote for parts and reserves the right to obtain similar spare parts from other competitive sources. If required by the Government, the Contractor shall utilize Government-purchased spare parts, if awarded the work. Such repairs/replacements will be accomplished by a separate purchase order. However, this exclusion does not apply if the repair is to correct damage caused by Contractor negligence.

7.1.5. Replacement/repair of any electronic or electrical parts shall be approved by the COR prior to installation of the part. If the Contractor proceeds to replace any electronic or electrical parts without COR approval, the Contractor shall de-install the parts at no cost to the Government.

7.1.6. A recommended spare parts list shall be obtained by the contractor from the manufacturer or distributor and provided to the COR and Facility Manager to procure.

7.1.7. Parts/materials/tools procurement and delivery for the CAA/PCC areas shall be at the discretion of the Regional Security Officer (RSO) and the General Services Officer (GSO)

7.2 Checklist Approval

The Contractor shall submit to the COR a schedule and description of preventive maintenance tasks which the Contractor plans to perform. The Contractor shall prepare this schedule and task description in a checklist format for the COR’s approval prior to contract work commencement.

7.2.1. The Contractor shall provide trained technicians to perform the service at frequencies stated in Exhibit A and on the equipment called out in this SOW. The technician shall sign off on every item of the checklist and leave a copy of this signed checklist with the COR or the COR's designate after each maintenance visit.

7.2.2. It is the responsibility of the Contractor to perform all manufacturers recommended preventive maintenance including preventive maintenance recommended by the manufacturers’ technical manuals for the respective equipment.

7.2.3 Additionally, the maintenance contractor shall obtain and keep at the post O&M binders provided by the manufacturers. These binders shall be placed in a location accessible to post personnel to review as needed.

PERSONNEL, TOOLS, CONSUMABLE MATERIALS AND SUPPLIES

The Contractor shall provide trained and certificated technicians with the appropriate tools and testing equipment for scheduled maintenance, safety inspection, and safety testing as required by this Contract. The Contractor shall provide all of the necessary materials and supplies to maintain, service, inspect and test all the systems to be maintained.

8.1 Contractor furnished materials include but are not limited to appropriate tools, testing equipment, safety shoes and apparel for technicians, hands, hearing and eye protection and cleaning material.

8.2 Repairs are not included in this contract. See 7.1.4. Exclusions.

8.3 Disposal of used oil, fuel, battery and other toxic substances shall be stored and disposed of according to U.S Government and Local law.

SOFTWARE, LICENSES AND PASSWORDS

Copies of all software and licenses needed to control or to adjust the communications module shall be given to the post upon completion of the work.

DELIVERABLES

Provide a written report to COR and Post Facilities Manager containing following:

a) System information (make, model, all device types)

b) Pass/Fail of each feature and type of component tested. If a device fails, note device type, address and location within Post

c) Any comments on system (or device) condition pertaining to service life and dependability.

d) Full printout of test from system printer if available

e) Testing of refrigerant gas by Gas Analyzer

f) Reports shall also include following:

g) Documentation of all operational readings and settings.

h) Assessment of alarms and measures taken to correct alarm and fault conditions.

i) Detailed list of maintenance procedures performed.

j) Recommended OEM spare parts and BoM

k) Recommended additional service or repairs and cost estimates

l) Recommended upgrades or enhancements. The following items shall be delivered under this contract:

INSURANCE REQUIREMENTS

11.1 Personal Injury, Property Loss or Damage (Liability). The Contractor assumes absolute responsibility and liability for any and all personal injuries or death and property damage or losses suffered due to negligence of the Contractor’s personnel in the performance of this Contract.

The Contractor’s assumption of absolute liability is independent of any insurance policies.

11.2 Insurance. The Contractor, at its own expense, shall provide and maintain during the entire period of performance of this Contract, whatever insurance is legally necessary. The Contractor shall carry the following minimum insurance:

Public Liability Insurance

Workers’ Compensation and Employer’s Liability

11.3 Worker's Compensation Insurance. The Contractor agrees to provide all employees with worker's compensation benefits as required under local laws (see FAR 52.228-4 “Worker’s Compensation and War-Hazard Insurance Overseas”).

LOCAL LAW REGISTRATION

If the local law or decree requires that one or both parties to the contract register the contract with the designated authorities to ensure compliance with this law or decree, the entire burden of this registration shall rest upon the Contractor. Any local or other taxes which may be assessed against the Contract shall be payable by the Contractor without Government reimbursement.

QUALITY ASSURANCE PLAN (QAP).

13.1 Plan. This plan is designed to provide an effective surveillance method to promote effective Contractor performance. The QAP provides a method for the Contracting Officer's Representative (COR) to monitor Contractor performance, advise the Contractor of unsatisfactory performance, and notify the Contracting Officer of continued unsatisfactory performance. The Contractor, not the Government, is responsible for management and quality control to meet the terms of the Contract. The role of the Government is to conduct quality assurance to ensure that Contract standards are achieved.

Services.

Performs all services set forth in the Statement of Work (SOW)

13.2 Surveillance.

The COR will receive and document all complaints from Government personnel regarding the services provided. If appropriate, the COR will send the complaints to the Contractor for corrective action.

13.3 Standard.

The performance standard is that the Government receives no more than one (1) customer complaint per month. The COR shall notify the Contracting Officer of the complaints so that the Contracting Officer may take appropriate action to enforce the inspection clause (FAR 52.212-4, Contract Terms and Conditions-Commercial Items), if any of the services exceed the standard.

13.4. Procedures.

13.4.1 If any Government personnel observe unacceptable services, either incomplete work or required services not being performed, they will immediately contact the COR.

13.4.2 The COR will complete appropriate documentation to record the complaint.

13.4.3 If the COR determines the complaint is invalid, the COR will advise the complainant. The COR will retain the annotated copy of the written complaint for his/her files.

13.4.4 If the COR determines the complaint is valid, the COR will inform the Contractor and give the Contractor additional time to correct the defect, if additional time is available. The COR shall determine how much time is reasonable.

13.4.5 The COR shall, as a minimum, orally notify the Contractor of any valid complaints.

13.4.6 If the Contractor disagrees with the complaint after investigation of the site and challenges the validity of the complaint, the Contractor shall notify the COR. The COR will review the matter to determine the validity of the complaint.

13.4.7 The COR will consider complaints as resolved unless notified otherwise by the complainant.

13.4.8. Repeat customer complaints are not permitted for any services. If a repeat customer complaint is received for the same deficiency during the service period, the COR will contact the Contracting Officer for appropriate action under the Inspection clause.

TRANSITIONS/CONTACTS

Within 30 days after contract award, the Contracting Officer may ask the contractor to develop a plan for preparing the contractor to assume all responsibilities for preventive maintenance services. The plan shall establish the projected period for completion of all clearances of contractor personnel, and the projected start date for performance of all services required under this contract. The plan shall assign priority to the selection of all supervisors to be used under the contract.

14.1 On site contact. The following are the designated contact personnel between the US Embassy Podgorica and the Contractor:

COR

Jelena Gordijan Vulicevic - Post Control Officer (PCO) GordijanJV@state.gov The Post Control Officer (PCO) will be the contractor’s point of contact at the U.S. Embassy Podgorica Montenegro. All questions concerning coordination of service activities while at post shall be directed to the Post Control Officer, with weekly reporting to the COR:

PCO

Jelena Gordijan Vulicevic - Post Control Officer (PCO) GordijanJV@state.gov

SUBMISSION OF INVOICES

The Contractor shall submit an invoice after each preventive maintenance service has been performed. No invoice for preventive maintenance services will be considered for payment unless accompanied by the relevant documentation.

Invoices to be uploaded to Invoice Processing Platform at http://www.ipp.gov

CHARLESTON, SC 29415

EXHIBIT A

STATEMENT OF WORK

I. GENERAL INFORMATION:

The United States Embassy Podgorica Montenegro requires professional services and contractor cost proposals to perform preventive maintenance services of the facility’s Rotary screw air cooled water chillers

II. PROJECT REQUIREMENTS:

DESCRIPTION OF EQUIPMENT:

Dedicated Heat Recovery Unit (Multistack)

3 modules 10 compressors

1. Rotary screw air cooled water chiller Manufacturer: YORK Model No: YVAA0183ABV50BAVNXX Net cooling capacity: 563 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R134a

2. Rotary screw air cooled water chiller Manufacturer: YORK Model No: YVAA0183ABV50BAVNXX, YORK Net cooling capacity: 563 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R134a

3. Dedicated heat recovery unit Manufacturer: MULTISTACK Mechanical Module Model No: MSH105XNICMAAA-BBHMH--AAQ-AA-B Condenser Pump Module Model No: PMM3.0AI+ACDDG.-.--.--.--.DB Evaporator Pump Module Model No: PMM2.0AI+ACDDG.-.--.--.--.DB Net cooling capacity: 94.6 KW Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R410A

4. Air cooled Chiller Multistack- Airstack Manufacturer: AIRSTACK / MULTISTACK Model No: ASPO206 Nominal power supply: 400 V / 50 Hz / 3 Refrigerant type: R410A

III. GENERAL REQUIREMENTS:

The Contractor under this SOW shall be responsible for labor, tools, and materials required to carry out all preventive maintenance as outlined in this SOW. The technician shall sign off on every task specified in the Statement of Work and will provide a typewritten copy of their report to the COR or the COR's designate within five business days of each maintenance visit.

IV. SCOPE OF WORK - CHILLERS MAINTENANCE

Contractor shall provide all materials, 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) immediately. Material Safety Data Sheets (MSDS) shall be provided by the Contractor for all HAZMAT materials. Copies shall be provided to the COR for approval.

The Contractor shall inventory, supply a list of expendable parts (e.g., filters, belts, hoses, gaskets) and major spare parts that have become worn down due to wear and tear, or are recommended to have in stock The USG shall maintain a supply of expendable and common parts on site so that these are readily available for normal maintenance to include: hoses, belts, oil, chemicals, coolant, filters (Air, Fuel, Oil), grease, sealant, thermostat, fuses and oil spill containment kits. The contractor will supply the appropriate tools, testing equipment, safety shoes and apparel for technicians, personal protective equipment (hands, hearing, eye protection), cleaning material. Maintenance materials shall be unused and are to be industry standard and intended for the task to be performed. Parts are to be OEM approved.

SAFETY AND SPECIAL INSTRUCTIONS:

1. Follow site safety procedures and supervisor’s instructions.

2. Schedule work with operating personnel.

3. Follow site safety rules for lockout and tagout.

4. Lockout (LOTO) and disconnect the main power before any work at the electrical system, in particular tightening the main supply lugs, in order to avoid the hazard of electrical shock, which could result in serious personal injury or death. Apply LOTO on mechanical components also prior to any work on/near hazardous parts/equipment (compressor, belts, fans, etc.)

5. Be very careful when climbing roof access ladders.

6. Follow safety and environmental rules for refrigerants.

7. Don't vent refrigerants. Refrigerants must be recovered

8. Record and report equipment damage or deficiencies.

9. Review and follow the manufacturer’s O&M instructions.

10. Record results in the equipment history log.

11. Allow only qualified personnel to do maintenance work on this equipment.

MAINTENANCE PROCEDURES:

Recommended Tools and Safety Equipment:

· Mechanics tool set.

· Electrical tool set.

· Refrigeration tools and instruments.

· Rags and cleaning materials.

· Coil cleaning chemicals (Post provided).

· Leak check equipment.

· General personnel protective equipment (PPE) and in particular PPE for handling refrigerants.

· Low pressure hose (Post provided).

Note: Coils on York must not be washed with high pressure.

· Fin comb suitable for use on York microchannel fins.

Note: The coils on the York units are microchannel and a standard fin comb is not suitable for use.

· Acid field test kit for oil.

· Tube-type moisture/acid analyzer for refrigerant.

· Ladder (Post provided).

1. Rotary screw air cooled water chillers (YORK)

ANNUAL PREVENTIVE MAINTENANCE

1. Check programmable operating setpoints and safety cutouts against established settings. Assure they are correct for the application.

2. Record system operating temperatures and pressures in the York Operators Log.

3. Run system diagnostics test.

4. Check compressor and evaporator heater operation.

5. Check compressor superheat on evaporator and economizer TXV/EEVs. Adjust as required.

6. Check condenser and economizer subcooling. Adjust as required.

7. Check oil level in oil separator sight glass.

8. Sample compressor oil, check for acid (field test kit), and replace if necessary.

9. Replace oil filters.

10. Check liquid line sight glass/moisture indicator.

11. Thoroughly clean the condenser coils.

12. Leak check the chiller.

13. Check electrical connections for tightness and evidence of damage or overheating.

14. Check for dirt in the control panel. Check door gasket for sealing integrity.

15. Check contactors, sensors, and mechanical safety limits.

16. Test fans for proper operation.

17. Perform operational test and load to 100%.

18. Verify motor amperage load limit.

19. Inspect plumbing and valves for leaks.

20. Wash condenser coils with a downward motion trough the coils.

21. Tighten all electrical connections.

22. Check and clean strainers.

23. Inspect the unit for any sign of damage or overheating. Clean the interior of all cabinets.

24. Clean the heat sink.

25. Check Glycol concentration.

26. Change 4.25 gal of VSD glycol every five years. The next change is scheduled for 2028.

27. Any other manufacturer required annual maintenance services not listed above should be performed.

2. Dedicated heat recovery chiller (MULTISTACK)

ANNUAL PREVENTIVE MAINTENANCE

Electrical Components:

1. Check for excessive vibration.

2. Check main power supply voltage.

3. Check all external interlocks.

4. Inspect compressor terminals.

5. Check compressor crankcase heater operation.

6. Tighten all contactor, relay and circuit breaker terminals.

7. Check and calibrate all compressor safety controls.

8. Check and record compressor voltages and amperages.

9. Check and record pump and condenser fan amperages.

10. Dry clean electrical panels, remove debris.

Refrigeration Circuits:

1. Analyze refrigerant with tube-type moisture/acid analyzer.

2. Check and record refrigerant subcooling and superheat.

3. Check liquid solenoid valves.

4. Check expansion valve and sensing bulb connections.

Evaporator and Condenser Water System:

1. Clean the pumps and heat exchanger strainers.

2. Remove header caps and clean the entering chilled water and entering condenser water strainers.

3. If needed, acid back flush the heat exchangers. In severe cases where the chilled water system is contaminated the heat exchangers may need back flushing. Multistack makes available a cleaning kit. Use only chemicals compatible with 316L stainless steel and copper.

4. Check chilled water pumps and hot water pumps.

Check and record amp draw of the pumps and voltage. Check for signs of leakage at pump seal and suction and discharge connections. Inspect all insulation on piping and control sensors. Repair and replace as necessary. Inspect entire plumbing system for leaks and clean any strainers on the system

Other Services as Required

1. Any other manufacturer required annual maintenance services not listed above should be performed.

3. Air Cooled Packaged Chiller (AIRSTACK-MULTISTACK)

ANNUAL PREVENTIVE MAINTENANCE

Review the Airstack Chiller daily log sheet. Perform trending and assess any needed corrective action. Check for program updates. Perform all manufacturer recommended annual maintenance and verification including items not listed below if required.

Visual Inspection

1. Check for any signs of leaks (refrigerant, water).

2. Inspect for corrosion or damage on exterior components.

3. Repair or replace disintegrating insulation.

4. Ensure that all panels are securely fastened.

Airflow & Filters

1. Check condenser and evaporator coils for dirt and debris

2. Wash condenser coils with a downward motion through the coils.

3. Check condenser fan shrouds, mounting and blades.

4. Check fan hub clearance to motor.

5. Ensure all airflow paths are unobstructed.

Electrical Components

1. Inspect all electrical connections for tightness and corrosion.

2. Visually check contactors and relays for damage and evidence of overheating.

3. Check compressor terminals for tightness.

4. Check and record amp draws on compressors, pumps and motors.

5. Test control panels and ensure all indicators and alarms function.

6. Millivolt check:

· Fan contactors

· Compressor contactors

· Circuit breakers

Refrigerant System

1. Analyze refrigerant with tube-type moisture/acid analyzer.

2. Measure and record suction and discharge pressures.

3. Check and record refrigerant subcooling and superheat.

4. Check expansion valve and sensing bulb connections.

5. Inspect expansion valves:

· Check I/O input and modulation of EEV.

· TXV power head and bulb.

6. Leak check the entire chiller.

7. Check compressor oil level.

8. Check crank case heaters to verify proper operation.

9. Check subcooling and superheat readings.

10. Check temperature drop across head exchangers.

11. Check sensor and mechanical safety limits; replace as necessary.

12. Check refrigerant charge/level, add as necessary.

13. Perform qualitative infrared test and record results.

14. Perform vibration analysis.

Water System

1. Inspect water connections and pipes for leaks.

2. Check system flow switch operation.

3. Check and clean strainers and filters in the water circuit.

4. Check the condition of the water treatment system (glycol concentration min 30%).

5. Check glycol level.

6. Check additional Heat exchanger and schedule of three motorized open/close valve.

Lubrication and greasing

1. Lubricate moving parts as specified by the manufacturer.

2. Inspect and clean the oil sight glass and oil level.

3. Grease pumps.

Thermostats and Sensors

1. Test the operation of thermostats and other sensors.

2. Check sensors operation, calibrate sensors if necessary.

System Performance Checks

1. Measure and record system temperatures and pressures.

2. Conduct a load test to ensure the unit operates within specifications.

3. Monitor the compressor's start and run performance.

Safety and Emergency Systems

1. Test safety controls and emergency shutoff systems.

2. Ensure that all safety signage is visible and legible.

Other Services as Required

Any other manufacturer required annual maintenance services not listed above should be performed.