Attachment 11_TE11 Specific Tasks.pdf

Technical Exhibit (TE) - 11

SPECIFIC TASKS & INFORMATION

5.1 SPECIFIC TASKS.

5.1.1 Basic Services. The Contractor shall maintain the heating and ventilation systems thru a Preventive Maintenance program to ensure reliable heating during the heating season. The Contractor shall provide services for heating and ventilation repair. The various systems encountered will each have their own unique requirements. The manufacturer’s maintenance guidelines are to be adhered to when accomplishing Preventive Maintenance and Inspections.

5.1.1.1 Period of Performance (PoP). The PoP shall be for one (1) month phase- in period + eleven

(11) months of Base Year and two (2) Years option periods as follows.

Phase in Period 1 September 2024 - 30 September 2024 Base Year Period 1 October 2024 - 31 August 2025 1st Option Period 1 September 2025 - 31 August 2026 2nd Option Period 1 September 2026 - 31 August 2027

5.1.1.2 Routine Calls. Service Calls that do not meet the requirement in paragraph 2.1.3.2. will be classified as routine calls. The Contractor shall respond, begin work on routine service calls within 24 hours after receipt of the call and complete all repairs within 7 calendar days. Routine service call work will normally be performed during the government’s regular working hours.

5.1.1.3 Emergency Calls. Service calls will be classified as an emergency when system failures constitute a danger to personnel, threaten to damage property, or threaten to disrupt activity operations or mission. Examples include loss of heating service in areas with no concentrated heat producing equipment. The Contractor shall respond within 2 hours and work until the emergency condition is fixed. Once contractor eliminates the emergency condition additional repairs shall be completed within 5 days. The maximum numbers of emergency-call are 1 through 5 calls per month, reference a TE-09 Historical data of on-call service list.

5.1.1.4 Performance. All work shall be accomplished in conformance with approved and accepted standards of the industry; equipment manufacturers; all applicable local, and federal standards; and all applicable building and safety. When the Contractor completes work on a system, that system shall be free of missing components or defects which would prevent it from functioning as originally intended and/or designed. Corrective or repair/replacement work shall be carried to completion including operational checks and cleanup of the job site. Except where otherwise noted, replacements shall match existing in dimensions, finish, color, and design. The Contractor shall schedule and arrange work to cause the least interference with normal operations and mission. In those cases where some interference may be essentially unavoidable, the Contractor shall make every effort to minimize the impact of the interference, inconvenience, equipment downtime, interrupted service, and customer discomfort

5.1.2 Preventive Maintenance (PM) and Repair of Heating Systems (CLIN X001). Heating systems include, but are not limited to, boilers, furnaces, infrared heaters, natural gas and oil-fired unit heaters, and steam and hydronic heating systems. Some heating systems are run seasonally, and the COR will direct seasonal turn on and off. Heating system controls shall be set IAW Army Regulation 420-1 paragraph 22-12 b. When a heating system is inoperable, and the outside air temperature is 32 degrees F or below, freeze protection shall be provided. When a heating system in an occupied facility is inoperable beyond working hours, the Contractor shall notify the COR and provide a COR-approved temporary heating source when requested by the COR. Temporary heating source shall heat the facility to the temperature required as designated IAW Army Regulation 420-1.

a. The Contractor shall identify heating and boiler equipment, which are candidates for improving energy conservation, and make recommendations for upgrading or replacing the equipment. The recommendations shall identify those, which are estimated to save the most energy. Recommendations, with detailed estimates, shall be submitted annually to the COR.

b. Repair Parts of PM. The contractor shall perform repair and replacement service for major and minor parts of heating, ventilation systems. The Contractor shall be responsible for all minor parts less than $250 as a part of preventive maintenance and regular inspection work. Referenced historical data for minor parts repair/replacement is in the Attachment 5 but are not limited to all kinds of minor parts.

5.1.2.1 Boilers. The Contractor shall install, remove, repair, replace, maintain, and operate low pressure steam, low temperature hot water boilers and components including, but not limited to, natural gas systems downstream of the meter owned by the utility provider; fuel oil systems including storage tank; electrical systems; controls and safety devices; burners; heat exchanger and venting assemblies;

and the steam or water side of boilers including, but not limited to, tubes, piping, circulating pumps, automatic blow down valves, on-site and remote electronic monitoring devices, gauges, relief valves, and low water cut-offs IAW ASME Boiler and Pressure Vessel Code Sections IV, V, VI, VIII, and Controls and Safety Devices (CSD)-1; NFPA 31 Standard for Installation of Oil Burning Equipment; NFPA 54 National Fuel Gas Code; NFPA 58 Liquefied Petroleum Gas Code; NFPA 211 Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances; AR 420-1 Chapter 23 Utility Services; TM 5-642 Operation and Maintenance Small Heating Systems; Standard Operating Procedures for Low Pressure Boilers; and manufacturer’s specifications. Set space temperature to the specifications of AR 420-1 Section VI Energy Program.

5.1.2.2 Operate boilers at the temperature and pressure standards set for the individual type of heating system. Maintain steam boiler water chemistry IAW ASME Boiler and Pressure Vessel Code Section VI paragraph 9, and TM5-650 Repairs and Utilities. Central Boiler Plants Appendix B, Boiler Water Chemistry. Maintain combustion exhaust emissions IAW PSCAA Regulations I, II, and III, and specific NOCs. Attachment 6 is the minimum requirements for steam boilers and Attachment 6 for hot water boilers Preventive Maintenance checks. Perform welding tasks IAW ASME Boiler and Pressure Vessel Code Section IX. Complete and maintain records including, but not limited to, boiler and water chemistry logs as shown in Attachment 6.

5.1.2.3 Annual boiler maintenance shall be performed during non-heating season months typically May-Sept each year. Water or steam shall not leak from boilers or associated piping. Fuel oil and natural gas shall not leak from the system or components. Low water cut-offs, automatic feed water devices, relief valves, and other boiler safety devices shall be fully operational at all times. Boiler and water chemistry logs shall be complete and missing data explained in the remarks section. Boiler temperatures and pressures shall be within the parameters set on the controls of each individual boiler for the individual application. Steam boiler water chemistry shall be maintained within set parameters. Burner combustion exhaust emissions shall not exceed 50 ppm of carbon monoxide when burning natural gas, or a No. 1 (20% density) smoke on the Ringelmann Chart.

5.1.2.4 A licensed independent agency (Korea Energy Management Company or approved equal) shall annually inspect 5% of the gas and oil boilers without additional cost to Government. Contractor shall accompany the annual boiler inspector (independent agency hired by the Contractor) on test of equipment and evaluate each inspected boiler to improve efficiency. The Contractor shall present a written report of inspection to the COR 3days after receipt of report from independent agency. The Contract shall maintain the record of annual 5% inspection of the gas and oil boilers and the record shall include type of heating system, location, the inspection result and date.

5.1.2.5 Warm Air Furnaces. The Contractor shall install, remove, repair, replace, maintain, and operate furnaces and components including, but not limited to, natural gas systems downstream of the meter owned by the utility provider, fuel oil systems, controls, safety devices, burners, heat exchanger and exhaust gas venting systems, and air handling components IAW NFPA 31, NFPA 54, NFPA 58, NFPA 211, AR 420-1 Chapter 23,TM 5-642, and manufacturer’s specifications. Attachment 6 is the minimum requirements for Warm Air Furnaces Preventive Maintenance checks. Set space temperature to the specifications of AR 420-1 Section VI Energy Program. Fuel oil or natural gas shall not leak from systems or components. Furnaces shall heat the space to the specific temperature requirement of the facility in which they are located. Burner combustion exhaust emissions shall not exceed 50 ppm of carbon monoxide when burning natural gas, or a No. 1 (20% density) smoke on the Ringelmann Chart.

5.1.2.6 Hydronic Heating Systems. The Contractor shall. Fabricate, install, remove, repair, replace, maintain, and operate steam and hydronic heating systems and components including, but not limited to, piping, fittings, mechanical connections, air vents, balancing valves, gauges, thermometers, pressure regulators, steam traps, hand valves, relief valves, control valves, and regulators, radiators and their covers, hot water convectors and their covers, radiator control valves, condensate return tanks and pumps, heat exchangers, expansion tanks, steam or hot water unit heaters, fans, motors, dampers, controls, air handler coils, thermostatic operators, thermostats, circulating pumps, air separators, insulation, hangers, and supports IAW AR 420-1 Chapter 23, TM 5-642, and manufacturer’s specifications. Attachment 6 is the minimum requirements for Hydronic Heating Systems Preventive Maintenance checks.

5.1.2.7 Steam or water shall not visibly leak from the portions of the system located inside the facility.

Water or steam leakage from packings and seals of valves and pumps inside the mechanical room shall pose no risk of triggering the fire alarm system and shall not have a detrimental effect on components or system operation. Mechanical seals that are designed to permit leakage for lubrication shall do so IAW manufacturer’s instructions. Mechanical connections such as flanges and unions shall not leak steam or water. Radiator, fan coil, unit heater, and fin tube convector temperature control valves shall moderate room temperature. Thermostats shall operate to control room temperature. Fans shall operate on demand from the control system. Dampers shall operate on demand from the control system. Steam and water pressures shall be set for the particular application. Steam or hydronic heating systems shall heat the space to the temperature requirement of the facility in which they are located.

5.1.2.8 Fan Coil Units (FCU). The Contractor shall operate, install, remove, replace, repair, and maintain fan coil units. The Contractor shall provide a schedule of work for cleaning and replacement of air filter to the COR in one (1) month advance. The Contractor shall replace air filters of all fan coil units installed in all office buildings in Yongsan quarterly. Perform maintenance cycles IAW Attachment 6 which is the minimum requirements for Air Handler Preventive Maintenance checks.

5.1.2.9 Mechanical Rooms. The Contractor shall always ensure that the boiler room is clean, free of items foreign to the operation of the boiler plants.

5.1.2.10 Aboveground Fuel Oil Tanks. The Contractor shall perform a monthly visual inspection on all above ground fuel tanks that supply fuel for heating systems in this contract according to Attachment 6 Inspection Checklist for Aboveground Storage Tank. (AST) and Containment Dike. Reports shall be submitted to COR the 5th day of each month monthly.

5.1.3 Preventive Maintenance of HVAC & Heat Pumps (CLIN X002). (Firm Fixed Portion). The Contractor shall operate, install, remove, replace, repair, fabricate, and maintain heat pump systems and components including, but not limited to, motors, compressors, controls, heat strips, hardware, electrical components, mounting hardware, thermostats, condensers, evaporators, piping, fittings, supply and exhaust fans, heat exchanger, and valves IAW NFPA 90A, NFPA 90B, AR 420-1, and manufacturer’s specifications. Attachment 6 is the minimum requirements for Heat Pumps Preventive Maintenance checks. Set space temperature to the specifications of AR 420-1.

a. Heat pumps shall cool or heat the space to the temperature requirement of the facility in which they are located. Refrigerant shall not leak. Refrigerant shall not be purposely vented to the atmosphere during repair operations. Handle, recover, reclaim, and recycle refrigerant IAW 40 CFR 82.161.

b. The contractor shall perform inspections and preventive maintenance during spring and autumn season (Apr thru Jun and Sep thru Nov) listed in the Attachment 4.

The following components will be included for the minimum Preventive Maintenance checks, supply and exhaust fans, heat pump unit including ground source geothermal, pumps (hot and cooling water and booster), unit heater and Water heater, air to air heat exchanger, and heating water coil.

5.1.3.1 Control System. The contractor shall maintain automatic control software on heat pump systems, to include backups/restores, proper settings and firmware updates/reinstallation in the event that system restore actions are required. System restore actions shall be completed within 24 hours of request.

5.1.3.2 Chillers. The Contractor shall operate, install, remove, replace, repair, fabricate, and maintain chillers, associated systems, and components including, but not limited to, motors, compressors, controls, thermostats, hardware, electrical components, condensers, piping, pumps, insulation, evaporators, dryers, tubing, fittings, valves, air cleaners, filters, strainers, and switches IAW AR 420-1 Section III, Rev C AR 420-1 Chapter 23, Rev C and manufacturer’s specifications. Perform maintenance cycles IAW Attachment 6. Handle, recover, reclaim, and recycle refrigerant IAW 40 CFR 82.161. Attachment 6 is the minimum requirements for Air Handler Preventive Maintenance checks. Chillers shall cool the water to the temperature requirement of the facility in which they are located. Refrigerant shall not leak.

Refrigerant shall not be purposely vented to the atmosphere during repair operations. Water chemistry shall be as shown in Attachment 6.

5.1.3.3 Cooling Towers. The Contractor shall operate, install, remove, replace, repair, fabricate, and maintain cooling towers, associated systems, and components including, but not limited to, cooling towers, pumps, motors, controls, piping, valves, and fans IAW AR 420-1 Section III, AR 420-1 Section VII, Rev C and manufacturer’s specifications. Perform maintenance cycles IAW Attachment 6 which is the minimum requirements for Air Handler Preventive Maintenance checks. Cooling towers shall cool water to the temperature requirement of the associated chiller that they support. Water chemistry shall be IAW TE-05-128. Water level control systems shall maintain the water level required to feed the cooling tower. Pumps and piping systems shall not leak water. Mechanical seals that are designed to permit leakage for lubrication shall do so IAW manufacturer’s instructions.

5.1.4 Preventive Maintenance for Heating System (CLIN X001) and Heat Pumps (CLIN X002) (Firm Fixed Portion).

5.1.4.1 Air Handling Unit. The Contractor shall operate, install, remove, replace, repair, and maintain air handlers and components including, but not limited to, coils, motors, fans, controls, dampers, actuators, thermostats, ducting, variable air volume boxes, mounting hardware, filters, electronics, and electronic components IAW NFPA 90A, NFPA 90B, AR 420-1, and manufacturer’s specifications.

Perform maintenance cycles IAW Attachment 6. Set space temperature to the specifications of AR 420-

1. Attachment 6 is the minimum requirements for Air Handling Unit Preventive Maintenance checks. Set space temperature to the specifications of AR 420-1 Section VI Energy Program. The equipment is listed in Attachments 1 and 2. Air handlers and dampers shall operate on demand to circulate air throughout the facility. Air handlers shall maintain space temperature to the specifications of AR 420-1.

5.1.4.2 Maintenance. Equipment shall be shut down for the minimum time necessary to complete preventive maintenance. Where two (2) or more boilers, heaters, heat exchangers, are operated in parallel, only one (1) of the two (2) shall be shut down at a time so that partial service can be maintained.

5.1.4.2.1 Any major repair and replacement requirements identified during preventive maintenance services shall be recorded on Facilities Engineering Work Request (FEWR) jointly prepared by the COR and the Contractor. Those requirements will be completed under requirements portion of the contract.

5.1.4.2.2 Major removable components of heating equipment deactivated for the non- heating season which are to be repaired in the Contractor's shop and/or are to be stored for safe keeping are included herein. Removal of equipment shall commence at the end of the heating season as set by the Garrison Commander, no later than 16 May. Reinstallation is to be completed no later than 15 September. Major removable components of heating equipment include, but is not limited to, oil burners, burner motors, blower, motors, and circulating pumps. Equipment components removed for service and/or safe storage shall be identified by a tag upon which the following shall be recorded: identification of components, and identification of equipment from which it was removed. After completion of repairs, equipment to be stored in place shall be reinstalled. Equipment to be secured for the season shall be stored by the Government.

Equipment not economically repairable will be reported to the COR, and upon his instructions will be turned in to the Government for disposal. Between 1 and 15 September, equipment turned in to the Government for storage and replacements for equipment turned in for disposal will be obtained from the Government (DPW Supply and Storage Division) and installed. The COR will instruct the Contractor as to what equipment will be turned in for safe storage, and what equipment shall be stored in place. The Contractor and the COR shall conduct a joint inventory of all boilers, furnaces, heaters, and other mechanical rooms during the period 16 through 30 September of each year. Reports of survey shall be submitted by the Contractor for all missing or damaged installed property. The COR will not approve the final month's invoice until pecuniary liability for any missing or damaged property has been determined.

5.1.4.2.3 Filters, Refrigerant and Anti-Freeze required in entire systems. The contractor shall replace all filters and make up refrigerants and anti-freeze regularly for adequate system operations to meet manufacture specification. The cost of replacing filters and making up refrigerants/antifreeze shall be charged by Firm-Fixed-Price- Portion of the contract. See Attachment 6.

5.1.4.2.4 Upon designation by any buildings schedule for demolition/renovation as a part of Yongsan Relocation Program, unit cost will be adjusted appropriately with issuing modification to the contract based on the ratio of SF. Variance in actual increase or decrease within 1% is permitted. Such percentage shall not cause an equitable adjustment in the contract price either for the Government or the Contractor.

5.1.5 Contractor shall provide the labor. for repair and replace of major equipment not specified in the CLIN X004. Yearly historical man hour data is shown below.

Plumber 320 hours Electrician 160 hours Heating/AC Mechanic 960 hours Mechanical/HVAC Engineer 480 hours Common Labor 480 hours

5.1.5.1 On-Call Repair Service (CLIN X003). (Requirements Portion). The Contractor shall organize and manage overall operations of Work Control Center in order to execute on-call repair services during heating and non-heating seasons 24 hours and 7 days a week. The Contractor shall plan on two types of responses, emergency, and routine. An emergency would be no heat in a facility where people reside or a dining facility, all other responses shall be routine. An emergency response shall be within 2 hours and work until emergency is eliminated. A routine response shall be within 24 hours with repairs complete within 7 calendar days.

5.1.5.2 Contractor shall receive all service calls (work orders) from the Business Operation & Integration (BO&I) Division Service Order Center during duty hours 0700- 1630, and Fire Dispatch office after duty hours, weekends, and holidays. The Contractor shall not respond to direct calls from customers.

The work order will be in the form of Service Order or Facilities Engineering Work Request (FEWR).

5.1.5.3 Records of Service Calls. The Contractor’s employee shall log and maintain all incoming trouble calls daily in English and be capable of conversing with customers in the English and Korean languages. The Contractor shall provide and maintain an automated work control system for record-keeping and tracking purposes from the receipt to the completion of work request. All service call work shall be compiled and electronic copies (File Format. Adobe Acrobat pdf format) with summary data sheet (File Format. Microsoft Excel File) provided to the COR on a weekly basis. Reports shall contain at a minimum.

- Facility number of service call.

- Time received and responded to service call.

- Defects corrected with list of materials used.

- Labor hours.

5.1.5.4 The Contractor’s employee shall contact the COR immediately if they are not able to perform on-call repair services or understand technical problems resulting from recurring service calls, nature, or effect of the trouble. If the Contractor is not able to respond to emergency repair calls, the Contractor shall relay all pertinent information to COR or DPW Fire Station for resolution. The Contractor shall record the cause of delay for a timely response to emergency on-call repair service request in the remarks section on Service Orders issued by DPW (i.e., lack of material from shop stock the Contractor is to maintain or lack of transportation).

5.1.5.5 Prior to 8.00 a.m. each workday, the Contractor shall provide information to the COR on all emergency trouble calls in an electronic copy (File Format. Adobe Acrobat pdf format). This report will be generated in English and will include as a minimum for each completed trouble call the Contractor’s work control number, the time of receipt, identification of the call origin, the required and actual completion time, a short description of work actually completed (if different from the original location), the number of labor hours used, labor costs, a brief description of material and parts used, including quantities, material cost, and total cost. Completed work authorizations shall be signed by the Contractor, certifying the work was satisfactorily performed.

5.1.5.6 The Contractor shall maintain individual files on each Service Order issued during the contract period and make these files available for COR review. All forms used to maintain Service Orders shall accurately show the actual start and completion dates, total labor hours expended, and cost of equipment and materials utilized.

5.1.5.7 Assignment of Priority. The Contractor shall establish a numbering system and work priority assignment systems with the assignment of COR for approval. The Contractor shall assign a priority to each trouble call using the following criteria.

a. First order of priority when system failures constitute a danger to personnel, threaten to damage property, or threaten to disrupt activity operations or mission. The contractor shall respond immediately and must be on the job site and working within two

(2) hour after receipt of an emergency trouble call.

b. Second order of priority will be classified as routine when the work does not qualify as an emergency or urgent call (i.e., reduced system capability). The Contractor shall respond, begin work on routine service calls within 24 hours after receipt of the call, and complete all repairs within 7 calendar days.

5.1.6 Systems Inventory and Assessment Validation. During the first six (6) months from contract award, the Contractor shall conduct a building-by-building heating and domestic hot water, boiler, for condition assessment., The Contractor shall prepare a systems inventory and assessment report in a word processor format acceptable to the Government and shall furnish one (1) electronic copy (File Format. Microsoft Excel) to the COR within fifteen (15) working days of completion of the systems inventory and validation. The Contractor shall clearly identify all additions, changes, and deletions to the inventory, and any recommendations for improving the inventory. The report shall include the location (building number) of the equipment, manufacturer, date installed (if known), estimated remaining life, and a description of condition (including any recommendations for repairs).

5.1.6.1 Changes to Systems Inventory. The Contractor shall maintain supporting inventory information for all equipment and systems. Information shall include, but is not limited to, location, manufacturer, make, model, serial number, and size. For new equipment items installed, supporting inventory data will include the date installed. The Contractor shall also delete from the inventory equipment that is removed or demolished. The Contractor shall provide to the COR, semi-annual base, an updated electronic copy (File Format. Microsoft Excel) of the systems inventory and assessment report.

5.1.7 Installation & Removal Services (CLIN X004). (Requirements Portion). The Contractor shall replace and repair for major equipment provided by Government as needed basis.

5.1.9.5 The Contractor shall dispose of all removed debris to a designated area or waste disposal plant permitted by the ROK Government in accordance with Korean laws and regulation.

5.1.7.1 Any installation and removal of heating and heat pump system components shall be performed under requirements portion of the contract. The Contractor shall be responsible for furnishing the labor (ELIN X004), tools and required parts (ELIN X005) except heavy equipment (GFM). The Contractor shall submit material and labor proposals to the COR once the requirements are identified.

The COR or alternate will verify the Contractor’s proposed work and quantity of materials for accuracy and adequacy before the Contractor’s proposal is submitted to the Contracting Officer for issuance of a Delivery Order to perform such task. Any excess and used materials, parts, components, or equipment resulting from replacement of heating and ventilation systems shall be turned into the COR or its designated representative.

5.1.8 Repair Parts/Materials (CLIN X005). (Requirements Portion). The Contractor shall provide materials for repair and replace major parts identified in Attachment 8 to perform this contract, except Government furnished materials. Each delivery order will be issued as needed basis through the COR’s request/verification and approved by Contracting Officer. Major Parts Repair/Replacement service shall be used under the identified ELIN X001 thru ELIN X356. Parts required to conduct repair maintenance shall not exceed specified amount in the each CLIN X005 per each year. The contractor shall record and maintain the manufacturer’s product warranty.

5.1.9 HVAC Duct/Exhaust Fan Duct Cleaning Service (CLIN X006). (Requirements Portion). The Contractor shall perform the following requirement.

5.1.9.1 Remove oiled dust and oiled soot through proper chemical cleaning detergent. Cleaning detergent shall be non-flammable and non-hazardous.

5.1.9.2 Clean all dust and soot inside of all air duct system. Air handling unit must be cleaned at the same time.

5.1.9.3 Remove, readjust air resisters, diffusers, split dampers, and all equipment to original setting after duct cleaning.

5.1.9.4 The Contractor shall be responsible for all accidents and damages to Government properties during contract period. All furniture, desks, chairs, shelves, and exposed things shall be covered by vinyl sheet to protect from dust and soot.

5.1.10 The Contractor shall perform the following services as required:

5.1.10.1 Other openings shall be created where needed and they must be created so they can be sealed in accordance with industry codes and standards.

5.1.10.2 Closures must not significantly hinder, restrict, or alter the airflow within the system.

5.1.10.3 Closures must be properly insulated to prevent heat loss/gain or condensation on surfaces within the system.

5.1.10.4 Openings must not compromise the structural integrity of the system.

5.1.10.5 Construction techniques used in the creation of openings shall conform to requirements of applicable building and fire codes, and applicable National Fire Protection Association standards.

5.1.10.6 Cutting service openings into flexible duct is not permitted. Flexible duct shall be disconnected at the ends as needed for proper cleaning and inspection.

5.1.10.7 All service openings capable of being re-opened for future inspection or remediation shall be clearly marked and shall have their location identified to the COR in a written report.

5.1.10.8 Ceiling sections (tile). The Contractor shall remove and reinstall ceiling sections to gain access to HVAC systems during the cleaning process.

5.1.10.9 Air distribution devices (registers, grilles, and diffusers). The Contractor shall clean all air distribution devices.

5.1.10.10 Air handling units, terminal units (Variable Air Volume (VAV), Dual duct boxes, etc.), blowers and exhaust fans. The Contractor shall ensure that supply, return, and exhaust fans and blowers are thoroughly cleaned. Areas to be cleaned include blowers, fan housings, plenums (except ceiling supply and return plenums), scrolls, blades, or vanes, shafts, baffles, dampers, and drive assemblies. All visible surface contamination deposits shall be removed in accordance with Korean standards. The Contractor shall.

5.1.10.11 Clean all air handling units (AHU) internal surfaces, components and condensate collectors and drains.

5.1.10.12 Assure that a suitable operative drainage system is in place prior to beginning wash down procedures.

5.1.10.13 Clean all coils and related components, including evaporator fins.

5.1.10.14 Duct Systems. The Contractor shall.

5.1.10.15 Create service openings in the system as necessary in order to accommodate cleaning of otherwise inaccessible areas.

5.1.10.16 Mechanically clean all duct systems to remove all visible contaminants.