Tm-9-4120-371-14
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TM 9-4120-371–14 TECHNICAL MANUAL INTRODUCTION 1 OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE OPERATING INSTRUCTIONS 2 MANUAL OPERATOR’S MAINTENANCE INSTRUCTIONS 3 MAINTENANCE INSTRUCTIONS: 4 DIRECT SUPPORT 5 MAINTENANCE INSTRUCTIONS GENERAL SUPPORT MAINTENANCE INSTRUCTIONS 6 REFERENCES A MAINTENANCE ALLOCATION CHART B COMPONENTS OF END ITEM AND BASIC ISSUE ITEMS LISTS C AIR CONDITIONER, VERTICAL, COMPACT, 18,000 BTU/HR ADDITIONAL 208 VOLT, 3 PHASE, 50/60 HERTZ AUTHORIZATION LIST D KECO MODEL F18T-2S (4120-01-114-2471) EXPENDABLE SUPPLIES KECO MODEL F18T-2SA AND MATERIALS LIST E (4120-01-329-1515) A.R.E. MODEL CVP-20-5/6-08 INDEX I (4120-01-216-1151) Approved for public release; distribution is unlimited. l This manual supersedes TM 5-4120-371 -14, 4 June 1982. HEADQUARTERS, DEPARTMENT OF THE ARMY 30 SEPTEMBER 1991 TM 9-4120-371-14 C1 CHANGE HEADQUARTERS DEPARTMENT OF THE ARMY NO. 1 WASHINGTON, D. C., 1 JULY 1992 Operator’s, Unit, Direct Support and General Support Maintenance Manual AIR CONDITIONER, VERTICAL, COMPACT, 18,000BTU/HR 208 VOLT, 3 PHASE, 50/60 HERTZ KECO MODEL F18T-2S, NSN 4120-01-114-2471 KECO MODEL F18T-2SA, NSN 4120-01-329-1515 A.R.E. MODEL CVP-20-5/6-08, NSN 4120-01-216-1151 Approved for public release; Distribution is unlimited TM 5-4120-371–14, 30 September 1991 is changed as follows: 1. Remove and insert pages as indicated below. New or changed text material is indicated by a vertical bar in the margin. An illustration change is indicated by a miniature pointing hand. Remove pages Insert pages 5-1 and 5-2 5-1 and 5-2 5-7 through 5-10 5-7 through 5–10 5-15 and 5-16 5-15 and 5-16 B-5 through B-8 B-5 through B-6 2. Retain this sheet in front of manual for reference purposes. By Order of the Secretary of the Army: GORDON R. SULLIVAN General, United States Army Official: Chief of Staff MILTON H. HAMILTON Administrative Assistant to the Secretary of the Army 01669 DISTRIBUTION: To be distributed in accordance with DA Form 12–25E, (qty rqr block no. 0142). TM 9-4120-371-14 or glasses to protect eyes. Wear rubber gloves to protect hands. Use care to avoid spilling Acetone and methyl-ethyl ketone compressor burn out sludge. If (MEK) are flammable, and their sludge is spilled, clean area HIGH VOLTAGE vapors can be explosive. Repeated thoroughly. or prolonged skin contact or is used in the operation of this inhalation of vapors can be toxic. equipment Use a well-ventilated area, and DEATH ON CONTACT may keep away from sparks or flame. result if personnel fail to observe Use goggles, gloves, and apron Clean parts in a well ventilated safety precautions. when appropriate. area. Never work on electrical equipment Avoid inhalation of solvent fumes unless there is another per son and prolonged exposure of skin to nearby who is familiar with the cleaning solvent. Wash exposed operation and hazards of the skin thoroughly. Do not use steam to clean coil. equipment and who is competent Dry cleaning solvent (Fed. Spec. in administering first aid. When the P-D–680) used to clean parts is technician is aided by operators, potentially dangerous to personnel he must warn them about and property. dangerous areas. Do not use steam, open flame, Do not use near open flame or Whenever possible, the input heat gun, or any other high– excessive heat. Flash point of power supply to the equipment temperature heat source to thaw must be shut off before beginning solvent is 100°F to 138°F (38°C to an iced coil. Thaw an iced coil by work on the equipment. Take 59°c). operating unit in high heat mode, particular care to ground every with a lamp bulb (75 watt Wear eye protection when blowing capacitor likely to hold a maximum), hair dryer, electric fan, solvent from parts. Air pressure dangerous potential. When working or by leaving the unit shut down should not exceed 30 psig (2.1 inside the equipment, after the until ice melts. kg/cm2). power has been turned off, always ground every part before touching Assure the industrial process has it. been evaluated by the Medical Service Bioenvironmental Be careful not to contact high- Engineer. voltage connections of 208 volts ac Compressed air used for cleaning input when installing or operating purposes will not exceed 30 psi Waste treatment/disposal must be this equipment. (2.1 kg/cm2). Do not direct approved by the Medical Service compressed air against the skin. Bioenvironmental Engineer and Whenever the nature of the Use goggles or full face shield. Civil Engineer. operation permits, keep one hand away from the equipment to reduce the hazard of current flowing through vital organs of the body. Avoid inhaling fumes and burns Solutions will be disposed of in Warning: Do not be misled by from any acid formed by burn out accordance with local State Water the term “low voltage.” of oil and refrigerant. Wear gas Pollution Control Laws. Consult Potentials as low as 50 volts mask if area is not thoroughly local Medical Services for may cause death under adverse ventilated. Wear protective goggles guidance. conditions. a TM 9-4120-371-14 When possible, disconnect input The burning of polyurethane foams a face shield or goggles when power to the air conditioner before is dangerous. working in any situation where performing any maintenance to the Due to the chemical composition of refrigerant contact with the skin or electrical system. Voltages used a polyurethane foam, toxic fumes eyes is possible. can be deadly. Shutting the unit off are released when it is burned or Application of excessive heat to at the control panel does not heated. disconnect power to the various any component in a charged If it is burned or heated indoors, components of the air conditioner. system will cause extreme such as during a welding operation pressure that may result in a nearby, you should take care to rupture, possibly explosive in ventilate the area thoroughly. An nature. Exposure of Refrigerant 22 exhaust system like that of a paint to an open flame or a very hot spray booth should be used. surface will cause a chemical Allow heaters to cool before reaction in the gas to form carbonyl touching. Severe burns can result Air-supplied respirators, approved from touching hot heaters. by the National Institute for chloride (phosgene), a highly Occupational Safety and Health poisonous and corrosive gas. In its Administration or the United States natural state, refrigerant 22 is a Bureau of Mines, should be used colorless odorless vapor with no for all welding in confined spaces toxic characteristics. It is heavier Do not allow anyone under and in places where ventilation is than air and in a well ventilated area will disperse rapidly. equipment suspended from a lifting inadequate. Persons who have However, in an unventilated area it device. chronic or recurrent respiratory conditions, including allergies and presents danger as a suffocant. Do not allow the unit to swing while asthma, should not work in these suspended from a lifting device. areas. Failure to observe this warning may result in injury to personnel and damage to the equipment. Be sure the refrigeration system is DANGEROUS CHEMICAL fully discharged and purged and (Refrigerant 22) is used in this that dry nitrogen is flowing through equipment the system at the rate of less than 1 – 2 cfm (0.028 – 0.057 DEATH or serious injury may DO NOT LIFT without holding unit m3/minute) before all brazing or result if personnel fail to observe in upright position. Otherwise, unit debrazing operations. will fall over. proper safety precautions. Great care must be exercised to prevent contact of liquid refrigerant, or refrigerant gas discharged under pressure, with any part of the body. · The covers, grilles, and screens The extremely low temperature installed on this unit are there for a resulting from the rapid expansion purpose. of liquid refrigerant, or refrigerant gas released under pressure, can · Do not operate this unit with cause sudden and irreversible them off or open unless the tissue damage through freezing. instructions tell you to. When this is As a minimum, all personnel must necessary, do so with care. wear thermal protective gloves and b *TM 9-4120-371-14 TECHNICAL MANUAL HEADQUARTERS DEPARTMENT OF THE ARMY TM 9-4120-371-14 WASHINGTON, D.C. 30 SEPTEMBER 1991 OPERATOR’S, UNIT DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AIR CONDITIONER, VERTICAL, COMPACT, 18,000 BTU/HR, 208-VOLT, 3 PHASE, 50/60 HERTZ KECO MODELS F18T-2S NSN 4120-01-114-2471 AND F18T-2SA NSN 4120-01-329-1515, AND A.R.E. MODEL CVP-20-5/6-08 NSN 4120-01-216-1151 Approved for public release; distribution is unlimited. REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of away to improve the procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 located in the back of this manual directly to: US Army Troop Support Command, ATTN: AMSTR-MMTS, 4300 Goodfellow Blvd., St. Louis, MO 63120-1798. A reply will be furnished to you. TABLE OF CONTENTS CHAPTER 1 INTRODUCTION . 1-1 Section I General Information . .1-1 Section II Equipment Description . .1-2 Section Ill Technical Principles of Operation . .1-6 CHAPTER 2 OPERATING INSTRUCTIONS . .2-1 Section I Description and Use of Operator’s Controls and Indicators .