Daikin SUPER MULTI NX CTXS07JVJU Service Manual

Also see for FDXS12DVJU: Operation manual Installation manual Service manual Service manual

Contents

Daikin SUPER MULTI NX CTXS07JVJU Service Manual Manual pdf 7 page image

Safety Considerations SiUS12-928_Bvi1. Safety ConsiderationsRead these SAFETY CONSIDERATIONS carefully beforeperforming any repair work. Comply with these safety symbolswithout fail.Meanings of DANGER, WARNING, CAUTION,and NOTE Symbols:DANGER .............. Indicates an imminently hazardoussituation which, if not avoided, willresult in death or serious injury.WARNING ............ Indicates a potentially hazardoussituation which, if not avoided, couldresult in death or serious injury.CAUTION ............. Indicates a potentially hazardoussituation which, if not avoided, mayresult in minor or moderate injury. Itmay also be used to alert againstunsafe practices.NOTE .................. Indicates situations that may result inequipment or property-damageaccidents only.1.1 Safety Considerationsfor Repair• If refrigerant gas leaks during repair or service, ventilatethe area immediately. Refrigerant gas may produce toxicgas if it comes into contact with flames. Refrigerant gasis heavier than air and replaces oxygen. In the event ofan accident, a massive leak could lead to oxygendepletion, especially in basements, and an asphyxiationhazard could occur leading to serious injury or death.• Do not start or stop the air conditioner operation byplugging or unplugging the power cable plug if a plugis used. Plugging or unplugging the power cable plugto operate the equipment may cause an electricalshock or fire.• Use parts listed in the service parts list andappropriate tools to conduct repair work. The use ofinappropriate parts or tools may cause an electricalshock or fire.• Disconnect power before disassembling theequipment for repairs. Working on the equipment thatis connected to the power supply may cause anelectric shock. If it is necessary to supply power to theequipment to conduct repairs or to inspect thecircuits, do not touch any electrically chargedsections of the equipment.• The step-up capacitor supplies high-voltageelectricity to the electrical components of the outdoorunit. Discharge the capacitor completely beforeconducting repair work. A charged capacitor maycause an electrical shock.• If refrigerant gas is discharged during repair work, donot touch the discharged refrigerant gas. Therefrigerant gas may cause frostbite.• Use only pipes, flare nuts, tools, and other materialsdesigned specifically for R410A refrigerant systems.Never use tools or materials designed for R22refrigerant systems on an R410A refrigerant system.Doing so can cause a serious accident or anequipment failure.• Check to see if the parts and wires are mounted andconnected properly, and if the connections at thesoldered or crimped terminals are secure. Improperinstallation and connections may cause excessiveheat generation, fire, or electrical shock.• Prior to disconnecting the suction or discharge pipefrom the compressor at the welded section,pump-down the refrigerant gas completely in a well-ventilated place first. If there is refrigerant gas or oilremaining inside the compressor, the refrigerant gas oroil can discharge when the pipe is being disconnectedand it may cause an injury.• Wear a safety helmet, gloves, and a safety belt whenworking at an elevated height of more than 6.5 ft (2 m).Insufficient safety measures may cause a fall resulting ininjury.• Do not mix air or gas other than the specifiedrefrigerant R410A to the refrigerant system. If airenters the refrigerant systems, it can cause anexcessive high pressure resulting in equipmentdamage and injury.• When relocating the equipment, check if the newinstallation site has sufficient strength to withstandthe weight of the equipment. If the installation sitedoes not have sufficient strength and the equipmentis not properly secured, the equipment may fall andcause injury.• Securely fasten the outside unit terminal cover(panel). If the terminal cover/panel is not fastenedproperly, dust or water may enter the outside unitcausing fire or electric shock.• When relocating the system, keep the refrigerantcircuit free from substances other than the specifiedrefrigerant (R-410A) such as air. Any presence of air orother foreign substance in the refrigerant circuit cancause an abnormal pressure rise or rupture, resultingin injury.• If refrigerant gas leaks, locate the leaking point andrepair it before charging refrigerant. After chargingrefrigerant, check for refrigerant leaks. If the leakingpoint cannot be located and the repair work must bestopped, perform a pump-down and close the servicevalve to prevent the refrigerant gas from leaking intothe room. The refrigerant gas itself is harmless, but itmay generate toxic gases if it comes into contact withflames.