Safety Considerations
SiUS12-928
vii
1. Safety Considerations
Read these
SAFETY CONSIDERATIONS
carefully before
performing any repair work. Comply with these safety symbols
without fail.Meanings of
DANGER
,
WARNING
,
CAUTION
,
and
NOTE
Symbols:
DANGER
.............. Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
WARNING
............ Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTION
............. Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury. It
may also be used to alert against
unsafe practices.
NOTE
.................. Indicates situations that may result in
equipment or property-damage
accidents only.
1.1
Safety Considerations
for Repair
• If refrigerant gas leaks during repair or service, ventilate
the area immediately. Refrigerant gas may produce toxic
gas if it comes into contact with flames. Refrigerant gas
is heavier than air and replaces oxygen. In the event of
an accident, a massive leak could lead to oxygen
depletion, especially in basements, and an asphyxiation
hazard could occur leading to serious injury or death.
• Do not start or stop the air conditioner operation by
plugging or unplugging the power cable plug if a plug
is used. Plugging or unplugging the power cable plug
to operate the equipment may cause an electrical
shock or fire.
• Use parts listed in the service parts list and
appropriate tools to conduct repair work. The use of
inappropriate parts or tools may cause an electrical
shock or fire.
• Disconnect power before disassembling the
equipment for repairs. Working on the equipment that
is connected to the power supply may cause an
electric shock. If it is necessary to supply power to the
equipment to conduct repairs or to inspect the
circuits, do not touch any electrically charged
sections of the equipment.
• The step-up capacitor supplies high-voltage
electricity to the electrical components of the outdoor
unit. Discharge the capacitor completely before
conducting repair work. A charged capacitor may
cause an electrical shock.
• If refrigerant gas is discharged during repair work, do
not touch the discharged refrigerant gas. The
refrigerant gas may cause frostbite.
• Use only pipes, flare nuts, tools, and other materials
designed specifically for R410A refrigerant systems.
Never use tools or materials designed for R22
refrigerant systems on an R410A refrigerant system.
Doing so can cause a serious accident or an
equipment failure.
• Check to see if the parts and wires are mounted and
connected properly, and if the connections at the
soldered or crimped terminals are secure. Improper
installation and connections may cause excessive
heat generation, fire, or electrical shock.
• Prior to disconnecting the suction or discharge pipe
from the compressor at the welded section,
pump-down the refrigerant gas completely in a well-
ventilated place first. If there is refrigerant gas or oil
remaining inside the compressor, the refrigerant gas or
oil can discharge when the pipe is being disconnected
and it may cause an injury.
• Wear a safety helmet, gloves, and a safety belt when
working at an elevated height of more than 6.5 ft (2 m).
Insufficient safety measures may cause a fall resulting in
injury.
• Do not mix air or gas other than the specified
refrigerant R410A to the refrigerant system. If air
enters the refrigerant systems, it can cause an
excessive high pressure resulting in equipment
damage and injury.
• When relocating the equipment, check if the new
installation site has sufficient strength to withstand
the weight of the equipment. If the installation site
does not have sufficient strength and the equipment
is not properly secured, the equipment may fall and
cause injury.
• Securely fasten the outside unit terminal cover
(panel). If the terminal cover/panel is not fastened
properly, dust or water may enter the outside unit
causing fire or electric shock.
• When relocating the system, keep the refrigerant
circuit free from substances other than the specified
refrigerant (R-410A) such as air. Any presence of air or
other foreign substance in the refrigerant circuit can
cause an abnormal pressure rise or rupture, resulting
in injury.
• If refrigerant gas leaks, locate the leaking point and
repair it before charging refrigerant. After charging
refrigerant, check for refrigerant leaks. If the leaking
point cannot be located and the repair work must be
stopped, perform a pump-down and close the service
valve to prevent the refrigerant gas from leaking into
the room. The refrigerant gas itself is harmless, but it
may generate toxic gases if it comes into contact with
flames.
• Do not repair the electrical components with wet
hands. Working on the equipment with wet hands may
cause an electrical shock.
Summary of Contents for SUPER MULTI NX G Series
Page 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Page 7: ...SiUS12 928_A Table of Contents vi...
Page 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Page 11: ...SiUS12 928_A List of Functions 2...
Page 17: ...SiUS12 928_A Specifications 8...
Page 23: ...SiUS12 928_A Specifications Specifications 14...
Page 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Page 37: ...SiUS12 928_A Function and Control 28...
Page 69: ...SiUS12 928_A Control Specification Function and Control 60...
Page 71: ...SiUS12 928_A Operation Manual 62...
Page 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Page 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Page 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Page 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Page 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Page 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Page 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Page 99: ...SiUS12 928_A Service Diagnosis 90...
Page 169: ...SiUS12 928_A Removal Procedure 160...
Page 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Page 235: ...SiUS12 928_A Appendix 226...