5
Safety Precautions
Precautions for Handling Units for Use with R410A
Do not use the existing refrigerant piping
The old refrigerant and refrigerator oil in the existing piping
contain a large amount of chlorine, which will cause the
refrigerator oil in the new unit to deteriorate.
R410A is a high-pressure refrigerant, and the use of the
existing piping may result in bursting.
Keep the inner and outer surfaces of the pipes clean and
free of contaminants such as sulfur, oxides, dust/dirt shaving
particles,oils,and moisture.
Contaminants inside the refrigerant piping will cause the
refrigerant oil to deteriorate.
Use a vacuum pump with a reverse-flow check valve.
If other types of valves are used, the vacuum pump oil will
flow back into the refrigerant cycle and cause the refrigerator
oil to deteriorate.
Do not use the following tools that have been used with the
conventional refrigerants. Prepare tools that are for exclusive
use with R410A.
(Gauge manifold, charging hose, gas leak detector,
reverse-flow check valve, refrigerant charge base,vacuum
gauge, and refrigerant recovery equipment.)
If refrigerant and/or refrigerant oil left on these tools are
mixed in with R410, or if water is mixed with R410A, it will
cause the refrigerant to deteriorate.
Since R410A does not contain chlorine, gas-leak detectors
for conventional refrigerators will not work.
Store the piping to be used during installation indoors, and
keep both ends of the piping sealed until immediately before
brazing.(keep elbows and other joints wrapped in plastic.)
If dust, dirt, or water enters the refrigerant cycle, it may
cause the oil in the unit to deteriorate or may cause the
compressor to malfunction.
A large amount of mineral oil will cause the refrigerating
machine oil to deteriorate.
Use a small amount of ester oil, ether oil, or alkylbenzene
to coat flares and flange connections.
Use liquid refrigerant to charge the system.
Charge the unit with gas refrigerant will cause the refrigerant
in the cylinder to change its composition and will lead to
a drop in performance
Do not use a charging cylinder.
The use of charging cylinder will change the composition
of the refrigerant and lead to power loss.
Exercise special care when handling the tools.
An introduction of foreign objects such as dust, dirt or
water into the refrigerant cycle will cause the refrigerating
machine oil to deteriorate.
Only use R410A refrigerant.
The use of refrigerants containing chlorine(i.e. R22) will
cause the refrigerant to deteriorate.
Caution
Caution
In the event of a refrigerant gas leak, provide adequate
ventilation to the room.
If leaked refrigerant gas is exposed to a heat source, noxious
gases may form.
Do not touch the fins on the heat exchanger with bare hands,
for they are sharp and dangerous.
Do not try to defeat the safety features of the devices, and
do not change the settings.
Defeating the safety features on the unit such as the pressure
switch and temperature switch or using parts other than the
dealer or specialist may result in fire or explosion.
When installing the unit in a small room, safeguard against
hypoxia that results from leaked refrigerant reaching the
threshold level.
Consult the dealer for necessary measures to take.
When relocating the air conditioner, consult the dealer or
a specialist.
Improper installation may result in water leak, electric shock,
or fire.
After completing the service work, check for a refrigerant
gas leak.
If leaked gas refrigerant is exposed to a heat source such
as fan heater,stove,and electric grill, noxious gases may
form.
Only use specified parts.
Have the unit professionally installed. Improper installation
may cause water leak, electric shock,smoke, or fire.
With All-Fresh type air conditioners, outdoor air may be
directly blown into the room upon thermo off. Take this into
consideration when installing the unit.
Direct exposure to outdoor air may present a health hazard,
and it may also cause food items to deteriorate.
Children should be supervised to ensure that they do not
play with the appliance.
WARNING
This appliance is not intended for use by persons (including
children) with reducedphysical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Содержание AW-YSDM048-H11
Страница 18: ...Troubleshooting 18...
Страница 20: ......
