Installation Procedure; Safety Cautions - Toshiba RAS-13UKV-E Service Manual

9-1. Safety Cautions

CAUTION
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT
DESTROY OZONE LAYER.
R410A refrigerant is apt to be affected by impurity such as water, oxidizing membrane, and oils because
pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with adoption of the new
refrigerant, refrigerating machine oil has been also changed. Therefore, during installation work, be sure that
water, dust, former refrigerant, or refrigerating machine oil does not enter into the refrigerating cycle of new-
refrigerant air conditioner.
To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging
port of the main unit or installation tools are different from those for the conventional refrigerant. Accordingly,
the exclusive tools are required for the new refrigerant (R410A) as shown below.
For connecting pipes, use new and clean piping materials with high pressure-tight force, which were made
for R410A only, so that water or dust does not enter. Moreover, do not use the existing piping because there
are problems about pressure-tight force and inner impurity in the existing piping.
CAUTION
This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a
contact separation of at least 3mm. The installation fuse (25A D type
power supply line of this air conditioner.
DANGER
• FOR USE BY QUALIFIED PERSONS ONLY.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE
ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED
BY WRONG WAY, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.
• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.
FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
• TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT
WELL AWAY (MORE THAN 2M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTORS,
FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY
CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT (R-22) WITH ANY OTHER GASEOUS BODY
INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT,
THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT
RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLA-
TION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS
HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.
WARNING
• Never modify this unit by removing any of the safety guards or by by-passing any of the safety interlock
switches.
• Do not install in a place which cannot bear the weight of the unit. Personal injury and property damage
can result if the unit falls.
• Before doing the electrical work, attach an approved plug to the power supply cord. And make sure the
equipment to be earthed.
• Appliance shall be installed in accordance with national wiring regulations.
If you detect any damage, do not install the unit. Contact your Toshiba dealer immediately.

9. INSTALLATION PROCEDURE

New Refrigerant Air Conditioner Installation
To Disconnect the Appliance from the Main Power Supply
– 35 –
) must be used for the