Toshiba RAS-2M21U2ACVG-SG Service Manual page 8

• Installation work must be performed following the instructions in this installation manual.
Improper installation may cause water leakage, electrical shock or fire. Check the
following items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it may cause
overpressure and result in compressor damage. At the same time, if there is a leak in
the connection part, it may cause air suction and overpressure, resulting in burst or
injury.
• The installation of pipe work shall be kept to a minimum.
• The following must be certainly done during pump down.
• Do not incorporate air into the refrigeration cycle.
• Close the 2 service valves. Stop the compressor and remove the refrigerant pipe.
If the refrigerant pipe is removed when the compressor is operating and service valves are
opened, the refrigerant cycle will inhale unwanted matter such as air and the pressure in
the cycle becomes abnormally elevated. It may cause a burst or injury.
• Do not modify the power cable, connect the cable midway, or use a multiple outlet
extension cable. Doing so may cause contact failure, insulation failure, or excess current,
resulting in fire or electrical shock.
• If you detect any damage, do not install the unit. Contact your supplying dealer
immediately.
• Never modify this unit by removing any of the safety guards or bypassing any of the safety
interlock switches.
• Do not wash air conditioners with pressure washers.
Electric leaks may cause electric shocks or fires.
• Be sure to comply with local regulations/codes when running the wire from the outdoor
unit to the indoor unit. (Size of wire and wiring method etc.)
• When installing the air conditioner in a small room, provide appropriate measures to
ensure that the concentration of refrigerant leakage occur in the room does not exceed
the critical level. It is not dangerous refrigerant; it has not toxicity.
However, a concentration above 0.3 kg/m³ as criterion still causes suffocation. The volume
of refrigerant charged to the multi system air conditioner is more than the volume charged
to a conventional individual system.
• Before operating the air conditioner after having completed the work, check that the
electrical parts control box cover of the indoor unit and valve cover of the outdoor unit are
closed, and set the circuit breaker to the ON position. You may receive an electric shock
etc. if the power is turned on without first conducting these checks.
• Make sure drain hose insulation if cooling operation is used at sub-zero ambient
temperature.
WARNING
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