Toshiba Carrier TCB-IFDMR01UP-UL Service Manual page 5

PRECAUTIONS FOR SAFETY
The manufacturer shall not assume any liability for the damage caused by not observing the description of this
manual.
DANGER
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit
breaker to the OFF position. Otherwise, electric shocks may result.
Before opening the electrical box cover, set the circuit breaker to the OFF position. Failure to set the
circuit breaker to the OFF position may result in electric shocks through contact with the interior
parts. Only a qualified installer or qualified service person is allowed to remove the electrical box
cover
Turn off
When cleaning the filter (sold separately) or other parts of the indoor unit, set the circuit breaker to OFF
breaker
without fail, and place a "Work in progress" sign near the circuit breaker before proceeding with the work.
When you have noticed that some kind of trouble (such as when a check display has appeared, there is
a smell of burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is
leaking) has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit
breaker to the OFF position, and contact a qualified service person. Take steps to ensure that the
power will not be turned on (by marking "out of service" near the circuit breaker, for instance) until
qualified service person arrives. Continuing to use the air conditioner in the trouble status may cause
mechanical problems to escalate or result in electric shocks or other failure.
When you repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing
immediately. Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural
discharge of the capacitor takes about five minutes.
When checking the electric parts, removing the cover of the electric parts box of the VRF Dx-coil
Electric
interface inevitably to determine the failure, use gloves to provide protection for electricians, insulating
shock hazard
shoes, clothing to provide protection from electric shock and insulating tools. Be careful not to touch the
live part. Electric shock may result. Only "Qualified service person" is allowed to do this work.
Place a "Work in progress" sign near the circuit breaker while the installation, maintenance, repair or
removal work is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
When checking the electric parts, removing the cover of the electric parts box of the VRF Dx-coil
interface inevitably to determine the failure, put a sign "Do not enter" around the site before the work.
Failure to do this may result in third person getting electric shock.
Prohibition
Before operating the air conditioner after having completed the work, check that the electrical parts box
cover of the VRF Dx-coil interface is closed, and set the circuit breaker to the ON position.
You may receive an electric shock if the power is turned on without first conducting these checks.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical
parts with the electrical parts box cover of one or more the VRF Dx-coil interface removed in order to
find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated boots and
insulated work overalls, and take care to avoid touching any live parts. You may receive an electric
Stay on
shock if you fail to heed this warning. Only qualified service person is allowed to do this kind of work.
protection
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