Toshiba VN-M150HE Service Manual page 6

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 for Air
to Air Heat Exchanger to the OFF position. Otherwise, electric shocks may result.
Before opening the electrical control cover or inspection cover of the Air to Air Heat Exchanger, 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 (*1) or qualified service person (*1) is allowed to remove the electrical control cover or
inspection cover of the Air to Air Heat Exchanger and do the work required.
When cleaning the filter or heat exchange element of the Air to Air Heat Exchanger, set the circuit breaker to OFF
Turn 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 an error display has appeared, there is a smell of
burning, abnormal sounds are heard, water is leaking) has occurred in the Air to Air Heat Exchanger, do not touch
the Air to Air Heat Exchanger 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 to Air Heat Exchanger in the
trouble status may cause mechanical problems to escalate or result in electric shocks or other failure.
When you access inside of the electrical control cover to 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.
Electric shock
hazard
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.
Before operating the Air to Air Heat Exchanger after having completed the work, check that the electrical control
cover and inspection cover are closed, and set the circuit breaker to the ON position. You may receive an electric
Prohibition
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 control cover and inspection cover 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.
Stay on
You may receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowed to
protection
do this kind of work.
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