Toshiba MMU-AP0152SH, Service Manual

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After repair work, surely assemble the disassembled parts, and connect and lead the
removed cables as before. Perform the work so that the cabinet or panel does not
catch the inner cables.
If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or
fire is caused at user’s side.
After the work has finished, be sure to use an insulation tester set (500V mugger) to
check the resistance is 2MW or more between the charge section and the non-charge
metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s
side.
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the
refrigerant and the closed room full with gas is dangerous because a shortage of oxygen
occurs. Be sure to execute ventilation.
When checking the circuit inevitably under condition of the power-ON, use rubber
gloves and others not to touch to the charging section.
If touching to the charging section, an electric shock may be caused.
When the refrigerant gas leaks, find up the leaked position and repair it surely.
If the leaked position cannot be found up and the repair work is interrupted, pump-down
and tighten the service valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking
stove though the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant such
as a multi air conditioner in a sub-room, it is necessary that the density does not the
limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is
caused.
For the installation/moving/reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric
shock or fire is caused.
After repair work has finished, check there is no trouble.
If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off
the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test
run to check there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the
front panel and cabinet.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
Be sure to put on gloves (
∗∗∗∗∗
) during repair work.
If not putting on gloves, an injury may be caused with the parts, etc.
(
∗
) Heavy gloves such as work gloves
When the power was turned on, start to work after the equipment has been
sufficiently cooled.
As temperature of the compressor pipes and others became high due to cooling/heating
operation, a burn may be caused.
Insulator check
Ventilation
Be attentive to
electric shock
Compulsion
Check after rerair
Check after reinstallation
Put on gloves
Cooling check
WARNING
CAUTION
Assembly/Cabling