－27－
Caution
The supply voltage must be as specified on the rating plate of the
unit.
Electrical connection should be made via appropriate an earth
leakage breaker as shown in the right.
Ground the wire without fail to prevent electrical shocks
For earth leakage breakers, use a reference value of 30mA for
sensitivity rating as a guide of selection.
Electrical works required for installation of the unit must be done only by specialists. Improper installation may
result in electrical shocks or fires.
For protection of the compressor, wait at least 30 minutes after installation before connecting power to start
operation.
Hermetically seal the enclosure all round.
Inferior sealing may cause condensation which lead to poor cooling efficiency.
Put covers on the components inside the enclosure to protect them from cutting dust during installation work.
[Short circuit]
Electric components or other objects near the cool air outlet
may disturb cool air circulation. If the cool air hit against
them, it will directly return to the suction port without being
distributed to the whole area in the enclosure. This causes
not only troubles of the components but may negatively
affect operation of the cooling unit which lead to overcurrent
and product failure.
In case such short circuit is found during cooling operation,
improve the environment by attaching rectifying plates or
installing agitation fans as necessary.
Earth
Breaker for
Leakage
R
S
Compressor
Cooler
Rectifying
plate
Agitation fan
Control equipment
Cool
air
Compressor
Cooler
