2 Installation and Operation
2-2
2-3-2 Ventilation
The front and rear panels of the power supply unit are air intake and exhaust respectively for
cooling. Secure enough space for use in a place as well ventilated as possible.
Be sure to secure air intake (10 cm or more clearance on the right side for 44H and 30 cm or
more clearance from the front panel for other models) and exhaust (30 cm or more clearance
from the rear panel).
Where there is dust on air intake holes remove it immediately as it can prevent the enough
cooling of the power supply.
2-3-3 Bias
The maximum voltage for use with the output floating (biased) with reference to the ground is
250 VDC.
Watch for the bias voltage generated at the output terminals and the rear connector TB1.
！
MUST
CAUTION
Air intake（89,133H case）
Exhaust
Air intake（44H case）
