YASKAWA U1000 Series Technical Manual page 422

7.4 Cooling Fan and Circulation Fan
Harmonic Filter Module
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WARNING! Electrical Shock Hazard. Do not connect or disconnect wiring while the power is on. Failure to comply can result in serious
personal injury. Before servicing the harmonic filter module, disconnect all power to the equipment. The internal capacitor remains
charged even after the power supply is turned off. After shutting off the power, wait for at least the amount of time specified on the
harmonic filter module before touching any components.
CAUTION! Burn Hazard. Do not touch a hot harmonic filter module heatsink. Failure to comply could result in minor or moderate
injury. Shut off the power to the harmonic filter module when replacing the cooling fan. To prevent burns, wait at least 15 minutes and
ensure the heatsink has cooled down.
NOTICE: Prevent Equipment Damage. Follow cooling fan and circulation fan replacement instructions. Improper fan replacement
could result in damage to equipment. Follow the instructions and replace the whole unit when replacing the cooling fan.
Removing the Cooling Fan Unit
CAUTION! Crush Hazard. Do not completely remove the cover screws, just loosen them. If the cover screws are removed completely,
the terminal cover may fall off causing an injury. Take special care when removing/reattaching the terminal covers for larger harmonic
filter modules.
1.
Loosen the six screws that hold the harmonic filter module cover 1 in place and free it from the harmonic filter
module.
Figure 7.56
2.
Loosen the nine screws that hold the terminal cover in place and free it from the harmonic filter module.
Figure 7.57
422
Six-screw locations
Figure 7.56 Remove the Harmonic Filter Module Cover 1
Nine-screw locations
Figure 7.57 Remove the Terminal Cover
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual