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6.3.2 Enclosure and Structural Parts
(1) Cooling fan (any time)
Check if there is any abnormality with air flow, increased fan noise, etc. Particularly make sure you have
replaced and tightened the bolts again which you removed once. Untightened screws may damage the
bearing and blade, etc. due to vibration.
(2) Air filter (once a month to once a year)
Visually check if the air filter is clogged. Slightly hit it outside the room to drop off dust, remove dirt in an
aqueous solution with neutral detergent, wash it with water and dry it.
(3) Main circuit parts and entire enclosure (once a month to once a year)
Check if dust is stuck to the enclosure interior or if there is any discoloration, heat generation, abnormal
sound, odor or damage with the reactor, tightened parts of the conductor, fuses, capacitors and resistors.
Check if some wire or mounted parts are almost broken, disconnected, loose or damaged.
6.3.3 Printed Circuit Boards
The boards which are made up of ICs and electronic components must be protected from dust, corrosive gases
and temperature. Pay attention to the installation environment of the equipment. Regularly inspecting, cleaning
and maintaining it in an optimal environment is essential to the suppression of faults of the equipment.
Since most of the components and parts are small and vulnerable to external forces, when cleaning them, use
a brush, etc. to wipe off dust.
(1) Cautions on handling
•
All maintenance work on the board should be carried out about 5 minutes after all power supplies are
turned off.
•
When removing the board, disconnect all the connectors and wires and remove the fixing screws on the
upper part of the board. At this time, be careful not to drop the boards or fixing screws.
•
When attaching the board, do so in the order opposite to the removing procedure.
At this time, connect all the connectors and wires correctly.
Note that since the control board contains capacitors, some parts continue to be live even after the
power is turned off. When storing it, place it with the aluminum frame facing down and be careful not to
cause short-circuits.
•
The spare boards were shipped placed in a bag after antistatic measures were taken. Use this bag to
store it. Note that the antistatic measures are provided only for the bag inner side.
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