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4. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE
4.3 Replacement Methods
II - 28
(2) Cooling fan
A fan is mounted on the control unit to cool the inside of the control unit.
Applicable cooling fan ........... 109P0424H702 (Sanyo Denki) or
MMF-04C24DS-ROF (Melco Technolex)
Cooling fan life....................... 30,000 hours
Always turn the control section power OFF before replacing the control unit's cooling fan.
(1) Confirm that the control unit power is OFF. (If the power is not OFF, turn it OFF.)
(2) Disconnect all cables connected to the control unit's connectors.
(3) Remove all cards mounted in the control unit's extension slots.
(4) Press the latches at the top and bottom of the control unit's front panel, and pull the front
panel with the main card.
(5) Remove the two fan fixing screws installed on the main card.
Take care at this time, as if the main card is contacted against metal sections, the data
backed up in the memory will be damaged.
(6) Disconnect the fan's connection connector.
(7) Replace with the new fan, and connect the fan's connection connector to the main card.
(8) Fix the fan with the two fan fixing screws.
Make sure that the fan faces the blowoff direction at this time.
(9) Align the main card with the rails on the control unit frame, and press in until the latches lock.
(10) Mount the cards in the control unit's extension slots.
(11) Correctly connect all cables that were connected.
Fan fixing screw
Fan
Fan connection connector
Main card
Latch
Front panel
Latch
Control unit
frame
Wind
CAUTION
Do not replace the cooling fan while the power is ON.
Dispose of the spent fan according to local laws.