Ryobi P112 Instruction Manual Page 293

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CHAPTER 3 MAINTENANCE
5. Daily Maintenance
III – 29
5.2.3 Replacing the cooling fan
A fan for cooling the card PC is installed on the top of the control section in systems mounted with a card
PC.
The cooling fan specifications are such that it does not operate if the temperature detected is the setting
temperature or less.
Cooling fan ......... MMF-04B05DM-R (DDK, with Mitsubishi Electric specifications)
Cooling fan life.... 30,000 hours
(1) Replacement procedure
Turn the control section power OFF when replacing the cooling fan.
1) Confirm that the control section power is OFF. (If the power is not OFF, turn it OFF.)
2) Open the operation box door.
3) Remove the fan cover on the top center of the control section. (Remove the fan cover by
inserting a flat-tip screwdriver (small) in the slot on the control section cooling fan housing.)
4) Pull out the cooling fan from the control section cooling fan housing.
5) Pull the connector connected to the cooling fan out from the control section PCB.
6) Replace the cooling fan with the new one. Insert the connector connected to the new cooling fan
into the control section PCB.
7) Put the cooling fan into the control section cooling fan housing. (Be sure the arrow on the side of
the cooling fan is pointing up.)
8) Arrange the cooling fan wiring neatly in the control section cooling fan housing.
9) Install the fan cover. (First install the side with tabs only in the control section. Then install the
side with tabs and a slot.)
10) Close the operation box door.
Fan cover
Cooling fan
Connector
Fan housing (enlarged view)
Control
section
CAUTION
Do not replace the cooling fan while the power is ON.
Dispose of the old cooling fan according to local laws.
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