Instruction manual

5. Adding and Replacing Optional Modules
117
5.3 Replacing a fan unit
A fan unit can be replaced while the Switch is on.
Replacing a fan unit must be performed by a trained technician or
maintenance personnel.
If another person performs the above and mishandles the fan unit,
injury or damage could result.
CAUTION
When replacing a fan unit with the Switch on, you must remove and
replace the unit within one minute. If the operation takes longer than
one minute, the temperature inside the Switch will rise and possibly
cause a failure.
(1) Removing a fan unit
Step 1
Loosen the screws of the fan unit.
Figure 5-1 Removing a fan unit (1)
(1) Screws
(2) Fan unit