24 INSTALLING THE SWITCH
Table 9 Items to Check
If you experience any problems operating the Switch, 
refer to “Troubleshooting”
 on page 75.
Cabling Check that all external cabling connec-
tions are secure and that no cables are 
pulled taut.
Cooling fan
(3CBLSF26PWR 
only)
Where possible, check that the cooling fan 
is operating by listening to the unit. The 
fan is fitted near to the front right hand 
side of the unit (when viewed from the 
front).