User Guide Owner's manual

Section 4: Maintenance VN-QUANTUM User Guide
Page 88 I455GB issue 8
Removing and Replacing a Cooling Fan
Always use an Electrosonic Replacement Fan, Part No. ES3301-F or ES3302-F.
 Remove the upper access panel by unscrewing the two thumbscrews.
 Unplug the supply lead to the faulty fan.
 Remove the single retaining screw from above the fan.
 Withdraw the fan by tilting the top forward and lifting away.
NOTE: When replacing the fan ensure that the two lugs (on the base of the fan housing) correctly
locate inside the aperture in the card frame.
Cleaning the Ventilation Grilles & Filters
It is recommended that the front ventilation grilles and air filters are checked periodically for a build-up
of dust. Excess dust deposits will reduce the efficiency of the cooling fans and may cause the unit to
overheat.
To clean the grilles and filters, use a vacuum cleaner (and if necessary a soft brush) to remove any
dust deposits.
Supply Plug
Retaining Screw