Sirius 800 www.snellgroup.com Module Maintenance
Issue 1 Rev 1 Page 51 © 2014 Snell Limited
4. Once the rear panels have all been fitted open the router door.
5. Open the front fan assembly to access the area the modules are to be fitted in.
Sirius 840/850: The input and output fan assemblies should not be opened at the
same time. Fitting the input modules followed by the output modules ensures that the
fan assemblies for each are open for the minimum amount of time.
6. Insert the new module(s) (see section 5.3 for details).
7. Once the Input/Output module(s) have been fitted close the front fan frame
assemblies making sure not to trap any wires and close the router door.
If the Module slot(s) were Red in step 1 of the upgrade procedure:
a Restart Live Runner on the Door screen and check that the newly installed
modules are all Green.
b Test the signal path using one of your control devices such as; Snell Hard Panels,
Automation or the Door Dial Up Router screen.
c If the signals are passed as expected then the module update procedure is
complete
• The fan assemblies should be placed back into the closed position as soon as
possible after opening, as this ensures correct ventilation of the frame. Failure to
do this will result in failure.
• In practice the maximum time that a fan assembly can be left open will depend on a
number of factors such as; ambient temperature, frame loading, crosspoint
routings, etc. To ensure correct operation under all conditions the fan assemblies
should be left open for no more than 4 minutes at a time.
• Sirius 840/850: the crosspoint fan assembly must also be opened to access the
input modules.
• Take care when installing each of the new input/output modules and ensure that
each one is inserted slowly and straight so as not to damage the modules that are
already installed.
• Before proceeding ensure all of the new input and output modules have been fitted
to the router.
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