14. Appendix
49
D SERIES Lake Operation Manual rev 3.0.4
14. Appendix
48
D SERIES Lake Operation Manual rev 3.0.3
14.3. Maintenance
During normal operation a D Series device provides trouble–free service. If the front panel display requires cleaning,
use a soft cloth only; do not use solvent cleaners.
The dust lters on both sides of the front panel, behind the grilles, should occasionally be removed and cleaned to
ensure maximum airow through the device. Disconnect the unit from mains power prior to removing dust the lter,
and ensure the dust lter is replaced prior to turning the unit back on.
In extreme cases it may be necessary to clean the inside of the device. This procedure should only be carried out
by qualied service personnel. Internal cleaning may be necessary if the device has had prolonged operation in an
extreme environment such as one where cracked oil smoke machines are in use. If the device is used in extreme
conditions, it is recommended to have it serviced every three years as a preventative measure.
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