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8.3 Maintenance
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or electrical work!
• Keep the unit surface free from dust.
• Clean the filters every three months with a vacuum cleaner and replace the filters every year. This may differ per situation depending on internal and
external environmental conditions (fig.8 b-c-d-e-f).
Fig. 8.b
Fig. 8.d
Fig. 8.f
WARNING
Fig. 8.c
Fig. 8.e
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