Condair DL II, Operation Manual

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50 Maintenance and Replacement of components
Item Work to be carried out
Humidifier housing/
Drain pan
– Check the drain pan behind the post evaporation unit for collection of
residual water . In the event of a substantial amount of residual water, check
the water drain and post evaporation unit.
Please note: drops of water and small pools of water in the water tray behind
the post-evaporation unit are as a rule caused by the system.
– Clean the drain pan and humidifier housing (also clean behind the post
evaporation unit) with a combined detergent and disinfectant . Finally rinse
all components with hygienically pure water (RO water) and rub dry.
Components installed
upstream in the water
supply line
– To ensure hygiene the components installed upstream in the water supply line
(e.g., water filter, reverse-osmosis system, etc.) must be cleaned and maintained
in accordance with the information of the manufacturer.
Important : The water filter in the water supply line (if applicable) must be replaced
at least once a year. The water filter must be replaced immediately if the water
supply has been contaminated by a malfunction.
Electrical installation – Arrange for a qualified specialist to inspect connections and cables, fasten
connecting terminals if required . Defective installations must be rectified only
by a qualified specialist.
Humidifier water – Determine the bacterial count at the water connection to the central unit .
In the event of bacterial count concentrations above the limit of 100 cfu/ml, the
water supply/water pipes must be subject to a microbiological inspection and
appropriate action must be taken immediately (please contact your Condair
representative).
Bacterial count concentrations in the upper area of the permitted range may be
an indication of the onset of bacterial problems in the water supply. The water
supply and water pipes should also be subject to a microbiological inspection.
System air – Determine the bacterial count in the supply air before the humidifier inlet.
In the event of bacterial count concentrations above the limit of 1000 cfu/m
3
,
the ventilation system must be subject to a microbiological inspection and ap-
propriate action must be taken immediately to rectify the situation (please contact
your Condair representative).
Bacterial count concentrations in the upper area of the permitted range may
be an indication of the onset of bacterial problems in the ventilation system. The
ventilation system should also be subject to a microbiological inspection.
– Determine the bacterial count in the air at the humidifier outlet to confirm
the hygienic function of the humidifier .