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Page 47
2008-12-03
In any case the Nortec MH is to be maintained at least twice annually.
On units equipped with a MH control unit (MHTC Flow, and MHTC Reflow) the
maintenance interval can be programmed. As soon as the maintenance time has
elapsed, a maintenance message is displayed to draw your attention to the pending
maintenance. To determine the maintenance interval time, the above described
procedure can be used.
1.3 MAINTENANCE WORK
Component Work to be carried out
Humidification boxes
and mist eliminator
boxes.
Dismantle and check the humidification boxes (and
mist eliminator boxes). Clean the frame of the boxes
with a combined detergent and disinfectant. If the
humidifier fleece is heavily soiled, the humidification
boxes have to be replaced.
Note: If the humidification boxes indicate strong dust
deposit, the air filter of the ventilation system is to be
controlled (filter quality at least MERV 11 according to
ASHRAE 52.2 Standard).
Water tank
Check water tank for soiling (dust, slime, mineral
deposit, etc.) and clean with a combined detergent and
disinfectant.
Note: The actual hygiene status indicates, whether the
maintenance interval time must be decreased or
increased.
Frame structure
Check screw connections of the frame structure, tight
loose screw connections. Clean frame structure with a
combined detergent and disinfectant.
Duct section
downstream of the
humidifier
Check the duct section behind the humidifier
(downstream) for collection of residual water. If
residual water is present: Check air velocity above the
humidification boxes (without mist eliminator max. 690
Fpm (3.5 m/s), with mist eliminator max. 885 Fpm (4.5
m/s), respectively). Mount mist eliminator if necessary.
Clean duct with a combined detergent and disinfectant.
Hydraulic unit
Check connections and components for sealing and
correct fastening. Seal/replace leaky components,
replace defective components, and fasten loose
components. Carefully clean the components of the
hydraulic unit with a combined detergent and