Nortec ME Direct Feed - Manual (Page 29)

29 Maintenance
Option consumables
Description Standard Frequency (month)
PureFlo Ag+ sediment filter 6
PureFlo Ag+ antimicrobial filter 12
Contact your Nortec distributor for consumables list/order codes.
To help us ensure that the correct spares parts are sent, please confirm your unit serial and model
number with your order.
5.6 Health and Safety Requirements
In accordance with local regulations, users must take water samples for Legionella analysis. Samples
should be taken from the same places as described in chapter 5.7 – Routine Water Sampling and Test-
ing, and the analysis carried out by an accredited laboratory which is part of an appropriately certified
Legionella testing scheme. In the event that the Legionella content exceeds 10 2 cfu/l, the humidifier
should be switched off and specialist advice sought regarding its disinfection.
1. If biofilm (a slimy or gel-like deposit when wet, which might be dry and crisp in a dry system) is found
during any inspection of the humidifier or water system, the humidifier MUST be switched off and
not put back into operation until the system has been taken apart, scrubbed and thoroughly cleaned
with a suitable biocide with biofilm penetrating qualities such as 50 ppm chlorine dioxide solution.
This work should only be carried out by fully trained specialist organisations or individuals.
2. The optional Nortec ME Direct Feed control unit must be left powered on to allow automatic
flushing and cleaning cycles to occur. If the optional Nortec ME Direct Feed control unit is powered
off for prolonged periods, water stagnation might occur and contamination result, so the system,
including any storage tanks or vessels should be drained and left dry. Before putting the system
back into service, the water pipework supplying the Nortec ME Direct Feed should be purged care-
fully, avoiding the creation of aerosols by splashing, and a water sample should be taken to ensure
cleanliness. In the event that the humidifier pipework contains any residual water or has remained
damp, and the temperature exceeded 20 °C (68°F), the Nortec ME Direct Feed should be disinfected
using an appropriate solution.
Contact your Nortec representative for advice on water sampling and analysis, disinfection of systems,
service and maintenance.