Nortec ME Direct Feed - Manual (Page 28)

28 Maintenance
5.4 Dismantling and installation of components for maintenance
5.4.1 Dismantling and installation of the evaporative module
1. Take the Nortec ME Direct Feed out of operation as described in chapter 4.6 – Decommissioning
the system and allow to drain and dry.
2. Switch the AHU off, and isolate the power and water supply to the AHU.
3. Disconnect distribution hoses from the connectors on the distribution heads, the wall feed-throughs
(if applicable) and the hydraulic manifold.
4. Remove droplet separator boxes (column by column):
• Remove upper separator brackets.
• Remove bank of separator boxes.
• Remove lower separator brackets.
5. Remove evaporative cassettes (column by column):
• Push box upwards and remove.
6. Remove distribution headers assemblies from topmost evaporative cassettes:
• Remove plastic rivets fixing the distribution header assembly to the evaporative cassette.
• Carefully lift off the distribution header assembly.
7. Remove the cross bar (remember position).
Clean dismantled components, water tank, frame structure, blanking plates and air duct as described in
chapter 5.3 – Maintenance guide. If all components have been cleaned and dried, assemble the evapo-
rative module in the reverse dismantling order. Replace any defective components with new ones.
5.5 Consumables Guide
Common consumables
Description Standard Frequency (month)
DISIFIN XL 1
Disinfection chemical (sourced locally) 6
Descaling chemical (sourced locally) as required
Inlet flow restrictor 24
Distribution header feed hose 24
Evaporative matrix cassette
– Wholesome mains water
– RO water
36 - 60
60 - 84 +