Nortec ME Direct Feed - Manual (Page 20)

20 Operation
10. Perform pressure test: Turn on water supply and check for leaks. Ensure double check valve is
installed correctly.
After the system has been inspected and found correct proceed with the initial commissioning:
1. Ensure AHU is switched off.
2. If evaporative cassettes have become dirty or damp prior to commissioning, then disinfect the system
as described in sections 5.3 and 5.9 of this manual.
3. Validate control requirements and enable a full demand to unit. If Nortec control unit is used, check
for correct connections and operation when switched on.
4. If using the Nortec control unit the system will purge the water supply line, when first switched on.
Normal operation will commence after three minutes.
5. Flush water through all cassettes (ensure all stages are operating if stage control option).
6. Check water is flowing to drain with no leakage.
7. Allow system to flush with full demand until water is clean.
8. Check all components are operating correctly (including any option kits i.e. inlet valve, drain valve,
purge valve, stage valves).
9. Test correct flow of water to distribution header.
10. Switch on fan of AHU and test operation with fans running and validate air conditions against the
design data.
11. Test controls set up and ensure correct set points. If drain or automatic flush options are installed,
set up suitable cycles.
12. Switch off AHU.
13. Wipe tank clean (including section under cassettes).
14. If commissioning has not been completed by an approved Nortec representative, it is recommended
that records are kept of commissioning date and software settings.
15. Demonstrate system to customer and highlight hygiene and maintenance requirements.
16. Raise any installation concerns.
17. Issue commissioning documentation.
The system is now ready for normal operation.