Nortec ME Control - Manual (Page 26)

26 Operation
4.6 Decommissioning the system
In order to decommission the Nortec ME Control (e.g. to perform maintenance works, to eliminate a
malfunction, etc.) perform the following steps:
1. If the system has to be switched off because of a malfunction, please note the Warning and Fault
code(s) of the actual error message(s) shown in the fault history.
2. Close the shut-off valve in the water supply line.
3. Empty the water tank with the manual drain function (see chapter 4.5.4 – Manual draining of the
water tank).
4. Switch off <Humdification/Cooling On/Off> and <Control unit On/Off> switch on the control unit,
and if necessary deactivate control unit via the external enable switch.
5. Disconnect control unit from the mains: switch off the electrical isolator in the mains supply to
the control unit and secure switch in “Off” position against accidentally being switched on, or clearly
mark the switch.
6. Let the fan of the ventilation system run until the evaporative module is dry.
7. If work has to be carried out on the evaporative module or the hydraulic module mounted inside the
duct, switch off the AHU and secure the system against accidentally being switched on.
Important Notes!
– For reasons of hygiene, we recommend that the control unit should be left powered on even if the
Nortec ME Control is not being used for a longer period of time. Only the <Humdification/Cooling
On/Off> switch should be switched off. This keeps the hygiene functions (e.g. periodical flushing of
water supply pipe) active and hence the build-up of germs is opposed.
– If the Nortec ME system is isolated from the mains for prolonged periods, water stagnation
might occur in supply pipework and microbial contamination result, therefore the system,
including any storage tanks or vessels should be drained and left dry. Before putting the system
back into operation, a full risk assessment should be undertaken to ensure safe operation, with
particular attention paid to water supply quality. Additionally a complete system service has to
be performed prior to putting the system back in operation.