Decommissioning The System - Condair ME Series Installation And Operation Manual

6.7

Decommissioning the system

In order to decommission the Condair MC (e.g. to perform maintenance works, to eliminate a malfunc-
tion, etc.) perform the following steps:
1. If the system has to be switched off because of a malfunction, please note the fault mode sequence
displayed by the LED.
2. Close the shut-off valve in the water supply line.
3. Switch off the <Control unit On/Off> switch on the control unit, and if necessary deactivate control
unit via the external enable switch.
4. 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.
5. Let the fan of the ventilation system run until the evaporative module is dry.
6. 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
– If the Condair MC is in working order, then for hygiene reasons we recommend that the system
should be left powered on, even if the Condair MC is not going to be used for a prolonged period
of time. To prevent the Condair MC from humidifying/cooling switch off the <Control unit On/Off>
switch on the control unit, and if necessary deactivate control unit via the external enable switch.
This keeps the hygiene functions (e.g. periodical flushing of water supply pipe) active and hence
the build-up of bacteria is opposed.
DANGER!
If the Condair MC is isolated from the mains power for a prolonged period, water stagnation might
occur in the supply pipe work, and microbial contamination of the supply pipe work and Condair
MC could result.
– If the Condair MC is to be isolated from the mains for a prolonged period, then the MC and any stor-
age tanks or vessels should be drained and left dry, the pumps should be removed from the hydraulic
module to ensure all water is drained from the pump housings. Before putting the system back in
to 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 to operation.
57
Operation