52
Step 4 - Drain Cycle
Screen four allows setting the parameters for the Drain Cycle. To reduce the
risk of bacterial growth caused by water stagnation in the system, the HE2
system carries out a Drain Cycle. The HE2 can be set to operate the Drain
Cycle at a preset time of day (“Time Mode”), or after a preset period of non-
operation (“Interval Mode”). After selecting the required Drain Cycle mode,
scrolling right will display the page on which the time, or interval, can be set.
Step 5 - Assisted Drain
Screen five allows Assisted Drain mode to be enabled or disabled. On larger
HE2 systems, the volume of water held in the evaporative matrix during
operation is significant. When there is no demand and the pump stops run-
ning, this water runs back to the tank and can increase the water level to a
point at which it will leave the system through the overflow. To help prevent
this, Assisted Drain mode opens the motorised drain valve when there is no
demand until the water reaches the low operating level, at which point it
closes.
Step 6 - Water Temperature Monitoring (Optional, “
HE2
MC3 Plus
” only)
Screen six allows settings the parameters for the Water Temperature
Monitoring function. Where fitted, the temperature limit for the tank can be
preset, along with the delay after which an alarm output is required. When the
system is running and the water temperature exceeds the preset limit, the
HE2 system will simultaneously open the inlet solenoid and motorised drain
valve to bring in fresh water and reduce the operating water temperature of
the system. If the temperature does not decrease to below the Limit” within
the “Fault Time”, the unit will enter a fault mode and activate an alarm output.
Step 7 - Disinfection Counter
The next screen is the disinfection counter. The disinfection counter is
designed to raise an alarm after a pre-defined period, to notify when a disin-
fection of the HE2 is due. Once the disinfection has been completed, the
right arrow key should be held for 10 seconds to rest the counter.
Step 8 - Panel Off Fault
Screen eight is the Panel Off Fault. When enabled, the controller will activate
an alarm if the panel switch is in the off or manual drain position for longer
than the “Limit’. If the Limit is set to “0” hours, the microprocessor will activate
an alarm as soon as the panel is switched off or to manual drain.
Step 9 - Service Counter
Screen nine allows setting the service interval counter parameters for the HE2
system. The HE2 system will provide a warning when a service will soon be
required, and will activate an alarm output when the service frequency is
reached. The Service Counter does not interrupt normal system operation.
The Service Schedule page includes a “Total Hours Run” counter for the HE2
system. After completing a service, pressing and holding the right arrow but-
ton for ~10secs will reset the “Due In” counter and clear a fault if applicable.
DRAIN CYCLE
Start Time: 00:01
DRAIN CYCLE
Interval: 30 hrs
ASSISTED DRAIN
Enabled
H2O TEMPERATURE
Limit: 20 C
Fault Time: 5 mins
DISINFECTION
Interval:
____
10
_
mths
Due in:
______
28
_
mths
PANEL OFF FAULT
Enabled ->
PANEL OFF FAULT
<-
_
Limit:
___
****
_
hrs
SERVICE SCHEDULE
Interval:
____
200
_
hrs
Due in:
______
200
_
hrs
Total run:
_____
0
_
hrs
Содержание HE2
Страница 2: ......
Страница 75: ...Condair Ltd Printed in Switzerland Technical modifications reserved...