EVCO c-pro nano CHIL - Manual (Page 114)

C-PRO NANO CHIL AND C-PRO MICRO CHIL – APPLICATION MANUAL
Pag. 114
T
Set
ON
OFF
ON
OFF
Diff
Fan
Compressor
In order to enable this function, the external temperature probe (PH24) must also be enabled. In
case the probe is not correctly configured, or is faulty, the fan is always switched ON, so as to
guarantee its operation anyway, and to prevent potential damage to the plant.
6.10.2 Recirculating fan status
To each fan, an operating status is associated, which is visible from the associated LED or in the
status template from the main menu. A fan can take on the following statuses:
- Disabled: The fan has not been configured, the status display shows “dIS”.
- On: The status display shows “On”.
- Off: The status display shows “Off”.
- Alarm: The fan is in alarm status. The status display shows “ALAr”.
In the Maintenance Operator menu, via parameter PM31, it is possible to read the number of
operating hours of the delivery fan. To zero these hours when required, it is sufficient to enter a “0”
value, using the ENTER key.
6.11 Flow Meter Management
The flow meter is managed after the initial start-up phase of the unit and after the Flow meter start
delay PA01; once this interval has elapsed, if the contact signals a lack of flow, the associated alarm
is immediately triggered, thus inhibiting the starting of compressors.
During normal operation, the flow sensor is constantly monitored; if the contact signals a lack of
flow for a period exceeding the value of parameter Flow-meter alarm by-pass PA02, the associated
alarm is immediately triggered, and any active compressors are switched OFF.