FPG Visair IN-VH06, Руководство по эксплуатации продукта

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IN-VH06, VH09, VH12, VH18 and VH24
- 17 - © Future Products Group
Cooling Fans
VISAIR CABINETS - SERVICING
Requirement Not all models require cooling fans.
Fan Operation The fans cool the cabinet top, by circulating air drawn via the cavity behind the
insulated back of the cabinet.
If the top of the cabinet becomes very hot, the fan or its power supply may have
failed.
Fan Access
The rear panel of the cabinet must be
removed to access the fans.
It is recommended to clean accumulated
dust and fluff from the fans when servicing
the cabinet.
Power Supply Each fan operates from a 24V dc power supply, housed in the control gear
chassis of the corresponding cabinet section.
Element Failure
VISAIR CABINETS
-
SERVICING
Alarm
Indication In the event of one or more infrared elements failing, the under current relay will
close the digital input to the Dixell controller.
After one minute the Dixell controller will display the alarm
“EA”
along with an
audible alarm sound.
The cabinet will continue to operate while alarming. The alarm is cancelled by
turning the cabinet power off.
Correction Locate and replace the faulty element or elements. Turn the cabinet power back on and
check the operation of all elements. The front elements are turned on with the first cycle
time (6min). The rear elements are turned on with the second cycle time (4min).
Note: On the VH24 cabinet there is a separate under-current detection relay for
the left and right side of the cabinet.
During the fault condition, the relay which has detected the fault will have its
yellow and red status indicator LEDs on.