MANUALP/4000_SERVICE_0712 July2012
12
To display the Relative Humidity (Non INFRA-RED Models ONLY): Press
the CO
2
button momentarily and the CO
2
display will indicate the %RH. After a
few seconds the display will return to displaying the CO
2
reading.
CONDENSATION:
It is normal for a small amount of condensation to appear on the side walls
and glass door(s) and floor when operating with humidities above 85%
RH. Any water accumulating on the floor of the cabinet should be
removed at regular intervals.
CAUTION: This chamber has been fitted with a SPECIAL UVC Sterilising lamp
located behind the stainless steel rear duct. Note that this ULTRA-VIOLET
lamp is HARMFUL to the eyes and MUST NOT be viewed directly or indirectly
for any period.
The lamp is automatically turned OFF when the outer door is opened and turns
ON for 5 minutes when the door is reclosed.
CONFIRMATION OF OPERATING PARAMETERS
Contherm check the Temperature, and CO
2
calibration in the factory in the final
testing stages. For your confidence it is advisable to obtain your own calibration
so as to ensure the enclosure is operating to your satisfaction. This must be
carried out in the enclosures final operating environment. A full procedure for
calibrating the enclosure in given in the CALIBRATION Chapter.
TROPICOOL UNITS:
This type of cabinet is fitted with Contherm’s ‘Tropicool’ peltier cooling option.
The Tropicool unit uses a peltier cooling device to obtain lower temperatures,
typically allowing operation to 5
o
C below ambient. The ‘Tropicool’ unit runs
continuously.
COOLED UNITS:
This type of cabinet is fitted with a special refrigeration unit, the lowest
temperature of which is factory set via a ‘evaporator pressure regulator’ to
minimise the dehumidifying effect of the cooling coils. The minimum attainable
temperature will be about +15
o
C. The refrigeration unit runs continuously.
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