8
Isotherm
3.2.2 Opening/Closing Outer Door
Pull-down the handle to open the door, and pull-up to close the door.
NOTE:
As there are 2 knobs at the top and bottom of the outer door, the outer chamber may be damaged by the knobs if
door handle is pulled-up during closing the door.
3.2.3 Setting Temperature (0
o
C – 100
o
C)
Step
Description
Button
Display
1
Press SET TEMP button to start the setting.
SET TEMP
2
Press UP/DOWN button to set the temperature set point. Press SET
TEMP to save setting
UP/DOWN –
SET TEMP
NOTE:
If the ambient temperature does not meet requirement (15
o
C~30
o
C), the AMBIENT ALERT LED will light up and a
buzzer will sound every 20 sec as warning. The buzzer can be stopped by pressing the MUTE button.
Refrigerating system’s compressor will start working according to temperature set point and ambient
temperature. REFRIGERATING LED will light up when the equipment is in the refrigeration process.
UV LAMP LED will light up when the UV lamp is on.
3.2.4 Protection Devices
This is a non-adjustable temperature protection. The factory set value 110
o
C maximum. This electronic over-
temperature protection system is monitored by Protection Class 3.1 to DIN 12 880.If temperature in inner
chamber exceeds 110
o
C, heating within equipment will be stopped. As a warning, the OVER TEMPERATURE
LED will light up.
If this happens:
Switch off the equipment or even cut off the power supply and allow equipment to cool down.
Rectify the fault - contact customer service for assistance.
Re-start the device after the equipment is cooled down and fault has been rectified.
3.2.5 Auto-Defrosting
Auto-defrosting will be operated every 6 hours as temperature set point ≤ 11
o
C and every 24 hours as
temperature set point ≥ 11
o
C.Temperature will slightly fluctuate during defrosting.
Auto-defrosting will fail when the temperature in the inner chamber is or close to 0
o
C. If necessary,
use manual-defrost.
Every time user completes a test without refrigeration and next step wants to do the test with
refrigeration system running, please select heating-defrost program (or set 50
o
C) and open the door
for at least 30 minutes. Without this process, the auto-defrost performance may be affected
3.2.6 Placement of Loads
Full considerations must be given to physical and chemical properties of your load in order to prevent serious
damage to load, equipment and surroundings.
Note:
Isotherm Low Temperature BOD Incubator (IFC) is not explosion-proof, thus it is not suitable for
drying, evaporating and burning-in of paints, enamels or similar materials whose solvents may
produce an inflammable mixture with air.
There must be no possibility of the formation of inflammable gas / air mixtures either within the
equipment or in the immediate surroundings of the equipment.
Large amount of dust or corrosive fumes inside the equipment or in the surroundings of the
equipment may produce deposits within the equipment and lead to short circuits or damage of
electronics. Therefore it is important that adequate precautions are taken against excessive dust or
corrosive fumes.
In order to ensure good ventilation within equipment, the space for placing loads should not exceed
half volume of workroom (refer to “Technical Specification Summary Table”). Do not divide workroom
into several separate parts by the loads with larger area.
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