Andor Technology iXon Ultra 897 User Manual page 130

Whichever cooling method you are using, make sure that the detector head does not
overheat, as this can cause component failure. Overheating may occur if:
The air vents on the sides of the head are accidentally blocked.
1.
2. You are using air cooling and have selected an operating temperature that is
lower than the minimum achievable temperature. To check the minimum
achievable temperature, refer to the Air Cooling Performance table supplied
with your system specifications.
To protect the detector from overheating, a thermal switch has been attached to the
heatsink. If the temperature of the heatsink rises above 40°C, the current supply to
the cooler will cut out and a buzzer will sound. The cut-out will automatically reset
itself once the head has cooled. It is not recommended that you operate in conditions
that would cause repeated cut-outs as the thermal switch has a limited number of
operations.
NEVER BLOCK THE AIR VENTS ON THE DETECTOR HEAD
The table below is a guide to the minimum achievable operating temperatures for various
room temperatures. Performance of individual systems will vary slightly.
Evacuated Housing-High Performance Cooling with Power Supply Block (PSB)
Air Temp External PSU Box
o
20 C
-60°C
o
25 C
-58°C
o
30 C
-56°C
Note that the relationship between the air temperature and the minimum CCD temperature in
the table is not linear, this is because TE coolers become less efficient as they get colder.
SETTING THE TEMPERATURE
Page 130
Head Overheating
Performance Tables
Air Cooling
Section 4 . 12