Cooling Troubleshooting - Princeton Instruments PhotonMAX System Manual

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Cooling Troubleshooting

Temperature Lock Cannot be Achieved or Maintained.
Possible causes for not being able to achieve or maintain lock could include:
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WARNING!
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PhotonMAX System Manual
Ambient temperature greater than +25°C. This condition affects TE-cooled
cameras. If ambient is greater than +25°C, you will need to cool the camera
environment or raise the set temperature.
Airflow through the camera and/or circulator is obstructed. The camera needs to
have approximately two (2) inches (50 mm) clearance around the vented covers.
If there is an enclosure involved, the enclosure needs to have unrestricted flow to
an open environment. The camera vents its heat out the vents near the nose. The
air intake is near the rear of the camera.
A hose is kinked. Unkink the hose.
Coolant level is low. Add coolant.
1. With hoses connected, place the camera and CoolCUBE circulator at the
same level.
2. Turn on the circulator.
3. Using the supplied hex tool, open the fill port.
4. Add a 50:50 mix of ethylene glycol and water (only a few cc's are needed).
5. Using the supplied hex tool, close the fill port. DO NOT OVERTIGHTEN.
There may be air in the hoses. Add coolant.
If more than two (2) inches of the coolant line is filled with air, the pump will
stop working and may be damaged. If the flow stops while the pump is on, turn
off the circulator and add fluid.
1. With hoses connected, place the camera and CoolCUBE circulator at the
same level.
2. Turn on the circulator.
3. Using the supplied hex tool, open the fill port.
4. Add a 50:50 mix of ethylene glycol and water (only a few cc's are needed).
5. Using the supplied hex tool, close the fill port. DO NOT OVERTIGHTEN.
Circulator pump is not working. If you do not hear the pump running when the
circulator is powered on, turn off the circulator and contact Customer Support.
The camera has been placed three (3) meters or more above the circulator. If the
camera is too high above the circulator, lower the camera or raise the circulator.
The vacuum has deteriorated and needs to be refreshed. Contact Customer
Support.
The target array temperature is not appropriate for your particular camera and CCD
array.
The camera's internal temperature may be too high, such as might occur if the
operating environment is particularly warm or if you are attempting to operate at
a temperature colder than the specified limit. TE cameras are equipped with a
Version 1.B