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| == Cleaning the glass chamber == | | == Cleaning the glass chamber == |
| | : Standard operating procedure - cleaning and storage of the O2k-Chamber: » [[MiPNet19.03 O2k-cleaning and ISS]] |
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| : Standard operating procedure - cleaning and storage of the O2k-Chamber: >> [[MiPNet19.03 O2k-cleaning and ISS]]
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| | | == Chamber assembly and dissassembly == |
| == Chamber assembly == | | :» [[MiPNet19.18A_O2k-Start]]. |
| : The assembly of the chamber is described in [[MiPNet19.18A_O2k-Start]].
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| '''Possible problems'''
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| :* Chamber leaking liquids (medium is leaking out of the chamber)
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| :* Oxygen leak of the chamber (strongly negative intercept in the [[instrumental background test]]
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| :* Unstable O2 signal
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| :* Unexpected high or low O2 signal
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| '''Trouble shooting procedure'''
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| : If the problem is obviously related to the chamber proceed to solutions. If the problem manifests in a very low or zero raw signal, the possible contribution of chamber assembly to the problem is easily checked by doing the first step of [[Locating_a_problem#Remove_components]]: if a very low or zero raw signal changes to the expected values (see [[Raw signal]] the problem is the chamber assembly.
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| : Otherwise follow [[Locating a problem]]
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| : If the problem is not located on the [[POS]] or the [[POS connector]] try solving the problem by reassembling the chamber before concluding that the [[main unit]] is defective.
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| '''Solutions'''
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| :* Disassemble the chamber by reversing the instructions in [[MiPNet19.18A O2k-Start]].
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| :* Check for visible damages on the [[glass chamber]], on the [[POS seal tip]] and all o-rings (on chamber holders or on stoppers). If damage is visible replace the part or consult OROBOROS Instruments. If there is a deposit visible in the glass chamber see [[Cleaning the glass chamber]].
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| :* Reassemble the chamber following exactly the description in [[MiPNet19.18A O2k-Start]]. In particular, use only small increments (not more than successive quarter turns of the POS holder) when lowering the chamber.
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| == Chamber volume calibration ==
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| : The volume calibration of the chamber is described in [[MiPNet19.18A_O2k-Start]]. | |
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| : Old model stopper: if you use blue Titanium stoppers: check the manual delivered with your O2k or contact OROBOROS INSTRUMENTS ([mailto:instruments@oroboros.at instruments@oroboros.at]) for instructions.
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| == Glass chamber stuck in the O2k ==
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| '''Problem'''
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| : After removing [[OroboPOS-Connector]], [[OroboPOS-Holder]], and [[O2k-Chamber Holder]] from the O2k , the [[O2k-Chamber]] cannot be removed. It remains stuck even after washing with water.
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| '''Solution'''
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| : The reason for this problem is very likely to be that medium has been spilled and is now acting now as an adhesive between glass chamber and copper block. Wash with plenty of warm water and try to remove the chamber while the O2k is switched on and heated up to 37 °C. You can try GENTLY to use the sensor holder (not the sensor connector) to try to push the glass chamber upwards (like you do during [[O2k-Chamber#Chamber_assembly|Chamber assembly]]) - while the O2k is warm and with plenty of warm water. With the sensors removed you can also try using a higher temperature, e.g. 40° C (or even slightly higher) for the washing / removing attempts.
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| [[Category:Technical service]]
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