Energetics Science, Series 2000 Ecolyzer, Carbon Monoxide Monitor

Unit is being offered as is.  I plugged the unit in and turned it on.  The unit energized, the pump runs and the unit seems to be working.  Unable to check calibration or actual ability to detect carbon monoxide.   

Includes Rustrak strip chart recorder, as shown. 
The calibration gas bottle is not included. 
The instruction manual not included.  
The recorder output banana plugs on the front right side of the unit have been slightly bent.  This could be easily fixed.