The complaint device was returned.Device evaluation identified that the top case damaged and the bottom case locking cam was broken.The error log showed solenoid 1 and 2 failure, and the lamp was only reading co2 up to 4.7.The unit was ran for 28 hours confirming the intermittent connection and failure to zero out.The pump outlet filter, lamp, locking cam, top case, and rs232 cable were all replaced.The unit was tested for 24 hours showing that the solenoid issue 1 and 2, connection, and zero issues resolved.The root cause was determined to be the micron filter and rs232 cable.As the pump is ran shavings from pump are caught purposely by micron filter causing it to fill up over time.The rs232 cable showed normal wear and tear due to long run hours.This type of event will continue to be monitored.
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