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There are no written instructions. The Quick Draw simply snaps on and off the retaining ring that must be permanently installed on the Alco-Sensor III. For instructions on how to install the mounting ring follow the below link. The Quick Draw can be disconnected to allow a traditional mouthpiece to be attached again.
If the fuel cell sensor is several years old, the slowness is likely due to the age of the cell. If the fuel cell still consistently produces accurate results on accuracy checks, it is not necessary to replace it, but if speed in performance is critical, replacing the fuel cell will make the instrument perform as new.
Try a new battery, but if the battery is not dead or disconnected, it is likely that a Reed Switch has been broken and needs to be replaced. This is a factory repair – click the link below for information on sending your device to our Technical Services department.
If your Alco-Sensor III has a serial number less than 1200000, this display message indicates that the A/D converter has likely gone out and needs to be replaced by a factory technician.