The rotation of the sample holders (flip-flop) is controlled by a solenoid under the carousel - the PDF document includes instructions, diagrams and images to check if the solenoid is held in the right position.
WARNING: Any maintenance work undertaken on a James Heal instrument must be done so by a trained and competent person. Where electrical work is detailed, this should only be completed by a qualified engineer. James Heal is not responsible for damage or injury arising from work carried out by any person not qualified to do so. If in doubt, please contact James Heal or your local James Heal Agent.