A: Nozzle is partially blocked with dried medium Release the nozzle as described in the operator’s manual, clean it (needle) and thoroughly soak/rinse it in xylene for a few hours.
A: Suction cups may be dirty, faulty or deformed. This may result in the coverslips not being placed properly and may also lead to the formation of bubbles.
Check the integrity and cleanliness of the suction cups. If necessary, clean suction cups with a tissue moistened with xylene and dry them for approx. 1 hour before re-installing.
A: Nozzle is off center
Visually check if medium is applied right along the center of the slide. If this is not the case, ask your Leica Service engineer to re-adjust the nozzle.
A: Media volume setting may be incorrect, i.e. too low
Try increasing the volume and run a few samples for checking.
A: Working pressure (on the media bottle) is not kept constant
This can only be checked by a Leica service engineer and may be necessary if all of the above remedies do not give satisfactory results.
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