A demineralized water with
chemical substances has been
used.
Organic or chemical residues
on the instruments.
Different materials in contact.
Calcareous residues on the
chamber surface.
Empty the charge tank and fill it with different
type of water demineralized through not
chemical process.
Wash all the instruments by means of ultra-
sonic cleaner and rinse them with demineral-
ized water before placing them on the tray.
Separate the different material with fabric
cloths.
Clean the chamber according to the mainte-
nance procedures.