43
Troubleshooting
Error symptom
Possible cause
Remedy
Corrosion, staining,
discolorations
Inadequate cleaning
(e.g., protein residue)
Clean again, rub thoroughly if
necessary
Inadequate rinsing
of the endoscope
between reprocessing
phases (especially
before sterilization)
Ensure adequate rinsing between
the reprocessing phases
Contaminated disin-
fectant and cleaning
solutions that are
used too frequently
Replace the disinfecting and
cleaning solutions at regular
intervals
Extraneous rust (e.g.,
from rusty steam or
reprocessing together
with damaged or
non-stainless instru-
ments)
Check supply systems; ensure
material compatibility during
common reprocessing, pay
attention to existing damage, and
avoid mutual contact
