Operating Manual WD 425E
Rev. 1.1, LS Page 12 of 34 78563_E rev 1.1.doc
In case of single endo-
scope processing, the
shown closure plug is
installed in the empty
endo box.
After inserting the plug,
close box cover.
Caution
In case a disinfection program is interrupted, the endoscopes are not properly disinfected. The program
must, therefore, be repeated.
Important
The seal system on endo box and coupling must be checked periodically. Also a mandatory check pertains
to the pressure chamber and its closure.
1.3.3 Leak Test for Endoscopes
During the wash phase, the test pressure is continuously monitored. Even the most minute deviations are
judged as errors and are shown on the display.
Leak test procedure:
Phase 1 - 4 are carried out prior to the first wash cycle and is performed without “water contact”.
Build-up of test pressure.
Setting phase: 10 seconds. Air disperses evenly within the endoscope.
Test phase. Holding inside pressure in the endoscope within a predetermined range at a predetermined
test pressure threshold. If target values are not attained, control system cuts off program. Display shows
error code 170 - 179.
Rinsing phase with endoscope protection: during the wash and rinsing phase, endoscope inside pressure
is controlled to always be above the external water pressure.
Venting phase: The endoscope is being vented.
1.3.4 „Manual“ Leak Test
If door is open (S110), the leak test may be initiated by pressing door key for 1 second. Instead of „Program
ready, door open“, display shows „Endoscope Leak Test“. The door key blinks for the duration of the test. In-
terruption of the test is possible only by means of the door key or with the IO button. If the leak test is deacti-
vated in the setup, this function is completely eliminated.
Endoscope Leak Test
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