Pentax EG-2990i Instructions For Use Manual page 24

WARNING:
The check-valve OE-C14 is a reusable component and it as well as the OE-
C12 check valve adapter, water jet cylinder, irrigation tube and water jet
channel should be reprocessed after each use.
Make sure that the check-valve OE-C14 is securely attached to the check
valve adapter OE-C12.
A worn or damaged check valve should be replaced with a new one which
has already been subjected to a high level disinfection or sterilization
procedure (Check valve set, model OE-C15 which contains 10 pieces of
OE-C14 is optionally available).
For repeated use, always ensure that the valve has already been
reprocessed. A damaged, worn or missing check-valve could create a risk
of cross-contamination to the end user due to the potential for reflux (spit-
back) of patient fluids through an unsealed path if the check-valve is not
attached properly.
b) Attach the water jet check valve adapter (OE-C12) and water jet connector cap
(OF-B118) opened and then irrigation tube (OF-B113) to the water jet port on
the (PVE) connector.
c) Attach a syringe filled with sterile water to this tube and flush water through the
tube. Water should flow in a steady and forceful stream from the water jet nozzle
at the distal end of the endoscope (this may take several seconds on the initial
attempt).
Figure 2.12
d) Use only sterile water in the water jet system.
e) If water does not flow properly, the following steps should be followed:
[1] Attach a syringe filled with a compatible cleaning detergent solution to the
irrigation tube.
[2] Flush solution through the tube and nozzle. Soaking of the water jet channel
with detergent solution should help dissolve and dislodge whatever is
restricting the normal forceful stream from the water jet nozzle.
[3] Remove the syringe containing detergent solution and attach a syringe with
air. Purge the channels with air and then rinse the air and water channel(s)
with sterile water. Then, flush air through the irrigation tube and nozzle
several times to remove any residual solution from the tubing and nozzle.
(1)
(2)
(3)
– 19 –
(1) Water Jet Connector
Cap (OF-B118)
(2) Irrigation Tube
(OF-B113)
(3) Water Jet Check Valve
Adapter
(OE-C12)