– 18 –
CAUTION:
Do NOT apply excessive force or use a sharp object in an attempt to
unblock a clogged channel as the endoscope channel could become
damaged. Whenever channel damage is suspected, the endoscope should
be leak tested.
If repeated attempts to flush the air/water system are unsuccessful, do
not attempt to use the endoscope on a patient.
Contact the PENTAX service facility.
h) If the air/water feeding valve does not function properly, does not move smoothly
or feels “sticky”, remove the valve and apply a very small amount of silicone oil
lubricant (OF-Z11) onto all the O-rings. Do NOT use excess oil, avoid “blobs”,
large drops and/or squirts of oil directly onto the metal valve stems - instead,
simply place a small droplet of oil on one’s sterile gloved forenger and gently
swirl between thumb and forenger. Next place the valve with O-ring in-between
thumb and nger and gently rotate the valve so that the oil is evenly applied to
the outer edges of each O-ring. Make sure the oil is applied to all O-rings and
wipe off all excess.
Do NOT apply excess oil. Doing so can allow for inadvertent migration of the
oil inside channels or other areas not intended to be lubricated.
NOTE:
Prior to clinical use, it is important that the entire air channel system be
dry. Failure to thoroughly dry the air system could result in an unclear or
blurry image caused by very fine droplets of moisture being swept over
and/or onto the objective lens at the distal end of the endoscope.
5) Inspection of Water Jet (Endoscope with water jet system)
a) Prior to use, the water jet check valve adapter (OE-C12) should be inspected.
Open the water jet connector cap (OF-B118). Turn the water jet adapter
counterclockwise and remove it from its cylinder. Make sure that the black
check-valve (OE-C14) is properly attached to the bottom of the water jet check
valve adapter.
If the check-valve is missing or not attached properly, correctly reposition the
check-valve by turning it several times on the water jet adapter unit.
For proper positioning, there should be no clearance (gap) between the check-
valve and the water jet check valve adapter stem.
(1) OE-C12
(2) OE-C14
Figure 2.11
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