A-Dec 3420 Operation And Maintenance Instructions - page 14
A-dec Syringe Tips
Changing the Syringe Tip
To remove the A-dec syringe tip, pull it straight
out of the syringe tip retainer assembly (see
Figure 30).
To ensure that the syringe will perform properly,
it is important that you install the tip correctly.
Push the syringe tip into the syringe tip retainer
assembly. As you push the tip in you will feel
two “clicks” as O-rings inside the syringe tip
retainer assembly slide into the grooves. If you
do not feel two “clicks” when installing the
syringe tip, do not use the syringe. The O-rings
inside the syringe tip retainer assembly are
damaged and may allow the syringe tip to be
ejected. The syringe tip retainer assembly must
be repaired before using the syringe.
When properly installed, none of the grooves on
the A-dec syringe tip are visible (see Figure 31).
After installing a tip, point the syringe at the
floor and press the air button several times to
be sure the tip is properly installed.
An improperly installed A-dec syringe tip allows
water to enter the air tubing in the syringe tip.
Syringe and Tip Asepsis
All syringe tips are considered critical items and
must be heat sterilized between patients. The
syringe and syringe tips have been designed to
be heat sterilized.
Pre-Cleaning
1. Remove the syringe tip from the syringe tip
retainer and remove the syringe head from
the syringe terminal (refer to Disconnecting
the Syringe Head on page 9).
2. If the threads on the syringe head appear
dirty, gently brush the threads free of debris
using a nylon or brass bristle brush.
3. Remove the syringe tip for sterilization.
4. Immerse the tip in an appropriate holding
solution until ready for ultrasonic cleaning.
5. Clean the syringe tips ultrasonically. Follow
the instructions provided by the manufac-
turer of your ultrasonic cleaning equipment.
6. Purge all cleaning agents from the syringe
and syringe tips.
Sterilization
1. Rinse the syringe and syringe tips
in clear water.
2. Use a dispensing bottle to flush isopropyl
alcohol or Harvey’s Vapo-Steril® through
the tips.
3. Sterilize the syringe tips and/or syringe.
• Sterilize syringe tips using the methods of
steam autoclave or chemical vapor (275°F
[135°C] maximum temperature), or dry heat
(340°F [170°C] maximum temperature).
• Sterilize the syringe using the methods of
steam autoclave or chemical vapor
(275°F [135°C] maximum temperature).
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85.0681.00 Rev J
Figure 30. Changing an A-dec syringe tip.
New tip has three
grooves and an
A-dec “a” marking
WARNING
When ultrasonically cleaning syringe tips
do not use cleaning solutions, which con-
tain ammonia or amines.
These chemicals can be harmful to the
brass syringe tips and can cause possible
damage and tip ejection.
Figure 31. Installing the A-dec syringe tip.
No grooves are
showing. this tip
is properly
installed.
A groove is showing.
This tip is improperly
installed.
Correct
Incorrect
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