PerkinElmer OilExpress System, User Manual

Page: 80 / 102

80 . OilExpress System User's Guide
Replacing the Syringe Seal
The syringe seal will need to be replaced periodically. How often will depend on the duty
cycle of the pump, the type of fluids being run through the system, the size of the syringe
and how well the instrument is maintained. If the syringe seal becomes worn and is not
replaced, the following problems may occur:
•
Poor precision and accuracy.
•
Variable or moving air gaps.
• Fluid leaks from the bottom of the syringe.
• The tip of the plunger breaks through the seal and scratches the inside of the syringe
barrel. If this happens, the entire syringe will need to be replaced.
Replacing a Syringe
1. Refer to Installing the Syringe on page 50.
2. Remove the plunger pin at the base of the syringe plunger.
3. Release the syringe clamp and carefully unscrew the syringe barrel from the Luer lock
fitting (about 1½ turns) while pulling downward slightly. Then slide the syringe plunger
from the plunger shaft.
4. To install a syringe, place the plunger over the plunger shaft. Line up the barrel with the
Luer lock fitting. Screw the barrel onto the fitting while pushing upward slightly.
5. Replace the plunger screw at the base of the syringe plunger.
Replacing the Reagent Syringe Seal
1. Refer to
Installing the Syringe
on page 50.
2. Remove the plunger pin at the base of the syringe plunger.
3. Release the syringe clamp and carefully unscrew the syringe barrel from the Luer lock
fitting (about 1½ turns) while pulling downward slightly. Then slide the syringe plunger
from the plunger shaft.
4. Remove the syringe plunger.
CAUTION
You must assist the Luer lock threads by pushing upward, otherwise they
may become stripped.