Teledyne ACCQPrep HP125 Installation And Operation Manual page 23

Figure 2-11 Keep liquid level lower than the top of the
system
2. ELSD operation requires a carrier gas. To connect the car-
rier gas to the ACCQPrep:
1
• Locate the / inch O.D. FEP tubing (PN:023-0503-02)
8
from the accessory package.
• Push one end of the tubing into the NITROGEN INLET
(Figure 2-9) port on the back of the system. The tubing
should be fully seated in the port.
• Cut the tubing to length and connect the other end to
the user-supplied carrier gas. An assortment of
adapters are supplied in the accessory kit to complete
the connection to your gas source.
3. The P-trap must be filled with fluid to prevent sample loss.
To accomplish this, raise the drain tubing attached to the
P-trap drain vent assembly above the instrument and
place 10 mL of liquid, such as isopropyl alcohol, into the
tube. Make sure the fluid level in the tubing doesn't exceed
the level of the instrument case top. If the tubing is raised
too fast, fluid may flow out the top of the vent tube causing
a spill. Lift it high enough so the fluid enters the P-trap
drain (Figure 2-11).
4. Route the end of the P-trap drain tube to a suitable waste
fluid collection container. Please be aware that as the tub-
ing is lowered, several mL of isopropyl alcohol will run out
of the tubing. This is normal and means that the P-trap is
properly filled. Depending on your application, the P-trap
fluid may need periodic replenishment to ensure maximum
signal strength of the ELSD.
ACCQPrep HP125
Section 2 Installation
1
/ inch
8
P-Trap drain vent
assembly drain line
2-7