Waters 717plus - Installing a New Seal Pak; Installing the Injector

Replacing the Seal Pak 139
5
2. Pull the needle down.
3. Rotate the motor drive shaft until the needle mounting block is as high as it can go.
4. Orient the needle port toward the left side of the injector (Figure 5-8
). Identify the left
side of the injector by the position sensors on the support bracket.
5. Slide the compression screw and ferrule onto the end of the needle.
6. Push the needle into the needle mounting block until it is firmly seated. Tighten the
compression screw hand tight.
7. Check the orientation of the needle port. Ensure that it is still facing the left side of
the injector assembly, and use the 5/16-inch wrench to tighten the compression
screw no more than 1/4 of a turn.
5.3.4 Installing a New Seal Pak
To install the new seal pak:
1. Moisten the seal with MeOH/H
2
O solution.
2. Slide the seal pak over the end of the needle and attach it to the bottom of the
injector with the four screws.
3. Connect the outlet line from the union fitting to the port on the left side. Tighten the
connections 1/4-turn after making a finger-tight connection.
4. Connect the inlet line (with in-line filter) to the port on the right side. Tighten the
connections 1/4-turn after making a finger-tight connection.
5. Connect the needle wash lines.
5.3.5 Installing the Injector
To install the injector:
1. Lower the injector into the base, fitting the guide pins in place.
2. Attach the injector to the floor of the compartment by tightening the three mounting
screws.
3. Connect the two needle wash lines.
4. Connect the outlet tubing (red line) to the union at the base of the injector.
STOP
Attention: Hold the needle only at the upper end (away from the needle
port). Use a clean wipe and 100% methanol to clean the needle after
installation.
STOP
Attention: Be sure that the needle wash tubings are not pinched between
the injector and the base.