Tubing Adapter Fittings; Quick Disconnect Fittings - Thermo Scientific 1403 Series Operating Manual

Tubing Adapter Fittings

1. Completely disassemble the fitting. Refer to Figure 16 to familiarize yourself with the names of the
component parts.
2. Make sure the tubing is cut off reasonably square and that no plastic burrs or ridges are present.
3. Place the grab ring and back-up ring in the hex nut in the order and orientation shown in Figure
16. Thread the nut onto the adapter. DO NOT use the o-ring at this time.
4. Push the tubing through the nut until it bottoms out in the adapter.
5. Remove the adapter nut and tubing. Place the o-ring over the tubing. Be careful not to push the
back-up ring or grab ring further back on the tubing when installing the o-ring.
Figure 3-9 Typical Polypropylene Tubing Adapter Installation

Quick Disconnect Fittings

These fittings are found on the water inlet. To insert the inlet tubing:
1. Press on the metal thumb pad on the coupling body to ensure the fitting is open.
2. Wet the o-ring on the coupling insert and push into the coupling body until you hear a click.
Gently pull on the tubing to ensure it is secure.
3. To remove, press the metal thumb pad to release and pull coupling insert out.
Thermo Scientific
CAUTION Do not tighten tube fitting hex nut with a wrench. Tight connections can be
easily made by hand.
Installation
Quick Disconnect Fittings
TII Water System 3-5