Taylor-Wharton Liquid Withdrawal Device - Manual (Page 2)

Installation
1. Remove the necktube cap/core from the Dewar.
2. Remove 3 flat-head mounting screws in the base of
the plastic trim collar around the neck of the Dewar,
remove the collar and discard or save for later. It is not
used while the LWD is installed.
3. The liquid withdrawal tube (the longer of the two plastic
tubes) is scored approximately 6 in. (152 mm) from the
end. This tube must be shortened for use with a LD25
or LD35 Dewar by breaking off the 6 in. (152 mm)
section. Discard the 6 in. (152 mm) piece. The tube is
used as supplied with the LD50.
4. Insert the longer plastic tube into the underside of the
flange assembly, beneath the LIQUID valve. Insert the
shorter plastic tube into the threaded fitting on the
underside of the flange assembly, beneath the VENT
valve. Tighten the compression nuts with a wrench to
secure.
5. Position the safety cable assembly around the top of the
Dewar, underneath the flange. Loosen V-Band Clamp
until the clamp is large enough to remove from the
LWD. Drop the band clamp around the flange on the
Dewar (see Figure 2).
6. Clean the flange O-ring and apply a thin layer of silicone
grease before placing it on the grooved flange.
NOTE: Be sure flanges surfaces are warm, clean and
dry. The O-ring must be cleaned and lightly lubricated
before installing the LWD.
7. Carefully lower the LWD unit into the Dewar. The LWD
should rest firmly centered on the neck flange of the
Dewar; the liquid withdrawal tube should not touch the
bottom of the Dewar.
8. Place the band clamp around the flanges of both the
LWD unit and the Dewar. Be sure that the clamp is
properly engaged on both flanges. Tighten the clamp –
hand tighten only.
9. Attach the snap of the safety cable to the ring on the
LWD (see figure 2).
10. If the spout assembly is to be used, install it on the
outlet fitting above the LIQUID valve. The phase separa-
tor will ensure a controlled flow of liquid.