VWR 5700 Series, Operating And Maintenance Manual

Page: 33 / 90

5-2 ULT Freezer VWR International
Section 5
Factory Installed Options
5. Go to the interior and seal around the injection assembly with
Permagum.
6. Install the transfer hose connecting one end to the injection assembly,
the other end to the solenoid valve. Install the solenoid valve to the
supply source. The solenoid mounting bracket is not required and may
be discarded.
Note When selecting a CO
2
supply cylinder, it must be equipped with a
siphon tube.
s
1. Plug the solenoid/probe connector into the BUS connection. Loop the
probe wire back into the base/side car. Secure the connector with a
screw on the ends of the connector. The connector is keyed.
2. Route the temperature probe through the probe port. The probe port is
located in the upper right corner (viewed from the side) of 12.7 and 20
cu. ft. models, and in the lower right corner (viewed from the back) of
3.0 cu. ft. models.
3. Carefully remove the existing Permagum sealant from around the probe
port opening.
Figure 5-2. Injection Assembly
Install Temperature Probe
Figure 5-3. Probe and Solenoid Connections
Install Injection Assembly
(continued)