Telemark TVP-2000 - Page 25

Page 25 of 25
TVP Manual (full) March 2007 CE rev 03.doc
2.08 Refrigeration line fitting instructions for Parker connection
Inspect and clean all coupling faces. Ensure they are free from dents or scratches. Small
imperfections on the Parker fittings of the refrigerant lines may be rectified by using 1200
grade wet or dry mounted onto a glass plate. Special care needs to be taken when handling
Swagelok VCR fittings. It is critical that the faces are totally flat and square. Always purge
lines through with dry nitrogen to prevent contamination of lines. When using the 1200 grade
wet or dry ensure the abrasive pad is always dry.

It is recommended that the connections on the cryo-coil are Parker Male couplings (i.e. Those
with the ‘O’ Ring groove) as these are more delicate than the female, flat face seal, half of the
coupling.
Position the refrigerant lines to suit the installation. Bend the refrigerant line as necessary.
The minimum bend radius is 12 inches (300mm). Ensure at least 5 inches (150mm) of
straight line runs to the TVO unit and to the feed-through coupling.
CAUTION
1) Do NOT repeatedly bend the refrigerant line; this will cause leakage and or breakdown
of the insulating materials
2) Always attach the refrigerant line to the feed-through coupling.
3) Always use the o-ring removal tool, which is supplied in your tool kit when removing an
“O-Ring”.
It is vital that a new o-ring is used every time a connection is made or broken. Always use the
o-ring removal tool, which is supplied in your tool kit when removing an “O-Ring”. Take care
not to damage mating surfaces of the connections.
Diagram 12 Parker O ring removal tool
It is our recommendation that Parker fittings are fully tightened