Polycold Cryochiller Installation
Installation and Operation Manual Install the Refrigerant Lines
Brooks Automation
214072 Revision B 4-25
5. Tighten the nut no less than ¼ turn until resistance increases sharply and no further tightening
occurs. The metal o-ring will be crushed into the o-ring groove. Tighten each coupling to 54-80 Nm
(40-60 pound-foot).
NOTE: The Parker fittings are coupled and sealed based on mechanical displacement of the
threaded parts, which results in compression at the sealing surface. Torque values are pro-
vided for customers requiring a measurable value.
6. Go to the Installation Checklist Table 4-1 on page 4-2. Initial and date this task. Go to the next task
on the checklist.
Install Cajon VCR Couplings (Optional Fitting)
1. Place a new gasket into the female nut.
2. Assemble the components and finger-tighten the coupling.
3. Use both wrenches to tighten each coupling no less than ¼ turn until resistance increases sharply
and no further tightening occurs, approximately 54-80 Nm (40-60 pound-foot).
NOTE: The Cajon fittings are coupled and sealed based on mechanical displacement of the
threaded parts, which results in compression at the sealing surface. Torque values are pro-
vided for customers requiring a measurable value.
4. Go to Installation Checklist Table 4-1. Initial and date this task. Go to the next task on the checklist.
Figure 4-19: Cajon VCR Coupling (optional fitting)
Female Nut
Gland
Sealing Surfaces
Silver Plated Stainless Steel Gasket
or Unplated Nickel Gasket
Male Nut
Gland
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