Installation
Polycold Cryochiller
Install the Refrigerant Lines
Installation and Operation Manual
Brooks Automation
4-22
214072 Revision B
feed-through, Polycold recommends eliminating these fittings and brazing the tubes together.
If brazing the lines cannot be done, use only approved fittings and support the tubing within
300mm (12 inches) of each side of the intermediate fitting.
2.
Inspect the sealing surfaces of the couplings for the following:
•
Dirt and foreign material
•
Scratches
•
Dents
3.
Clean the sealing surfaces of the couplings.
If the sealing surfaces are scratched or dented, contact the Brooks Automation Polycold Service
Department.
NOTE:
Parker UltraSeal compatible couplings are standard on all Polycold Cryochillers.
4.
Connect the refrigerant line to the cryosurface first, if possible.
Finger-tighten the refrigerant line couplings to the feed-through couplings.
5.
Remove the upper-right front panel of the
refrigeration unit.
6.
Locate the isolation valve box which is the
box just below the refrigerant line couplings.
7.
Remove the upper right panel on the front of
the Polycold Cryochiller to expose the valve
box.
8.
Locate the hand valves in the isolation valve
box.
Hand valves are the manually operated valve
and have red handles.
A unit may have up to 4 hand valves, depend-
ing on the configuration.
See
for valve locations.
9.
Close each of the hand valves by turing them
clockwise until they are firmly closed.
NOTE:
The isolation valves are used to hold
the refrigerant mixture in the refrigera-
tion unit during shipping or whenever
the cryosurface or refrigerant line is dis-
Figure 4-15: Cold Valve Box Showing Hand
Valves with Red Handles