Installation Polycold Cryochiller
Check the Refrigerant Line and Cryosurface for Leaks Installation and Operation Manual
Brooks Automation
4-30 214072 Revision B
11. If the pressure in the manifold has decreased below 1030 kPa (150 psig), use leak detector soap
and an inspection mirror to locate the source of the leak.
12. If a leak is found, correct the leak using one of the steps below and retest:
• To correct a leak on a Parker UltraSeal compatible or Cajon VCR coupling, follow the steps in
Correct a Leak in a Parker UltraSeal Compatible or Cajon VCR Coupling on page 4-31.
• To correct a a leak on a brazed joint or a valve, contact Brooks Service for assistance.
13. If no leaks are found, verify the manifold pressure is still 1030kPa (150 psig).
14. If the pressure in the manifold stays at 1030 kPa (150 psig), follow these steps:
a. Close the valves on the manifold.
b. Disconnect the equipment from the manifold, but leave the manifold connected to the evac-
uation valve on the refrigeration unit.
15. Go to the Installation Checklist Table 4-1. Initial and date this task. Go to the next task on the check-
list.
Chemical Hazard
The blend of refrigerants used in the Polycold Cryochiller is non
flammable and non toxic. However, as with any gas, asphyxiation
could occur if concentrated refrigerant gas is inhaled.
• Service the Polycold Cryochiller in a well ventilated area.
• Never add refrigerant to a unit with a leak. Locate and repair any
leaks prior to adding refrigerant or re-charging.
Figure 4-23: Leak-Checking Couplings
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