Polycold Cryochiller Appendices
Installation and Operation Manual Procedure
Brooks Automation
214072 Revision B
12-17
11. Turn on the cryochiller.
Set the system control mode to Local. The Remote LED is OFF when system control is set to Local.
12. Use the HMI keypad and follow the steps to select the ZERO LINE LOSS function.
• From the Main Menu, navigate to the SERVICE MENU selection. Press the Enter key to
select.
• Navigate to AUTHORIZATION CODE. Press Enter.
• Input the LEVEL 3 authorization code to access the function.
• A menu of service options appears.
• Scroll down to ZERO LINE LOSS. Press Enter.
• Scroll down to CONTINUE. Press Enter.
13. Turn on the compressor by the turning the Compressor On/Off toggle switch to On.
14. Open the Evac Ckt 1 hand valve for the refrigerant lines to be evacuated.
15. For Service Bypass Line:
• Slowly open the hand valve on the service bypass line to bleed the pressure.
• After the pressure equalizes, fully open the valve.
For a standard Three-Port Refrigeration Manifold
• Slowly open the High Pressure Hand Valve on the manifold to bleed in the pressure.
• After the pressure equalizes, fully open the valve.
• Repeat this process for the Low Pressure Hand Valve.
For a Four-Port Refrigeration Manifold:
• Slowly open the High Pressure Hand Valve on the manifold to bleed in the pressure.
• After the pressure equalizes, fully open the valve.
• Repeat this process first for the Vapor Charging Hand Valve and then for the Low Pres-
sure Hand Valve.
16. Purge the line connected to the Low Pressure Service Suction Port by loosening the fitting
(~1/4-turn) just enough to hear gas escape for approximately 2 seconds and then retighten the fit-
ting.
17. Turn the compressor suction service valve fully in to the front seated position to open the compres-
sor suction to the evacuation line.
18. Continue with the vacuum extraction until the compound pressure gauge reads 15 inches mercury
(50.8 kPag) (7.36 Psig) or lower.
Step Action
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