Polycold Cryochiller
Appendices
Installation and Operation Manual
Appendix G: Zero Line Loss Procedure
Brooks Automation
214072 Revision B
12-13
Appendix G: Zero Line Loss Procedure
This procedure is used to pull the refrigerant into the Polycold Cryochiller in order to evacuate the exter-
nal refrigerant lines to repair a refrigerant line leak. This procedure is also found in “Service Procedure,
Zero Line Loss, Polycold Cryochiller”, p/n 185307
Procedure
Item Description
Electrical Category
Type 2 - Equipment is energized. Energized circuits are covered and insulated.
Tools and materials:
Standard Hand Tools
Open end wrenches or adjustable wrenches as required
1 1/16 inch Crow foot wrenches or deep socket wrenches as required
Service menu authorization access code
One of the three manifold selections listed below
•
Service Bypass Line with hand valve, pressure gauge, and (1) 1/4” T adapter
and (2) 1/4” evacuation lines
•
Three-Port Refrigeration Manifold, a ¼” Tee adaptor, and (4) ¼” evacuation lines
•
Four-Port Refrigeration Manifold and (3) ¼” evacuation lines
NOTICE
Untrained or improperly equipped personnel performing this procedure may cause
damage to the equipment.
•
Only Brooks Automation, Polycold Division, trained personnel should perform
this procedure.
•
Personnel performing this procedure must read and understand this proce-
dure, the Safety chapter of the Polycold Cryochiller Service Manual, and have
the proper tools and supplies ready before starting.
•
Personnel performing this procedure must know the applicable regulatory and
safety codes, facility safety procedures, safety equipment, and contact infor-
mation.
Step
Action
1.
Set the Polycold Cryochiller to Defrost Mode
2.
Wait for the Polycold Cryochiller to complete the Defrost cycle and indicate that defrost is compete
with the Standby and Heat indicators illuminated.
