Prevention of Vacuum for Low Pressure Chillers
Low pressure chillers using R-11, R-123, R-123zde go into a vacuum when idle. This causes air and moisture to enter the chiller. Air inside a chiller can cause hard start ups and surge. Moisture in a chiller can combine with the refrigerant in the unit and cause acid to form, leading to costly repairs and problems.
The PREVAC System
Protecting Your Investment and Your Bottom Line
Chillers are expensive...
It makes sense to get the most out of them. You do preventative maintenance such as oil changes, tube cleaning, etc. PREVAC adds another layer to passive preventive maintenance, giving you the peace of mind that you are maximizing your equipment lifespan.
Facility downtime is even more costly...
Maintaining the chiller in peak performance is crucial to facility operation – whether it’s for tenants, data storage or industrial processes. PREVAC prevents costly downtime by preventing surge, extending equipment life and streamlining service.
Prevention of Vacuum
The Problems:
Low pressure chillers enter a vacuum when they are idle, causing air and moisture to enter the chiller. This can cause a variety of problems:
- Air in the system causes hard startup and surging
- Moisture creates acid buildup, jeopardizing internal components and refrigerant.
- Excessive use of the purge unit, shortening its lifespan
The Solution:
Prevac pressure seals a chiller at 0.00 psig, preventing it from going into a vacuum during idle periods. This prevents air and moisture from entering the system. This will:
- Prevent chiller downtime
- Prevent refrigerant contamination and acid damage
- Eliminate hard startups and surge and improve reliability
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