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AdaptaPAK® Installation
Evacuation
The system should be able to hold a vacuum for 24 hours with no micron increase and no vacuum pump attached.
The vacuum should then be broken with refrigerant type used in the system from a factory filled cylinder. Always
follow acceptable industry practices and customer specifications when evacuating systems.
It is important to recognize that the evacuation process does not remove liquid water, but reduces pressure to the
point where liquid water boils into a vapor, which is then removed through evacuation.
Some things to consider when evacuating a system are:
•
Make sure all system valves are open so that the entire system receives a vacuum, and that no part of the
system is isolated from the vacuum.
•
Copper line is generally considered best for connecting vacuum pumps to the system.
•
Make multiple connections (depending on the size of the system, use more pumps) to the system so that
both the high-side and low-side have vacuum.
•
Always isolate the vacuum pump before shutting it off.
•
Always read the micrometer at the furthermost point of the system from the vacuum pump.
•
Make sure to change the oil in the systems as necessary during evacuation.
Fittings and Connections
All fittings and connections for components should be sweat type unless otherwise specified. For instance, a safety
relief valve of the proper pressure rating should be piped with a sweat (or in some cases, threaded) connection and
vented to the outside a minimum of 30 feet from all intakes, or per local codes, if more stringent. In the event that a
threaded connection is used, the proper thread sealant needs to be applied as determined by the type of refrigerant
and oil used in the system.
Job Installation
In addition to piping, installation includes a number of other steps that must be performed. These include
procedures to:
•
Set and install racks
•
Set and install condensers, cases, walk-ins and walk-in coils
•
Choose and install lines for circuit piping
•
Complete individual circuit piping inside cases, case-to-case, walk-ins and gas defrost
•
Complete piping for condensers and heat reclaim
•
Install drains for coils and cases
•
Label equipment
•
Install plan holders
Summary of Contents for Adaptapak ADP-M0000-L0032
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