Page 43 of 43
TVP Manual (full) March 2007 CE rev 03.doc
2.6 Decommissioning
Should it be necessary to remove the TVP from the vacuum system the following procedure
must be followed.
Warning
The refrigeration system contains a mixed blend of refrigerants and polio-ester oil. These do
not present acute health risks it is essential that the following basic precautions are followed:
(a) Always wear eye protection.
(b) Always wear surgical type gloves.
(c) Only fully trained personnel certified in the handling of refrigerants should
attempt to decommission any system containing refrigerants.
Warning
System contains specific hazards, which present a significant danger to personal safety;
(a) High pressure refrigerant gases, are a significant frostbite hazard.
(b) Refrigerant gases will cause asphyxiation followed by death in confined areas.
(c) Refrigerant gases, which if exposed to high temperatures decompose to form very
toxic by-products – never smoke in the vicinity of a TVP or any other similar
system including the gas cylinders.
Caution
There are strict regulations concerning the recovery and discharge of all refrigerants into the
environment. Penalties can be severe if decommissioning is carried out by untrained persons
or if release to the environment occurs.
• Run the system in standby mode until the unit reaches a stable value for SP.
• Then close all hand valves. This means ensures that 90% of the refrigerant which is
resident in the cryo-coil and lines is recovered back to the TVP.
• Residual gas in the lines must then be reclaimed via the access hand valve to an
empty reclaim cylinder using an oil free refrigerant reclaim unit. Care should be taken
to not contaminate the reclaimed gas with air.
Note
The reclaimed gas may then be used when the system is reinstalled during the balancing
procedure previously described.
To Next Page
Loading...