SF AllVac Commercial, Установка, эксплуатация и обслуживание, Страница: 14 / 36

14 RRGA-SVX01A-EN
At this point, the microprocessor continues to monitor chiller pressure.
Should pressure rise, AllVac restarts to again achieve the user-selected
vacuum.
35.Then the display will read “Chiller Vapor Recovery Finished! press
Enter”.
Upon pressing “Enter”, AllVac prompts you to perform the following valve
manipulations 36 - 42:
Note 5: Close additional liquid access valve at this time, if being used.
“Close Both Service Access Valves on Chiller” then press ”Enter”.
36. “Close Both Hand Valves on AllVac Unit Chiller Side” press “Enter”.
37.AllVac compressor then restarts and begins to force remaining liquid in
AllVac as well as liquid in hose into the recovery tank. Displaying “ Liquid
Refrigerant Clearing in Process”.
38. “Close Both Liquid & Vapor Hand Valves on Recovery Tank” press
“ Enter”.
39.AllVac then begins evacuating the recovery tank vapor hose, displaying
“Hose Evacuation in Process”.
40. “Close Both Liquid & Vapor Tank Hand Valves on AllVac unit” then
press “Enter”.
41.Finally, the unit displays “Chiller Recovery Completed! Disconnect all
Hoses and Power”.
At this time, close all four refrigerant hose isolation valves located on the
ends of the refrigerant hoses connected from AllVac to the recovery tank.
There will still be a small, residual amount of refrigerant in AllVac. This
amount must be removed if you want to change to a different type of
refrigerant. An explanation on how to remove this residual amount of
refrigerant is described in next paragraph.
Removing Remaining Residual Refrigerant
a) Connect the center tap of a manifold set to a suitable vacuum pump inlet
and discharge side of pump to an 50 lb. evacuated recovery cylinder. Con-
nect the low & high side of the manifold set to the 1/4” compressor suction
and discharge access ports located on the side of AllVac
unit.
b) Open valve on 50 lb. recovery tank and turn on the vacuum pump. Open
the low & high side manifold valves and wait until a 29” vacuum has been
achieved on your manifold gauge.
c) Close both manifold valves, shut down vacuum pump and close recovery
tank valve. If you intend to use AllVac on a different type of refrigerant,
make sure to change compressor fluid and disposable driers.
Operation