Cooling The Recovery Tank - Inficon Vortex Dual 714-202-G Serie Manual De Funcionamiento

3.5 Cooling The Recovery Tank

Vortex Dual can be used to pre-cool (or sub-cool) the recovery tank, if the head
pressure is too high to complete the recovery process. If the ambient pressure
is too high, high head pressure can occur when working with certain
refrigerants that have a high vapor pressure.
NOTE: The recovery tank must contain five pounds or more of liquid,
to allow the pressure differential to develop.
Sub-cooling the tank before starting the recovery process may provide little or
no benefit.
If the recovery process stalls because of high head pressure, turn off
Vortex Dual, close the hose valves, and reconfigure the setup as shown
in Figure 4.
Figure 4 Setup procedure for sub-cooling method
LP HP
CLOSE
OPEN PURGE
FILTER
VAPOR
1
Rotate V2 on the Vortex Dual to RECOVER and open the LIQUID and
VAPOR valves on the cylinder.
2
Turn on Vortex Dual.
3
Rotate V1 on Vortex Dual to OPEN.
4
On the cylinder, throttle the flow of liquid by slowly closing the LIQUID
valve to achieve a minimum pressure differential of 100 PSIG (0.7 MPa,
7 bar) between the LP and the HP gauges.
NOTE: To prevent the HP cutoff switch from actuating,
do not allow the HP gauge to exceed 550 PSIG (3.8 MPa, 38
bar).
5
Once the recovery tank is cold, turn off Vortex Dual and reconfigure the
setup for standard recovery. Repeat as needed.
Vortex Dual Operating Manual
RECOVER
PURGE
OPTIONAL CONNECTION TO SYSTEM
LIQUID
CYLINDER/
CYLINDER/
TANK
TANK
SCALE
13