7
o
Perating
i
nStructionS
for
b
ulk
l
iquid
S
yStemS
“push – pull” procedure
The push – pull method removes bulk liquid from a system using the pressure differential created by the
recovery machine. This method works only with large systems where the liquid is readily accessible; it may
not work on systems that contain less than 15 lbs. bulk liquid.
This method is used :
on systems with receiver cylinders.
•
on systems containing more than 20 lbs. of refrigerant.
•
when transferring bulk liquid refrigerant from one cylinder to another.
•
liquid Recovery
Outlet Fitting
vapor
Inlet
Fitting
liquid
system Being
serviced
sight
Glass
liquid
scale
WARNING : Manually close the valves on both
the storage cylinder and the RG6000 unit to prevent
overfilling the cylinder. Once the siphon is started, it
can overfill the storage cylinder, even if the cylinder
is equipped with a float level sensor. The siphon can
continue even when the machine is turned off.
Filter/drier
Recovery
Cylinder
vapor
1. Place the RG6000 unit on a flat, level surface.
2. Connect a hose from the outlet fitting of the unit
to the vapor port on the system being serviced.
3. Connect a hose from the inlet fitting of the unit
to the vapor port of a recovery cylinder. Promax
recommends using a filter / drier in this line.
4. Connect a hose from the liquid side of the
recovery cylinder to the liquid port of the
system being serviced. Promax recommends
using a sight glass in this line as a method of
determining when the liquid has been removed.
RG6000-KT only:
Attach tank connection
harness (No. 549977) to float switch connection
on the recovery cylinder.
5. Place the recovery cylinder on a scale (such as
TIF9010A) to avoid overfilling the cylinder.
6. Verify inlet and outlet valves on unit are closed.
7. Turn the recover / purge knob to RECOVER.
8. Open the recovery cylinder valves.
9. Open the outlet valve on the unit.
10. Toggle the power switch ON.
11. SLOWLY open the inlet valve on the unit.
12. When the weight reading on the scale stops
increasing, close the inlet valve on the unit
first; then close the liquid valve on the recovery
cylinder.
13. Toggle the power switch OFF.
14. Close the valves on the recovery cylinder, and
close the outlet valve on the machine.
15. Proceed to Vapor Recovery
.
Float switch
Connection
(RG6000-KT only)