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EXTREMELY IMPORTANT
ALWAYS
connect the yellow hose to the tank of new refrigerant (Step 1)
BEFORE
connecting the other end to the port on the RHS780 (Step 2).
Yellow Hose
30 inch
Blue Hose
NOTE:
for clarity
Not Shown
Refrigerant
New
Up Side
Down
Anti-blowback
Valve
Filling Internal Cylinder
The RHS780 has an internal cylinder with a maximum capacity of 17.5 lbs. Refrigerant is recovered from A/C systems,
filtered and stored in this cylinder. This refrigerant is then available for charging into A/C systems.
Typically, it is also necessary to add new refrigerant to the internal cylinder. The RHS780 will transfer refrigerant
directly into the internal cylinder from a tank of new refrigerant.
FIRST TIME SETUP
The RHS780 is shipped from the factory without refrigerant. The following steps must be followed to transfer new
refrigerant into the internal cylinder.
1. Begin with preferably a full tank of new refrigerant. Connect the end (A) of the 30 inch yellow hose to the port on
the tank of new refrigerant. Turn tank of new refrigerant up-side-down.
2. Connect the anti-blowback valve end (B) of the 30 inch yellow hose to the fill port on the side of the RHS780.
3. Plug in power cord and press top of power selector switch. The display will show
WEIGHT = XX.X LB -
AUTOMATIC?
4. Press [
_
] key four times. The display will show
WEIGHT = 00.0 LB - FILL CYLINDER?
.
5. Press
[ENTER]
key. The display will show
CHECK HOSES - START?
.
6. Open valve on tank of new refrigerant.
7. Press
[ENTER]
key. Refrigerant will transfer from the tank of new refrigerant into the RHS780 internal cylinder.
The display will show the weight increasing in the internal cylinder and display
WEIGHT = XX.X LB -
COMPRESSOR ON
. The display may periodically show
HIGH PRESSURE - SEE MANUAL
. This is normal and
part of the fill cylinder procedure.
8. Two options are available to control the amount of refrigerant transferred into
the internal cylinder:
(A)
Press
[RESET]
key when the desired amount is displayed.
(B)
Let the process continue until the internal cylinder fills to about 13 lbs
and stops automatically. The Attention Light will illuminate.
The display will show
FILL COMPLETE - FILLED = 13.0 LB
.
Press
[ENTER]
.
9. Close valve on tank of new refrigerant.
10. Disconnect yellow hose from RHS780.
11. Put plastic cap on fill port of RHS780.
