MAHLE RTI Matco AC2880 - Manual (Page 21)

Page 19
TROUBLESHOOTING FILL CYLINDER PROCEDURE
1. The cylinder of new refrigerant should be at ambient temperature or greater for best
performance of the Fill Cylinder procedure. Make sure the cylinder was not recently moved
from an air-conditioned storage room to a warm work area. Place the cylinder on a block
of wood if necessary to elevate it from a cool concrete floor. Application of a heat belt to
the cylinder will greatly enhance the speed.
2. Verify that the cylinder of new refrigerant is up-side-down as shown in the figure on page
4 and that the cylinder valve is open.
3. If filling the Charge Cylinder from a DOT Cylinder, make sure the hose is connected to the
liquid port and the DOT Cylinder is right-side-up.
4. If the yellow hose was connected to the Fill Port the first time the AC2880 was used,
there may be excessive air in the AC2880 Charge Cylinder. At least 4 lbs. of refrigerant
must be recovered/recycled into the AC2880 Charge Cylinder following the
Recover/Recycle procedure on Page 6. During this process, the air in the AC2880 Charge
Cylinder will be automatically purged.
5. Verify that the cylinder of new refrigerant has liquid refrigerant in it by shaking the cylinder
or weighing the contents. A minimum of 4 lbs. of liquid is required.
6. Verify that the Yellow Hose is connected correctly from the
Cylinder to the Fill Port.
R12 Side (Port 8) ...
The Fill Port is equipped with a valve core. A Depressor
must be present in the end of the hose (see figure) closest
to the shutoff valve. This end of the hose with the shutoff
valve must be connected to fill port 8 on the AC2880.
The depressor in the hose may be adjustable, so extend the
depth of the depressor by using needle-nose pliers.
R134a (Port 7)
Make sure the end of the hose with the anti-blowback valve
is connected to fill port 7.
There may be a machine fault if the above steps do not result in a successful
increase of weight shown on the display after running the Fill Cylinder
procedure for a minimum of 15 minutes.
Contact RTI Technical Support at 800-468-2321 (Ext.259) for help.