Robinair ACR2005 Air Conditioning and Refrigerant Service Solution - Manual (Page 22)

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© 2004 Robinair, SPX Corporation
FLUSHING PROCESS
The ACR2005 provides a method of removing oil by forcing liquid refrigerant
through the A/C system or components of the A/C system. A special flushing
adapter, which is available as an accessory, accesses the system at the
compressor block. After flushing, the refrigerant is recovered by the ACR2005
and is filtered by the recycling circuit, returning it to SAE purity levels. A/C
system configurations vary, and may require the adapting and flushing of
individual components. The following procedure works with an orifice tube
system.
NOTE: The ACR2005 must have at least 7 lbs. of refrigerant available for
charging in the internal storage vessel.
1. Locate the ACR2005 MAIN MENU on the control panel, and press the
SCROLL MENU key. Press the OIL FLUSH key. Follow the on-screen
instructions.
2. Follow these instructions and consult any service bulletins as needed:
A. Recover refrigerant as described on page 16 of this manual. Verify the
ACR2005 oil drain bottle (on the side of the unit) is empty and in
place at this time. Close service coupler valves, and disconnect hoses
from the vehicle access ports.
B. Close the valve on the external source tank.
NOTE : During flushing, up to 12 pounds of refrigerant is charged into
the vehicle A/C system. If you exit the flushing cycle prior to completion
without having closed the valve, the ACR2005 will automatically add
refrigerant to the internal storage vessel, and there will be no room to
recover the refrigerant used for flushing.
C. Remove the vehicle’s A/C system orifice tube, and reconnect the
fittings to create a bypass.
D. Disconnect the compressor block at the rear of the compressor.
E. Attach the compressor block adapter (provided in the flushing kit) to
the system side of the compressor block.
F. Configure the block connectors as desired to provide forward or back
flushing of the refrigerant. The red high-side connection hose from the
ACR2005 is the refrigerant source, and refrigerant flows through it
into the system. Open the red service coupler.
G. Connect the filter housing to the desired return side of the adapter
block and to the blue low-side hose. Open the blue service coupler.
H. Verify that a flushing filter is correctly installed in the flushing filter
housing. Open the isolation valve on the hose.
Operating Instructions
The orifice
tube must be
removed and
the TXV
(Thermal
Expansion
Valve) needs
to be
bypassed.
IMPORTANT!
Always follow
vehicle
manufacturer’s
instructions
for flushing.