Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 57 of 105
VII. System Maintenance Procedures (continued)
J. Heat Exchanger Evacuation
The heat exchanger evacuation should be performed after every 10000 pounds of
processed AGENT to reduce moisture and ice formation internal to the machine. The
evacuation procedure will also need to be performed if the front panel displays the vapor
compressor discharge high-pressure error. The error is indicated when the machine stops
processing with the front panel processing lamp the mid-level and the high level lamps all
flashing off and on.
NOTE: Evacuation is most easily accomplished just after the machine stops processing
automatically and the empty source container is disconnected. If the source container
is not empty perform section-V.E: Disconnecting the Source Container When it is not
empty; before starting this procedure.
Evacuation Procedure
Required Materials:
Vacuum Pump
Vacuum Gauge
¼” Refrigeration Service Hoses
#2 Phillips Drive Screwdriver
1. Complete steps #1 through #20 of section-H: Moisture Acid and Processed Particulate
Filter Element Replacement of this manual. This will purge any agent vapor in the inlet
and filter sections of the machine into the process tank.
2. Disconnect main electrical power from the machine. Allow the machine to warm to room
temperature.
3. Remove the upper rear panel from the machine.
4. Reference figure-12 to locate the process tank manual inlet valve MV-5. Close manual
valve MV-5. The valve will be closed when the valve handle is at a 90 angle to the
valve body.
5. Open the filter maintenance access door on the top-right corner of the control panel
black hood.
6. Locate the filter maintenance manual ball valve MV-3 and close the valve. The valve
will be closed when the handle of the valve is at a 90 angle with the body of the valve.
Refer to figure-11 for component locations.
7. Locate and remove the valve cap from access valve AV-1 located next to manual valve
MV-3. Set the cap aside for reinstallation.
8. Depress the valve core of the AV-1 access valve to release any residual nitrogen
pressure.
9. Connect a vacuum pump and vacuum gauge to the AV-1 access valve. Operate the
pump to evacuate the heat exchanger to a 1000-micron minimum vacuum level.
10. Remove the vacuum pump and vacuum gauge from the AV-1 access valve.
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