Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 40 of 105
VI. System Operational Description and Component Review (continued)
C. Inlet Recovery Component Review
The user will connect an AGENT storage receiving container to the outlet valve and
nitrogen to the Nitrogen Supply port of the machine as instructed by the installation
section of this manual.
During recovery, the user will connect a source container of AGENT and open the manual
ball valve MV-1. AGENT will enter the machine past the inlet pressure gauge G1 and the
inlet pressure switch P1 through the inlet particulate filter F1 to reach the inlet pressure
regulator R1. The pressure regulator will reduce the AGENT pressure to permit passage
of flow past the inlet vacuum switch P2 and up to the inlet solenoid valve SV-1. The user
will then press the start push button on the front panel (PLC input #A4 Activates). The inlet
solenoid valves SV-1 and SV-1A will open (PLC output #A2 Activates). The passage of
AGENT through the remainder of the recovery component group will depend upon the
inlet pressure switch P1. Refer to section-V.C: Inlet Pressure Switch Description and
Adjustment. At inlet pressures above the set point of the switch (PLC input A7
Deactivates) the AGENT flow will continue through check valve CV-1 and into the filtration
components. When the inlet pressure decays to below the set point of the inlet pressure
switch (PLC input #A7 Activates) the compressor inlet solenoid valve SV-2 will open and
the evacuation compressor C1 will operate (PLC outputs #A6 and #B3 Activate).
AGENT vapor will pass through solenoid valve SV-2, through the compressor inlet vapor
check valve CV-2 and into the accumulator tank. The accumulator tank will protect the
vapor compressor from liquid slugging via the liquid level switch L1. The hermetically
sealed vapor compressor will provide the vacuum and motive force for the AGENT vapor
recovery and transfer. From the vapor compressor the flow continues through an oil return
separator F2 that removes entrained oil from the AGENT returning it back to the
compressor. After oil separation the vapor will pass through the vapor compressor
discharge check valve CV-3 and onto the filtration components.
If L1 senses that the accumulator tank is receiving liquid flow, PLC input #B1 is
deactivated, and the compressor inlet solenoid valve SV-2 will close. The compressor will
continue to operate, without receiving flow from the AGENT source, until the liquid present
in the accumulator tank has been vaporized and passed through to the filtration
component section. During this self-evacuation flow of AGENT, from the source container,
may continue to the filtration section through SV-1 and CV-1.
D. Filtration Component Review
The AGENT liquid or vapor from the recovery section will pass an emergency relief valve
PV-3 (provides recovery and filtration section over pressure protection at 450 psi) through
a maintenance manual ball valve MV-2 and into the acid filter F3 where acid contaminates
will be neutralized out of the AGENT flow. Flow will continue out of the acid filter, past a
maintenance access valve AV-4 and into the moisture filter F4, where moisture
contamination will be removed. Flow will then continue into the processed particulate filter
F5 for final particulate removal and through a sight glass moisture indicator S1. The
AGENT will then flow through a second maintenance manual ball valve MV-3 and into the
separation components for nitrogen and non-condensable gas separation.
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