Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 45 of 105
VII. System Maintenance Procedures (continued)
E. Cooling System Pressures Inspection
A loss in cooling system refrigerant charge will increase the amount of time it takes for the
machine to cool the AGENT to processing temperatures and may damage the
compressors of the refrigeration system. View the system #1 and system #2 high and low
side pressure gauges on the rear of the machine after the machine has remained idle for
12 hours and the high and low side readings have equalized. A cascade refrigeration
specialist should be called in to inspect the system for leaks and add charge as required
to the systems if system #1 gauges fall below 130 psi and system #2 gauges fall below 65
psi.
Additionally system #1 will be fully charged when system #1 sight glass is completely
liquid full when system #1 compressor is operating. View the sight glass as the
compressor starts: a few bubbles should be visible at first and then dissipate into solid
liquid as the compressor runs. The sight glass is visible through the rear of the machine.
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