Sumitomo HC-4A, Техническое руководство

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Maintenance
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6. Reconnect the supply gas line to the supply coupling on the compressor. Torque the
coupling to 4.85 ± 0.7 kgf m (35 ± 5 ft. lbs.)
7. Leak check all Aeroquip couplings just completed.
8.
Check the equalization pressure. See Specifications.
9. Reinstall the top and side panels.
This completes the procedure for replacing an adsorber.
Used Adsorber Venting and Disposal
For safe disposal of the used adsorber:
1. A venting adapter fitting is included with the new adsorber. Attach it to one of the self-
sealing couplings on the
used adsorber. Vent the used adsorber to atmospheric pressure.
2. Discard the used adsorber and the adapter fitting.
Helium Charging and Venting
Charging or venting is required whenever the equalization pressure of the system is outside the
range as stated in the Specifications. See Specifications for equalization pressures at different
ambient temperatures.
See also the section Gas Cleanup.
Venting is required if leaking self-sealing couplings need to be disassembled for repairs.
PRESERVE YOUR WARRANTY. Specifications require the use of 99.995%
pure helium gas. Using a lesser quality of helium can damage the system and
void the warranty.
AVOID CONTAMINATION. Follow the charging and venting procedures to
prevent reversed flow of system gas. Do not charge through the supply coupling.
Do not vent through the return coupling. Reversed flow can contaminate the
system with compressor oil.
Helium Charging Procedure
Tools required: Adapter fitting P/N 266395C or 255919B2
(2) Open-end wrenches 9/16"
Open end wrenches 1”, 1 1/8”, 1 3/16”
Helium gas cylinder with pressure regulator and charge line
Swagelok fittings listed in step 4
1. Stop the compressor. With two wrenches, remove the gas line or the gas manifold
assembly from the return gas Aeroquip coupling on the compressor.