Increasing Helium Pressure; Adding Helium - HELIX 9600 Installation, Operation And Maintenance Instructions

Adjusting System Helium Pressure

Increasing Helium Pressure

If helium is being added more than once every several months, check
for leaks caused by improperly connected self-sealing connections or
any mechanical joint in the Compressor.

Adding Helium

Use only 99.999% pure helium gas. Helium circuit contamination may
result if a lower quality of helium is used.
5-6 Part Number 8040437, Revision 104, 06/12/2007, ECO Number 18068
(15.5º C - 26.6º C).
• To the value previously recorded in the
procedure in "Section 4 - Operation"
3. Close the gas charge control valve and install the flare cap.
Use the following procedure to increase the helium pressure if the
indicated pressure is below the appropriate value as shown in
CAUTION
NOTE: You must obtain the normal system operating pressure from the
"Compressor Operation"
perform this procedure. If the normal system operating pressure is
unknown, then shut the compressor OFF and perform the
Condition Helium System Pressure Verification"
Operation" instead.
This procedure ensures that both the regulator and the charging line will be
purged of air and that the air trapped in the regulator will not diffuse back
into the helium bottle. For best results, CTI-CRYOGENICS suggests a
dedicated helium bottle, regulator, and line, which are never separated, for
adding helium.
NOTE: You are required to supply the helium charging line terminating in
a 1/4-inch female flare fitting, and a two-stage pressure regulator rated at
0-3000/0-400 psig for this operation.
CAUTION
"Compressor Operation"
if the compressor is ON.
procedure in "Section 4 - Operation"
©2007 Helix Technology Corporation
Table 4-1.
in order to
""OFF"
procedure in "Section 4 -