Adjusting System Helium Pressure; Reducing Helium Pressure - HELIX 9600 Installation, Operation And Maintenance Instructions

Adjusting System Helium Pressure

Reducing Helium Pressure

Gas Charge Flared Fitting
Gas Charge
Control Valve
©2007 Helix Technology Corporation
NOTE: These procedures can be performed on a compressor that is turned
ON or OFF. However, the helium pressure gauge should be set to the
("OFF" Condition) helium charge pressure value if the compressor is
turned OFF or set to the normal system operating pressure if the
compressor is turned ON. Refer to
information.
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.
1. Remove the flare cap from the gas charge fitting as shown in
Figure 5-3.
Helium
Pressure
Gauge
Figure 5-3: Helium Pressure Control Components
2. Open the gas charge control valve very slowly to allow a slight
amount of helium to escape. Leave the valve open until the helium
pressure gauge indicates one of the following:
• To the appropriate value in
acclimated to a temperature between 60º F and 80º F
Part Number 8040437, Revision 104, 06/12/2007, ECO Number 18068
"Section 4 - Operation"
procedure in "Section 4 - Operation"
Table 4-1 if the compressor is OFF and
for more
in order to
""OFF"
procedure in "Section 4 -
Rear Panel
5-5