Sumitomo Marathon CP-8 - Install the Gas Lines

Installation
22
Install the Gas Lines
Tools required: Open end wrenches, 1”, 1 1/8”, and 1 3/16”
Gas line couplings are shipped with protective dust plugs and the cryopump and compressor
couplings are protected with dust caps. Do not remove the plugs and caps until the gas lines
are ready to be attached. All bending and routing of gas lines should take place with plugs in
place.
AVOID INJURY. Always wear eye protection when handling pressurized gas
lines and other pressurized equipment.
EXPLOSION HAZARD. Never apply heat to a pressurized gas line or to other
pressurized components.
PREVENT EQUIPMENT DAMAGE. Do not crimp the gas lines. Subsequent
attempts to bend the gas lines can damage them.
NOTE
SCAI recommends having 99.995% pure helium gas available at the installation
site in case gas needs to be added to the system. See Refrigerant Quality in
Specifications in this manual.
1. SCAI furnishes identification labels for the customer to attach to the gas lines. Before
installing the gas lines, identify each with its appropriate label, SUPPLY (color-coded red) or
RETURN (color coded green) by applying the label adjacent to each Aeroquip coupling.
See Figure 9.
Figure 9 Attach Identification Label
2. Arrange the system components so that the gas lines will be protected from stress and
traffic. Observe the minimum bend radius specified in the Gas Lines manual. Routing of
gas lines should consider the need for gas line supports.
3. Remove the dust caps from the compressor supply and return gas couplings.
4. Remove the dust plugs from the couplings on one end of each of the supply and return gas
lines.
Identification Label