INFICON Front Load Single Sensor - Manual (Page 56)

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Front Load Single and Dual Sensors Operating Manual
2.3.1 Tube Bending
CAUTION
Read this entire section before attempting to
bend the tubes. Incorrect tube bending that
damages the tubes voids the warranty.
If it is necessary to bend the tubes to clear obstacles inside the chamber or to bring
the sensor head into a proper mounting location, observe the following
precautions:

Support the tubes where the bends will be placed to avoid a tube being
collapsed or pinched.
NOTE: Use the Tube Bender Kit, PN 750-037-G1,
provided with all non-welded sensors to bend the tubes.
 If the water tube is collapsed, water flow will be restricted. The sensor will
not have sufficient cooling.
 If the air tube is collapsed, air pressure will be restricted. The shutter will not
operate correctly.
CAUTION
Do not form the sensor tubes with a bend radius
less than 8 mm (0.315 in.) from the inside of the bend or
9.5 mm (0.375 in.) from the center line of the tubes.
Bends must be farther than 20 mm (0.79 in.) away from
the braze joints on the tubes.
Do not use the sensor body as a leverage point. This may
result in a failure of the braze joints on the tubes.
The 3.175 mm (1/8 in.) tubes are flexible enough to bend, but they are not designed
for repeated bending. Plan bends wisely. Before the actual tube bending, verify the
bend position again to avoid readjusting. If in doubt, contact INFICON support,
refer to
section 1.3, How to Contact INFICON, on page 1-2 .