Procedure
To replace the Bal seal:
1. Remove the outer sleeve from the sample injection tube by turning the retainer counterclockwise. Slide the
outer sleeve down and off of the sample injection tube.
Item Number Component
1 Bal seal
2 Retainer
3 Outer sleeve
4 Sample injection tube
Work carefully. The outer sleeve can fall off as you loosen the retainer.
2. Remove the Bal seal by gripping it between your thumb and index finger and pulling down.
3. Install the new Bal seal spring-side up.
Ensure that the sample tube O-ring is still in place inside the retainer.
4. Re-install the retainer and outer sleeve over the sample injection tube. Push the outer sleeve all the way up
into the sample injection port and then screw the retainer into place and tighten to finger tight. This will
seat the Bal seal.
5. Install a sample tube on the SIP to ensure that the outer sleeve has been properly installed.
If the sleeve hits the bottom of the tube, loosen the retainer slightly and push the sleeve up as far as it will
go. Tighten the retainer.
Chapter 4 Maintenance 43
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