Chapter 4: Maintenance 131
1 Remove the safety cover from the HTS.
2 Detach the sample coupler from the cytometer SIT.
3 Remove the SIT protector (Figure 4-16).
Unscrew the tube retainer and slide the SIT protector straight down.
Figure 4-16 Removing the SIT protector
4 Slide the tube retainer down the metal tubing to find the O-ring.
If the O-ring is stuck inside the retainer, push the retainer to the top of the
tubing and work it down at an angle until the O-ring is free.
5 Remove the O-ring.
To avoid bending the SIT, do not slide the SIT protector at an angle.
tube retainer
SIT protector
O-ring
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