Siemens Hematek, Operating Manual

Page: 65 / 98

Section 6: Minor Replacements and Adjustments, Page 6—11
11. Prime the pumps until the solution in each tube is clear of all air bubbles.
NOTE:
New tubing is sometimes difficult to prime the first time and may need assistance. While
holding the operating lever in the
PRIME
position, push the pump arm inwards (toward the
pump) until the reagent fills the tubing, then release the pump arm. It may also be helpful
for you to pinch the tubing several times with your fingers, pinching in the area between
the cannula and the pump arm.
12. Verify the pump timings and reset the volume controls if necessary. See Pump Volume
Adjustment on page 6-14.
Replacement of the Underplaten Tubing
The underplaten tubing is the tubing between the spout under the platen and the nipple
behind the circuit board. The buffer and rinse tubing should be replaced after
approximately ten Stain Paks have been used. The stain tubing needs to be changed more
frequently, especially if it is not regularly flushed with methanol. Depending on usage and
cleaning patterns, the stain tubing may need to be changed as often as after every four
Stain Paks. Use the following procedure to replace the underplaten tubing with new tubing
in the Hematek Underplaten Tubing pack (Product No. 4484).
1. Remove the three cannulas from the Stain Pak.
2. Raise the operating lever to the
PRIME
position until the reagents are pumped out of
the tubes.
Figure 6-12. Priming the Tubing
3. Turn the instrument off and remove the line cord from the AC electrical outlet.
4. Raise the lid of the instrument.