Siemens Hematek, Operating Manual, Page: 68 / 98

Page 6—14, Section 6: Minor Replacements and Adjustments
13. Connect the tubing to the stain spout under the platen, and then check all connections
to make sure the tubing is securely in place.
Figure 6-16. Connecting Underplaten Tubing to Platen Spout
14. Repeat steps 8 through 13 for the buffer and rinse tubing.
Connect each tubing section to the appropriate nipple behind the circuit board and
then connect the tubing to the appropriate spout under the platen.
15. Place the waste tank back in the instrument.
16. Connect the
LOW STAIN
and
POWER
lights to the circuit board, as directed in this
section.
17. Return the circuit board cover to its normal position, between the circuit board panel
and the back edge of the screws, and tighten the two thumbscrews.
Be sure the panel is not resting on top of the screw heads before tightening.
Pump Volume Adjustment
The Hematek Slide Stainer is designed to produce stained slides of consistent quality in a
continuous process. This is accomplished by having a fixed length of time in each of the
three phases of stain, buffer, and rinse, as well as a predetermined ratio of stain-to-buffer
volumes in the buffer phase.
The stain-to-buffer ratio is adjustable to provide ratios of at least 1:2 to 1:3. This feature
allows the user flexibility in obtaining the desired stain results.
A small change in the
stain-to-buffer ratio can result in either lighter or darker staining. The amount of
reagent pumped in each of the three phases is adjustable through the use of the volume
control knobs located in the front control panel.