4. TSM Service Program 1/2010 4 - 93
BA-TE-DE08C M.KAY Dialog+ SW9xx_SM_Chapter 4-2-1_1_2010.doc/pdf <110301> yymmdd B. Braun Avitum AG
Dialog
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SW 9.xx
4.8.2.18 Test 1.18 Blood Leak
1. Activate the Blood Leak Detector menu with
the Blood Leak Detector key in the LL Manual
Test menu. The following menu is displayed.
2. Check the functions with the appropriate keys.
You can check the following functions of the
blood leak detector:
• Red and green LED
• Receiver circuit
• Optical efficiency of the detector block
You can skip directly to the calibration of the blood leak detector by pressing
the
key.
Blood Leak Detector
The blood leak detector performs an automatic calibration of the zero point
with a reference diode.
The blood leak detector can be checked and calibrated. The rinsing block must
have an even temperature for calibration. If both dialyser couplings are
connected to the rinsing bridge the flow pumps FPA/FPE work in main flow.
If only one coupling is connected FPE is stopped. The test solution can be
drawn in by the second coupling via FPA. The first calibration point must be
performed with clean water from the water treatment system.
A function test and a calibration are performed for the blood leak detector.
If an actual value is out of limits during the function test, the blood leak
detector has to be exchanged.
Check the blood leak detector after a citro-thermal disinfection (LL Manual
Test, Test 1.18 Blood Leak Detector).
Close front and rear door for the function test to prevent light irradiation on
the sensor.
Leakages
Air and micro-bubbles can lead to false measurement values in the
measurement line and can cause fluctuation of the actual value.
If air is visible check the complete system for leaks in menu 1.20 Test Water
Part. After the initialisation phase rinse the blood leak detector approx. 1 min
and then perform a leakage test of the system in menu 1.19 Leak Test.
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