Common Faults and Trouble Shooting for Semi-automatic Blood Coagulation Analyzer-江苏鸿恩医疗器械有限公司

Faults

Reasons

Solutions

1.   The device does not enter the   system when power turns on.

A.   Power on reset error.

A.   Restart the device.

B.   Printer communication   disconnected.

B.   Connect communication cable   and check printer power supply.

2. Sample injector does not work   properly. (No beeping)

A.   Cable is not plugged.

A.   Check cable plug. 

B.   Sample injector is broken.

B. Apply for   maintenance   or use START button to start   test.         

C.   Sample is injected before   “waiting for test” shows up.

C.   Retest and inject sample after   “waiting for test” shows up.

D.   Pushing strength is not enough   to initiate the test.

D. Retest and   push hard   enough to initiate the test.

E.   Volume mark is not in line   with the scale (100uL 200uL etc.)

E.   Check the volume mark and   scale.

3.   Test time is too short.

A.   Anticoagulant reagent   selection is incorrect (sodium citrate).

A.   Use sodium citrate as   anticoagulant.

B. Anticoagulant   concentration is low (E.g. sodium citrate   pulveres become damp.),   causing its actual content is not enough.

B. Dilute anticoagulant at required dilution   ratio. 

C. Vacuum blood collection tube is lack of negative     pressure, causing blood plasma to anticoagulant ratio is incorrect.

C.   Redo proportioning   at blood plasma to anticoagulant ratio of 10:1.

D. Vacuum blood     collection tube pressure is incorrect; causing blood plasma content is   high.

D.   Recollect blood sample and add   anticoagulant at required ratio.

E.   Reagent volume is inaccurate   while reconstitution.

E. Add enough regent or redo reconstitution.

F. No   anticoagulant or   incorrect anticoagulant concentration.

F. Recollect blood sample and add anticoagulant at     required ratio.

G.   Hematocrit is less than 26%.

4. Check   detector   functioning

Set   the device in “Testing”   state, insert a cuvette filled with reagent into the   detector slowly,   and observe the testing state (XXH value) on the screen. If the   value   changes (high to low or low to high), the detector works properly.

5. Test error or   test time is too long.

A. Anticoagulant     concentration is incorrect.

A.   Check anticoagulant   concentration. Beware of volatilization. Cover the lid   tightly after   use.

B. Sample   injector scale   mark is incorrect; or pipette tip is clogged, causing   low volume or cross   contamination.

B. Check scale   mark,   replace the tip, and redo injection.

C. Test state   displays H   value lower than 1FH or higher than FFH, causing no enough   space for   decreasing or increasing.

C.   Replace or reposition cuvette to make H value stay between 20H and   C0H.

D.   Improper injection or injection with excessive force, causing air bubble.  

D.   Redo injection in proper way.

E. Blood plasma   sample   volume is low while anticoagulant volume is normal.

E. Redo blood   collection.   Centrifugalize the sample for 10 minutes at 3000~3500 rpm.

F. Incorrect   operation   steps. E.g. diluent volume is incorrect or cross   contamination in steps of   FIB reagent reconstitution.

F.   Redo reagent reconstitution.

G.   Reconstituted reagent exceeds   stabilization period or expiration date.

G.   Use stabilized and unexpired   reagent.

H. Vacuum blood     collection tube is contaminated. (E.g. contact with heparin)

H.   Beware of contamination.

I.   Collected sample is stored for   too long or not covered with lid, causing   coagulation during storage   period.

I.   Recollect samples.

J. Multiple-time   injection, stratified liquid layers, or vacancy   at the bottom.

J. Retest.

K. Incorrect   operation   steps. E.g. Inserting cuvettes after starting test (pushing   enter   button). 

K.   Retest.

L.   Inserting cuvettes in wrong   location or in test positions without LED light   indicating.

L．Retest. Insert cuvettes in indicated location and then   push enter   button.

M.   Incorrect operation steps. E.g.   Inserting cuvettes after FIB test starts.

M. Push enter button to start   test after   inserting cuvettes, and wait for a few seconds to inject   sample when “waiting   for test” shows   up.

6.   Notes

A.   In case of faults   investigation, pay attention to H value changing.

A. H value   fluctuation range: 20H-FEH. Test   initial point range:20H-C0H

B.   Beware of inaccurate   anticoagulant content and incorrect operation steps,   especially unused   anticoagulant and reagents stored for very long time.

B.   Check carefully before use.

C. Blood sample   illness is lethal, causing test error or abnormal   results.

C.   Perform manual test to compare   results.   

D. For samples with serious unusual test     results, retest is recommended.

D.   Retest.