Diatron Abacus 5 User Manual

138
 Salt build up, or thick salt layer at the bottom or on the inside can block the movement of the needle in
the wash head (or the movement of the wash head around the needle)
 The through hole of the needle in the vertical carriage should be free of salt.
 Salt around the needle can damage the needle and can influence the sampling process, sampling quality
or amount of sample
 The wash head position relative to the needle and to the SR is not correct
 The wash head comes down too far, and if lifted, leaves no room for the SR door to turn
 The vertical rod holding the wash head is not inserted correctly, or was not pushed up to the maximum,
and the wash head is sitting in a low position
20.3.3 Shear Valve (SV) Related Errors
20.3.3.1 SV Error At The First Startup
 the SV cannot turn:
o Make sure that the pull tab has been removed
o Check free movement by hand (rotate the shear valve)
 The SV is stuck:
o Try to open the Shear Valve
20.3.3.2 Grinding Noise After SV Cleaning, (After SV Reinstallation)
 The rotating part cannot reach the opto sensor position – check if the thumb screw is secured correctly
and that there is no gap between the upper and lower discs
20.3.3.3 SV Leakage
 The upper disc is not sitting well on the lower disc
 Open, and reseat the upper disc
 There must not be any opening left between the closing screw and the upper disc
Figure 108. Proper Seating of Shear Valve Thumbscrew
20.3.4 Dilutor Errors
 pinched, clogged tube around dilutor or at the rear reagent tubes
 physical obstruction (foreign material)

Diatron Abacus 5 Specifications

General

Brand	Diatron
Model	Abacus 5
Category	Laboratory Equipment
Language	English