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10. Troubleshooting
Trouble
Piston is difficult
to move
Reagent is not
aspirated
Cylinder does
not fill
Intake-/discharge
tube not firmly
connected
Air is aspirated
Dispensed volume
is too low
If these measures do not help, return instrument for repair (see chap. 11).
18
Possible causes
Formation of crystals
Sticking filling valve
Discharge valve damaged
Tubes damaged
Intake valve not firmly
connected
Intake tube not firmly
connected or damaged
Reagent with high vapor
pressure has been drawn
in too quickly
Intake valve leaks
Intake tube not firmly
connected or damaged
Action to be taken
Clean instrument
(see chapter 7)
Clean intake valve;
replace if necessary
(see chapter 8.1)
Clean discharge valve;
replace if necessary
(see chapter 8.2)
Replace intake-/
discharge tube
Tighten intake valve;
replace if necessary
(see chapter 8.1)
Push intake tube on firmly;
replace if necessary
Aspirate reagent more
slowly
Clean intake valve;
replace if necessary
(see chapter 8.1)
Push intake tube on firmly;
replace if necessary
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