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Water Hardness Analyzer
AW101 Testomat
6 Error Messages and Troubleshooting
Displayed Message
(flashes at selected display)
CANCEL WITH HORN-KEY
Ff. DOSING PUMP
Mf. TURBID
MEASURING RANGE EXCEEDED
LOW WATER-PRESSURE
Ff. OUTLET TO DRAIN
REAGENT LOW
Mf. DIRTINESS
Ff. OPTICS
Mf. ANALYSIS
Ff. DOSING FAULT
Table 6.1 Error Messages and Troubleshooting
Key
Ff.
= Function fault
Mf.
= Measuring fault
BOB = Low-level reagent alarm – see section 4.13, page 10.
14
Possible Causes
Dosing pump defective
No dosing message from the dosing pump
The water is turbid / dirty
The measuring range is exceeded
No water input although LED I is lit
Inlet pressure too low
Overflow reagent is not active
Water remains in the measuring chamber
although LED OUT lights up
Reagent quantity is below minimum setting
without BOB: 50 ml (10%), with BOB: after
calculation
Sight-glass windows dirty
Plug-in circuit board defective
Error at the optic component (transmitter or
receiver defective)
Incorrect analysis
For example:
Air in the dosing capillary
Incomplete blending
Reagent too old or use of third-party
reagent
Dosing inaccuracy of the dosing pump
6 Error Messages and Troubleshooting
Remedies
Replace dosing pump
Check cable to the dosing pump for correct
connection
Choose another type of reagent (Basic program)
Check water inlet
Connector of the inlet valve oxidized
Clean filter strainer
Replace valve block
Extract pressure regulator valve
Carry out adjustment
Check water outlet
Connector of the outlet valve oxidized
Replace valve block
Check reagent level, fill up if necessary:
enter level: M SERVICE
Clean sight-glass windows
Replace plug-in circuit board
Replace measuring chamber sealing rings
Tighten connections of the dosing pump
Replace stirring mechanism
Replace suction insert in the bottle
Replace reagent (use only ABB reagent)
Replace dosing pump or return to the supplier for
calibration
IM/AW101
Rev. C
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