Troubleshooting - ProMinent DULCOMETER Assembly And Operating Instructions Manual

ProMinent ®
7

Troubleshooting

IMPORTANT
It is possible for water to escape and spray arround. Take appropriate measures,
if necessary.
Failure: the float does not show the correct flow rate or has become stuck
Reason: dirt in the water in the in-line probe housing module
Remedy: clean the module and the float using a cloth and test tube brush, or other similar
item, and, if necessary, insert a filter
IMPORTANT
Do not use chemical cleaning agents! They may attack the DGMa!
Reason: the in-line probe housing module is not completely straight
Remedy: install the in-line probe housing module so that it is vertical
Failure: the flow sensor contact does not open
Reason: the reed contact has jammed because the electrical voltage was too high
(even if only for a short period)
Remedy: reduce the voltage using a protective resistor and replace the flow sensor
Failure: the reading produced by a pH or redox sensor is unstable. It cannot be calibrated.
Reason: a potential equaliser pin has not been connected although the measurement and
control system has been prepared for it.
Remedy: connect a potential equaliser pin (use an equipotential plug)
Reason: the measurement and control system has not been prepared for measurement with
a potential equaliser pin (e.g. there is no jumper in the system)
Remedy: prepare the measurement and control system for this type of measurement
(e.g. jumper two terminals in the system)
Reason: the measurement and control system has not been prepared for measurement
without a potential equaliser pin (e.g. terminals 9 and 10 in the DULCOMETER
have not been jumpered)
Remedy: prepare the measurement and control system for this type of measurement
(e.g. connect a jumper in the system)
Reason: the sensor is dirty, defective or requires regeneration
Remedy: clean, replace or regenerate the sensor (please refer to the sensor operating manual)
Failure: there is air in the in-line probe housing
Reason: the in-line probe housing has been installed incorrectly
Remedy: install the in-line probe housing correctly (please refer to the "Installation" section)
Open the stop valves fully and increase the flow rate to a maximum of 100 l/h until
the air is forced out of the in-line probe housing
Failure: the sampling tap does not release any water
Reason: positive suction pressure in the in-line probe housing
Remedy: install the in-line probe housing correctly (please refer to the "Installation" section)
Failure: the flow changes over a few hours
Reason: the module admission pressure is not constant
Remedy: check the function of the pump in front of the in-line probe housing.
Check that the pump has been installed correctly.
Troubleshooting
® D1C
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