Etatron eSelect M 1 CD COOL, Инструкция по эксплуатации и техническому обслуживанию

Страница: 33 / 36

36
ENGLISH
INSTRUMENT TROUBLESHOOTING
Configuration of CONDUCTIVITY PROBE wires
RED wire
WHITE wire
Shielded wire
Do not wire
Installation of LEVEL PROBES and TANKS for chemical products
Switch
Level float
WARNING: ignoring the safety information may endanger your life or cause severe injuries!
ATTENTION: in the presence of gas or in premises saturated with gas, ensure you disconnect the device’s power supply for metering the
Chlorine gas; also ensure the power supply of other equipment making up the system is secured.
Before working on the unit, disconnect it from the mains
MALFUNCTION POSSIBLE CAUSE SOLUTION
1. Display is OFF
No power supply
a. Check the electrical connections
b. Check whether the mains match the power supply
printed on thelabel.
Burnt smell
Check the board and replace it following authorisation by
ETATRON
2. The measurement display remains fixed
(there are no changes)
Conductivity levels are NOT
stable
Check again using a portable instrument, especially the
temperature
The signal from the sensor does
not
change
Repeat sensor calibration andif the problem persists, change
the sensor.
3. The measurement display changes
all the time (measurement surges)
Electrical disruption from the
local mains
Check the local mains. Check the earthing system
connections
Micro-electrical disturbances in
the
measured fluid
Check instrument calibration, if the instrument measures
correctly eliminate the electrical disturbances and refer to
point A
4. The sensor calibration
procedure cannot
be completed
Old or contaminated
buffer solution kit
Change buffer solution and use a portable kit
Faulty sensor Adhere to the recommendations below
IMPORTANT TESTS: in cases 2, 3, 4 above always test operation of the unit with the following steps:
A. Take down the unit from the system and install it in another room or laboratory without connections to other devices, but directly to the local
mains.
LEVEL 1
INHIBITOR
LEVEL 2
BIOCIDE 1
LEVEL 3
BIOCIDE 2
36