Mettler Toledo EasyClean 350 e Instructions D'utilisation page 41

EasyClean 350 e
Failure
Electrode does not move out of the
process, InTrac housing does not move
Insufficient rinsing of the electrode
Automatic cleaning does not start
The keys are not active
The pipes are not rinsed with air
The diaphragm pump does not start
EasyClean 350 e
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Probable cause
The housing does not reach the
required end position (housing jams).
The transmitter goes on hold and no
further processes are performed.
Programmable control fault function.
Insufficient water flow.
Rinse interval too long and/or
rinse times too short.
Rinsing chamber blocked.
Water valve jammed in the valve unit.
The cleaning start signal from
the transmitter is not recognized by
the device.
Wash contact not activated on the
transmitter.
Process performed by EasyClean.
No power to the EasyClean.
Poor contact connection to the keys.
Compressed air not switched on.
Air pressure is too low.
Air valve L3 jammed.
Air hoses incorrectly fitted
or defective.
The air control valve is not receiving
any power.
The diaphragm pump is not receiving
any power.
The pump is defective.
Remedy
Check position indicator, control
pressure and power supply.
Note: If the cause is rectified, the
command started is completed.
Check programmable control.
Increase water flow (2 – 4 bar) or
clean the pipe.
Shorten the interval on the transmitter,
increase rinse times on the EasyClean.
Take out the electrode and housing
and clean the rinsing chamber.
Clean, poss. replace valve.
Check the wiring with reference to
Section 5.3 "Control unit".
Activate the wash contact as described
in Section 6.5.
Wait until message "RUN" or "SERVICE"
appears in the display.
Check power supply.
Check contacts to the keys,
see Section 5.3.
Switch on compressed air.
Increase pressure up to 4 – 6 bar.
Clean or replace valve.
Check hoses for leaks.
Avoid pinching/distortion of the tubing.
Check the wiring as described in
Section 5.3 "Control unit" (Control unit
wiring 17, red).
Check the wiring as described in
Section 5.3 "Control unit" (Control unit
wiring 21, blue).
Replace pump.
© 04/07 Mettler-Toledo AG, CH-8606 Greifensee
Printed in Switzerland
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