Hach-Lange ORBISPHERE 6110 User Manual - Manual (Page 67)

65
Troubleshooting
10.1.3 Red LED’s on startup screen
Item Possible cause Corrective action
Boards
Bad communication between boards. This
may happen when switching the instrument
on.
Switch instrument off, wait 10 seconds and switch back
on. If the LED is still red call Hach Lange service support.
O
2
sensor
No communication between sensor and
board. Check connection of the oxygen sensor. If problem
persists, call Hach Lange service support.
O
2
sensor residual
too high
O
2
concentration is not below residual
threshold (0.1 mbar)
Wait until a residual < 0.1 mbar is reached.
Check gas purity and gas connections.
Perform an O
2
sensor verification.
Check sensor protection cap positioning.
If required, perform an O
2
sensor maintenance (necessary
for the initial start up).
Note:
A high residual value will also affect the TC sensor
readings and may cause them to go out of bounds. The
problem with the TC sensor readings should self-correct as
the residual value returns to normal.
TC sensor
No communication between sensor and
board. Sensor damaged.
Switch instrument off, wait 10 seconds and switch back
on. If the problem persists call Hach Lange service
support.
Temperature
sensor No communication between sensor and
board. Sensor damaged.
Switch instrument off, wait 10 seconds and switch back
on. If the problem persists call Hach Lange service
support.
Flow sensor
No communication between sensor and
board. Sensor damaged.
Switch instrument off, wait 10 seconds and switch back
on. If the problem persists call Hach Lange service
support.
Pressure sensor
No communication between sensor and
board. Sensor damaged.
Switch instrument off, wait 10 seconds and switch back
on. If the problem persists call Hach Lange service
support.
Foam detector
Ingress of foam or liquid in the sampling
tube.
Activate the needle and the purge valves in the Global
System View screen (see
Global system view on
page 62 ).
Electrovalves
Switch instrument off, wait 10 seconds and switch back
on. If the problem persists call Hach Lange service
support.
Motor Bad initialization or communication.
Initialize motor position in the Actuator Verification screen
(see
Actuator verification on page 60 ).
Ultrasound Sonotrode failure
Activate the emergency STOP button and call Hach Lange
service support.
Protection cover
Cover is not on the instrument or is badly
positioned.
Cover detection sensor failure.
Check that the cover is correctly in place and fixed with
screws.
Check that the position detector is in place (in the back of
the instrument).
Emergency STOP
The emergency STOP button is in the
activated position (pushed in). This can happen during transportation. Release the button
by turning it clockwise.