Hach TU5400 sc Basic User Manual page 29

9.8 Replace the tubing
Replace the tubing when the tubing has a blockage or has damage.
Turn the flow shutoff valve to stop flow to the instrument. Then refer to
on page 17 to replace the tubing.
Section 10 Troubleshooting
Refer to the expanded user manual on
10.1 Reminders
Reminders show on the controller display. To see all of the reminders, push menu then select
DIAGNOSTICS>TU5x00 sc>REMINDER.
Message
DRYER RANGE The desiccant cartridge capacity
is low.
PERFORM CAL A calibration is due.
PERFORM VER A verification is due.
WIPER REPLACE A wiper replacement is due in the
automatic cleaning module.
10.2 Warnings
Warnings show on the controller display. To see all of the active warnings, push menu then select
DIAGNOSTICS>TU5x00 sc>WARNING LIST.
Warning
CLEANING The automatic cleaning module
MODULE does not operate correctly.
DESICCANT OLD The desiccant cartridge is more than
2 years old.
DRYER EXHAUS'D The desiccant cartridge life is zero.
HIGH FLOW The flow rate is higher than the limit
(more than 1250 mL/min).
HUM PCB SC There is humidity on the interior
electronics of the instrument.
LASER-TEMP The laser temperature is higher than
HIGH the limit.
LASER-TEMP The laser temperature sensor has a
SENS malfunction.
LOW FLOW The flow rate is lower than the limit
(less than 75 mL/min).
NO FLOW The flow rate is less than
10 mL/min.
www.hach.com
Description
Description
Plumb the instrument
for troubleshooting information.
Solution
Replace the desiccant cartridge. Refer to the
documentation supplied with the desiccant cartridge.
Do a calibration. Refer to
Do a verification. Refer to
Replace the wiper in the automatic cleaning module.
Refer to the documentation supplied with the automatic
cleaning module to replace the wiper.
Make sure that the wiper head is installed correctly
and the wiper arm can move up and down.
Replace the desiccant cartridge. Refer to the
documentation supplied with the desiccant
cartridge.
Replace the desiccant cartridge. Refer to the
documentation supplied with the desiccant
cartridge.
Adjust the flow regulator as necessary. Make sure
that the flow regulator does not have a malfunction.
Contact technical support. Measurements with
limited validity are still available.
Decrease the environmental temperature of the
instrument.
Contact technical support. Measurements with
limited validity are still available.
Examine the tubing for blockages that decrease the
flow rate. Remove the blockages.
Adjust the flow regulator as necessary. Make sure
that the flow regulator does not have a malfunction.
Examine the tubing for blockages stop the flow.
Remove the blockages.
Calibration on page 21.
Verification on page 21.
Solution
English 29