Hach TU5400 sc, Basic User Manual

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