T
Thermo Fisher Barnstead
Pacific AFT
Pure water system
43
16. Trouble shooting
Fault
Cause
Remedy
Cannot be started
- No supply of power
- Connect to the power supply
Water cannot be drawn off
- Feedwater tap is closed
- Feedwater and rinse water
connections mixed up
- Feedwater pressure
< 1.5 bar
- Turn the water tap on
- Reverse the connections
- Increase feedwater pressure
Conductivity value too high
- Exchange capacity is
exhausted
- Replace the filter cartridge
Controls no longer reacts
- Incorrect operation
- Unplug line plug for 5 sec.,
then plug back in
Water leaks out
- Hose connection leaks
- Feedwater pressure > 6 bar
- Check hose connection and
stop
leak
- Install pressure reducer
- Use emergency supply if
necessary
Permeate flow is too low
(-15%)
- RO-Membrane blocked
- Initial pressure too low
- Internal pressure too low
- Fluctuating feedwater
temperature
- Clean the RO-membrane
- Increase initial pressure
- Re-adjust the pressure
reducer
- Use emergency supply if
necessary
Wrong time or date
- Time difference
- Time change
- Reset time and date
Wrong language
- Wrong language set
- Correct the language setting
Fault message:
“Lim. Val. Permeate“
- Permeate conductivity too
high
- Limiting value set too low
- Check the pretreatment
- Check and adjust the
limiting value setting
