Troubleshooting Chart - Xylem YSI 2500 User Manual

10.2

Troubleshooting Chart

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MEASUREMENT ERROR: IB Level Error
Pinched, leaking or disconnected tube.
Fix or replace tubing.
8.4.6 Pump Tubing Replacement
Sipper misaligned.
Check Sipper alignment.
4.4 Align Sipper
Sipper pump not operating properly.
Replace sipper pump seals.
8.4.4 Sipper pump Seal Replacement
Stir bar not in sample module.
Install stir bar.
8.4.1 Sample Module Cleaning
Stir speed too fast or too slow.
Adjust stir speed.
6.2.2.4 Controls, Stirbar
Newly installed enzyme Membrane.
Enter probe diagnostics and check probe currents.
6.2.2 Module
Newly installed probe.
Enter probe diagnostics and check probe currents.
6.2.2 Module
Power disruption.
Enter probe diagnostics and check probe currents.
6.2.2 Module
Failing enzyme membrane.
Perform daily operational checks and replace membrane
if necessary.
5.1 Perform Daily Operational Checks, 4.7 Install Enzyme Membranes
Enzyme Probe surface fouled.
Clean probe surface.
8.4.3 Enzyme Probe Cleaning
Auxiliary electrode fouled.
Clean Auxiliary electrode surface (temperature probe) with isopropyl alcohol.
Sample may contain an interfering substance.
Attempt to confirm interference.
MEASUREMENT ERROR: PL Limit Error
Sipper misaligned.
Check Sipper alignment.
4.4 Align Sipper
Stir bar not in sample module.
Disassemble sample module and reinstall stir bar.
8.4.1 Sample Module Cleaning
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