TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PORTABLE TURBIDITY METER.
1. Display will not stabilize.
Step 1.
Check light shield.
Place correctly over sample well.
Step 2.
Check battery.
If low battery light is on, recharge battery.
Step 3.
Check sample cuvette.
If sample is cold, water will form on the outside. Wipe off cuvette.
Step 4.
Check instrument.
If instrument has been moved from a different temperature, it needs time to stabilize at new
temperature.
2. Reference adjust knob does not have enough travel to adjust for the reference standard value.
Step 1.
Check standard cuvette.
If cuvette is scratched or rubbed or can not be cleaned, replace standard. If cuvette is aged,
replace standard.
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