Caution; Cleaning; Flowcell Troubleshooting - palintest Macro 900 Operation Manual

Macro 900 Operation Manual
gallons/hour). Flow rates above 60 litres/hour (16 US gallons/hour) are not
recommended.

22.5. Caution

The maximum operating pressure of the Flowcell is 300mb (4.4 PSI). Select
your pumping device accordingly. If necessary, use a three-way bypass valve
so that this limit is not exceeded.

22.6. Cleaning

After use, rinse the Flowcell thoroughly with fresh water. To remove stubborn
deposits, scrub the inside of the Flowcell with a bottlebrush and non-abrasive
detergent, then rinse thoroughly.
Never clean the Flowcell with concentrated acid or alkaline based
cleaning products such as Decon 90. These products can strip the
anodised finish from the Flowcell and damage the plastic components.

22.7. Flowcell Troubleshooting

Problem
DO readings are
abnormally high or are
fluctuating wildly.
Turbidity readings are
abnormally high.
Sample water is leaking
from around the top of
the screw collar.
Probe is forced up out
of the Flowcell during
use.
© 2013 Palintest Ltd.
Cause / Remedy
Aeration of sample water. Check all joints for air
leaks. Reduce flow rate to avoid cavitation.
Air bubbles adhering to the Turbidity Electrode
lenses. Agitate Flowcell to dislodge.
Aeration of sample water. Check all joints for air
leaks. Reduce flow rate to avoid cavitation.
Screw collar is not tight enough. Tighten up.
Grease / PTFE tape has not been applied to the joint
between the Probe Sleeve and Probe Body (single
part sleeves only). See 'MAP Preparation Prior to
First Use' on previous page.
Operating pressure is too high. Reduce pressure /
flow rate.
Operating pressure is much too high. Reduce
pressure / flow rate.
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