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Geotech GEM5000
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Page 58 of 127
Operating Manual
OMGEM5KN Iss. 5.1
Copyright Geotechnical Instruments (UK) Ltd
GEM5000
Do not kink the connector cable (risk of cable breakage).
Never allow hard objects to contact rotating impellers.
Always carry out probe cleaning according to the cleaning instructions.
Never immerse probes in solvent.
Never blow probes through with compressed air.
Allow hot probes to cool slowly, never cool by plunging them in cold water etc.
Cleaning instructions:
Instrument and probe must be switched off or disconnected prior to cleaning.
Vane probes:
As the probes are highly sensitive measuring instruments, they must be cleaned with great care.
Fibres or other foreign bodies can be carefully removed with fine tweezers. When doing so, take care not
to bend or otherwise damage the vanes or the spindle.
The adjustment of the bearing screws must never be changed. This can result in an erroneous
measurement.
Never allow hard objects to contact rotating impellers.
Cleaning agents that extract the plasticizer from the plastic are never to be used for plastic probes
(practically all solvents).
Cleaning the probes best practice:
Note: Use soapy water.
Cleaning example:
1) Carefully, swish the top part of the impeller back and forth in clean soapy water for approximately
10 minutes. Then swish the top part of the impeller back and forth in clean soapy water. If soapy
water is used as a cleaning agent it is advisable to wash out the soap solution thoroughly with
distilled water.
2) After cleaning the probe, rub it dry with a clean, dry cloth.

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