Clean The Meter; Replace The Battery; Troubleshooting; Diagnostics - Hach FH950 User Manual

Clean the meter

1. Push the power button to de-energize the meter.
2. Use a clean, moist cloth to clean the meter exterior. Mix the water with a mild detergent if
necessary.
3. Dry the meter exterior with a clean cloth. Let the meter dry in air completely before it is energized
again.
Note: Do not use paper-based cloths to clean the display. This type of cloth can cause damage to the display
screen.

Replace the battery

Fire and explosion hazard. This equipment contains a high energy lithium battery which can ignite and
cause fire or explosion, even without power. To maintain the safety provided by the instrument
enclosure, the instrument enclosure covers must be installed and secured with the supplied hardware.
Explosion and fire hazard. Battery substitution is not permitted. Use only batteries that are supplied by
the instrument manufacturer.
Replace the battery when the battery does not hold power when charged.
Note: If the instrument must be returned to the factory for repair or maintenance, remove the battery and put the
battery in a protective cover before shipment.
1. Set the power to off.
2. Remove the battery. Refer to
3. Discard the battery in accordance with local, regional and national regulations.
4. Install a new battery in the same location and with the same orientation. Refer to
battery on page 10.
Use only batteries that are supplied by the instrument manufacturer.
5. Install the battery cover. Make sure that the cover is secure to keep the enclosure rating.
6. Charge the battery if necessary. Refer to

Troubleshooting

Diagnostics

In the Main Menu, select Diagnostics to see information about the meter and do the diagnostic tests
in Table 5.
Option Description
About Shows information about the meter and the sensor. Includes the serial number and the firmware
version.
Delete files Deletes all files from memory to make space for new measurements. Make sure that the data is
downloaded to a PC before this option is selected. The system automatically reformats the
memory after file deletion.
Sensor Shows diagnostic information about the sensor.
W A R N I N G
W A R N I N G
Install the battery on page 10.
Charge the battery
Table 5 Meter diagnostics
Install the
on page 11.
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