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4. Maintenance and servicing

4.1 Changing the batteries

The flow meter is running on 3 alkaline manganese batteries LR 1, SIZE N. The LCD display indicates the approaching

end of the battery life with the word „BATT“ 18.

+ If the „BATT“ display flashes, the batteries must be changed within 1-2 weeks.

Once the „BATT“ display is indicated permanently, the batteries require immediate changing.

Danger!

When changing the batteries in explosion hazard areas danger of explosion occurs!

Blast wave: Flying parts can cause death.

Change of battery only outside of hazardous location with appropriate tools. Only following battery

types are approved:

• VARTA High Energy; No. 4901; Size LR1

• VARTA Electronic Alkaline; No. 4001; LR1; LADY; N; AM5

• DURACELL ALKALINE; SIZE N; MN9100; LR1

• Energizer Alkaline; E90; LR1; N

Mounting steps:

1. Unscrew the battery compartment lid 20

2. Remove the batteries

3. Insert new batteries, checking for correct polarity 19

4. Screw the battery compartment lid 20

5. Press key RESET

+ If the flow meter is not used for longer periods, the batteries must be removed!

C. Operating unit

Lutz ST User Manual

Questions and Answers: