Operation Manual

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4. Maintenance

4.1 Replacing fuses

- F1

M 0.315 A / 250 V, 20 x 5 mm, T.Nr.: 757211

 ThisfuseprotectsinternalcircuitryoflowΩresistancefunctioniftestprobesareconnectedto

the mains supply voltage by mistake.

- F2, F3

F 4 A / 500 V, 32 x 6.3 mm, T.Nr.: 757212

General input protection fuses of test terminals L/L1 and N/L2.

Warning:

-  Disconnect any measuring accessory and power off the BENNING IT 120 B before

opening battery/fuse compartment cover, hazardous voltage inside.

- Replace blown fuse with original type only, otherwise the BENNING IT 120 B may be

damaged and/or operator’s safety impaired.

Battery and fuse compartment

Legend:

1 Fuse F1

2 Fuse F2

3 Fuse F3

4 Serial number label, a further serial number label is located outside next to the information label

5 Batterycells(sizeAA)

6 Battery holder

Maintenance Replacing fuses