Iso-Tech IDM 97 Manuel D'instructions page 22

(5) Changing the fuses
To change the fuses, see Fig.2B and follow the instructions given below.
1. Carry out steps 1 to 3 of the instructions for changing the battery.
2. Lift the printed circuit board out of the top half of the case. Do not remove any of the screws from the printed circuit
board.
3. Remove the faulty fuse by levering one end up out of the fuse holder and then pulling the fuse out of the fuse
holder by this end.
4. Fit a new fuse of the same size and ratings into the fuse holder. Make sure that the fuse is centered longitudinally
in the fuse holder.
5. Make sure that the bar of the rotary switch in the top half of the case and the rotary switch on the printed circuit
board are both in the "OFF" position. Important: The direction of the switch bar in the top half of the case and the
direction of the rotary switch on the printed circuit board are not the same.
6. Fit the printed circuit board back into the top half of the case. See that all the seals are properly seated and that
the
two hooked lugs are correctly engaged in the top half of the case. Screw the three screws back in.
Fuse Specification
1A 10.5 x 35mm 600V fast HBC 100kA
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