Endress+Hauser Prosonic Flow 90, Operating Instructions Manual

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9 Trouble-shooting Proline Prosonic Flow 90
92 Hauser
9.9 Replacing the device fuse
#
Warning!
Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power
supply is switched off before you remove the cover of the electronics compartment.
The main fuse is located on the power unit board (Fig. 52).
The procedure for replacing the fuse is as follows:
1. Switch off power supply.
2. Remove power unit board
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Page 89
3. Remove protective cap (1) and replace the device fuse (2).
Use only fuses of the following type:
– Power supply 20...55 V AC / 16...62 V DC
→
2.0 A slow-blow / 250 V;
5.2 x 20 mm
– Power supply 85...260 V AC
→
0.8 A slow-blow; 5.2 x 20 mm
– Ex-systems
→
see appropriate Ex documentation
4. Assembly is the reverse of the disassembly procedure.
"
Caution!
Use only original Hauser replacement parts.
A0001148
Fig. 52: Replacing the device fuse on the power unit board
1 Protective cap
2 Device fuse
1
2