PROline Promass 80 9 Trouble-shooting
Endress+Hauser 77
9.8 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 on the power unit board (Fig. 30).
The procedure for replacing the fuse is as follows:
1. Switch off power supply.
2. Remove the power unit board
→ Page 73, 75
3. Remove 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 / 250 V; 5.2 x 20 mm
– Ex-rated devices
→ see the Ex documentation.
4. Assembly is the reverse of the disassembly procedure.
" Caution:
Use only original Endress+Hauser parts.
Fig. 30: Replacing the device fuse on the power unit board
1 Protective cap
2 Device fuse
F06-xxxxxxxx-03-xx-06-xx-000
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