Replace A Fuse - Hach WPC-21 Manual Del Usuario

5. Close and attach the electrical access panel with the two ¼-turn screws.
6. Set the power switch to on.
7. Close the enclosure door. Tighten all four captive screws that attach the enclosure door.

Replace a fuse

Fire hazard. Use the same type and current rating to replace fuses.
Electrocution hazard. Remove all power from the instrument and relay connections before this
maintenance task is started.
Items to collect:
• Fuse, 5 x 20 mm T, 0.500 mA, 250 V
• Phillips screwdriver
1. Open the enclosure door. Loosen all four captive screws that attach the enclosure door.
2. Set the power switch to off.
3. Open the electrical access panel. Turn the two ¼-turn captive screws only ¼ turn.
4. Replace the fuse. Refer to the illustrated steps in
5. Assemble the instrument. Do the illustrated steps in
6. Close and attach the electrical access panel with the two ¼-turn screws.
7. Set the power switch to on.
8. Close the enclosure door. Tighten all four captive screws that attach the enclosure door.
Figure 11 Replace a fuse
D A N G E R
D A N G E R
Figure 11.
Figure 11 in reverse order.
English 21