Hach FL1500, Руководство пользователя

Страница: 41 / 48

Maintenance
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Maintenance schedule
Table 17 shows the recommended schedule of maintenance tasks. Facility requirements and
operating conditions may increase the frequency of some tasks.
Table 17 Maintenance schedule
Task As necessary
Clean the instrument on page 39 X
Replace the fuses on page 39 X
Replace the internal desiccant on page 40. X
Replace the external desiccant cartridge (if applicable). Refer to Installation for Flo-Dar or Flo-
Tote sensors on page 18
X
Clean the instrument
N O T I C E
Never use cleaning agents such as turpentine, acetone or similar products to clean the instrument including the
display and accessories.
Clean the exterior of the instrument with a moist cloth and a mild soap solution.
Replace the fuses
D A N G E R
Electrocution hazard. Remove all power from the instrument and relay connections before this
maintenance task is started.
D A N G E R
Fire hazard. Use the same type and current rating to replace fuses.
The instrument contains fuses for the power and for the relays. Refer to Specifications on page 3. A
blown fuse can be an indication that the instrument has a problem and that service is necessary.
1. Remove the power to the instrument.
2. Remove the power to the relay connections.
3. Open the access door. Refer to Open the access door on page 12.
4. Remove the high-voltage barrier.
5. Replace the fuse with a fuse of the same type and rating. Refer to Figure 19 and Replacement
parts and accessories on page 42.
6. Install the high-voltage barrier.
7. Install the access door.
English 39