YAMIT E.L.I. AF800N Series, Service Maintenance Manual, Page: 10 / 40

10
6. Maintenance & Periodical Checks
6.1 - 6V (4 x 1.5V) Battery Removal & Installation
The 4 x 1.5V battery enables the electronic control unit's operation. The
battery can last for 3000 flushing cycles, but should be replaced every six
months. Use
ONLY ALKALINE type battery.
1.
Remove the upper cover of the controller.
2. Disconnect and remove the used battery.
3. Connect a new battery according to the correct polarity. The controller
will perform long "beep" sound.
4. Close the upper cover.
5. Perform a flushing cycle by disconnecting the low pressure tube from the
differential pressure indicator (thereby closing the electrical circuit) – re-
connect it immediately as flushing starts.
6. Verify that the hydraulic flushing valve closes after 10 seconds.
7. Perform an additional flushing cycle manually by pushing the
manual
bottom (M on the screen display).
(See Figure 3).
WARNING
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning.
Figure 3: Battery Removal & Installation
6
M
AF800N