Solenoid Removal And Installation - YAMIT AF-9800N Series Service Maintenance Manual

6.2 - Solenoid Removal & Installation
The solenoid hydraulically controls the flushing valve's operation.
1. Set the main switch at the control panel to "0" position.
2. Close the inlet and outlet valves of the filter and verify that filter is drained prior
to service.
3. Disconnect the solenoid control tubes.
4. Remove the fittings from the damaged solenoid.
5. Remove the 4 screws attaching the electric connection box
6. Disconnect the electrical wiring from the connection box terminals.
7. Remove the nut from the solenoid lower section.
8. Pull the solenoid out of the control assembly.
9. Insert a new solenoid into the control assembly.
10. Install the nut on the solenoid lower section.
11. Install the fittings on the ports of the new solenoid.
12. Connect the solenoid control tubes.
13. Connect the electrical wiring to the connection box terminals.
Take precautions while operating the filter as the filter may enter a flushing
mode automatically, without prior warning
14. Open the inlet and outlet valves of the filter
15. Set the main switch at the control panel to "1" position.
16. Perform a flushing cycle by disconnecting the low pressure tube from the
differential pressure indicator (closing of the electrical circuit) – re-connect it
immediately as flushing start.
17. Verify that the hydraulic flushing valve closes after 15 seconds.
18. Perform a flushing cycle by pressing the MANUAL FLUSH switch at the control
panel.
WARNING
AF9800N
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