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AF9800
6.4 – Hydraulic Piston Assembly Removal & Installation
The hydraulic piston enables the linear movement of the dirt collector.
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 rained
prior to service.
3.
Disconnect the control tube from the piston assembly aft section.
4.
Remove the six nuts and washers connecting the piston assembly to the
filter housing.
5.
Carefully remove the piston assembly.
6.
Remove the seal from the old piston assembly forward section.
7.
Position the forward seal into the new piston assembly.
8.
Lubricate forward seal with silicon grease.
9.
Carefully slide the new piston assembly into the filter housing.
10. Install the six nuts and washers connecting the piston assembly to the
filter housing.
11. Connect the control tube to the piston assembly aft section.
Take precautions while operating the filter as the filter may enter a flushing
12. Set the main switch at the control panel to "1" position.
13. Open the inlet and the outlet line valves.
14. Check for leaks.
15. 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.
16. Verify that the hydraulic flushing valve closes after 15 seconds.
17. Perform a flushing cycle by pressing the MANUAL FLUSH switch at the
control panel.
Figure 7: Retrait et installation du vérin hydraulique
WARNING
mode automatically, without prior warning.
13
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