amiad Filtomat MG112, Installation, Operation And Maintenance Instructions

Page: 14 / 31

MG112
910101-000516 / 06.2019 Page 14 of 31
Maintenance
NOTE: Depressurize the filter before maintenance (close inlet, and then outlet valve).
Checking the Filter
1.
Unscrew the filter lid's long bolt; for safety reasons do not remove its nut!
2. Unscrew and remove the other nuts from the filter’s lid bolts. Do not remove the long bolt's nut!
3. Open the lid by pulling it carefully; leave it to hang on the long bolt . Do not remove the long bolt’s nut!
4. Extract the coarse screen and clean if necessary.
5. Extract the fine screen and clean if necessary. Cleaning may be performed by hosing the screen from outside-in,
and/or with a nylon brush.
6. Check the O-rings of the fine screen and apply grease, if necessary.
7. Reassemble the fine screen and the coarse screen.
NOTE: Check that the dirt collector shaft is properly aligned in the bearing.
8. Close the filter's lid by turning it back to its original close position and fasten the nuts.
9. Perform the procedure described on the " First Operation of Filter" paragraph of this document.
Winterization
Filter operations should be suspended in climates where the filter is exposed to freezing temperatures.
1. Check that the outlet isolating valve is closed and perform two manual rinses.
2. Close the inlet valve to the filter and release the pressure.
3. Remove all drain lines from the valves and rinse controller. These should be drained of water and re-connected.
4. Remove the following items from the filter and store in a dry place:

Top lid assembly

Coarse and fine screen assembly
5. Apply grease to the O-rings of the fine screen before storing.
At the beginning of the operation season, reassemble the filter elements and check the " Preparations" and the " First
Operation of the Filter" paragraphs of this document.