
SAF - 1500 910101-000102
07.2109
Page 14 of 26
MAINTENANCE
General inspection
In order to check the proper operation of the filter, close the low-pressure 1/4" valve to the pressure differential switch for a
period of 5 seconds. This will initiate the self-cleaning cycle: Check that the exhaust valve opens, that the scanner moves
forwards, and when it reaches the limit switch - verify that the exhaust valve closes.
Weekly maintenance:
1. Check that the filter operates properly, following a general inspection.
2. Clean the 3/4" filter (close the 3/4" valve and operate a flushing cycle in order to release pressure and then open the
bowl).
3. Check that there is grease on the drive shaft, and drive bushing. Add grease if necessary.
4. Take care of any leakage from the scanner shaft. If necessary, replace the sealing nut internal O-Ring.
Changing the sealing nut internal O-ring:
1. Close the inlet valve to the filter and release the pressure.
2. Remove the cover (29) from the drive shaft housing (4) by unscrewing the wing nuts (29).
3. If the Suction Scanner is in the outer position, operate a flushing cycle and bring it to the inner position.
4. Remove the Split pin (10) and pull out the connecting pin (9).
5. Operate a flushing cycle.
6. Stop the motor operation when the drive shaft reaches half way of its movement. The drive shaft is now separated from the
Suction Scanner.
7. Unscrew the sealing nut (7.5).
8. Remove the used internal O-ring and clean the O-ring seat.
9. Insert a new O-ring (16 p.24).
10. Apply some grease on the external O-ring and on the shaft.
11. Tighten the sealing nut (14 p.24).
12. Re-connect the drive shaft to the suction scanner shaft.
13. Operate the control board and open the filter inlet valve.
Maintenance prior to long term cessation of filter operation:
The following must be done if the filter will not be in operation for more than a month.
1. Operate a flushing cycle (If possible, with a closed downstream valve).
2. Disconnect the power supply to the control board.
3. Release pressure from the filter.
4. Grease the drive shaft and the drive bushing.
5. Clean the 3/4" control filter.
6. Clean the coarse screen.