SAF
– 4500
910101-000341 / 07.2019
Page 17 of 26
The drive shaft housing and coarse screen:
Dismantling:
1.
Close the inlet and outlet valves of the filter and release pressure.
2.
Disconnect power supply from the control board.
3.
Dismantle the suction scanner and fine screen as described previously.
4.
Pull out the plug from the solenoid coil (60).
5.
Remove the limit switch sling (6 on page 22) from the drive shaft housing by unscrewing the bolts (14 on page 22).
Carefully put the limit switch sling near the filter to avoid any damage to the electrical wires.
6.
Disconnect the tube (70) from the solenoid valve (60) and from connector (44).
7.
Disconnect the drain pipe from the exhaust valve.
8.
Remove the drive shaft cover (35) by unscrewing wing nuts.
9.
Remove the drive unit (30) from the drive shaft housing (14) by unscrewing the nuts (33) from the bolts (31). By doing so
the drive shaft key (29) will be pulled out.
10.
Dismantle the drive shaft housing (14) from the flushing chamber flange (3) by unscrewing the bolts (15).
11.
Remove the rest of the flange bolts and pull out the flushing chamber assembly which includes: flushing camber (3),
coarse screen (7), screens adapter (9) and screens adapter seal (10).
Assembly:
1.
Place the coarse screen (7) in its seat in the flushing chamber.
2.
Place the screens adapter (9) on the flushing chamber and the coarse screen.
3.
Attach the screens adapter seal (10) to its place with its flat side, using some grease (as adhesive material).
4.
Attach the flushing chamber o-ring (6) to its place using some grease (as adhesive material).
5.
Apply some grease on the o-ring of the upper bearing (4).
6.
Insert the flushing chamber assembly into its place. Use the centering pin to locate the flange in its position.
7.
Tighten the flange to the filter housing with the side bolts only (11).
8.
Apply some grease on the o-rings (39 & 40) of the shaft sealing nut (38) and tighten to its place.
9.
Install the drive shaft housing, using the rest of the flange bolts (15).
10.
Insert the suction scanner (18) and the fine screen (17) as described previously.
11.
Connect the drive shaft (3 on page 22) to the scanner shaft using the connecting pin (19) and split pin (20).
12.
Make sure the drive shaft key (29) is fitted properly in the gear box. Thread the drive shaft through the drive unit and
make sure that the drive shaft groove is adjusted in accordance with the drive shaft key.
13.
Connect the drive unit (30) to the drive shaft housing (14) with the bolts (31) and tighten them.
14.
Connect the pilot tube between the solenoid valve (60) and the control filter connector (52).
15.
Assemble the limit switch sling (6 on page 22) in its place and push in the plug of the solenoid coil.
16.
Connect the drain pipe to the exhaust valve (68).
17.
Operate the control board and make sure the filter is operating properly.
18.
Open the inlet and outlet valves and recheck filter operation.
