57
Dosing pin
Horseshoe
Fit dosing pin into
the horseshoe
4.
Remove the piston from the dosing chamber.
5.
Remove the O-ring on the dosing pin.
Take care: do not remove or damage the white
spacer rings
.
6.
Once the O-ring has been removed, wet the dosing pin with water and insert it into the
dosing chamber. Note that the second ring should still be just visible.
7.
Insert the dosing chamber into the dosing unit as shown below.
8.
The dosing pin should be fitted into the horseshoe as shown below. Pull gently on the
dosing chamber; you should feel resistance.
Replace this O-ring only
2
nd
ring should still be
visible
