D-Net 6550
TM
USER MANUAL
11
MAINTENANCE
Checking the white washer
Frequency:
Before the beginning of each growing season
Action:
1.
Remove the sprinkler from the stand using a 20 mm
spanner.
2.
Visually inspect the white washer at the bottom of the
sprinkler.
During regular operation of the sprinkler, the white washer
gradually wears thinner. Its original thickness is 1.5 mm.
3.
If the white washer has reached half its original thickness
or less, replace it with a new one using a 16 mm spanner
to open the bolt at the bottom of the sprinkler.
NOTE
Make sure to place the white washer in between
the two black washers.
4.
Screw back the bolt using a 16 mm spanner.
5.
Remove the old Teflon tape from the sprinkler thread and
apply 3 layers of new Teflon tape to prevent leakage.
6.
Re-connect the sprinkler to the stand using a 20 mm
spanner.
NOTE
It is recommended to replace the white washer
every 2000 irrigation hours.
1
2
3
