Pentair FLECK 3900 NXT - Cleaning the Injector

Installer Manual Fleck 3900 - NXT - Maintenance
Ref. MKT-IM-015 / B - 08.06.2018 91 / 126
9.2.7. Injector cleaning
No. Operation
A Using a 4 mm Allen wrench, unscrew (1).
B Using a 24 mm wrench, remove the tube (9).
C
Using a 4 mm Allen wrench, unscrew (10) and remove the connector (8), the o-ring (7) and
the injector nozzle (6).
D
Using a 4 mm Allen wrench, unscrew (4) and remove the T-tube (5), the o-rings (2 and 11)
and the injector (3).
E
Clean the injector (3) and the injector nozzle (6) using compressed air, a soft brush or
possibly a pin.
F Lubricate on the o-rings (2), (7) and (11) using silicone grease.
G Reverse above procedure steps to rebuild.