Self Cleaning Filters; Adjustment Of Air Pressure In Pressure Damper - Hardi NAVIGATOR 550M Operator's Manual

4.15 Self Cleaning Fil ters
This fi lter automatically fl ushes out particles and chemical deposits,
re duc ing routine main te nance, nozzle plugging and operator exposure.
No ad just ments are required but different mesh screens may be installed
for various types of products.The mesh size of the fi l ter in use should
al ways be small er than the fl ow av er age of the noz zles used.
Self-Cleaning Filter
Operating Diagram
1. From pump
2. Double fi lter screen
3. Guide cone
4. To operating unit
5. Replaceable restrictor
6. Return to tank
Choice Of Correct Restrictor for S.C.F.
It is important to have a large fl ow though the self clean ing fi lter. This
is achieved by choos ing the restrictor size in re la tion to the liquid
con sump tion of the spray boom.
The hose (A) is un screwed from the self-clean ing
fi lter. Be careful not to lose the seal ball or spring
when the restrictor is put in the hose and the hose
is re fi t ted. If the re quired working pres sure can not
be ob tained, the restictor is too large. 4 Restrictors
are supplied. Use the green one (larg est or i fi ce) fi rst.
Choose the next smaller restrictor. Start with a black
one, then a white and fi nal ly a red one.

4.16 Adjustment of Air Pressure in Pressure Damper

The air pressure in the damper on the 1303 pump
is factory preset at 30psi (2 bar). This is suitable
for nozzle spray pressures between 45 psi (3 bar)
and 225 psi (15 bar). If different nozzle pressures
are required set pressure damper at pressures
indicated.
34 HARDI
(1303 Pump Only)
®
NAVIGATOR 550M, 800M, 1000M DIAPHRAGM OPERATOR'S MANUAL
PSI (BAR) PSI (BAR)
20-45 (1-3) 0-15 (0-1)
42-255 (3-15) 15-45 (1-3)