Adjustment Of Ecp Operating Unit; Adjustment Of Constant Pressure; Operating The Control Unit While Spraying - Hardi COMMANDER Plus Series Operator's Manual

Adjustment of ECP operating controls
Distribution
Valves
Constant Pressure
Adjusting Screws
C
B B
A. Operating switch for main on/off
B. Operating switch for distribution valves
C. Pressure control switch (to lower or raise)
Before spraying, adjust the ECP operating unit
using clean water (without chemicals).
1. Choose the correct nozzle (pp. 33-34). Make sure
that all nozzles are the same type and capacity.
2. Put the tractor in neutral and adjust the P.T.O. r.p.m.
until the number of revolutions of the pump corre-
sponds to the intended traveling speed. Remember
the number of revolutions on the P.T.O. must be kept
between 300-600 r.p.m. (540 r.p.m. pump) or 650-
1100 (1000 r.p.m. pump) to ensure correct operation
of the HARDI-MATIC system.
3. On-off switch A is "ON" against green symbol (down
position).
4. All distribution valve switches B are also "ON"
against green symbol (down position).
5. Hold pressure regulating switch C down (-) until
handle stops rotating. This will be the "minimum
pressure" setting.
6. Hold pressure regulating switch C up (+) until de-
sired pressure is shown on the boom pressure
gauge.
28
Operation
System Pressure
Gauge
Pressure
Control
Valve
A
B B B
®
HARDI COMMANDER

Adjustment of constant pressure

Note: Adjust the constant distribution boom pressure
one section at a time as follows: (Start with the
valve turned closed before adjusting).
1. Shut-off the first boom distribution valve switch B.
2. Turn the adjusting screw(s) until the control pres-
sure gauge again shows the same pressure as in
step 6 (to left) (Turn the screw clockwise for higher
pressure, counterclockwise for lower pressure).
3. Turn the first boom distribution valve switch B back
on.
4. Repeat steps 1-3 for the remaining boom distribution
valves.
Note: Hereafter adjustment of the constant boom
pressure will only be needed if you change to nozzles
with other capacities, but not required if only changing
pressure or application rate using the same nozzles.

Operating the control unit while spraying

In order to shut off the entire boom, flip on-off switch A
to the off (red) symbol (up position). This returns all the
pump outputs to the main tank through the return
system. The diaphragm anti-drip valves ensure instan-
taneous closing of all nozzles.
In order to shut off one or more sections of the boom,
switch the relevant distribution valve B to off position.
The constant pressure system ensures that the pres-
sure does not increase in the sections which are still
open.
In case of electrical failure, it is still possible to manu-
ally override all functions of the operating unit. To
operate manually, disconnect the multiplug from the
ECP control box first and operate the handles by hand.
It is possible to change pressure and turn boom sec-
tions on or off.
Note: Since the on-off switch normally operates by
shutting off all the boom distribution valves, you will
need to manually shut off all the distribution valves to
shut off the complete control unit manually.
IMPORTANT! When the sprayer is stored,
the ECP control box and the multiplug must
be protected against moisture and dirt. A
plastic bag may be used to protect the multi plug.
Store the control box in a clean dry place.
OPERATOR'S MANUAL