NETAJET
™
4G USER MANUAL
5
SAFETY
Safety instructions when using acid/chemicals
ACID HAZARD
When using acid - always observe the acid manufacturer's safety instructions.
WARNING
Always use protective equipment, gloves and goggles when handling fertilizers, acid and
other chemicals!
WARNING
Exceeding the recommended acid concentrations will damage the dosing channels.
WARNING
Substances
such as chemicals for pest/disease control might be corrosive and damage the
NetaJet™ 4G. When using any substance
other than
fertilizers or acids not exceeding the
concentrations in the table above, always observe the manufacturer's instructions for corrosivity.
In case of any doubt, contact your local Netafim™ representative.
CAUTION
High concentrations of some fertilizer combinations might induce crystallization in the NetaJet's
lower manifold and cause clogging of the pipes.
These combinations should never be used in any
concentration in the dual dosing channel (Octa mode only)!
Fertilizer combinations prone to induce crystallization:
•
Calcium nitrate + ammonium sulfate => calcium sulfate
•
Calcium nitrate + potassium sulfate => calcium sulfate
•
MKP + calcium nitrate => calcium phosphate
•
MAP + calcium nitrate => calcium phosphate
•
Phosphoric acid + calcium nitrate => calcium phosphate
When injecting these fertilizer combinations:
•
Make sure to dilute each fertilizer to the allowed concentration in the fertilizer tank prior to injection
through the NetaJet™ 4G.
•
Immediately after each injection of any of the fertilizer combinations above, flush the NetaJet™ 4G
with clean water for at least 2 minutes.
In case of doubt regarding the use of any
combination of
fertilizers, contact your local Netafim™
representative.
ATTENTION
When dosing acid, use a dosing channel fitted with the appropriate components according to
the type
and concentration of acid used*:
For pH correction
For maintenance of drippers
Type of dosing channel
Diaphragm
and O-rings
Nitric acid
(HNO
3)
Phosphoric
acid
(H
3PO4)
Sulfuric acid
(H
2SO4)
Potassium
hydroxide
(KOH)
Acetic acid
(CH
3COOH)
Hydrochloric
(HCl)
Hydrogen
peroxide
(H2O2)
Chlorine (as
(hypochloride
For diluted acid EPDM
<3% <85% <30% <35% <30% <10% <30% <1%
For concentrated acid
Viton
<40% <85% <90% <10% <5% <33% <50% <10%
% is by weight at 21
o
C (70
o
F)
*The table indicates the resistance of the dosing channel components to acid,
and is not a recommendation to use the acids mentioned.
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