Pump; Pump Diaphragms - Goldacres ZETA Series Operator And Parts Manual

Pump

The pump is critical to the sprayers
performance. Its correct operation and
maintenance is essential to ensure optimal
sprayer performance.
When the pump is operating, the oil should be
visible in the bowl.
NEVER OVERFILL PUMP WITH
!
OIL AS DAMAGE TO SEALS AND
BOWL MAY RESULT .
The pump will perform optimally operating
between 400 and 540 RPM. At lower revs
excessive pulsation will occur, while pump and
diaphragm damage can result at higher revs.
DO NOT OPERATE ABOVE
!
540 RPM .
Whilst the pump is running, frequently check
the oil level and colour. A change in either
colour or level indicates probable damage
to diaphragm or valves. STOP THE PUMP
IMMEDIATELY .
Inspect all hoses to make sure they are the
correct size, fitted securely and that there is no
throttling or leaking.
Prevent starting the pump under pressure.
Make sure the PTO shaft is always protected
with its cover to prevent access.
Make sure the strainer in the suction filter is
clean and correctly installed.
Regularly lubricate the PTO shaft according
to recommendations (see 'PTO SHAFT') to
prevent the shaft from binding.
Always flush pump with clean water at the
end of each spraying day. Prolonged chemical
contact can severely damage seals and
diaphragms.
Regularly check the pump mounting bolts.
Change the pump oil after the first 50 hours
of operation and then after every 300 - 350
hours. Be careful to use the correct oil (use
SAE 30W40 motor oil) and do not overfill.
Rotate manually (by hand) to remove air locks
when filling with oil.
Do not leave water in the pump if the sprayer
is to be left in a cold environment. The water
may freeze and cause damage to pump if
pumping is attempted while water is frozen.
Empty pump of all water (run the pump dry for
15-20 seconds) and cover pump (ie with bag)
to ensure this situation does not arise. If this
has not been done, and there is a possibility
there may be frozen water in the pump and/or
in the lines, wait until any ice has completely
thawed before using pump. Need to be able
to turn the pump over by hand before starting
pump.
ALWAYS WEAR PROTECTIVE
!
CLOTHING RECOMMENDED ON
THE CHEMICAL LABEL PRODUCT
FLUSH PUMP WITH CLEAN
!
WATER BEFORE DISMANTLING
REMOVE AIR FROM AIR DAMPER
!
CHAMBER BEFORE REMOVING
AIR DAMPER CHAMBER COVER

Pump Diaphragms

The pump diaphragms are a wearing
component to be replaced at some stage. Life
expectance depends upon its operation and
maintenance and it suitability for the task.
The main causes of premature diaphragm
failure are:
● Blocked or incorrectly fitted suction filter
restricting flow to the pump;
● Incorrect air damper chamber pressure
● Running pump at speeds greater than 540
RPM
● Exceeding the pressure limit of the pump
● Failure to wash chemicals from the pump
after use
● Incompatibility of the diaphragm material
and the chemical used
● Insufficient lubrication of the PTO shaft
or binding of the shaft which can cause
a side thrust to the internal components
of the pump and overheat the pump and
diaphragms.
14