Raven AccuFlow Vortex, Инструкция по установке и эксплуатации

Страница: 79 / 98

Troubleshooting: 75
TROUBLESHOOTING
7
Motorized control valve
rotates more than 1/4 turn.
Replace the motorized control valve.
Pressure and temperature
gauge readings indicate that
NH
3
passing through the
AccuFlow flow meter is not in a
liquid state.
1. Check that the vapor tubes have been affixed to the applicator knives
correctly and that the openings for NH
3
are not plugged or filled with
debris.
2. If additives such as N-Serve or ACA have been or are being used with
the AccuFlow system, disassemble and clean Vortex cooler chamber. See
Chapter 6, Service and Maintenance , for more information about
servicing the Vortex cooler.
3. Determine if the operating pressure drop is within tolerances. See step 3
in “Raven control console reports inaccurate AccuFlow measurements
(i.e. console indicate more product applies than actual product removed
from tank”.
HP+ pump not running. 1. Check the HP boost pump hydraulic connections and verify proper
connection to remote hydraulics on tractor. Inlet (small hose) should be
connected to remote pressure and return (large hose) should be
connected to remote tank. During operation, the return line from the
AccuFlow hydraulic motor and check valve should be soft in comparison
to the inlet hose.
2. Ensure tractor remote ports are engaged and pressure is adjusted to
provide sufficient flow rate to HP boost pump. Refer to the Verifying
AccuFlow HP+ Operation section on page 58 for details on adjusting the
remote tractor hydraulics.
Low supply pressure. Triggered when pump inlet pressure falls below set value (20 psi default) for
5 seconds. Pump is shut off after 15 seconds when operating in 'Auto' mode
only. Error message only is displayed when in 'Manual'. Likely causes are
empty nurse tank, failed Pressure 1 transducer/cable/connection, or
plugged strainer screen.
NOTE: Setting pressure value to zero will disable.
Pump fault Triggered when pump is not building pressure after 10 seconds. Pump is
shut off after 60 seconds. Likely causes are tractor hydraulics off or reversed,
or incorrect Pressure transducer calibration.
Max pressure Triggered when pump pressure exceeds setting. Control temporarily ramps
pump rpm down and then resumes normal control. Reduce travel speed.
No pressure 1 or pressure 2
signal - no alarm for P2 fault
but on screen as '----')
Triggered when there is no signal voltage present from transducer. Failed
transducer or cable or disconnected are likely causes.
Master valve failed open or
closed.
Triggered when control node does not sense the expected change in
master control valve's amperage draw upon reaching the expected end of
travel. Likely causes are cable connection or valve failure.
Section valve failed open or
closed.
Triggered when status feedback signal does not match expected valve
position. Likely causes are cable connection or valve failure.
Valve leaking. Tighten the stem nuts.
Issue Resolution