Raven SCS 4600, Operator'S Manual

Page: 52 / 70

47
13) CANNOT VARY RATE IN MANUAL
OPERATION OR IN AUTO.
14) SPRAYER PRESSURE IS CORRECT
BUT RATE IS LOW.
15) TOTAL VOLUME DOES NOT
REGISTER.
16) TOTAL VOLUME REGISTERS FLOW
INACCURATELY.
17) MOTORIZED CONTROL VALVE
ROTATES MORE THAN 1/4 TURN.
18) WATER INSIDE COVER OF
MOTORIZED CONTROL VALVE.
19) BOOM VALVE(S) WILL NOT OPERATE.
20) CAN'T OBTAIN GPS SIGNAL
1) Check cabling to motorized Control
Valve for breaks.
2) Check connections in cabling for
cleanliness.
3) Verify that there is voltage at the
valve connector by placing MASTER
switch ON; AUTO/MAN switch
to MAN; and POWER ON.
Manually operate INC/DEC switch
to verify voltage.
4) Verify that valve is turning, if not,
replace Control Valve.
1) Verify that nozzle strainer screens
or check valves are not plugged.
2) Verify that pressure at each boom is
the same.
3) Verify all nozzles are of proper and
same orifice size. See Page 14 of
Installation Manual.
1) Check Flow Meter/Encoder Cable for breaks
and shorts. See Appendix 4 for test
procedure.
2) Check internals of Flow Meter/Encoder; clean
and adjust. See Appendix 5 for Flow Meter
cleaning and adjustments.
3) Replace Flow Meter Transducer/Encoder.
1) Verify that arrow on Flow Meter is
pointing in direction of flow. See
Appendixes 5 and 6.
1) Replace motorized Control Valve.
1) Replace Isolation Flange Assembly
and coupler shaft.
2) Replace entire motorized Control
Valve if PC board or motor is
corroded and will not run.
1) Check cable for wires with breaks.
2) Check connectors for cleanliness.
3) Check BOOM switch and MASTER switch
for operation.
4) Replace Boom Valves.
1) Verify connections to GPS receiver.
2) Verify GPS baud rate and stop bits are
properly configured.