Operator's Manual

18
MAINTENANCE
TROUBLESHOOTING GUIDE (CONT'D)
13 RATE INACCURATE OR 1. Verify that all numbers "keyed" in Console
UNSTABLE are correct. Verify SPEED is registering
accurately. If SPEED is inaccurate, refer to
Troubleshooting Problem 11.
2. In MAN (Manual) operation, verify that RATE
display (GPA) holds constant when SPEED
is held constant. If not, refer to Trouble-
shooting Problem 17.
3. In MAN (Manual) operation, check low end
and high end pressure range.
If pressure cannot be adjusted manually,
refer to Troubleshooting Problem 14.
4. If problem persists, return Console to Raven,
Inc. to replace Processor Board Assembly
14 CANNOT VARY RATE IN 1. Check cabling to hydraulic Control Valve
MANUAL OPERATION OR IN for breaks.
AUTO 2. Check connections in cabline for cleanliness
3. Verify that there is voltage at the valve
connector by placing MASTER switch ON'
RATE 1/RATE 2/MAN switch to MAN; and
Power switch to ON. Manually operate INCR/
DECR switch to verify voltage.
4. Verify that valve is turning. If not, replace
hydraulic Control Valve motor assembly.
15 SPRAYER PRESSURE IS 1. Verify that nozzle check valves are not
CORRECT BUT RATE IS LOW plugged.
2. Verify that pressure at each bottom is the
same.
3. Verify all nozzles are of proper and same
orifice size.
16 TOTAL VOLUME DOES NOT 1. Check Flow Meter Cable for breaks and
REGISTER shorts. See page 14 for test procedure.
2. Check internals of Flow Meter; Clean and
adjust. See pages 14 and 15.
3. Replace Flow Meter Transducer.
17 TOTAL VOLUME REGISTERS 1. Verify that arrow on Flow Meter is pointing
FLOW INACCURATELY in direction of flow.
2. See pages 14 and 15.
18 BOOM SOLENOID(S) WILL NOT 1. Check cable for wires with breaks.
OPERATE 2. Check connectors for cleanliness.
3. Check BOOM switch and MASTER switch
for operation.
4. Service Boom Solenoid Valve