Operator's Manual

BOOM CONTROL VALVE:

IMPORTANT: Before performing any

maintenance, make sure electrical power to the

Pump and Boom Control Valves have been shut

off for several minutes. This will relieve line

pressure.

 Keep all electrical connections and motor clean

at all times.

 A protective coating may be applied to the

completed electrical connections, if desired.

INSPECT VALVE CONE AND O-RING'S:

See parts drawing (FIG. 8, page 22) for reference.

1. Flush the sprayer with clean water and open

all Boom Control Valves. Shut sprayer engine OFF.

2. Remove fork and remove hose for the Boom

Bypass valves. When the housing is drained make

sure everything is clear from the hose.

3. Start the sprayer. There should not be any

flow of liquid through the Boom Bypass passage.

If there is any leakage, the valve cone must be

changed. Shut sprayer engine OFF.

MAINTENANCE

TROUBLESHOOTING GUIDE (CONT'D)

NO. PROBLEM CORRECTIVE ACTION

13 CANNOT VARY RATE IN 1. Check cabling to hydraulic Control Valve

MANUAL OPERATION OR IN for breaks.

AUTO 2. Check connections in cable line 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 with

Booms OFF; and Power switch to ON.

Manually operate INCR/DECR switch to

verify voltage.

14 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.

15 TOTAL VOLUME DOES NOT 1. Check Flow Meter Cable for breaks and

2. Check internals of Flow Meter; Clean and

adjust. See pages 17 and 18.

3. Replace Flow Meter Transducer.

16 TOTAL VOLUME REGISTERS 1. Verify that arrow on Flow Meter is pointing

FLOW INACCURATELY in direction of flow.

2. See page 17.