User's Manual

Troubleshooting
3A2593B Repair 41
Excessive leakage around hydraulic
motor piston rod wiper
Piston rod seal worn or damaged. Replace hydraulic motor piston rod wiper and seal.
Sprayer overheats
Paint buildup on hydraulic components Clean hydraulic components.
Hydraulic oil level is low Fill with hydraulic oil. See operation manual.
Excessive hydraulic pump noise
Low hydraulic fluid level Shut off sprayer. Add fluid*.
Pulleys loose on hydraulic pumps Remove belt guard. Check and tighten loose pulley.
Display does not turn on
Main power switch is not turned on Turn main power switch on.
Main fuse is blown Replace fuse. See Fuse Replacement, page 29.
Cable between display and board disconnected
or damaged
Reconnect or replace touch pad.
Display board failure Replace display board.
Gallon (liter) counter not
adding fluid volume
Fluid pressure not high enough Must be over 800 psi (55 bar) for counter to add.
Broken or disconnected wire
Check wires and connections. Replace any broken
wires.
Missing or damaged magnet Reposition or replace magnet.
Bad sensor
Replace sensor. See Hydraulic Motor Replacement,
page 19.
Distance not adding properly
(MEASURE mode will be inaccurate
and speed will be wrong)
Machine not calibrated Perform calibration procedure. See Operation manual.
Rear tire pressure is too low or too high Adjust tire pressure to 55 +/- 5 psi (380 +/- 34 kPa).
Gear teeth missing or damaged
(pump side only)
Replace distance gear/wheel hub.
Distance sensor is loose or broken Reconnect or replace sensor.
Mils not calculating
Distance sensor See “Distance not adding properly”.
Gallon counter See “Gallon (liter) counter not adding fluid volume”.
Bad or damaged control board Replace control board.
Pressure control knob does not rotate Knob is jammed
Pull back cover where remote cable connects to
hydraulic pump and turn counter-clockwise (ccw) until
free.
Pressure control knob rotates freely
with no pressure change
Set screw at hydraulic pump connection is
loose
Remove cover and tighten set screw.
Reassemble cover.
Remote cable is broken or disconnected Replace or reconnect cable.
Gun does not trigger
Main power switch is not turned ON Turn main power switch ON.
Gun selector switch is OFF Turn gun selector switch ON.
Display is in AUTO MODE and speed is less
than 0.7 mph (1.1 kph)
Increase ground speed to be greater than 0.7 mph
(1.1 kph).
System pressure is too low
Increase fluid pressure up to at least
1000 psi.
Gun cable is disconnected or broken Reconnect or replace cable.
Gun trigger control switch is disconnected or
broken
Reconnect or replace gun trigger control switch.
Disconnected or broken wires from control
board to solenoid
Reconnect or replace wires.
Gun triggering is slow
Gun cable is pinched or kinked Change gun cable routing or replace cable.
System pressure is too low Increase fluid pressure up to at least 1000 psi.
Problem Cause Solution