Advanced Troubleshooting
24
313036H
Motor runs and pump cycles,
but pressure does not build
up.
Intake valve or outlet valve is
not seating properly.
Remove and clean inlet valves and outlet valves.
Replace if necessary. See List of Kits, page 28.
Pump packings are worn or
damaged.
Check for leaking around pump.
ProLTS 17 and ProLTS 19: Replace pump
packings. See List of Kits, page 28.
LTS 15 and LTS 17: Replace complete pump.
See List of Kits, page 28.
Specific Problem
Cause
Solution
General Problem: Excessive Pressure Build Up
Specific Problem
Cause
Solution
Prime/Spray Valve actuates
automatically, relieving
pressure through drain tube.
Pressure control switch has
pinched wires, or switch is
worn.
Replace pressure control switch using Pressure
Control Switch Kit, page 28.
Water or paint entered
pressure control switch or
shorted control board.
Use Pressure Control Switch Kit, to replace
switch. See List of Kits, page 28.
Control board failed.
See Control Board Diagnostics, page 27.
Replace damaged control board using Control
Board Kit, page 28.
Summary of Contents for 257060
Page 41: ...Notes 313036H 7 Notes...
