Pressure Control Switch Diagnostics
26
313036H
Pressure Control Switch Diagnostics
LTS 15, LTS 17, ProLTS 17 and ProLTS 19
If pressure control switch diagnostics reveal a damaged pressure control, replace it with the correct Pressure Con-
trol Switch Kit, see page 28. LTS 15 and LTS 17 sprayers have different pressure control kits because stall pressure
is preset at the factory.
1.
Unplug power cord and Relieve Pressure, page 11.
2.
If paint is leaking from pressure control switch
between pressure control knob and base, replace
pressure control switch.
3.
ProLTS 17 and ProLTS 19: Remove front cover,
yoke, and pins. Disconnect pressure control switch
connector from control board.
LTS 15 and LTS 17: Remove enclosure and discon-
nect pressure control switch connector from control
board. Use finger to support control board when
removing pressure control switch connector.
4.
Use ohmmeter to check for no continuity between
sprayer ground and both pressure control terminals
in connector. If either pressure control switch lead is
shorted to ground, pressure control switch wires
have been pinched to ground during assembly and
pressure control switch needs to be replaced.
5.
Use Ohmmeter to measure across two terminals in
pressure control connector. No continuity or open
circuit should exist when pressure control knob is at
lowest pressure setting (full counter-clockwise).
Replace pressure control switch if continuity exists.
6.
Using ohmmeter to measure across two terminals in
pressure control connector. Continuity or closed cir-
cuit should exist when pressure control knob is set
at maximum pressure (full clockwise). Replace
pressure control switch if no continuity exists.
Summary of Contents for 257060
Page 41: ...Notes 313036H 7 Notes...
