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INJECTION HAZARD
To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pres-
sure Relief Procedure on page 7.
MOTOR WON'T OPERATE
TYPE OF PROBLEM
Basic Fluid Pressure Problems 1. Check pressure control knob setting. The mo-
Basic Mechanical Problems
Basic Electrical Problems
NOTE 1: Thaw sprayer if water or water-based paint has frozen in it, due to exposure to low temperatures, by placing it in a warm
area. Do not try to start sprayer until it has thawed completely. If paint hardened (dried) in sprayer, pump packings must be replaced.
See page 29 (Displacement Pump Repair).
Troubleshooting
WARNING
WHAT TO CHECK
If check is OK, go to next check
tor will not run if it is at the minimum setting
(fully counterclockwise).
2. Check for a clogged spray tip or fluid filter. Re-
fer to separate gun, tip, or fluid filter instruction
manual.
1. Check for frozen or hardened paint in pump
(64). Using a screwdriver, carefully try to rotate
fan at back of motor by hand. See page 17.
2. Check displacement pump connecting rod pin
(66). It must be completely pushed into con-
necting rod (63) and retaining spring (68) must
be firmly in groove of connecting rod. See Fig.
25.
3. Check for motor damage. Remove drive
housing assembly (67). See page 25. Try to
rotate fan by hand.
1. Check pressure control safety circuit.
2. Check electrical supply with volt meter. Meter
must read 105–125 VAC.
3. Check extension cord for damage. Check ex-
tension cord continuity with a volt meter.
4. Check sprayer power supply cord (79) for
damage such as broken insulation or wires.
WHAT TO DO
When check is not OK refer to this column
1. Slowly increase pressure setting to see if
motor starts.
2. Relieve pressure, refer to separate gun, tip,
or fluid filter instruction manual for cleaning.
1. Thaw. Plug in sprayer and turn on. Slowly
increase pressure setting to see if motor
starts. If it doesn't, see NOTE 1, below.
2. Push pin into place and secure with spring
retainer.
3. Replace motor (73) if fan won't turn. See
page 27.
2. Turn pressure control ON/OFF switch to
OFF to RESET. If pressure control safety
continues to trip, see ELECTRICAL
SHORT on page 15.
2. Reset building circuit breaker; replace
building fuse. Try another outlet.
3. Replace extension cord.
4. Replace power supply cord. See page 19.
11
308800
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