Filter
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EZ5000 Series
13
Symptom Possible Cause(s) Corrective Action
Motor runs but won't
prime material
Sprayer builds pressure
but pressure drops
when gun is triggered
Unit primes but will
not build pressure
Gun continues to spray
when trigger is
released
1. Push the spring inside the inlet
valve & push on outlet valve
ball.
2. Tighten clamp.
3. Turn control to prime position.
4. Rebleed pressure valve: Turn
control between ON/OFF posi-
tion and PRIME/CLEAN PUMP
position and allow motor to
run for a few minutes. Then
turn lever to prime position.
5. Clean or replace suction tube
filter.
6. Remove and clean or replace
inlet and outlet valve.
7. Thin, mix and strain all materi-
al to be sprayed.
1. Remove and replace valves as
needed.
2. Tighten clamp.
3. Replace suction filter.
4. Replace filter or tip.
5. Replace with smaller size tip.
6. Replace suction hose assembly.
1. Remove and replace valves as
needed.
2. Turn control to higher setting.
3. Check oil level. If low, fill to
1/4” from top of housing with
10W hydraulic oil (CH #
AL1702).
4. Thin and/or strain material.
5. Remove and clean or replace
valve (SCR).
1. Clean or replace gun valve.
2. Replace gun valve or replace
entire gun.
3. Adjust trigger by adjusting nut
behind trigger. Move nut
towards handle if trigger does
not move. Tighten nut by turn-
ing towards spray tip if trigger
moves too much.
4. Turn filter housing bolts about
1/2 turn counterclockwise.
Troubleshooting Chart
1. Inlet or outlet valve stuck.
2. Suction tube connection loose.
3. Control lever in spray or roll posi-
tion.
4. Air in hydraulic system causing
loss of suction and no diaphragm
movement.
5. Suction tube filter clogged.
6. Inlet or outlet valves dirty or
worn.
7. Material is too thick or not
strained properly.
1. Inlet and/or outlet valves are
worn.
2. Suction tube connection loose.
3. Suction tube or suction filter
clogged.
4. Clogged gun filter or worn tip.
5. Tip is too large for material
being sprayed.
6. Suction hose assembly is dam-
aged.
1.
*Dirty or worn inlet valve.
2. Pressure not turned up high
enough.
3.
*Oil level in the hydraulic hous-
ing is too low.
4. Material is too thick or not prop-
erly strained.
5.
*Dirty, stuck or worn
prime/spray valve causing fluid to
come through bypass tube while
unit is in spray position.
1. Paint build up inside gun valve
or gun valve is dirty.
2. Gun valve is worn.
3. Gun trigger is not properly
adjusted.
4. Filter housing is tightened down
too much.
* = Service Center Recommended