12
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English
Problem
A. Pump will not run and green
light is out
B. Pump will not run and green
light is on
C. Pump runs but does not prime.
D. Pump primes and is returning to
the material container through
the bypass/return tube, but
nothing is coming out of the
gun.
E. Spray pattern is too light.
F. Spray pattern is too heavy
G. Pulsating spray pattern while
using thin materials.
H. Material is leaking on or from
the drip tray or cupholder.
Cause
1. Pump is not fully locked into turbine.
2. Turbine is not plugged in.
3. Fuse is blown in the pump.
4. Faulty or loose wiring.
1. Faulty motor.
2. Faulty board.
1. Inlet valve is stuck.
2. Siphon tube is not fully inserted into the inlet
fitting.
3. Siphon tube not fully immersed in the spray
material.
4. Pressure setting knob not set to PRIME.
5. Inlet fitting is not tightened properly.
6. Quick-connect inlet fitting is damaged or
dirty.
7. inlet valve is worn or contains material
buildup.
8. Siphon tube or filter is clogged.
9. Faulty outlet valve.
1. Pressure too low.
2. Spray material is too thick.
3. Pressure setting valve poppet and set are
worn.
1. Gun not adjusted properly, or too small of a
projector set is being used.
2. Pressure too low.
3. Spray material is too thick.
1. Pressure too high.
2. Gun not adjusted properly.
1. Pressure too low, too much needle travel on
the spray gun.
1. Seal and piston are worn.
Solution
1. Ensure there is not something binding under the
pump preventing it from fully seating and ensure the
connector cover has engaged (clicked over) the locking
tabs on the pump.
2. Check turbine lighted cord, it should be lit. Plug in.
3. Remove heel cover and lubricate eccentric (see
Service,
Replacing the Seal and Piston
section). Replace the
fuse. If it blows repeatedly, the seal must be serviced
immediately. Use only fuse type specified in the Parts
List. Using other types of fuse may cause damage to the
pump.
4. Take your Transfer Pump to an authorized service center.
1. Replace the motor (see
Service, Replacing the Motor
section).
2. Replace the board.
1. Remove siphon tube and depress inlet valve with some
long, slender tool.
2. Fully insert and secure the siphon tube into the inlet
connection.
3. Immerse the siphon tube into the spray material.
4. Turn the pressure setting knob fully counterclockwise.
5. Tighten the inlet fitting to 160-180 in-lbs.
6. Clean or replace.
7. Replace the inlet valve (see
Service, Replacing the Inlet
Valve
section).
8. Clean the siphon tube and filter.
9. Replace the outlet valve (see
Service, Replacing the
Outlet Valve
section).
1. Turn the pressure setting knob clockwise to increase.
2. See recommended thinning section in spray gun
manual.
3. Replace (see
Service, Replacing the Pressure Setting
Valve
section).
1. See spray gun manual for gun adjustment procedures
and projector set information.
2. Turn the pressure setting knob clockwise to increase.
3. See recommended thinning section in spray gun
manual.
1. Turn the pressure setting knob counterclockwise to
decrease.
2. See spray gun manual for gun adjustment procedures.
1. Increase pump pressure to 4 or 5, and decrease the
needle travel on the spray gun.
1. Replace the piston and seal (see
Service, Replacing the
Seal and Piston
section).
Troubleshooting
