Titan POWRTWIN PT12000 Plus DI Mode D'emploi page 21

7. Troubleshooting
7.1 Airless Gun
Problem
A. Spitting gun
B. Gun will not shut off
C. Gun does not spray
7.2 Fluid Section
Problem
A. Pump delivers on upstroke only
or goes up slowly and down fast
(commonly called downstroke
dive)
B. Pump delivers on down stroke
only or goes up fast and down
slowly
C. Pump moves up and down fast,
delivering material
D. Pump moves up and down
slowly when spray gun is shut
off
E. Not enough fluid pressure at
gun
F. Pump chatters on up or down
stroke
* Refer to the Service Manual (part number 2439103, available online) for complete instructions regarding this procedure.
PowrTwin Plus DI
Cause
1. Air in system
2. Dirty gun
3. Needle assembly out of adjustment
4. Broken or chipped seat
1. Worn or broken needle & seat
2. Needle assembly out of adjustment
3. Dirty gun
1. No paint
2. Plugged filter or tip
3. Broken needle in gun
Cause
1. Lower foot valve ball is not seating due to
trash or wear
2. Material too viscous to siphon.
3. Air leaking in on siphon side or damaged
siphon hose. Siphon may be too small for
heavy material.
1. Upper ball is not seating due to trash or wear
2. Lower packing set is worn
1. Material container is empty or material is too
thick to flow through siphon hose
2. Bottom ball stuck to foot valve seat
3. Siphon hose is kinked or loose
1. Loose connections. Bleed valve is open
partially or bleed valve is worn. Lower
packing seat is worn.
2. Upper and/or lower ball not seating
1. Spray tip is worn
2. Outlet filter or gun filter is clogged
3. Low voltage and/or inadequate amperage
4. Hose size or length is too small or too long
1. Solvent has caused upper packing to swell
GB
Solution
1. Inspect connections for air leaks.
2. Disassemble and clean.
3. Inspect and adjust.
4. Inspect and replace.
1. Replace.
2. Adjust.
3. Clean.
1. Check fluid supply.
2. Clean.
3. Replace.
Solution
1* Remove foot valve assembly. Clean and inspect. Test
foot valve by filling with water; if ball fails to seal the
seat, replace ball.
2. Thin material — contact manufacturer for proper
thinning procedures.
3. Tighten all connections between pump and paint
container. If damaged, replace. Switch to larger diameter
siphon set.
1* Check upper seat and ball with water. If ball fails to seal,
replace seat.
2* Replace packing set if worn.
1. Refill with new material. If too thick, remove siphon
hose, immerse fluid section in material, and start pump
to prime. Add thinner to material. Change to bigger
siphon set. Open bleed valve to remove air and restart
pump.
2* Remove foot valve. Clean ball and seat.
3. Straighten.
1. Check all connections between pump and gun. Tighten
as necessary. If material is flowing from bleed hose, close
bleed valve or replace, if necessary. Should none of the
above be evident, replace lower packing.
2* Reseat balls by cleaning.
1. Replace.
2. Clean or replace filter.
3. Check electrical service. Correct as required.
4. Increase hose size to minimize pressure drop through
hose and/or reduce hose length.
1* Replace packing.
19
Troubleshooting