No Output; Excessive Pressure Fluctuations - Graco Ultra 1000 Instructions-Parts List Manual

No Output
rype of Problem What to Check
Aotor runs and pump strokes
1 .
Check paint supply.
If check is OK, go to the next check
hotor runs but pump does
lot stroke
12.
Check for clogged intake strainer.
1
3. Check for loose suction tube or fittings.
are seating properly. See page 30.
4. Checktoseeifintakevalveballandpistonball
' I
2 .
Checkconnectingrodassemblyfordamage.
See paQe 34.
3. Besurecrankindnvehousingrotates:plugin
sprayer and turn
on momentarily to check. Turn
off and unplug sprayer. See page
34.
No
Output
vpe of Problem
;pray pattern variations
1
What to
Do
If check is not OK. refer
to
this column
1.
Refill and reprime pump.
2 .
Remove and clean, then reinstall.
3. Tighten;usethreadsealantorsealingtapeon
threads, if necessary.
4.
Remove intake valve and clean. Check balls
and seats for nicks; replace if necessary. See
page 30.
5 .
Replace packings. See page
30.
Also check
piston valve sat for hardened paint or nicks and
replace, if necessary.
1. Replace pin if missing. Be sure retaining
springisfullyingrooveallaroundconnectingrod.
2 .
Replaceconnectingrodassembly.Seepage
34.
3. Check drive housing assembly for damage
and replace if necessary. See page
34.
What to Check
If check is OK, go to the nexI check
What to
Do
If check is not OK, refer to this column
1. Be sure both
G1
and
G2
leads
t o m
bridge 1. Reconnect securely. See page
26.
(308)
to circuit board
(25)
are firmly connected.
See page 26.
I
2 .
Checkstall pressure. Refer
to PrewreCon- 2. Adjust pressure control. See page page 28
trol Adjustment procedure
on page
28.
I
3.
Checkbourdontubefiag(A)anddetector(B)
(300). Adjust the pressure control after reas.
circuit board
(25).
repiace the bare pressure control assembly
should
no drag or bind In optical detector slot of
tor slot to see if that correctsthe problem. If not position. Turn pressure setting to maximum; flag
3. Carefullybendflagintoalignmentwithdetec-
sembly. See pages 27 and 26.
4.
Check circuit board
(25)
by substituting with
a good board. See page 26.
4. Replace circuit board. See page 26.
5.
Check Low Output section
on page
16.