Graco N22DT0 - Erratic Air Pressure with Built in Air Control; Air Continuously Exhausting from Motor

Troubleshooting
18 311238ZAM
Erratic air pressure with built in air control
Air continuously exhausting from motor
Symptom Cause Check Procedure Solution
Built in air inlet gauge
reads zero "0".
Lack of air pressure. Verify air supply is present,
main air valve is on, turn "C"
regulator knob clockwise to
desired set pressure.
Verify air supply is present, main air valve
is on, turn "C" regulator knob clockwise to
desired set pressure. Note: If regulator
knob is locking style, pull out before
adjusting.
Air pressure varies 5 - 10
psi from set point.
Pilot valve (17-NXT095)
bleed orifice obstructed.
Rebuild with regulator repair kit
(17-NXT095).
Air pressure jumps to line
input pressure from set
point.
Formed gasket
(17-15G439) is leaking.
Replace gasket (3-15G439) or seal repair
kit (NXT096).
Sticking/damaged regulator
valve spool (8-NXT098).
Remove, inspect for damage, grease and
reassemble. replace regulator valve spool
(8-NXT098) if damaged.
Remove air control and install another
regulator to 3/4 npt(f) motor air inlet port
to see if problem remains with the air
motor.
Light Duty Kit: 262230
Heavy Duty or Xtreme Duty: 262231
Symptom Cause Check Procedure Solution
Air continuously
exhausting around motor
shaft.
Damaged air motor shaft
seal.
Replace seals with NXT200 (2200),
NXT300 (3400), NXT600 (6500) motor
seal kit. See Parts, page 30.
Air continuously
exhausting from muffler on
up and down strokes.
De-icing control is open. Check de-icing control knob. Close de-icing control with knob or flat
blade screwdriver.