Graco HVLP EDGE II Operation - Repair - Parts page 26

Troubleshooting
Problem
Fluid leaks at packing nut
Needle does not return after
trigger is released or is slow
to return
Sprayer does not
automatically shut-off while
in SmartStart setting (Graco
Finish HVLP ProContractor
and ProComp models only)
26
Cause
Packing nut is loose
Packing nut is too tight
Leaking air hose connections
Gun leaking air
Solution
Tighten packing nut slightly and
re-test. Repeat until packing seals
completely.
Loosen packing nut slowly until
needle returns freely.
Verify air hose and attached
components are those shipped with
the sprayer.
Disconnect air hoses. Verify o-ring is
present inside connection fitting at
turbine end of hose. If using a whip
hose, verify gasket is present inside
connection fitting. Securely connect
all hose connections.
Replace with Graco HVLP
accessories, if necessary. See
separate sprayer manual 3A4967.
Verify use of Edge II Plus gun.
If SmartStart functions when air valve
at end of hose is closed, clean gun.
See Cleaning HVLP Edge II Gun,
page 22.
Verify fluid valve is tight. See page 31
(ref. 16).
Replace fluid valve o-ring. See page
31 (ref. 18).
Replace air valve. See page 31 (ref.
12).
3A4980B