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Troubleshooting
333492B 13
Troubleshooting
Relieve pressure, page 8, before you check or repair the meter. Be sure all other valves, controls and pump are
operating properly.
Problem Cause Solution
Slow or no fluid flow.
Strainer (3a) is clogged.
1. Relieve pressure, page 8.
2. Remove meter from hose.
3. Clean or replace strainer (3a).
4. Install meter to hose (See Installing
Meter, page 10).
5. If the problem remains, contact your
Graco distributor for repair or
replacement.
Pump pressure is low. Increase pump pressure.
Twist lock nozzle not fully open. Aim nozzle into bucket. Fully open noz-
zle.
Do not trigger meter when nozzle is
closed! If you do accidentally trigger
the meter with the nozzle closed, point
nozzle into a waste bucket and slowly
open the nozzle to relieve pressure and
expel built up fluid.
Fluid shut-off valve (J or L) is not fully open
(page 9).
Fully open fluid shut-off valve (J or L).
Foreign material is wedged in the meter
housing.
Contact your Graco distributor for repair
or replacement.
Meter leaks from twist lock nozzle.
• It is important to distinguish
between the two causes of this
problem. A new nozzle will NOT
correct a fluid leak caused by a
faulty valve.
Twist lock nozzle has a damaged seal. Replace nozzle. See Step a in Installa-
tion Procedure, page 11.
Valve has damaged or obstructed seals. Clean valve assembly or replace.
Meter leaks from swivel.
Poor swivel/hose connection. Apply PTFE tape (leave a minimum 2
engaged threads uncovered for electri-
cal continuity) or sealant to threads of
hose and tighten the connection. See
Step 2 in Installation Procedure, page
10.
Poor swivel/meter housing connection. Torque the fitting to 20-25 ft.-lbs.
Swivel seals have deteriorated and leak. Replace swivel.