Graco G3000HR Benutzerhandbuch

1.

Follow the Pressure Relief Procedure, on page 7. 
Then close the fluid shut-off valve on each side of 
the meter.

2.

Disconnect the cable from the electronic sensor 
device.

3.

Disconnect both fluid line fittings and remove the 
meter from the fluid line.

4.

Loosen the two screws and remove the electronic 
sensor device from the flow meter upper housing. 
See the Parts drawings, pages 12-14.

5.

Loosen the screws. Keep a few threads of two 
opposing bolts engaged to minimize the torque 
stress on the shafts when you separate the meter 
housings.

6.

Hold onto the upper housing and gently tap the 
opposing bolts to separate the lower housing. 

7.

Remove and inspect the gears and shafts. Clean 
the meter parts with solvent.

8.

Reassemble the gears and shafts into the lower 
housing in the position they were removed from. 
Check the gears for free and easy rotation.

9.

Make sure the two locating pins are in place. 

10. Assemble the two meter housings, making sure to 

keep them parallel to each other. 

11. Install the screws. Tighten them oppositely and 

evenly, to 12 ft-lb (16 N•m). Do not over-tighten.

12. After re-assembling the meter, test the gear rotation 

by applying a brief air blast to the meter inlet. You 
should clearly hear the gears spin.

13. Set the electronic sensor on the upper housing and 

tighten the two screws hand-tight, about 3.5 ft-lb 
(4.7 N•m). Do not over-tighten.

Clean and service the meter at a clean workbench. 
Use only lint-free cloth on parts.

Installing and servicing this equipment requires 
access to parts that may cause electric shock or other 
serious injury if the work is not performed properly. Do 
not install or service this equipment unless you are 
trained and qualified.

Use only genuine Graco replacement parts. Substitu-
tion of components may impair intrinsic safety. This 
could result in a failure which causes serious injury 
and/or substantial property damage.

To avoid damaging the shafts, keep the housings par-
allel to each other when separating them; do not rock 
the housings from side to side. Do not use chisels or 
screwdrivers to split and pry apart the housings.