Instruction/ maintenance manual of the product g250 Graco
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308778L Instr uctions-P ar ts V olumetric Fluid Flo w Meter For precise metering of plural component fl uids and solvents. See page 2 f or model inf ormation, including maximum working pressure . Important Safety Instructions Read all warnings and instructions in this manual.
Models 2 308778L Contents Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Low Pressure Meter s . . . . . . . . . . . . . . . . . . . . . 2 High Pressure Meters . . . . . . . . . . . . . . . . . . . . . 2 W arnings . . . .
Warnings 308778L 3 Wa r n i n g s The f ollowing warnings are f or the setup , use, grounding, mainten a nce, and repair of this equipment. The e xclama- tion point symbol ale r ts you to a ge neral warning and the hazard symbol ref ers to procedu re-specific risk.
Warnings 4 308778L EQUIPMENT MISUSE HAZARD Misuse can ca use death or serious injury . • Do not oper ate the unit when f atigued or under t he influence of drugs or alcohol. • Do not exceed the maximum w orkin g pressure or temperature rating of the lowest rated system component.
Installation 308778L 5 Installation Dust and Foreign Matter A void h aving dust or foreign matt er enter the flow mete r by taking the f ollowing precautions: • Thoroughly flush the flui d supply lines bef ore install- ing the flo w meter . • When installing fittings, mak e s ure that no sealing tape overlaps into th e inside of t he pipe.
Installation 6 308778L Gr ounding 1. Ground the fl ow met er b y connectin g a grounded cabl e to the sensor . Hav e a qualified electrician check the electrical groundin g continuity betw een the flo.
Operation 308778L 7 Operation Pressure Relief Pr ocedure 1. Shut off the fluid supp ly to the meter . 2. Shut off all electrical powe r to the fluid system. 3. F ollow the Pressure Relief Procedur e f or your fluid system d ispensing de vice . Flow Meter Function This is a positiv e displacement, gear flow meter .
Troubleshooting 8 308778L T r oubleshooting Bef ore ser vicing this equipment alw ays mak e sure to relie ve the pressure . NO TICE The sensor is not a serviceable part. Replace it if it is malfunctioning. Prob lem Cause Solution No flow volume displa yed at m onitor- ing unit.
Maintenance 308778L 9 Maintenance Residue Build-up on the Meter Gear s Residue b uild-up may cause the meter gears to bind or stop rotating , which decreases the meter accur acy and mak es meter recalibra tion necessary . As more build-up occurs, recalibration is re quired more often.
Maintenance 10 308778L Cleaning or Servicing the Meter Chamber 1. Follo w the Pressure Re lief Procedure , on page 7. Then close the fluid shut-off valv e on each side of the meter . 2. Disconnect the cab le from the electronic sensor de vice. 3. Disconnect both flui d line fittings and remo ve the meter from t he fluid line.
Parts 308778L 11 Pa r t s Flow Meter Kits, f or ProMix 2KS W all Fluid P anel 15V804 G3000 Meter Kit 15V827 G3000HR Meter Kit Ref. No. P ar t No. Description Qty 101 289813 METER, gear , G3000; used o.
Parts 12 308778L Bare Meter Assemblies 289813 G3000 Meter , with 90° sensor connector 289814 G3000HR Meter , wi th 90° sensor connector * Not a replacement part. Order item 3, gear meter assembly . 1 T orque to 27-57 in-lb (3.1-6.4 N •m). T orque to 140-170 in-lb (15.
Parts 308778L 13 239716 G3000 Meter 244292 G3000HR Meter * Not a replacement part. Order item 3, gear meter assembly . T orque to 27-5 7 in-lb (3.1-6.4 N•m). T orque to 140-170 in-lb (15.8-19.2 N•m). 1 2 TI7381a Item 3, Ge ar Meter Assemb ly includes items 4-11 2 2 4 5 7 8 9 10 11 1 1 Ref.
Parts 14 308778L 249426 G250 Meter 249427 G250HR Meter * Not a replacement pa r t. Order item 22, gear mete r assembly . 1 T orque to 27-5 7 in-lb (3.1-6.4 N•m). T orque to 140-170 in-lb (15.8-19.2 N•m). 1 2 TI11580a 1 2 4 5 7 8 6 11 Item 22, Gear Meter Assemb ly includes items 1-11 2 21 20 Ref.
Dimensions 308778L 15 Dimensions G3000 and G3000HR Mounting Holes (bottom vie w) P ar t Nos. 289813 and 289814 P ar t Nos. 239716 and 244292 G250 and G250HR Mounting Hole s (bottom vie w) P ar t Nos. 249426 and 24942 7 1.73 in. (43.94 mm) M6 M6 1.73 in.
Technica l Data 16 308778L T e c hnical Data * F or most commonly used coatings, the flow meter reading will be accur ate to within +/- 0.5%. Accuracy will dimin- ish at low viscosities and low flow r ates. Maximum Fluid W orking Pressure G3000 an d G3000HR .
Pressure Drop Curve 308778L 17 Pressure Dr op Cur ve G3000/G250 PSI 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 .8 0 .9 1.0 1.1 G3000HR/G250HR GAL/MIN GAL/MIN 0.0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.
All written and visual data contained in this document reflects the latest product information available at the time of publica tion. Graco reserves the right to make changes a t any time without notice. This manual contains English. MM 308778 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC.
An important point after buying a device Graco g250 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco g250 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco g250 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco g250 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco g250 will certainly help you make a decision on the purchase.
If you already are a holder of Graco g250, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco g250.
However, one of the most important roles played by the user manual is to help in solving problems with Graco g250. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco g250 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
