Instruction/ maintenance manual of the product 254974 Graco Inc.
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311768B Operation Interior T e xture Spra y er s R TX 900 & R TX 1250 For W ater-Based Materi als Only Models: 254974 & 254975 70 psi (0.49 MP a, 4.9 bar) Maximum Fluid Working Pressure Related Manuals Import ant Safety Instructions. Read all warnings and instr uctions in this manual.
Warnings 2 Wa r n i n g s The f ollowing are general w arnings related to the setup , use, g rounding, mainten ance and repair of th is equipment. Additional, mo re specific warnings ma y be f ound through out the body of this manual where applicab le.
Warnings 3 Burn Hazard Equipment surf aces and fluid that’ s heate d can become v ery hot dur ing opera tion. T o a void se vere b urns, do not touch hot fl uid or equipment.
Warnings 4 CA UTION • W ater or material remaining in unit when temper atures are belo w freezing ca n damage motor and/or delay pump star tup. Do not allow unit to freeze . • Bef ore adding material or starting unit in cold weather , run warm water through pump .
Component Identi fication 5 Component Identification M D F A G C L Model 254975 Sho wn E K U T V B S Y cc R P bb N H J ti8939a W Item Component Item Component A Handle N Burp Guard B T oolbo x P Mater.
Preparation 6 Preparation Pressure Relief Procedure T o reduce risk of injur y , follo w this procedure whene v er y ou see this symbol throug hout this manual, Also , perf or m this procedure whene ver you : • Stop spra ying • Check or repair a ny par t of this system • Install or clean spra y nozzle 1.
Setup 7 Setup T e xture Spra ying (material supplied from unit) 1. Connect air hose and m ater ial hose to spray er a ir and material hose out lets. 2. Open air valv e. 3. Connect ai r hose to gun. 4. Connect material hose to gun. 5. Mak e sure b urp guard is installed, Cautio n , page 3.
Setup 8 9. T urn power switch ON. 10. Close gun air v alv e. 11. P oint gun into waste buck et and pull trig ger to pump water t hrough the system. Cont inue to trigger gun until material hopper is empty . 12. Add pr e-mixed te xture mix to m ater ial hoppe r .
Setup 9 6. T ur n hopper gun/spr a y gun selector s witch to HOP- PER GUN. 7. Open gun air valv e. 8. T urn power switch ON. 9. T o achiev e uniform spray patter n, adjust air valv e and flo w adjustment n ut on gun. If y ou do not achie ve the desired spr a y pattern, change nozzles (see page 11).
Mixing Material 10 Mixing Material Dry Mix - 40 lb (18 kg) ba g 1. Carefully mix te xture material and water according to manuf acturer instructions on bag. 2. Agitate to mix, using a ha lf-inch, variable speed drill with mixing paddle , to a smooth, lump-f ree consis- tency .
Spray Techniques 11 Spra y T echniques Recommended Nozzle Selection Char t 1 Control air volume with gun air v alve. 2 F or more material v o lume try a larger nozzle. Adjusting the System Sufficient fluid ou tput (v olume and pressure) and good atomization is a balance of atomo zing air , material thickne ss/material flow an d nozzle selection.
Shutdown and Cleanup 12 Shutdo wn and Cleanup T e xture Spra ying (8-10 gallon Ma terial Hopper) When you hav e finishe d spra ying: 1. Open gun air valv e. 2. Mak e sure hopp er gun/spr a y gun selection s witch is tur ned to SPRA Y GUN. 3. T urn power switch ON.
Shutdown and Cleanup 13 Removing Ma terial Hopper Fr om Spray er: The material hopper can be rem ov ed for cleaning . T o remov e material hopper : 1. Loosen botto m fitting. 2. Lift mater ial ho pper straight up, off unit. 3. Plug opening on bo ttom of material hopper with y our hand.
Troubleshooting 14 T r oubleshooting Prob lem C ause Solution Spra yer won’t run P ower s witch not on T ur n s witch on. No pow er at wall outle t Chec k outlet by plugging in another appliance . If appliance does not work, try another outlet. Wrong size ge nerator Use a 3500 wa tt or larger gener ator .
Troubleshooting 15 Speed of application slo w or slow er Material too thick Thin material. Nozzle too small Change nozzles to a larger siz e. See Recommended Nozzle Selection Char t, page 11. T oo much air being used. P ar tially close gun air v alve to r educe air flow .
Technica l Data 16 Te c h n i c a l D a t a *Measured while sp ra ying at 1 m. **Measured per ISO- 3744 Main unit pow er requirement s 120 V ac , 60 Hz, 15A, 1 phase Maximum fluid wor king pressure 70 psi, (4.9 bar) Maximum air w orking pressure 50 psi, (3.
Graco Warra nty 17 Graco W arranty Graco warrants all equipment ref erenced in this document which is manufactured b y Graco and bearing its na me to be free from defects in material and workmanship on the date of sale to the or iginal pu rchaser for use .
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 311768 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC.
An important point after buying a device Graco Inc. 254974 (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 Inc. 254974 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 Inc. 254974 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 254974 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 254974 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 254974, 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 Inc. 254974.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 254974. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 254974 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
