Instruction/ maintenance manual of the product 312794E Graco
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Instr uctions - P ar ts Merkur ® Pump Assemb l y 312794E ENG For high-perf ormance finishing and coating applications in hazardous or non-hazar dous locations. For prof essional use only . See page 4 f or model inf ormation, including maximu m work- ing pressure .
2 312794E Contents Pump P ar t Number Ma trix . . . . . . . . . . . . . . . . . . . 3 Pump Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Related M anuals .
Pump Part Number Matrix 312794E 3 Pump P ar t Number Matrix Chec k your p ump’ s identif ication plate (ID) f or the 6-digit par t number . Use the f ollowing ma trix to define the construction of y our pump , based on the six digits. For e xample, P ar t No .
Pump Models 4 312794E Pump Models Model, Series Air Motor Displacement Pump Maximum Fluid W or king Pressure psi (MPa, bar) Flow Rate at 60 cpm gpm (lpm) Fluid Inlet Fluid Outlet Air Inlet W10CAS, Series A M04LN0 L W07 5A 1000 (6.9, 6 9) 1.2 (4.5) 3/4 in.
Warnings 312794E 5 Wa r n i n g s The f ollowing w arnings are for t he setup , use, g rounding, maintenance , and repair of this equipme nt. The e xclama- tion point symbol ale r ts you to a gener al warning and the hazard symbol r ef ers to procedure -specific risk.
Related Manua ls 6 312794E Related Manuals PRESSURIZED EQUIPMENT HAZARD Fluid from the gun/dispense v alv e, leaks , or ruptured components can spla sh in the ey es or on skin an d cause serious injury . • F ollow Pressure Relief Procedure in this manual, when you stop spraying and bef ore cleaning , chec king, or ser vicing equipment.
Component Identi fication 312794E 7 Component Identification Key: A Ground Wire B TSL Reservoir C W et Cup (not visi ble , under TSL reser voir) D Fluid Outlet E Fluid Inlet F Lower Cylinder G Upp er Cylinder H Tie Rod Shield J Displacement Pump Adapter KT i e R o d L Coupling Nut MJ a m N u t N Air Motor F IG .
Installation 8 312794E Installation General Inf ormation Prepare the Operator All persons who oper ate the equipment must be tra ined in the opera tion of all system components as w ell as the proper handlin g of all fluids. All operators must thor- oughly read all instruction man uals, tags , and labels bef ore oper ating the equipme nt.
Installation 312794E 9 Mount the Pump Mount the pump o nly to Graco wall brac ke t 15T795, or to a Graco cart, av ailab le from your distributor . Pump dimensions are sho wn on page 28.
Installation 10 312794E T ypical Installation A Air Shutoff V alv e B Air Filter (optional accessor y) C Gun Air Pressure Gauge D Gun Air Pressure Reg ulator E Bleed T ype Master Air V alv e F DataT r.
Operation 312794E 11 Operation Pressure Relief Pr ocedure 1. Engage t he trigg er lock. 2. Close the bl eed-type master air v alv e. 3. Disengage the trigger loc k. 4. Hold a metal par t of the gun firmly to a grounded metal pail. T rigger the gun to reliev e pressure.
Operation 12 312794E Prime and Adjust the Pump 1. Lock gun trig ger . Remov e tip guard and spray tip from gun. Refer to gun manual. 2. Close gun air regulato r and pump air regulator (H) by tur ning knobs countercloc kwise reducing pre s- sure to zero .
Maintenance 312794E 13 Maintenance Preventive Maintenance Schedule The oper ating conditio ns of yo ur par ticular syste m determine how often maintenance is req uired. Estab lish a prev entive maintenance sched ule by recording when and what kind of maintena nce is needed, and then determine a regular schedule f or checking y our system.
Troubleshooting 14 312794E T r oub leshooting NO TE: Check all possible prob lems and caus es before disassemb ling the pump . Relieve the pre ssure before checking or serv icing the equipment. Prob lem Cause Solution Pump output low on both strok es.
Repair 312794E 15 Repair General Inf ormation • Ref erence nu mbers and letters in parent heses in the te xt ref er to the ca llouts in the figures and the par ts d ra wing. • Alwa ys use Gen uine Graco P arts and Accessories, av ailab le from y our Graco distrib utor .
Repair 16 312794E Reconnect the Displacement Pump 1. Tilt the air motor onto its bac k, then hand turn the displacement pum p into the adapter pla te. Set the pump upr ight agai n. 2. Hold the air m otor piston r od up with one ha nd. With your other hand, put the cou pling nut (9) on the dis- placement ro d.
Repair 312794E 17 Disconnect the Air Motor 1. Flush the pump , if possible . (See page 13.) Re liev e the pressure. (See pag e 11.) 2. Disconnect the ai r and fluid hoses , the grou nd wire (13), and t he tie rod shie ld (11). 3. Hold the fla ts of the air mo tor piston r od with a wrench.
Pump Parts 18 312794E Pump P ar ts 1 1 2 3* 4 5* 6* 7* 9* 10* 11* ti12810a 2 3 4 12* 8* T orque varies by air motor size. M02xxx: 5-10 ft-lb (7-13.5 N•m) All others: 50-55 ft-lb (68-75 N•m) 1 T orque varies by air motor size. M02xxx: 15-20 ft-lb (20-27 N•m) All others: 50-60 ft-lb (68-81 N•m) 2 T orque varies by displacement pump size.
Pump Parts 312794E 19 ----- Not sold separately . * Included in Connecting Kit. See page 20 to order the correct k it f or your pump. NO TE: Replacement Warning labels, signs, tags, and cards are av ailab le at no cost. P arts That V ary by Model Ref.
Repair Kits 20 312794E Repair Kits NO TE: For displacement pump repair ki ts , see ma nual 312792 . For air motor repair kits , see manual 31279 6. Kit Description L W025A L W050A L W075A L W100A L W125A L W150A 2.5 in. motor 3.5 in. motor 3.5 in. motor 6-7.
Performance Charts 312794E 21 Pe r f o r m a n c e C h a r t s Cycles per Minute 0.2 200 400 600 800 1000 2 4 6 8 0 0 A B C A B C Fluid Flow gpm (lpm) test ed in No. 10 weight oil Fluid Outlet Press ure psi (MPa, bar) (7, 70) (3, 30) (4, 40) (5.5, 55) (1.
Performance Charts 22 312794E Cycles per Minute 200 400 600 800 1000 1200 2 4 6 8 1400 0 0 A B C A B C Fluid Flow gpm (l pm) tested in No. 10 weight oil Fluid Outlet Pressure psi (MPa, bar) (7, 70) (3, 30) (4, 40) (5.5, 55) (1.4, 14) (8, 80) (10, 100) (.
Performance Charts 312794E 23 KEY A = 100 psi (0.7 MP a, 7 bar) B = 70 psi (0.5 MP a, 5 bar) C = 40 psi (0.3 MP a, 3 bar) = fluid flow = air flo w Cycles per Minute 0 0 A B C A B C Fluid Flow gpm (lpm) test ed in No.
Performance Charts 24 312794E KEY A = 100 psi (0.7 MP a, 7 bar) B = 70 psi (0.5 MP a, 5 bar) C = 40 psi (0.3 MP a, 3 bar) = fluid flow = air flow Cycles per Minute 0 0 A B C A B C Fluid Flow gpm (lpm) test ed in No.
Performance Charts 312794E 25 KEY A = 100 psi (0.7 MP a, 7 bar) B = 70 psi (0.5 MP a, 5 bar) C = 40 psi (0.3 MP a, 3 bar) = fluid flow = air flow Cycles per Minute Fluid Flow gpm (lpm) tested in No. 10 weight oil Fluid Outlet Pres sure psi (MPa, bar) Air Flow scfm (m 3 /min) 0.
Performance Charts 26 312794E KEY A = 100 psi (0.7 MP a, 7 bar) B = 70 psi (0.5 MP a, 5 bar) C = 40 psi (0.3 MP a, 3 bar) = fluid flow = air flow Cycles per Minute 0 0 A B C A B C Fluid Flow gpm (lpm) test ed in No.
Performance Charts 312794E 27 KEY A = 100 psi (0.7 MP a, 7 bar) B = 70 psi (0.5 MP a, 5 bar) C = 40 psi (0.3 MP a, 3 bar) = fluid flo w = air flow Cycles per Minute 0 0 A B C A B C Fluid Flow gpm (lpm) test ed in No. 10 weight oil Fluid Outlet Pres sure psi (MPa, bar) Air Flow scfm (m 3 /min) Model W48xxx 48:1 Ratio, 75 cc/cycle 0.
Pump Dimensions 28 312794E Pump Dimensions Pump Model A in. (mm) B in. (mm ) C in (mm) D in (mm) W eight lbs (kg) W10xxx 24.6 (625) 5.6 (142) 5.8 (147) 7.8 (198) 30 (14) W15Axx 24.1 (612) 4.2 (107) 5.1 (130) 6.2 (1 57) 15 (7) W15Bxx 24.0 (610) 5.6 (142) 5.
Wall Bracket Moun ting Dimensions 312794E 29 W all Brac ket Mounting Dimensions Te c h n i c a l D a t a 4 in. (102 mm) 11 in. (279 mm) Four 0.40 in. (10 mm) mounting holes ti12833a Maximum fluid working pr essure . . . . . . . . . . . . . . . . . . .
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. Original instructions. T his manual contains English.
An important point after buying a device Graco 312794E (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 312794E 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 312794E - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco 312794E you will learn all the available features of the product, as well as information on its operation. The information that you get Graco 312794E will certainly help you make a decision on the purchase.
If you already are a holder of Graco 312794E, 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 312794E.
However, one of the most important roles played by the user manual is to help in solving problems with Graco 312794E. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco 312794E 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
