Graco 231421 Instructions-Parts List Manual Download Page 26 | Manualshive

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26 308746

Drive Housing, Connecting Rod, Crankshaft

Torque to 21 in–lb (2.4 N.m)

Fig. 25

1

3

2

Quantity of three

Quantity of one

Apply a total of

3 fl. oz.(89 cc) of

grease

to gears.

4

56

6

19

15

13

64

11

5,6

12a

12

12b

59

11a

4a

A

34

31

REF A

16

47

Note:

Filter

not shown

02815

1

1

2

3

4

C

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...
24
25
26
27
28
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»

Summary of Contents for 231421

Page 1: ...ELECTRIC 230 VAC 50 Hz 395st Airless Paint Sprayer 207 bar 20 7 MPa 3000 psi Maximum Working Pressure Model 231421 Series A Standard mount complete sprayer with hose gun RAC IVr DripLesst Tip Guard and SwitchTipt GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 ECOPYRIGHT 1997 GRACO INC Graco Inc is registered to I S EN ISO 9001 7411A ...

Page 2: ...o or destruction of equipment if you do not follow the instructions WARNING FIRE AND EXPLOSION HAZARD Improper grounding poor ventilation open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury If there is any static sparking or you feel an electric shock while using this equipment stop spray ing immediately Do not use the equipment until you iden...

Page 3: ...pray tip clogs and before cleaning checking or servicing the equipment Tighten all fluid connections before operating the equipment Check the hoses tubes and couplings daily Replace worn or damaged parts immediately Do not repair high pressure couplings you must replace the entire hose Fluid hoses must have spring guards on both ends to help protect them from rupture caused by kinks or bends near ...

Page 4: ...o temperatures above 82 C 180 F or below 40 C 40 F Do not lift pressurized equipment Comply with all applicable local state and national fire electrical and safety regulations Liquids can be injected into the body by high pressure airless spray or leaks especially hose leaks Keep body clear of the nozzle Never stop leaks with any part of the body Drain all pressure before removing parts A void acc...

Page 5: ...rizes fluid to be sprayed through spray gun G 50 ft 15 m Main Hose 1 4 in ID grounded nylon hose with spring guards on both ends H RAC IV Tip Guard Reverse A Clean RAC tip guard reduces the risk of fluid injection injury J Contractor FTx E Gun High pressure spray gun with gun safety latch K RAC IV Switch Tip RAC switch tip atomizes fluid and removes clogs from spray tip without removing tip from s...

Page 6: ...w it onto the outlet nipple 28 Don t use thread sealant and don t install the spray tip yet 3 Fill the wet cup 102 Pry off the wet cup seal Fill the cup 1 3 full with Graco Throat Seal Liquid TSL supplied Install the wet cup seal 4 Check the electrical service It must be 230 Vac 50 Hz 6A minimum and protected by a fuse or circuit breaker with a rating of not more than 16A You may use a 3 wire 1 0 ...

Page 7: ... 3 4 2 1 4 npsm m fluid outlet Rotate clockwise to increase pressure Do not install any shutof f device here Fill 1 3 full with TSL Shown in closed or spray position 5 32 33 64 28 74 102 52 1 2 3 4 5 67 Model 231421 Shown ...

Page 8: ...p If the valve senses an over pressure condition it opens automati cally to relieve fluid pressure If this happens stop spraying immediately shut off and unplug the sprayer Determine the cause of the problem and correct it before operating the sprayer again Refer also to the Troubleshooting page 14 See Fig 6 Fig 6 7105A Closed or spray position Open or drain position 1 2 1 2 How to use the pressur...

Page 9: ...ward See Fig 8 Clean the front of the tip frequently during the day s operation First follow the Pressure Relief Procedure on page 10 Fig 8 Tip handle shown in spraying position Turn handle 180 trigger gun to clear clog 1 2 2 1 04647 How to remove a tip clog 1 Release the gun trigger Lock the safety latch Rotate the RAC IV tip handle 180 See Fig 8 2 Unlock the safety latch Trigger the gun into a p...

Page 10: ...d after following the steps above VERY SLOWLY loos en the tip guard retaining nut or hose end coupling to relieve pressure gradually then loosen completely Now clear the tip or hose obstruction Startup Procedure Use this procedure each time you start the sprayer to help ensure the sprayer is ready to operate and that you start it safely NOTE If this is a first time startup flush the sprayer See pa...

Page 11: ...ngage the gun safety latch 10 Install the spray tip and tip guard Install the spray tip If you are using the RAC IV tip guard refer to manual 308644 for installation instructions 11 Adjust the spray pattern a Increase the pressure until spray from the gun is completely atomized To avoid excessive overspray and fogging and to extend tip and sprayer life always use the lowest pressure needed to get ...

Page 12: ... See page 28 5 Lubricate the bearing housing after every 100 hours of operation Remove the front cover Fill the bearing housing cavity A with SAE 10 non detergent oil See Fig 12 6 Flush the sprayer at the end of each work day and fill it with mineral spirits to help prevent pump corrosion and freezing See page 13 CAUTION To prevent pump corrosion and to reduce the chance of fluid freezing in the p...

Page 13: ... the screen separately See instruction manual 308249 3 Pour one half gallon 2 liters of compatible solvent into a grounded metal flushing pail Put the suction hose in the pail 4 Open the pressure drain valve See Fig 6 page 8 5 To save the paint still in the pump and hose follow Step 6 except put the drain tube in the paint pail When solvent appears close the drain valve Put the drain tube in the f...

Page 14: ...and secure with spring retainer 3 Check for motor damage Remove drive hous ing assembly 11 See page 25 Try to rotate motor fan by hand 3 Replace motor 4 if fan won t turn See page 23 Electrical 1 Check electrical supply with volt meter Meter should read 210 250 VAC 1 Reset building circuit breaker replace building fuse Try another outlet 2 Check extension cord for visible damage Use a volt meter o...

Page 15: ...switch and connect volt meter between exposed terminal on switch and power cord s white wire Plug in sprayer and turn ON Meter should read 210 250 VAC Turn off and unplug sprayer 10 Replace ON OFF switch See page 24 11 Check motor thermal cutout switch Connect ohmmeter between motor s red leads Meter should read 1 ohm maximum 11 Allow motor to cool Correct cause of overheating If switch remains op...

Page 16: ...akage from transducer is normal 1 Periodically remove residue from its cyl inder port See page 28 No output motor runs and pump strokes 1 Check paint supply 1 Refill and reprime pump 2 Check for clogged intake strainer 2 Remove and clean then reinstall 3 Check for loose suction tube or fittings See page 28 3 Tighten use thread sealant on npt threads of adapter 38 4 Check to see if intake valve bal...

Page 17: ...t all wires 2 Check for missing motor brush inspection plate gasket see page 18 bent terminal forks or other metal to metal contact points which could cause a short 2 Correct faulty conditions 3 Check motor armature for shorts Use an arma ture tester growler or perform motor test See page 18 Inspect windings for burns 3 Replace motor See page 23 4 Check motor start board 47 by substituting with a ...

Page 18: ...the motor fan by hand If there are no shorts the motor will coast two or three revolutions before coming to a complete stop If the motor does not spin freely the armature is shorted and the motor must be re placed See page 23 Armature Brushes and Motor Wiring Open Circuit Test Continuity Connect the two black motor leads together with a test lead Turn the motor fan by hand at about two revolu tion...

Page 19: ...fore operating the sprayer WARNING HOT SURFACE HAZARD During operation the motor and drive housing become very hot and could burn your skin if touched Flammable materi als spilled on the hot bare motor could cause a fire or explosion CAUTION To reduce the risk of a pressure control malfunction be sure to properly mate connectors and never pull on a wire to disconnect it Pulling on a wire could loo...

Page 20: ...ut the spring clip See Fig 16 3 Slide off the brush lead terminal E off the blade connector Remove the old brush C See Fig 16 Fig 16 F G E D C B H 1 1 Motor lead do not disconnect 2 Minimum 0 5 12 5 mm 03881 3 Included in Brush Repair Kit 236967 3 2 4 Inspect the commutator for excessive pitting burning or gouging A black color on the commuta tor is normal Have the commutator resurfaced by a quali...

Page 21: ...ll speed d Inspect the brush and commutator contact area for excessive arcing Arcs should not trail or circle around the commutator surface WARNING MOVING PARTS HAZARD Do not touch the brushes leads springs or brush holders while the sprayer is plugged in to reduce the risk of electric shock and serious injury 10 Install the brush inspection covers and gaskets 11 Break in the brushes Operate the s...

Page 22: ... pump See manual 308190 for pump repair instructions Installing the pump See Fig 18 and 19 1 Mount the pump on the drive housing Tap it into the alignment pins with a soft hammer Tighten the screws 21 to 50 ft lb 68 N m WARNING MOVING PARTS HAZARD Be sure the retaining spring 18 is firmly in the groove all the way around to pre vent the pin 17 from working loose due to vibration See Fig 19 If the ...

Page 23: ...Remove the three drive housing screws and lockwashers 19 6 Also see Fig 22 6 Remove the two motor screws 5 and the lock washers 6 7 Tap the lower rear of the drive housing 11 with a plastic mallet to loosen the motor Pull the drive housing straight off the motor while guiding the harness A from the motor Do not allow the gear 16 to fall Read the CAUTION on page 25 8 Remove the two screws 46 and li...

Page 24: ...ion box screws 56 and lower the junction box 59 3 Disconnect the power supply cord leads including the green wire to the grounding screw 49 4 Loosen the strain relief bushing 51 Remove the power supply cord 57 5 Install the new cord 57 in the reverse order of disassembly 6 Install the junction box Be sure no leads are pinched against the motor or by the motor start board Also be sure the gasket 50...

Page 25: ...Do not lose the thrust balls 11a or 4a or let them fall between the gears which will damage the drive hous ing if not removed The balls which are heavily covered with grease usually stay in the gear recesses but could be dislodged If the balls are not in place the bearings will wear prematurely 6 Remove and inspect the crankshaft 12 and the connecting rod 15 Installation 7 Install the connecting r...

Page 26: ...Crankshaft Torque to 21 in lb 2 4 N m Fig 25 1 3 2 Quantity of three Quantity of one Apply a total of 3 fl oz 89 cc of grease to gears 4 56 6 19 15 13 64 11 5 6 12a 12 12b 59 11a 4a A 34 31 REF A 16 47 Note Filter not shown 02815 1 1 2 3 4 C ...

Page 27: ... and tip the pressure control 64 forward and up to detach it from the drive housing 11 4 Guide the harness A through the motor and drive housing and remove the pressure control 5 Guide the harness of the new pressure control through the drive housing and motor passages 6 Install the new pressure control Tip the pressure control down and back into the drive housing 11 Do not pinch or damage the har...

Page 28: ...817A 101 29 Suction Hose WARNING INJECTION HAZARD To reduce the risk of serious injury whenever you are instructed to relieve pressure follow the Pressure Relief Procedure on page 10 1 Remove the drain hose 33 from the clip Remove the front cover 13 2 Pull upward on the hose 32 while unscrewing it from the inlet tube 38 The hose coupling A threads will engage and the hose will separate from the tu...

Page 29: ...e to the new gasket 42a and install it in the valve body NOTE The gasket will protrude from the end of the valve until the valve is tightened into pump which correctly seats the gasket Replacement 1 Apply a small amount of thread sealant 42e onto the valve 42 threads Tighten the valve into the pump manifold to 185 in lb 21 N m 2 Lightly grease the face of the base 43 and install the base Turn the ...

Page 30: ...3 20 4a 12 18 15 16 45 37 29 32 25 12b 12a 64 30 5 19 6 17 31 34 21 38 36 46 4 39 28 56 43 42 1 44 REF 32 REF 33 11 23 63 67 74 11b 14 4d INSIDE LABEL 35 OUTSIDE LABEL 4e See detail on page 31 24 1 2 Label 1 1 1 50 57 13 66 2 11a 85 3 6 23 27 26 86 87 83 28 7159B ...

Page 31: ...0110 SEALANT pipe not shown 1 43 224807 BASE valve 1 44 111600 PIN grooved 3 32 x 1 1 45 187625 HANDLE drain valve 1 46 110997 SCREW washer hex hd 5 16 2 47 235578 MOTOR START BOARD Includes 47a 47b 1 47a 107260 TERMINAL 1 4 F 16 AWG 1 47b 107266 TERMINAL 1 4 M 16 A WG 1 47c 107267 TERMINAL 3 16 F 16 AWG 2 49 110037 SCREW mach pnhd 10 24 x 5 8 1 50 187963 GASKET junction box 1 51 235450 FILTER pow...

Page 32: ...the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation Graco s sole obligation and buyer s sole remedy for any breach of warranty shall be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost p...

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