![Graco Python XL 3/4" [27/48] Replace pilot valves](/img/pdf.png)
Graco Python XL 3/4" [27/48] Replace pilot valves
Repair
3A3948B 27
Reassemble the Pneumatic Valve
1. See F
IG. 16. Lubricate detent cam (304) and
install into housing.
2. See F
IG. 17. Lubricate the u-cups (308†) and
install on the piston (302) with lips facing toward
the center of the piston.
3. See F
IG. 16. Lubricate both ends of the piston
(302) and install it in the housing.
4. Lubricate and install the detent assembly (303)
into the piston.
5. Lubricate new o-rings (306†) and install on the
end caps (307). Install the end caps into the hous-
ing.
6. Install a snap ring (310) on each end to hold end
caps in place.
7. Install the spring (311). Lubricate and install the
pneumatic valve cup (312), see F
IG. 18. Align the
small round magnet with the pneumatic inlet.
8. Install the valve plate (305). Tighten the screws
(309†) to hold it in place.
Replace Pilot Valves
1. Stop the pump. Follow Pressure Relief Procedure,
page 12.
2. Disconnect the pneumatic line to the motor.
3. See F
IG. 19. Push the safety spring (9) down and
hold to access the pilot valve (213) on the bottom
cover (201).
4. See F
IG. 21 on page 30. Use a 10 mm wrench to
remove the old pilot valves (213) from the top and
bottom covers.
5. Lubricate and install the new pilot valves (213).
Torque to 95-105 in-lb (11-12 N•m).
F
IG. 17. Pneumatic Valve U-cup Installation
Lips face down
Lips face up
†308
†308
302
ti12754a
FIG. 18. Pneumatic Valve Cup Installation
312
ti16283a
Magnet
Содержание
- A3948b 1
- Instructions parts 1
- Xl chemical injection pump 1
- Contents 2
- Warnings 5 2
- Models 3
- Note see the configuration number matrix page 4 to find the plunger and pneumatic motor size for your unit 3
- All pumps feature 1 4 in npt f inlet connections 4
- Check the identification plate id for the 12 digit configuration number of your pump use the following matrix to define the components of your pump 4
- Configuration number matrix 4
- Key points 4
- Kit b32240 can be used to convert an hf4 outlet connection to a 1 4 in npt f for applications at or under 10 000 psi 4
- Lower configuration 4
- Note not all combinations are possible 4
- Outlet connection type plunger material 4
- Pci 350 25 s x a 0 4
- Plunger size 4
- Pneumatic chemical injection 4
- Pneumatic motor size plunger size 4
- Pneumatic motor size plunger size pressure range plunger material seal material qualifier 4
- Pump configuration 4
- Sample configuration number pci 350 25s xa 0 4
- Seal material 4
- Seal material qualifier 4
- Warnings 5
- Fluid line 7
- Flush before using equipment 7
- Grounding 7
- Installation 7
- Pneumatic line 7
- Required accessories 7
- Mount the pump and connect chemical supply 8
- Typical installation 8
- Connect chemical outlet 9
- Connect pneumatic supply 9
- Route exhaust to remote location 9
- 0 0 15 0 1 10
- 1 13 15 0 1 10
- 11 110 34 0 2 10
- 12 124 38 0 2 10
- 13 137 42 0 2 10
- 15 151 46 0 3 10
- 16 165 50 0 3 10
- 17 179 54 0 3 10
- 19 193 58 0 4 10
- 2 27 15 0 1 10
- 2 in fluid plunger pumps 10
- 20 206 62 0 4 10
- 22 220 66 0 4 10
- 23 234 70 0 4 10
- 24 248 74 0 5 10
- 26 262 79 0 5 10
- 27 275 83 0 5 10
- 29 289 87 0 6 10
- 30 303 91 0 6 10
- 31 317 95 0 6 10
- 33 330 99 0 6 10
- 3a3948b 10
- 4 41 15 0 1 10
- 4 in fluid plunger pumps 10
- 5 55 17 0 1 10
- 6 68 21 0 1 10
- 8 82 25 0 1 10
- 8 in fluid plunger pumps 10
- 9 96 30 0 2 10
- Installation 10
- Minimum pneumatic pressures by fluid plunger size and outlet pressures 10
- Outlet pressure psi mpa bar 10
- See performance charts starting on page 44 for maximum flows at any given pressure 10
- For applications where the exhaust is ported to a pres surized location compute the difference between the inlet and outlet pressures to get the pneumatic pressure to be used in the above tables minimum pressure differ ential is 15 psi 0 mpa 1 bar 11
- Note regardless of exhaust pressure maximum inlet pressure is 100 psi 0 mpa 6 bar 11
- Flush the equipment 12
- Operation 12
- Pressure relief procedure 12
- Calibrate chemical dosage 13
- Prime the pump 13
- Stroke adjustment 14
- Baseline chemical dosage settings 15
- Note standard or short strokes are recommended for cycle rates less than 15 cpm 15
- See stroke adjustment page 14 for stroke adjust settings see performance charts starting on page 44 for maximum flows at any given pressure 15
- Maintenance 16
- Preventive maintenance schedule 16
- Storage 16
- Tighten packings 16
- Tighten threaded connections 16
- Air bubbles in fluid fluid inlet line is loose tighten 17
- Check all possible problems and causes before dis assembling pump 17
- Fluid leaking loose fittings tighten fittings 17
- Follow pressure relief procedure page 12 before checking or repairing pump 17
- Problem cause solution 17
- Pump stroking but no fluid moving air in pump prime pump 17
- Troubleshooting 17
- Worn or damaged check valve seals rebuild inlet and outlet check valves 17
- Worn seals adjust packing if leak persists replace packing 17
- Problem cause solution 18
- Disconnect pump 19
- Repair 19
- Fluid plunger repair 20
- Pump repair 20
- Reconnect pump 21
- Check valves 22
- Inlet check valve repair 22
- Inlet check valve repair models pci xxx xxh only 23
- Outlet check valve repair 23
- Outlet check valve repair models pci xxx xxh only 24
- Pneumatic valve 25
- Replace complete pneumatic valve 25
- Replace seals or rebuild pneumatic valve 25
- Replace pilot valves 27
- Disconnect the pneumatic motor 28
- Reconnect the pneumatic motor 28
- Disassemble the pneumatic motor 29
- Reassemble the pneumatic motor 29
- Repair pneumatic motor 29
- Pci 350 25h xa 0 shown 32
- Python xl pneumatic pump 32
- Included with lower kit see lower configuration on page 4 33
- Not included with pci xxx xxh configurations 33
- Python xl pump lower parts list 33
- Replacement danger and warning labels tags and cards are available at no cost 33
- Part no b32251 3 in 88 mm shown 37
- Pneumatic motor parts 37
- Part no b32251 3 in 88 mm shown 38
- Pneumatic motor parts 38
- Pneumatic valve parts 39
- Complete pneumatic valve replacement kit 24a351 40
- Pneumatic valve parts 40
- Pneumatic valve repair kits 40
- Additional kits accessories 41
- Kits and accessories 41
- A b c d e 42
- Dimensions 42
- Python pump dimensions 42
- Python xl pump dimensions 42
- Wall bracket mounting hole diagram 43
- 3a3948b 44
- 4 plunger pci 350 25 44
- 8 plunger pci 350 38 44
- A 15 0 0 1 b 25 0 7 1 c 50 0 4 3 d 62 0 3 4 44
- A 15 0 0 1 b 25 0 7 1 c 50 0 4 3 d 75 0 2 5 e 100 0 9 6 44
- Gpd lpd 44
- Inlet pressure psi 44
- Outlet pressure psi mpa bar 44
- Performance charts 44
- 2 plunger pci 350 50 45
- 8 plunger pci 350 63 45
- A 15 0 0 1 b 25 0 7 1 c 50 0 4 3 d 75 0 2 5 e 100 0 9 6 45
- A3948b 45 45
- Gpd lpd 45
- Inlet pressure psi 45
- Mpa bar 45
- Outlet pressure psi mpa bar 45
- Performance charts 45
- 4 plunger pci 350 75 46
- Air gas consumption 46
- Gpd lpd 46
- Outlet pressure psi mpa bar 46
- The air gas consumption rate depends on the cycle rate of the pump to estimate your cycle rate see the baseline chemical dosage settings page 15 and the performance charts starting on page 44 46
- Python xl chemical injection pump 47
- Technical data 47
- April 2016 48
- For patent information see www graco com patents 48
- For the latest information about graco products visit www graco com 48
- Graco headquarters minneapolis international offices belgium china japan korea 48
- Graco inc and subsidiaries p o box 1441 minneapolis mn 55440 1441 usa copyright 2016 graco inc all graco manufacturing locations are registered to iso 9001 www graco com revision 48
- Graco information 48
- Graco standard warranty 48
- To place an order contact your graco distributor or call to identify the nearest distributor phone 612 623 6921 or toll free 1 800 328 0211 fax 612 378 3505 48
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