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18           308018

Troubleshooting

WARNING

ELECTRIC SHOCK HAZARD
Installing and servicing this equipment
requires access to parts which may
cause an electric shock or other serious

injury if the work is not performed properly. Do not
install or service this equipment unless you are
trained and qualified.

WARNING

PRESSURIZED EQUIPMENT HAZARD
To reduce the risk of an injury, follow the Pressure
Relief Procedure
 on page 13 before checking or
servicing any part of the system and whenever you
are instructed to relieve the pressure.

NOTE: Check all possible remedies in the Troubleshooting Chart before disassembling the gun.

Spray Pattern Troubleshooting

NOTE: Some spray pattern problems are caused by the improper balance between air and fluid.

Problem

Cause

Solution

Fluttering or spitting spray

The fluid supply is insufficient.

Adjust the fluid regulator, or fill the fluid
supply.

The fluid nozzle is loose, or the fluid noz-
zle taper seat is damaged.

Tighten or replace the fluid nozzle; see
page 24.

There is dirt between the fluid nozzle,
taper seat, and gun body.

Clean the parts; see page 17.

The coupler at the fluid inlet is loose or
cracked.

Tighten or repair the coupler.

Loose fluid tube in tank.

Tighten.

Improper spray pattern

There is fluid build-up on the air cap;
partially clogged horn holes; or full air
pressure from the clean horn hole forces
the fan pattern toward the clogged end.

Clean the air cap with a soft implement or
submerge it in water and wipe it clean;
see page 17.

The electrode is bent.

Straighten the electrode.

The fluid nozzle or air cap holes are dam-
aged.

Replace the damaged part; see page 24.

There is fluid buildup on the perimeter of
the fluid nozzle orifice, or a partially
clogged fluid nozzle orifice.

Remove the obstruction; never use wire
or hard instruments; see page 17.

The electrode is bent.

Straighten the electrode wire.

The fan air pressure is too high.

Reduce the fan air pressure.

The fluid is too thin.

Increase the fluid viscosity.

There is not enough fluid pressure.

Increase the fluid pressure.

The fan air pressure is too low.

Increase the fan air pressure.

The fluid is too thick.

Reduce the fluid viscosity.

There is too much fluid.

Reduce the fluid flow. Reduce fluid pres-
sure on pressure feed guns and/or adjust
the fluid adjusting screw until proper pat-
tern is obtained.

Streaks

The last coat of fluid is applied too wet.

Apply a drier finish using multiple strokes.

There is too much air pressure.

Decrease the air pressure.

The air pressure is insufficient.

Increase the air pressure.

The spray pattern is non-uniform.

Clean or replace the air cap; see page 17
or  24.

Содержание 222625

Страница 1: ...ally conductive solvent based coatings including metal flake paint Part No 222625 Series B PRO 3500hc Electrostatic High Conductivity Air Spray Gun Part No 223451 Conversion Kit To change the PRO 3500...

Страница 2: ...2 308018...

Страница 3: ...Test Gun Resistance 21 Test Power Supply Resistance 22 Test Resistor Stud Resistance 22 Service 24 Prepare the Gun for Service 24 Air Cap Nozzle Resistor Stud Replacement 24 Electrode Replacement 25 B...

Страница 4: ...tion Association NFPA 33 requirements use solvents with a flash point higher than 100 F 38 C or a solvent normally used in spray operations For European Countries complying with EN 50053 use solvents...

Страница 5: ...injury This equipment is for professional use only Read all the instruction manuals tags and labels before operating the equipment Use the equipment only for its intended purpose If you are uncertain...

Страница 6: ...tting B tube C nut D and ferrules E from the gun See Fig A CAUTION To ensure proper installation of the new parts make sure that the fluid seal A does not remain in the gun barrel 3 Using a soft brush...

Страница 7: ...308018 7 Converting a PRO 3500sc Gun to a PRO 3500hc Gun 06616 Fig A A B F G H J K L M C D E 06618 Fig B 10 12 06619 Fig C 06617 G H J 28 D E F 10 12 12a 12b Fig D L M...

Страница 8: ...off Valve Q Air Hose Ground Wire R Graco Electrically Conductive Air Hose S Electrostatic Spray Gun T Air Line Drain Valve U Fluid Drain Valve V Gun Air Inlet W Gun Fluid Inlet X Gun Exhaust Tube Requ...

Страница 9: ...haust will decrease the operating efficiency of the electrostatic system Air exhaust velocity of 100 ft min 31 linear meters minute should be sufficient Connect the Air Line Refer to Fig 1 WARNING ELE...

Страница 10: ...s which must be grounded Check your local electrical code for detailed grounding instructions Your system must be connected to a true earth ground 1 Pump ground the pump by connecting a ground wire an...

Страница 11: ...y gun and air hose 2 Turn the ES ON OFF Lever to OFF See Fig 4 page 14 for the location of the lever 3 Turn off the air and fluid supply to the gun The fluid hose must not have any fluid in it 4 Make...

Страница 12: ...12 308018 Notes...

Страница 13: ...ating Checklist Check the following list daily before starting to operate the system to help ensure safe efficient operation ____ 1 All the operators are properly trained to safely operate an electros...

Страница 14: ...zzle and air cap Install the air cap and fluid nozzle into the gun barrel as instructed in Air Cap Nozzle Resistor Stud Replacement page 24 Operating the Spray Gun WARNING PRESSURIZED EQUIPMENT HAZARD...

Страница 15: ...o 4 5 0 42 to 0 45 75 22 9 68 to 73 4 7 to 5 0 0 47 to 0 50 100 30 5 75 to 80 5 2 to 5 5 0 52 to 0 55 7 Set the atomizing air valve 31 about 1 5 turns out for most applications The Atomizing Air Valve...

Страница 16: ...ges Point the gun down while cleaning to prevent fluid from running into the air passages See Fig 6 Hang the gun with its nozzle pointing down when it is not being used Clean all parts with a non cond...

Страница 17: ...ning nut until it is snug allowing the air cap to turn with resistance 5 Test the gun resistance as instructed on page 21 Flush the Spray Gun WARNING ELECTRIC SHOCK HAZARD To reduce the risk of fire e...

Страница 18: ...en Improper spray pattern There is fluid build up on the air cap partially clogged horn holes or full air pressure from the clean horn hole forces the fan pattern toward the clogged end Clean the air...

Страница 19: ...good results The fluid is poorly mixed or filtered Remix or refilter the fluid An improper thinner is being used Use the proper thinner Excessive spray fog The air pressure is too high Reduce the air...

Страница 20: ...aint meter and probe The turbine alternator is not operating Check if the ES ON OFF lever is ON 1 Check the air supply to the gun Check for dirt or moisture in the turbine See page 30 The gun resistan...

Страница 21: ...m the hazardous area Or all spraying devices in the hazardous area are turned off ventilation fans in the hazardous area are operating and there are no flammable vapors in the area such as open solven...

Страница 22: ...ply is correct proceed to the next test If you still have problems refer to the Electrical Troubleshooting chart on page 20 for other possible causes of poor performance or contact the nearest authori...

Страница 23: ...nce is correct make sure the metal contact C in the barrel and the needle contact wire E are clean If the resistance is outside the specified range the resistor is defective and the resistor stud 22 m...

Страница 24: ...ement CAUTION Hold the front end of the gun up and trigger the gun while removing the nozzle and resistor stud to help drain the gun and prevent any fluid left in the gun from entering the air passage...

Страница 25: ...p nozzle and resistor stud as instructed on page 24 2 Unscrew and remove the fluid needle electrode 20 with the multi tool 62 Hold the needle shaft end to prevent it from turning See Fig 13 CAUTION Be...

Страница 26: ...tube See Fig 14 3 Using the wrench 63 supplied loosen the three socket head cap screws 5 4 Hold the gun handle 7 with one hand and pull the barrel 3 straight away from the handle to remove it See Fig...

Страница 27: ...gger screws 4 far enough to re move the trigger 13 4 Remove the packing cartridge and needle assem bly 28 using the multi tool 62 See Fig 16 CAUTION Clean all parts in non conductive solvent compatibl...

Страница 28: ...ly Place the spacer on the fluid needle 28a in the direction shown in Fig 17 Generously apply petroleum jelly to the outside of the spacer 3 Place the fluid packing 28e needle packing 28d and housing...

Страница 29: ...With a gentle side to side motion pull it free from the gun handle 7 Then pull the power cartridge straight out of the handle CAUTION To avoid a loss in electrostatic performance inspect the power ca...

Страница 30: ...sistance should be infinite If the resistance is not infinite replace the alternator 6 Connect the 3 wire connector to the 3 prongs in the power supply Push the alternator onto the power supply until...

Страница 31: ...using 4 Clean all the parts and inspect them for wear or damage 5 When reassembling the fan air valve 43 lubricate the o rings 43e and the adjustment knob threads 43c with petroleum jelly 6 After the...

Страница 32: ...tite or equivalent thread sealant to the sleeve 45d external threads Turn the sleeve in with the sleeve stop 45e until it bottoms out then back it out 1 8 turn CAUTION Do not allow Loctite to get onto...

Страница 33: ...unless it is dam aged 6 Install the air valve shaft 39 with the o ring 41 and spring 44 into the back of the gun handle 7 If the u cup 42 was removed install the air valve shaft 39 before installing...

Страница 34: ...parts Excessive lubricant on the o ring 36 can be pushed into the gun air pas sage and blemish the finish on the workpiece 6 Install the regulator disk 46 in the valve 38 with its bevelled side facing...

Страница 35: ...ard away from the gun barrel 3 until the shroud opening passes over the gun barrel threads 6 Continue to remove the shroud 10 by grasping the bottom as shown in Fig 24 and pushing up towards the barre...

Страница 36: ...18d 19 See Detail A 67 28a 43b 43d 43e 43c 18f 18e 12c REF 16 12a 12b 12e DETAIL A 28g 28b 28d 28e 28f 28c 28h 46 38 41 28 Item 12 includes items 12a to 12e Item 18 includes items 18a to 18f Item 28 i...

Страница 37: ...Y Includes items 28a 28h 1 28a 223024 NEEDLE fluid 1 Ref No Part No Description Qty 28b 185495 HOUSING packing 1 28c 185488 NUT packing 1 28d 178763 PACKING needle 1 28e 178409 PACKING fluid 1 28f 111...

Страница 38: ...d tube 1 12d 110077 FERRULES fluid tube 1 12e 111450 O RING fluoroelastomer 1 28 223444 FLUID PACKING NEEDLE ASSY Includes items 28a 28h 1 28a 223024 NEEDLE fluid 1 28b 185495 HOUSING packing 1 28c 18...

Страница 39: ...red Stainless steel braid ground path 0 315 in 8 mm ID 1 4 npsm f x 1 4 npsm f left hand thread 235068 6 ft 1 8 m 235069 15 ft 5 m 235070 25 ft 8 m 235071 36 ft 11 m 235072 50 ft 15 m 235073 75 ft 23...

Страница 40: ...8 npt f carbon steel and PTFE for non corrosive fluids MISCELLANEOUS ACCESSORIES Snap Ring Pliers 110090 For removing the ES ON OFF Valve Retaining Ring item 47 in Parts List Paint Resistance Meter 7...

Страница 41: ...ower 105 4 Db A Category Data Wetted Parts Stainless Steel Polyethylene Nylon Acetal PTFE Ultra High Molecular Weight Polyethylene Ceramic Fluoroelastomer Music Wire Noise levels measured with a 40 ps...

Страница 42: ...42 308018 Notes...

Страница 43: ...308018 43 Notes...

Страница 44: ...le 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 profits lost sales inju...

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