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8

306674U

Troubleshooting

WARNING

To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.

Before servicing this equipment always make sure to
Relieve the Pressure.

Note: Check all possible problems and solutions
before disassembling the pump.

Problem

Cause

Solution

Pump fails to operate.

Inadequate air supply pressure or
restricted air lines

Increase air supply; clear

Closed or clogged valves

Open; clean

Clogged fluid lines, hoses, valves,
etc.

Clear*

Damaged air motor

Service air motor

Exhausted fluid supply

Refill and reprime, or flush

Continuous air exhaust

Worn or damaged air motor gasket,
packing, seal, etc.

Service air motor

Erratic pump operation

Exhausted fluid supply

Refill and reprime, or flush

p

p p

Held open or worn intake valve or
piston packings

Clear; service

Pump operates, but output low on
upstroke

Held open or worn piston or packings

Clear; service

Pump operates, but output low on
downstroke

Held open or worn intake valve

Clear; service

Pump operates, but output low on
both strokes

Inadequate air supply or restricted air
lines

Increase air supply; clear

Closed or clogged valves

Open; clean

Exhausted fluid supply

Refill and reprime, or flush

Clogged fluid lines, hoses, valves,
etc.

Clear*

Packing nut too tight

Loosen

Loose packing nut or worn packings

Tighten; replace

* Follow the Pressure Relief Procedure, and disconnect the fluid line. If the pump starts when the air is turned

back on, the fluid line, hose, valve, etc. was clogged.

Summary of Contents for Fire-Ball 425 205394

Page 1: ...si 1 0 MPa 10 bar Maximum Air Input Pressure Model 205394 Series E Model 205395 Series N 306674U WARNING This pump is designed to be used only in pumping non corrosive and non abrasive oils and lubric...

Page 2: ...e equipment only for its intended purpose If you are not sure call your Graco distributor D Do not alter or modify this equipment D Check equipment daily Repair or replace worn or damaged parts immedi...

Page 3: ...s with your hand body glove or rag D Do not blow back fluid this is not an air spray system D Use only extensions and couplings that are designed for use with your dispensing valve D Follow the Pressu...

Page 4: ...e 1 1 1 trichloroethane methylene chloride other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment Such use could result in a chemical reaction with...

Page 5: ...per or cardboard which interrupts the grounding continu ity D To maintain grounding continuity when flushing or relieving pressure hold a metal part of the dispens ing gun firmly to the side of a grou...

Page 6: ...lator E to control pump speed WARNING A bleed type master air valve B is required to shut off and relieve air pressure that may be trapped in the air motor Trapped air could cause the pump to cycle un...

Page 7: ...tting coupler is clogged or that pressure has not been fully relieved after following the steps above VERY SLOWLY loosen the coupler or hose end cou pling and relieve pressure gradually then loosen co...

Page 8: ...motor gasket packing seal etc Service air motor Erratic pump operation Exhausted fluid supply Refill and reprime or flush p p p Held open or worn intake valve or piston packings Clear service Pump ope...

Page 9: ...306674U 9 Notes...

Page 10: ...70 78 73 1 69 72 79 2 66 80n 59 62 61n 67 62 68 Lips of v packings must face up Torque to 50 to 70 ft lb 68 to 95 N m 06336 72 1 4 ROD 71 Included in Repair Kit 239320 which may be purchased separate...

Page 11: ...en the packing housing 70 Unscrew the riser tube 79 from the air motor 5 Remove the packing housing 70 from the riser tube 79 and remove the packings from the housing 6 Hold the intake valve housing 6...

Page 12: ...ke Unscrew the cylinder cap nut 31 from the cylinder 32 Pull up on the cap nut Grip the trip rod 1 with padded pliers 207579 and screw the cap nut off the trip rod See Fig 4 CAUTION Do not damage the...

Page 13: ...the trip rod yoke 14 valve actuator 13 and trip rod 1 Check the exhaust valve poppets 38 for cracks NOTE To remove the exhaust valve poppets 38 stretch them out and cut with a sharp knife 8 Pull the p...

Page 14: ...opera tion of the pump Throat Packing Service The piston in the air motor located behind the air motor plates moves when air is supplied to the motor Moving parts can pinch or amputate your fingers or...

Page 15: ...ing and lower the piston into the base Reinstall the plate 36 and cylinder 32 Reassemble the air motor to the displacement pump 10 Torque the outlet adapter 42 to 45 to 55 ft lb 61 to 75 N m CAUTION W...

Page 16: ...ries N 400 lb 180 kg drum length 1 2 3 4 5 6 7 8 9 62 75 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 58 36 37 38 40 42 44 46 48 49 52 53 56 57 33 59 60 61 62 63 64 65 66 67 68 69 70 71...

Page 17: ...697 WASHER thrust 1 45 159047 NUT packing 1 46 159048 BEARING brass 1 47 159306 GLAND male 1 48 159307 GLAND female 1 49 159308 V PACKING nitrile rubber 4 52 162553 ROD piston 1 53 116343 SCREW ground...

Page 18: ...id Outlet 41 1 4 26 11 16 1048 mm 678 mm 14 9 16 369 9 mm Priming Piston 6 1 2 165 1 mm Diameter 3 8 npt Fluid Outlet 48 3 16 33 5 8 1224 mm 854 1 mm 14 9 16 369 9 mm 1 2 npt f Air Inlet 1 2 npt f Air...

Page 19: ...prox 19 cfm 0 53 m min at 1 gpm 3 8 lpm at 70 psi 0 48 MPa 4 8 bar Wetted parts steel brass aluminum leather Weight Model No 205394 34 lb 15 kg Model No 205395 37 lb 17 kg Sound Pressure Level measure...

Page 20: ...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 injury to person or property or any other incident...

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