Graco 16P957, 16T311 important safety instructions Troubleshooting, Ram

Page 16

Troubleshooting

Troubleshooting

Check all possible problems before disassembling the ram, pump, or platen. Refer to Xtreme Pump Packages man- ual 311762 for pump troubleshooting.

Ram

Problem

Cause

Solution

 

 

 

Decreasing spraying pressure or

Material beginning to cure in lines.

Flush immediately.

poor spray pattern.

 

 

 

 

 

Ram will not raise or lower.

Closed air valve or clogged air line.

Open, clear.

 

 

 

 

Not enough air pressure.

Increase.

 

 

 

 

Worn or damaged piston.

Replace. See Supply Unit Repair

 

 

on page 20.

 

 

 

 

Hand valve closed or clogged.

Open, clear.

 

 

 

Ram raises and lowers too fast.

Air pressure is too high.

Decrease.

 

 

 

Air leaks around cylinder rod.

Worn rod seal.

Replace. See Supply Unit Repair

 

 

on page 20.

 

 

 

Fluid squeezes past ram plate wip-

Air pressure too high.

Decrease.

ers.

 

 

Worn or damaged wipers.

Replace. See Remove and Rein-

 

 

 

stall Wiper on page 14.

 

 

 

Pump will not prime properly or

Closed air valve or clogged air line.

Open, clear.

pumps air.

 

 

Not enough air pressure.

Increase.

 

 

 

 

 

Worn or damaged piston.

Replace. See pump manual.

 

 

 

 

Hand valve closed or clogged.

Open, clear. See Platen Mainte-

 

 

nance on page 13.

 

 

 

 

Hand valve is dirty, worn, or dam-

Clean, service.

 

aged.

 

 

 

 

Air assist valve will not hold drum

Closed air valve or clogged air line.

Open, clear. See Platen Mainte-

down or push plate up.

 

nance on page 13.

 

 

 

 

Not enough air pressure.

Increase.

 

 

 

 

Valve passage clogged.

Clean. See Platen Maintenance on

 

 

page 13.

 

 

 

16

3A2798D

Image 16
Contents Important Safety Instructions Gallon 20 liter, with cartGallon 20 liter, no cart II 2 G c T2Contents Related ManualsSkin Injection Hazard Equipment Misuse Hazard See on Component IdentificationKey Integrated Air Controls Air Line AccessoriesIntegrated air controls include Platen Component Identification Model 16U676, 20 liter 5 gallonGeneral Information Grounding InstallationLocation Mechanical Setup Connect Mix Line and GunAttach Drum Stops IG Ram BasePressure Relief Procedure Flush Before Using EquipmentSupply System Operation Before OperatingStart and Adjust Ram Start and Adjust PumpChange Drums FlushShutdown and Care of the Pump Replace Throat Seals Before Beginning Repair Maintenance Procedures Platen Maintenance Adjust Spacers Use Platen with Tapered and Straight Sided PailsReassemble 20 Liter Wiper Assembly Remove and Reinstall WiperUse platen with straight sided pail Platen Assembly 411 418 412 420 419 409 414 415 406 407 402 403 405Troubleshooting RamInstall Wipers RepairDisconnect Pump from Platen Connect Platen to PumpDisconnect Displacement Pump Install Displacement PumpConnect Displacement Pump Remove Displacement PumpDisconnect air hose from air motor fitting 7. See Remove Air Motor Install Air MotorConnect air hose to air motor fitting 7. See Repair Parts Supply Unit RepairRam Piston Rods Disassemble Piston Rod Seal and BearingAssemble Piston Rod Seal and Bearing Disassemble Ram PistonXtreme PFP, 16P957 and 16T311 Parts22 5 RAM, dual post, motor regulator Part DescriptionQty 1 4 4 1 2 1 1 1 1 1 1 Cart, 16P434 Part Description QtyPumpline 201 212 215 202 229 216 203 204 207 206 205333 332 331 303 310 335 315 314 313 Ram Frame320 305 321 318 326 307 308 312 324 304, 310 305 301 6 334 Ram Frame Parts Description Qty Part Description20L Platen, 16U676 411 418 412419 401 BASE, platen, 20L 402 276049 403 405Check Valve 16T481 1205 1206 1207 1204 1201Accessories Static Mixer Kit, 16T316 Static Mixer 16T316Dimensions Technical Data Maximum fluid working pressure3A2798D Graco Standard Warranty Graco Information