Graco A-25 Recirculation / Over Pressure Relief Block, Air Filter Element Removal

Page 25

Recirculation / Over Pressure Relief Block

Valves can be serviced with the block on the machine (see page 46 for parts view). For thorough cleaning, remove the block assembly as follows.

1.Disconnect two fluid tubes connected to back of recirculation block (3).

2.Loosen and remove two screws (10) in back of recir- culation block.

10

3

ti17995a

FIG. 4

3.See Fluid Manifold, page 46. Clean and inspect all parts for damage. Ensure that the seat (8a) and gasket (8b) are positioned inside each valve car- tridge (8).

4.Apply PTFE pipe sealant to all tapered pipe threads before reassembling.

5.Reassemble in reverse order, following all notes on page 46.

Repair

Air Inlet Filter / Water Separator (Auto Drain)

Air Filter Element Removal

1.Close air inlet valve (302) on filter (301).

2.Hold in metal spring clip and twist black cover coun- terclockwise to remove.

302 301

ti17996a

FIG. 5

3.Unscrew clear drain cover by hand.

4.Unscrew black filter element retainer to remove ele- ment.

5.Inspect filter element. Clean or replace.

Air Filter Element Installation

1.Insert cleaned or replacement filter (114228).

2.Hand-screw filter retainer into place.

3.Hand-screw clear drain cover until tight.

4.Reposition black cover and turn. Make sure it “snaps” back into place.

3A1570A

25

Image 25

Contents Repair-Parts Important Safety InstructionsContents Systems Proportioner ModelsRelated Manuals Manual DescriptionElectric Shock Hazard Fire and Explosion Hazard Equipment Misuse Hazard Important Two-Component Material Information Changing Materials Temperature Control Diagnostic Codes DataTrak Diagnostic CodesSymbol Code Code Name Diagnosis Cause Causes of E01 Errors E01 High fluid temperatureSensor Connector Continuity Checks Pins Description Reading ChecksE03 No zone current E02 High zone currentE06 Communication cable unplugged E05 Control board over temperatureE99 Loss of communication Before Beginning Repair Pressure Relief ProcedureShutdownOpen Close ParkFlushingProblems TroubleshootingPower Pumps and PressuresProblem Cause Solution Electronics Problem Cause SolutionProblem Cause Solution Heater See E04 Fluid Temperature SenSor FTS or thermocouple discon Hose Heat System Problem Cause Solution Repair Follow Pressure Relief Procedure,Disconnect Pump Connect Pump Remove Air Motor Install Air MotorRecirculation / Over Pressure Relief Block Air Filter Element InstallationAir Inlet Filter / Water Separator Auto Drain Air Filter Element RemovalTemperature Control Module Connections Temperature Control ModuleConnector Description Bottom of Power ModulesTest SCR Circuit Replacing Temperature Control Assembly ModulesHeater Element Primary HeaterLine Voltage KW Dual Zone Heater Thermocouple ThermocoupleCheck Hose Connectors Overtemperature SwitchPins Result Heated HoseInstallation Fluid Temperature Sensor FTSTest/Removal Transformer Secondary Check Replace Transformer Transformer Primary CheckModel Secondary Voltage Size Component Replace Circuit Breaker ModulePump Lubrication System Pump Lubrication SystemRefer to Reactor A-25 Wiring Schematic, Temperature DisplayFluid Inlet Strainer Screen Display Module Detail of Membrane Switches and Temperature Display BoardReplace Battery Replace DataTrak Battery or FuseReplace Fuse Recommended Spare Parts Accessories7984 100 888 PartsTorque pump locking nuts to 66-74 ft-lbs 90-100 Nm Cart Part Description QtyNipple Screw Control PanelWheel Kit Temperature ControlRef. Part Description Qty Fluid Inlet Kit Fluid ManifoldRing Kw Dual Zone Heater, 24J788PLUG, Pipe Air Motor Pump AssemblyLength Connection Outside Ft m From Air Tubing ConnectionsColor Diameter Breaker Module Phase Reactor A-25 Wiring SchematicPOD Reactor A-25 Wiring Schematic Simplified Schematic, Heater Controls Category Data Technical DataGraco Information Graco Standard Warranty

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