Graco 309550ZAE important safety instructions Impingement Port Drill Bit Sizes, Cbip

Page 22

Maintenance

5. Push mix chamber forward until impingement ports

(IP) are visible. See TABLE 3 for appropriate size drill to clean ports. Also see identification chart under Drill Bit Kits, page 39. Some mix chambers have counterbored holes (CB) and require two drill sizes to clean impingement ports completely.

Table 3: Impingement Port Drill Bit Sizes

Mix Chamber	Impingement Port (IP)	Counterbore (CB)
Part No.	Drill Bit Size	Drill Bit Size
	in. (mm)	in. (mm)


AR2020	#76, .020 (0.50)	#53, .060 (1.50)

AR2929	#69, .029 (0.70)	#53, .060 (1.50)

AR3737	#63, .037 (0.94)	N/A

AR4242	#58, .042 (1.00)	N/A

AR5252	#55, .052 (1.30)	N/A

AR6060	#53, .060 (1.50)	N/A

AR7070	#50, .070 (1.75)	N/A

AR8686	#44, .086 (2.15)	N/A

IP

TI2420A

CBIP

CB

	TI3533a
Mix Chambers AR and AF,	Mix Chambers AR and AF,
2020 and 2929	4242 or larger

AF2020	#76, .020 (0.50)	#53, .060 (1.50)

AF2929	#69, .029 (0.70)	#53, .060 (1.50)

AF4242	#58, .042 (1.00)	N/A

AF5252	#55, .052 (1.30)	N/A

6. Push mix chamber back in position.

7. Attach Front End, page 28.

8. Attach fluid manifold. Connect air. Return gun to service.

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Contents Plural Component, Impingement Mix Air Purge Spray Gun Psi 24.5 MPa, 245 bar Maximum Fluid Working PressureContents Manual ConventionsList of Models/Mix Chamber Selection Guide Round Pattern GunsFlat Pattern Guns Flat Pattern Stud Wall Gun Four-Hose Gun Spatter Pattern GunWide Round Pattern Gun Non 11 Ratio GunsPersonal Protective Equipment Fire and Explosion Hazard Overall View KeyKeep a and B Components Separate Piston Safety LockIsocyanate Hazard GroundingTurning Air Cap Follow Pressure Relief Procedure,Loss of Air Pressure Setup Resin ISOSetup Shutdown Pressure Relief Procedure Position Optional ConfigurationsOptional Fluid Manifold Remove Front End,Follow Pressure Relief Procedure, page 15. Also Optional Hose PositionFlat Spray Tips Maintenance Clean Muffler Clean Outside of GunClean Air Cap Clean Fluid ManifoldClean Impingement Ports Clean Mix Chamber NozzleClean Passages Nozzle Drill Bit SizesImpingement Port Drill Bit Sizes CbipTroubleshooting Problem Cause SolutionProblem Cause Solution Gun Triggered Fluid Spraying Theory of OperationGun Detriggered Air Purging Cutaway View Lubrication RepairTools Required Remove Front EndAttach Front End X ZMix Chamber and Side Seal Cartridges 18 B18c 18b 18d Check Valves Piston Piston Safety Lock Air ValveParts Check Valve 26 DetailSee Flat Pattern Guns, Part No. Description QtyRound Pattern Guns, See Supplied Tools,Detail Views Flat Pattern Guns Mix Chamber KitsRound Pattern Guns Mix Chamber Part No. Reference GuideCheck Valve Filter Screen Kits Flat Tip KitsGun Repair Kits Flat Tip Part No. Reference GuideDrill Bit Kits Kit Part No Qty in Kit Drill Bit Size Illustration Nominal119386 Air Purge Handle Cleanout Drill KitDrill Bit Kit 248969Stainless Steel Side Seal Kits AccessoriesWide Pattern Mix Chamber Kits Polycarballoy Side Seal KitsExtension Tip Air Cap Kit Extension Tip KitsExtension Tip Seal Kits Flat Pattern Stud Wall KitPour Nozzle Kit Spatter Conversion KitSolvent Flush Canister Kit Gun CoverGun Cleaning Kit Tip Cleanout ToolCirculation Manifold Air Flow Data in scfm m3/min Technical DataCategory Data Graco Standard Warranty For Graco Canada Customers