Graco Inc EM390 instruction manual Shutdown and Care

Page 12

SHUTDOWN AND CARE

1.Check the packing nut/wetcup daily. First relieve the pressure; see page 9. Be sure the wetcup is 1/3 full of TSL at all times to help prevent fluid buildup on the piston rod and premature wear of packings. The packing nut should be tight enough to stop leakage, but no tighter. Overtightening may cause binding and excessive packing wear. See Fig 12±1.

2.Clean the fluid filter often and before storing the sprayer. First relieve pressure; see page 9. See manual 307±273, supplied, for the filter cleaning procedure.

3.Flush the sprayer at the end of each work day and fill it with mineral spirits to help prevent pump corro- sion and freezing. Refer to the flushing guidelines on pages 13 and 14.

TIGHTEN

PACKING NUT/WETCUP Keep 1/3 full with TSL. Tight- en nut by turning clockwise

Fig 12±1

0665

CAUTION

Never leave water or any paint in the sprayer over- night to: (1) prevent pump corrosion; (2) prevent the fluid from freezing in the pump and pressure control which can cause loss of pressure, stalling or serious sprayer damage.

Always use mineral spirits for the final flush, relieve pressure and leave the mineral spirits in the sprayer.

4.For very short shutoff periods, leave the suction tube in the paint, relieve the pressure, and clean the spray tip.

5.Coil the hose and hang it on the cart's hose rack when storing it, even for overnight, to help protect the hose from kinking, abrasion, coupling damage, etc. See Fig 12±2.

6.For the Lo±Boy cart, use the brackets on the side of the cart to hold the suction assembly. See the Parts Drawing on page 31.

7.Lubricate the bearing housing after every 100 hours of operation. Remove the drive housing cover. Fill the bearing housing with SAE non-detergent oil. See Fig 12±3.

HOSE RACK

FLUID FILTER

Fig 12±2

EVERY 100 HOURS OF OPERATION FILL BEARING HOUSING CAVITY WITH SAE NON-DETERGENT OIL

0663

WARNING

Refer to the warning section HOSE SAFETY on page 3 for information on the hazard of using dam- aged hoses.

Fig 12±3

12307-724

0670

Image 12
Contents Model 231±001, Series B Model 231±390Model 231±018 Model 220±726, Series CGeneral Safety Spray Gun Safety DevicesSpray Tip Safety Medical Alert±±Airless Spray WoundsFlushing Safety System PressureFluid and Solvent Compatibility Hose Grounding ContinuityConsignes générales de sécurité Soins médicauxDispositifs de sécurité du pistolet Consignes de sécurité concernant lajutage du pulvérisateurPression Compatibilité chimique des corpsMise à la terre ou à la masse Continuité de la mise à la terre des tuyauxEL Rociado a Alta Presion Puede Causar Graves Lesiones Seguridad generalTratamiento médico Aparatos de seguridad de la pistola pulverizadoraPresión del sistema Compatibilidad de fluidoPuesta a tierra Continuidad del circuito de puesta a tierra de la mangueraSetup Check the electrical serviceConnect the hose and gun. See ±1 Plug in the sprayerPressure Relief Procedure OperationInstall the spray tip and tip guard Prime the sprayer with paintAdjust the spray pattern Cleaning a Clogged TipShutdown and Care When to Flush Startup after storageHOW to Flush Application Methods Right WrongTroubleshooting Guide Pressure Relief ProcedureProblem Cause Solution Fluid supply often to prevent running the pump Displacement Pump Reassembly NotesReinstalling the Pump. See ±1 Removing the Pump. See ±1Reassembly Procedure 204206 222Replacing the Connecting ROD and Bearing Replacing the Drive Assembly 55d 55aReplacing the Electric Motor & Capacitor Capacitor303 23fReplacing the Pressure Control & Circuit Board Circuit Board RemovalPressure Control Removal Pressure Control Adjustment Service Tools NeededFollow the Pressure Relief Procedure Warning, above 0750 Parts Drawing & List ± Pressure Control Circuit Board ApplicationsDisplacement Pump Parts Drawing & List Model 218±215, Series C Carbon Steel Displacement PumpDescription Qty Parts List ± Sprayer with Upright Cart Model 231±001, Series B, Basic SprayerParts Drawing ± Sprayer with Upright Cart Model 231±001, Series BParts List ± Sprayer with LO-BOY Cart Model 220±726, Series C, Basic SprayerParts Drawing ± Sprayer with LO-BOY Cart Model 220±726, Series CDetail a Parts Drawing & List ± Complete Sprayers Model 231±390 Complete Upright Sprayer with Flex GunModel 231±018 Complete Upright Sprayer with Contractor Gun Model 231±051 Complete Lo±Boy Sprayer with Flex GunAccessories Manual Change SummaryTechnical Data DimensionsImportant Phone Numbers To you 1±800±328±0211 Toll Free307-724 Table of Contents Graco Warranty and DisclaimersModel 231±390 shown Graco INC. P.O. BOXMINNEAPOLIS, MN 55440±1441 Upright LoBoyInjection Hazard Packing Repair Kit 222±587