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Table of Contents

Safety Precautions .................................................................2

Specifications .........................................................................3

General Description ...............................................................4

Operation ................................................................................4

Setup ....................................................................................4
Preparing to Paint .................................................................4
Painting .................................................................................5
Pressure Relief Procedure ...................................................5

Spraying ..................................................................................6

Spraying Technique ..............................................................6
Practice .................................................................................6

Cleanup ...................................................................................6

Cleaning the Spray Tip .........................................................7

Maintenance............................................................................7

General Repair and Service Notes.......................................7
Replacing the PRIME/SPRAY Valve.....................................7
Replacing the Filters .............................................................8
Replacing the Motor Assembly .............................................8
Replacing the Gears .............................................................9
Replacing the Transducer.....................................................9
Servicing the Fluid Section .................................................10

Troubleshooting ...................................................................12

Parts List ...............................................................................18

Main Assembly....................................................................18
Motor Assembly ..................................................................19
Suction Set Assembly .........................................................19
Labels .................................................................................19
Gear Box Assembly ............................................................20
Stand Assembly ..................................................................21
Upright Cart Assembly ........................................................21
Fluid Section Assembly ......................................................22
Low Boy Cart Assembly......................................................23
Electrical Schematic ...........................................................23

Limited Warranty ..................................................................24

Safety Precautions

This manual contains information that must be read and
understood before using the equipment. When you come to an
area that has one of the following symbols, pay particular
attention and make certain to heed the safeguard.

This symbol indicates a potential hazard that may cause
serious injury or loss of life. Important safety information will
follow.

This symbol indicates a potential hazard to you or to the
equipment.  Important information that tells how to prevent
damage to the equipment or how to avoid causes of minor
injuries will follow.

HAZARD: Injection injury  -  A high pressure fluid stream

produced by this equipment can pierce the

skin and underlying tissues, leading to serious

injury and possible amputation.  See a

physician immediately.

DO NOT TREAT AN INJECTION INJURY AS A SIMPLE

CUT!  Injection can lead to amputation. See a physician

immediately.

The maximum operating range of the sprayer is 3100 PSI/

21.4 MPa fluid pressure.

PREVENTION:

• NEVER aim the gun at any part of the body. 
• NEVER allow any part of the body to touch the fluid stream.

DO NOT allow body to touch a leak in the fluid hose.

WARNING

NOTE: Notes give important information which should

be given special attention.

CAUTION

WARNING

2

© SprayTECH.  All rights reserved.

• NEVER put hand in front of the gun.  Gloves will not

provide protection against an injection injury.

• ALWAYS lock gun trigger, shut pump off, and release all

pressure before servicing, cleaning tip or guard, changing
tip, or leaving unattended. Pressure will not be released
by turning off the motor.  The PRIME/SPRAY valve handle
must be turned to PRIME to relieve the pressure.  Refer to
the PRESSURE RELIEF PRESSURE described in the
pump manual.

• ALWAYS keep tip guard in place while spraying. The tip

guard provides some protection but is mainly a warning
device.

• ALWAYS remove the spray tip before flushing or cleaning

the system.

• Paint hose can develop leaks from wear, kinking and

abuse.  A leak can inject material into the skin.  Inspect
the hose before each use.

• NEVER use a spray gun without a working trigger lock

and trigger guard in place.

• All accessories must be rated at or above the maximum

operating pressure range of the airless sprayer.  This
includes spray tips, guns, extensions, and hose.

HAZARD: EXPLOSION AND FIRE - Solvent and paint

fumes can explode or ignite.  Severe injury

and/or property damage can occur.

PREVENTION:

• Provide extensive exhaust and fresh air introduction to

keep the air within the spray area free from accumulation
of flammable vapors.

• Avoid all ignition sources such as static electricity sparks,

electrical appliances, flames, pilot lights, hot objects, and
sparks from connecting and disconnecting power cords or
working light switches.

• Do not smoke in spray area.
• Fire extinguisher must be present and in good working

order.

• Place pump at least 25 feet (7.6 m) from the spray object

in a well ventilated area (add more hose if necessary).
Flammable vapors are often heavier than air.  Floor area
must be extremely well ventilated.  The pump contains
arcing parts that emit sparks and can ignite vapors. 

• The equipment and objects in and around the spray area

must be properly grounded to prevent static sparks.

• Use only conductive or grounded high-pressure fluid hose.

Gun must be grounded through hose connections.

• Power cord must be connected to a grounded circuit.
• Always flush unit into separate metal container, at low

pump pressure, with spray tip removed.  Hold gun firmly
against side of container to ground container and prevent
static sparks.

• Follow material and solvent manufacturer's warnings and

instructions.

• Use extreme caution when using materials with a

flashpoint below 70° F (21° C). Flashpoint is the
temperature at which a fluid can produce enough vapors
to ignite.

• Plastic can cause static sparks.  Never hang plastic to

enclose spray area.  Do not use plastic drop cloths when
spraying flammable materials.

• Use lowest possible pressure to flush equipment.

NOTE TO PHYSICIAN:

Injection into the skin is a traumatic injury.  It is

important to treat the injury as soon as possible. DO

NOT delay treatment to research toxicity.  Toxicity is a

concern with some coatings injected directly into the

blood stream. Consultation with a plastic surgeon or

reconstructive hand surgeon may be advisable.

Summary of Contents for 0551050

Page 1: ...the U S A EPX2255 Piston Pump Owner s Manual SprayTECH 1770 Fernbrook Lane Minneapolis MN 55447 Technical Assistance 1 800 292 4637 Order Entry 1 800 443 4500 Fax 1 800 525 9501 www spraytechinc com M...

Page 2: ...cribed in the pump manual ALWAYS keep tip guard in place while spraying The tip guard provides some protection but is mainly a warning device ALWAYS remove the spray tip before flushing or cleaning th...

Page 3: ...vels guns and accessories must be pressure rated at or above the maximum operating pressure range of the airless sprayer Do not spray outdoors on windy days Wear clothing to keep paint off skin and ha...

Page 4: ...e the third prong or use an adapter Preparing a New Sprayer If this sprayer is new it is shipped with test fluid in the fluid section to prevent corrosion during shipment and storage This fluid must b...

Page 5: ...E SPRAY valve up to the SPRAY position 10 Turn on the sprayer 11 Unlock the gun by turning the gun trigger lock to the unlocked position Ground the gun by holding it against the edge of the metal cont...

Page 6: ...ON OFF switch to the OFF position and unplug the sprayer Practice 1 Be sure that the paint hose is free of kinks and clear of objects with sharp cutting edges 2 Turn the pressure control knob counterc...

Page 7: ...ose in the waste container when moving the PRIME SPRAY valve to PRIME in case the sprayer is pressurized WARNING SprayTECH All rights reserved 7 Do not attempt to clean the tip with your finger Do not...

Page 8: ...manifold 8 SprayTECH All rights reserved Replacing the Motor Assembly Electrostatic discharge ESD potential could cause damage to electronic control Use SprayTECH ESD wrist strap P N 0507958 or equiva...

Page 9: ...from the gear box housing Remove the front cover plate Using a rubber mallet carefully tap on the front of the motor crankshaft that extends through the slider assembly WARNING Replacing the Transduc...

Page 10: ...n rod attached to the pump This will prevent the piston rod from rotating during disassembly of the outlet valve Outlet Valve Retainer Outlet Valve Seat Outlet Valve Ball Outlet Valve Cage Piston Rod...

Page 11: ...hose clip on the siphon tube 19 For Low Boy cart units insert the elbow on the suction set assembly into the bottom of the inlet valve housing Push the retaining ring up into the groove inside the in...

Page 12: ...ats following the Servicing the Fluid Section procedure in the Maintenance section of this manual 10 Take unit to a SprayTECH authorized service center 1 Repack the pump following the Servicing the Fl...

Page 13: ...hose with a minimum of 50 of 1 4 grounded textile braid airless paint spray hose 2 Replace the spray tip following the instructions that came with the spray gun 3 Rotate the pressure control knob cou...

Page 14: ...tion particuli re ATTENTION AVERTISSEMENT DANGER RISQUES D EXPLOSION OU D INCENDIE Les vapeurs d gag es par le solvant ou la peinture sont explosives et inflammables et peuvent causer des corporels s...

Page 15: ...ur assume tous les risques et responsabilit s lorsqu il utilise des pi ces qui ne sont pas conformes aux caract ristiques techniques minimales ainsi qu aux dispositifs de s curit du fabricant de la po...

Page 16: ...PARA PREVENIR Debe proveerse un escape y aire fresco para hacer que el aire que est dentro del rea de atomizaci n se mantenga libre de acumulaciones de vapores inflamables Evite todas las fuentes de i...

Page 17: ...cela con otra manguera conectada a tierra Todas las mangueras soportes giratorios pistolas y accesorios que se usen con esta unidad deben tener una capacidad de presi n de 3100 lb pulg2 21 4 MPa o may...

Page 18: ...7783 Hose clip upright cart only 1 10 0551556 Return hose upright cart only 1 11 0508552 Siphon tube upright cart only 1 12 5006536 Inlet screen upright cart only 1 13 Gear box assembly 1 Item Part De...

Page 19: ...d be performed by a SprayTECH authorized service center Motor Assembly Suction Set Assembly P N 0551104 Item Part Description Quantity 1 0551437 Siphon tube assembly 1 2 0551439 Return hose 1 3 027945...

Page 20: ...20 SprayTECH All rights reserved 1 2 3 4 5 9 10 11 12 13 14 15 16 17 6 7 8 18 19 20 21 23 22 24 NOTE All electrical work should be performed by a SprayTECH authorized service center Gear Box Assembly...

Page 21: ...07751 Port plug 1 24 0551601 Heat sink assembly includes items 22 and 23 1 0551520 Mechanical control assembly includes items 11 14 Stand Assembly Item Part Description Quantity 1 0508377 Cord wrap 1...

Page 22: ...sembly 2 9 0551537 Piston rod 1 10 0295307 Outlet valve cage 1 11 50164 Outlet valve ball 1 12 13359 Outlet valve seat 1 13 13481 Outlet valve retainer 1 14 0508676 Piston bushing 1 15 0508739 Nylon w...

Page 23: ...oll pin 2 3 0294534 Wheel spacer 4 4 0270394 Wheel 2 5 9890104 Cap 2 6 0551548 Plug 2 7 0295615 Lock nut 2 8 0507955 Screw 1 9 0295618 Screw 2 10 0551551 Mounting bracket left 1 11 0551552 Mounting br...

Page 24: ...TECH HEREBY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO THE EXTENT PERMITTED BY LAW THE DURATION OF ANY IMPLI...

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