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All written and visual data contained in this document reflects the latest product information available at the time of publication. 

Graco reserves the right to make changes at any time without notice.

For patent information, see www.graco.com/patents. 

Original instructions.

 This manual contains English. MM 332252

Graco Headquarters: 

Minneapolis

International Offices: 

Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

Copyright 2012, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.

www.graco.com

Revision A - February 2013

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in 
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty 
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by 
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written 
recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty 
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of 
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with 
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or 
maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of 
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned 
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs 
will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy 
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or 
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT 
MANUFACTURED BY GRACO

. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to 

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these 
warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or 
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the 
negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, 
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la 
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite 
de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com.

TO PLACE AN ORDER, 

contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.

Summary of Contents for IronMax V

Page 1: ...tectural paints and coatings Not approved for use in European explosive atmosphere locations Model 278667 3300 psi 22 7 MPa 227 bar Maximum Working Pressure Important Safety Instructions Read all warn...

Page 2: ...Pressure Control Board 19 Removal 19 Installation 20 Pressure Adjust Potentiometer 21 Removal 21 Installation 21 Pressure Control Transducer 22 Removal 22 Installation 22 Drive and Bearing Housing 23...

Page 3: ...rea shall be properly grounded to protect against static discharge and sparks Use Graco conductive or grounded high pressure airless paint sprayer hoses Verify that all containers and collection syste...

Page 4: ...ecure before operating the unit Know how to stop the unit and bleed pressure quickly Be thoroughly familiar with the controls ELECTRIC SHOCK HAZARD This equipment must be grounded Improper grounding s...

Page 5: ...nent See Technical Data in all equipment manuals Use fluids and solvents that are compatible with equipment wetted parts See Technical Data in all equipment manuals Read fluid and solvent manufacturer...

Page 6: ...tip or hose is clogged or that pressure has not been fully relieved after follow ing the steps above VERY SLOWLY loosen tip guard retaining nut or hose end coupling to relieve pressure gradually then...

Page 7: ...leaking Relieve pressure Repair prime valve Verify pump does not continue to stroke when gun trigger is released Prime valve not leaking Service pump see pump manual Leaking around throat packing nut...

Page 8: ...l Displacement rod is worn or damaged Replace rod see pump manual Fluid is spitting from gun Air in pump or hose Check and tighten all fluid connections Cycle pump as slowly as possible during priming...

Page 9: ...M WHAT TO CHECK HOW TO CHECK Sprayer does not run at all See flow chart page 15 Digital display is blank Control board status light never lights Sprayer does not run at all Check transducer or transdu...

Page 10: ...ol board socket Connect power set sprayer ON and control knob to 1 2 turn clockwise If sprayer does not run set sprayer to OFF and go to next step 5 Connect a confirmed working transducer to control b...

Page 11: ...re continue to step 4 4 Set sprayer to OFF and spin motor fan 1 2 turn Restart sprayer If sprayer runs replace control board If sprayer does not run continue to step 5 5 Perform Spin Test Test at larg...

Page 12: ...to sprayer 2 Disconnect thermal device connector from control board socket Make sure contacts are clean and secure 3 Check thermal device connector yellow wires at the motor 4 Measure resistance of t...

Page 13: ...ake sure motor air intake is not blocked 3 Make sure fan has not failed 4 Make sure control board is properly secured to back plate and that conductive thermal paste is used on power components 5 Repl...

Page 14: ...ilable Troubleshooting Procedure Plumb pressure gauge into paint hose plug sprayer in and turn power switch ON Does sprayer reach or exceed its maximum pressure Unplug the transducer from control boar...

Page 15: ...ucer to the board Does the motor run Replace potentiometer See Step 3 Is the proper reading present through the thermal switch wires Replace the ON OFF switch See step 4 Does the motor run See Step 1...

Page 16: ...ug power cord in and turn switch ON Connect probes to on off switch Turn meter to AC Volts STEP 3 Check motor thermal switch Unplug yellow wires Meter should read according to Resistance Table on page...

Page 17: ...ilable Troubleshooting Procedure Plumb pressure gauge into paint hose plug sprayer in and turn power switch ON Does sprayer reach or exceed its maximum pressure Unplug the transducer from control boar...

Page 18: ...wo screws 13 and remove rear shroud 58 3 Remove screws 31 and remove front shroud 51 Installation 1 Replace front shroud 51 and tighten screws 31 to 4 5 5 1 N m 40 45 in lb 2 Replace rear shroud 58 an...

Page 19: ...Diagram page 27 5 Remove ground screw 26 and wire 6 Disconnect black and blue leads from pressure con trol board to filter board 7 Remove four screws 39 and control board box 61 8 Remove grommet and...

Page 20: ...ontrol board box 61 and tighten four screws 39 Torque to 3 4 4 0 N m 30 35 in lb 5 Install ground wire and tighten screw 26 Recon nect all wiring see Wiring Diagram page 27 Torque to 2 5 3 2 N m 22 28...

Page 21: ...o loosen two screws on knob 34 4 Remove gasket 115 and unscrew potentiometer Installation 1 Screw replacement potentiometer into place and replace gasket 115 2 Rotate new potentiometer shaft to highes...

Page 22: ...grommet 86g 6 Remove wire from retaining clip 7 Remove transducer wiring protector 88 8 Use wrench to unscrew and remove transducer 86 Installation 1 Replace transducer 86 and use wrench to tighten t...

Page 23: ...85 bearing housing 83 and tighten screws 14 Torque to 31 2 39 4 N m 23 29 ft lb 3 Replace pump page 24 4 Lift retaining spring and replace pump pin 44 5 Replace pump rod covers 96 and tighten screws...

Page 24: ...d pump rod covers 96 4 Cycle pump until pump pin is in position to be removed Turn power switch OFF and unplug power cord 5 Push up retaining spring 43 and push pump pin 44 out 6 Disconnect hose 94 an...

Page 25: ...hose 94 8 Screw jam nut 95 up onto pump until nut stops Tighten jam nut by hand then tap 1 8 to 1 4 turn with a 20 oz maximum hammer to approximately 102 N m 75 5 ft lb 9 Install pump rod covers 96 an...

Page 26: ...our mounting bolts 37 and nuts 19 under neath sprayer NOTE Make sure motor is centered on frame mounting plate Torque to 23 1 31 3 N m 17 23 ft lb 2 Reconnect all wiring connections and place wires ba...

Page 27: ...Diagram 332252A 27 Wiring Diagram Black Pressure Transducer ON OFF Switch Power Plug Motor green ground Potentiometer Motor Leads Motor Sensor Leads Thermal Switch Brown Blue Blue Brown Blue Black ti...

Page 28: ...tion prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and t...

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