User manual GRACO PROMIX II 310653E

[. . . ] Service - Parts ProMixTM II For use in explosive atmospheres (except the EasyKeyTM). Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. 310653E ENG For proportional mixing of plural component coatings. For professional use only. Manual Conventions Contents Manual Conventions . 12 Fluid Panel Control Board Diagnostics . [. . . ] Install new control board (706) with 4 screws (707). 15. Insert fiber optic cable connectors (J4, J6) into board connectors (E), matching blue with blue, black with black, and hand-tighten connectors (E). 17. J10 J5 J3 J6 J4 J1 J9 J8 14 706 7. Fluid Panels with Color Change: Orient the EEPROM (U25) so its notch lines up with the notch marked on the fluid control board and install it in the board. The EEPROM leads may need to be bent slightly inward to fit in the socket. 15 CAUTION To avoid damaging circuit board when servicing, wear grounding strap on wrist and ground appropriately. Replacing Control Board 1. Disconnect fiber optic wires and all cables (J1, J3, J4, J5, J6, J8, J9, J10) from control board (706). Turn EasyKeyTM power on to test operation. 3. Fluid Panels with Color Change: Carefully remove color change EEPROM (U25) from the control board with a chip puller. Panels without color change do not include the EEPROM. 706 707 TI4868a FIG. 16 20 310653E Service Replacing Air Flow or Pressure Switch The air flow switch (702) detects whether there is atomizing air flow to the gun (gun is triggered). The pressure switch (717) detects if a gun is in the gun flush box with the box door closed. Solenoid Standard 1 2 3 Actuates Dispense Valve A Dispense Valve B Air Purge Valve A Solvent Purge Valve B 1. Follow Preparation procedure, page 19, and shut off power at main circuit breaker. 4 Optional 5 6 7 2. Air Flow Switch (702): Disconnect wires from connector (V). Pressure Switch (717): Disconnect wires from switch, noting their connection points. 18. Gun Flush Box Pilot Valve Color Change Solvent Valve Color Change Valve 1 Color Change Valve 2 Color Change Valve 3 Color Change Valve 4 Color Change Valve 5 Color Change Valve 6 716 717 706 V 3. Air Flow Switch (702): Unscrew nut from fitting (704a), and remove assembly from enclosure. Remove fittings from air flow switch (702). Pressure Switch (717): Unscrew bushing (716) from fitting (704b). Remove bushing from pressure switch (717). 8 9 10 11 12 4. Apply pipe thread sealant to new air flow or pressure switch threads and install. 5. Reconnect wires that were disconnected in step 2. Switch wires are not polarized. 704b 702 6. [. . . ] 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. [. . . ]