User manual GRACO PRO MIX 2KS 312776B

[. . . ] Operation ® ProMix 2KS 312776B ENG Plural Component Proportioner Manual system for proportional mixing of plural component coatings. Important Safety Instructions Read all warnings and instructions in this manual. Some components shown are not included with all systems. TI12504a II 2 G Contents Related Manuals . 90 2 312776B Related Manuals Related Manuals Component Manuals in English Manual 312775 312777 312781 312782 312783 312787 312784 310745 312786 312785 308778 313599 313290 313542 313386 406799 406800 Description ProMix 2KS Manual System Installation ProMix 2KS Manual System Repair-Parts Fluid Mix Manifold Dispense Valve Color Change Valve Stacks Color Change Module Kit Gun Flush Box Kits Gun Air Shutoff Kit Dump Valve and Third Purge Valve Kits Network Communication Kits G3000/G3000HR Flow Meter Coriolis Flow Meter Floor Stand Kit Beacon Kit Basic Web Interface/Advanced Web Interface 15V256 Automatic System Upgrade Kit 15V825 Discrete I/O Board Kit Equipment Approvals Equipment approvals appear on the following labels which are attached to the Fluid Station and EasyKeyTM. [. . . ] Monitor system performance by watching the EasyKey display for warning messages which provide information on system performance, and adjust pressures accordingly. See Table 6 on page 47. e ang ol R n tr Co B Pressure Too Low B Pressure Too High A Pressure B Pressure FIG. A/B Control Range with Properly Sized Restrictor ge Ra n trol all) Co n o s m (to B Pressure Too Low B Pressure Too High A Pressure B Pressure NOTE: If the restrictor is too small, it may be necessary to supply more differential pressure than is available in your system. B Pressure Too Low, displayed on EasyKey 46 312776B System Operation Table 6: Dynamic Dosing Troubleshooting Guide (for complete system troubleshooting, see Table 11 beginning on page 74) Warning/Alarm Message B Pressure Too Low (see FIG. 56) · · · · · · · · · · Solution Increase B pressure. Verify B valve is opening properly. B Pressure Too High Off Ratio Low Off Ratio High Mix Manifold Valve Settings To open dose or purge valves, turn hex nut (E) counterclockwise. Valve Adjustment Table 7: Mix Manifold Valve Settings Valve Dose (FIG. 67) Setting Hex nut (E) 1-1/4 turns out from fully closed Hex nut (E) 1-1/4 turns out from fully closed Fully open during Run/Mix operation Fully closed during Run/Mix operation Function Limits maximum fluid flow rate into integrator and minimizes valve response time. Limits maximum fluid flow rate into integrator and minimizes valve response time. Closes component A and B ports to integrator during ratio check or meter calibration. Do not open sampling valves unless fluid shutoff valves are closed. 312776B 47 System Operation Air Flow Switch (AFS) Function Air or Air-assisted Guns The air flow switch (AFS) detects air flow to the gun and signals the ProMix controller when the gun is triggered. The AFS functions with the flow meters to ensure that system components are functioning correctly. For example, if a flow meter fails or clogs, pure resin or catalyst could spray indefinitely if the ProMix does not detect the condition and intervene, which is why the AFS is so important. If the ProMix detects through the AFS signal that the gun is triggered, yet there is no fluid flow through the meter, a Dose Time Alarm (E-7 or E-8) occurs after 40 seconds and the system shuts down. Operating Without Air Flow Switch It is not recommended to run without an air flow switch. If a switch fails, replace it as soon as possible. Airless Gun It is not recommended to use an airless gun with the ProMix 2KS. Two issues can arise from operating without an air flow switch: · Without a gun trigger/air flow switch input the ProMix 2KS does not know it is spraying and will not generate a Dose Time Alarm (E-7 or E-8). Since the ProMix 2KS does not know it is spraying because there is no gun trigger/air flow switch input, it will go into System Idle (E-15) every 2 minutes when in Mix mode. · System Idle Warning (E-15) AFS TI13350a This warning occurs if the ProMix is set to Mix , and 2 minutes have elapsed since the system received a flow meter pulse. In applications using the AFS, triggering the gun clears the warning and you can start spraying again. To start spraying again, you must press Standby , then Mix , then trigger the gun. FIG. 60: Air Flow Switches 48 312776B System Operation Start Up 1. Table 8: Pre-Operation Checklist Checklist System grounded Verify all grounding connections were made. All connections tight and correct Verify all electrical, fluid, air, and system connections are tight and installed according to the Installation manual. [. . . ] 303, 304 SST, Tungsten carbide (with nickel binder), perfluoroelastomer; PTFE * Dependent on programmed K-factor and application. The maximum allowable flow meter pulse frequency is 425 Hz (pulses/sec). For more detailed information on viscosities, flow rates, or mixing ratios, consult your Graco distributor. See individual component manuals for additional technical data. 312776B 89 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. [. . . ]