User manual GRACO PRO MIX 2KS 312776B

[. . . ] Operation ® ProMix 2KS 312776B ENG Plural Component Proportioner Manual system for proportional mixing of plural component coatings. Approved for use in explosive atmospheres (except the EasyKey). Important Safety Instructions Read all warnings and instructions in this manual. See page 4 for model information, including maximum working pressure. [. . . ] 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). This means there is no way to detect a failed meter. You could spray pure resin or catalyst for 2 minutes without knowing. 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. Without the AFS, triggering the gun does not clear the alarm. 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. Go through the Pre-Operation Checklist in Table 8. 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. Fluid supply containers filled Check component A and B and solvent supply containers. Mix manifold valves set Check that mix manifold valves are set correctly. Start with the settings recommended in Mix Manifold Valve Settings, page 47, then adjust as needed. Fluid supply valves open and pressure set Component A and B fluid supply pressures should be equal unless one component is more viscous and requires a higher pressure setting. Solenoid pressure set 75-100 psi inlet air supply (0. 5-0. 7 MPa, 5. 2-7 bar) 2. Turn the AC Power Switch ON (I = ON, 0 = OFF). Make sure that the Booth Control is working. The active recipe number should display and the Standby LED should be lit. [. . . ] 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. [. . . ]