Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.” They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) , and other safety regulations.
Page 4
Safety Instructions Caution The product is provided for use in manufacturing industries. The product herein described is basically provided for peaceful use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary. If anything is unclear, contact your nearest sales branch.
Page 5
VQC4000 Series Precautions for 5 Port Solenoid Valve 1 Be sure to read before handling. Refer to main text for detailed precautions on every series. Design / Selection 9. Regarding vacuum switch valves and vacuum release valves Warning If a non-vacuum valve is installed in the middle of a 1.
Page 6
VQC4000 Series Precautions for 5 Port Solenoid Valve 2 Be sure to read before handling. Refer to main text for detailed precautions on every series. 4. Surge voltage intrusion Design / Selection With non-polar type solenoid valves, at times of...
VQC4000 Series Precautions for 5 Port Solenoid Valve 3 Be sure to read before handling. Refer to main text for detailed precautions on every series. 3. Tighten threads with the proper Design / Selection tightening torque. When installing the products, follow the listed torque Caution specifications.
VQC4000 Series Precautions for 5 Port Solenoid Valve 4 Be sure to read before handling. Refer to main text for detailed precautions on every series. Wiring Air Supply Warning Warning 1. The solenoid valve is an electrical 1. Type of fluids product.
VQC4000 Series Precautions for 5 Port Solenoid Valve 5 Be sure to read before handling. Refer to main text for detailed precautions on every series. Operating Environment Maintenance Warning Warning 1. Perform maintenance inspection 1. Do not use in an atmosphere having corrosive...
VQC4000 Series Specific Product Precautions 1 Be sure to read before handling. Refer to main text for detailed precautions on every series. Continuous Duty Valve Mounting After confirming that the gasket is installed correctly, When the product is continuously energized for a long...
Page 11
VQC4000 Series Specific Product Precautions 2 Be sure to read before handling. Refer to main text for detailed precautions on every series. Installation and Removal of Light Cover Internal Wiring Specifications • Removal Open the cover by inserting a small flat head screwdriver into the slot on the side of the pilot assembly (see drawing below), lift the cover out about 1 mm and then pull off.
When the valve is failing, use this flow chart to Trouble clarify the cause of the failure and take Possible cause Countermeasures countermeasures appropriate for the cause. • Replace with new valve. 1) Sliding failure or stick of • Clean the supplied air. Can manual main valve.
Page 21
When the valve is failing, use this flow chart to Trouble clarify the cause of the failure and take Possible cause Countermeasures countermeasures appropriate for the cause. 1-1) Looseness of clamp screw Give more torque to clamp screw. ・VQC4000 : 0.8~1.2N・m or mounting bolt.
Need help?
Do you have a question about the VQC4000 Series and is the answer not in the manual?
Questions and answers