It is forbidden to apply directional spool valve if valve if the plug the plug the plug-in-connector connector connector is not pr is not pr is not properly tightened to the solenoid socket and is not tightened to the solenoid socket and is not secured by screwing bolt secured by screwing bolt tightly. 5. Due to heating solenoid coils, directional spool valves should be spool valves should be valves should be placed in order placed in order placed in order to eliminate the possibility of incidental touch eliminate the possibility of incidental touch while using, or, they should be equipped with the coil covers (in accordance with the coil covers in accordance in accordancewiththe European standards European standards standards PN - EN ISO 13732-1 andPN-EN 982
