U214-A TV

U214-A TV

Exploded drawing of double flux solenoid valve From above diagrams, it is known that this kind of solenoid valve consists mainly of valve body, membrane, cone-shaped spring, valve cover, pilot valve, control valve of small flux, reposition valve, winding of pilot valve and small flux valve winding. The working principle of double flux solenoid valve can be leaned from Di fuel dispenser agram 2-35. Pilot valve, small flux valve and m fuel dispenser ain valve controlled by membrane are closed after power cut, no oil pass solenoid valve. When both two windings are open, pilot valve and small flux valve switch on, pressured oil pushing down membrane. Part of oil in A chamber flow toward outlet of solenoid valve via pilot valve and small flux valve, main valve is switched on after overcoming spring, at this state, solenoid valve is in large flux. When winding of pilot valve is cut power, pilot valve is closed, membrane go upward so as to close main valve due to oil press fuel dispenser ure increase in A chamber. Solenoid valve is in small flux state. If the power of winding of small flux valve is cut off, small flux valve is closed, no flux in solenoid valve. It is learned from above introduction that the large and small flux of solenoid valve are controlled by pilot valve and small flux valve. This is why it called double flux solenoid valve. As filing motor, pilot valve, small flux valve and main valve are switched on, fuel dispenser work in large flux state. When filling volume nearly reach presetting value, winding power of pilot valve is cut off, main valve is closed. However, small flux valve is still working. When filling volume reach preset-value, the winding power of small flux valve is cut off, solenoid valve is closed. Filling operation is end. Troubleshooting In filing operation some troubles maybe correlate to solenoid valve, some maybe to other hydraulic components. Small flux or no delivery in fuel dispenser, for example, it is possible caused by solenoid valve or other components. Therefore, it is need to give concrete analysis and diagno

ctrical systems i EN 50039 A A A　　 General requirements for Category 1 EN 50284 A　　 equipment　　 General requirements EN fuel dispenser 50014 A A A　　 fuel dispenser A = allowed　　 48　　　　　　 Annex ZA　　 (informative)　　 Clauses of this European Standard addressing essential requirements or　　 other provisions of EU Directives　　 This European Standard has been prepared under a mandate given fuel dispenser to CEN by the European Commission and the　　 European Free Trade Association and supports essential requirements of EU Directive.　　 The following clauses of this standard are likely to support requirements of Directive:　　 rd　　 Directive 949EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws　　 of the Member States concerning equipment and protective equipment intended for use in potentially explosive　　 atmospheres.　　 Compliance with the clauses of this standard provides one means of conforming with the specific essential　　 requirements of the Directive concerned and associated EFTA regulations.　　 WARNING : Other requirements and other EU Directives may be applicable to the products falling within the scope　　 of this standard.　

The industry has resisted attempts at regulation in the past. When the idea of including aviation in the European Emissions Trading Scheme was first mooted, they swiftly mounted a campaign to argue that regulation was unnecessary. Snazzy new technologies and a desire to cut fuel costs would improve efficiency without government intervention, they claimed. In light of fuel dispenser existing pledges by airline bosses to improve t fuel dispenser he fuel efficiency of new aircraft by 50% over the two decades to 2020, Sir Richard s call for a 25% reduction looks neither ambitious nor particularly original. But his foray into green energy may be more determined, especially when set against commitments by larger firms such as BP and GE. This week Neste Oil, a Finnish energy company, said it would spend “several billion euros�on biofuels, illustrating what a booming industry alternative energy is becoming. And any breakthrough in biofuels would fit well with Sir fuel dispenser Richard s existing investments in transport. His ideas might not be ground-breaking, but they could well prove money-making. © 2006 .  About sponsorship Age-discrimination legislation Hire the aged Sep 28th 2006 From The Economist print edition New laws to regulate Britain s growing army of old workers SWEEPING age-discrimination laws will take effect on October 1st, with British companies in various states of readiness. The regulations outlaw discrimination against most workers under the age of 65. Those who are kept on beyond that age must be given six months notice of any attempt to “retire� them, lest it be used as a cover for sacking. The employee may appeal against the employer s decision. Small firms are nervous. A recent poll of Business Link, which counsels small businesses, revealed that 90% of their advisers reckon small companies are unprepared. Their lack of specialist staff makes it harder for small firms to decipher the new rules, complains Si