User manual HONEYWELL TGK

[. . . ] magnetic coils (solenoids) can reach operating temperatures of up to 85 °C (185 °F). Further, due to thermal seepage, lime scale may form at the valve tappet (especially when the medium is tap water). In order to ensure the free transference of heat to the surroundings, magnetic solenoids must not be painted. [. . . ] Freezing lf the Solenoid valve is to be used in an ambient temperature or with a medium temperature of O°C or lower, or if such circumstances cannot be completely excluded, it is necessary to mount the valve so that it cannot be frozen (e. Starting-up On first use of the Solenoid valve, make sure that the medium in the line is completely throttled by another valve upstream of the Solenoid valve. Open this controlling valve slowly so as to gradually expose the Solenoid valve to the full line pressure. In this way any air trapped in the Solenoid valve can leak away. A sudden impact of the full line pressure on the Solenoid valve on the first occasion of use, may cause an uncontrolled opening of the valve. Back Pressure lf back pressure at the output side of the valve is 0. 6 bar above the inlet pressure, the piston will be lifted from its seat and the medium will flow back through the valve. Maintenance To prevent possible jamming of the piston, the valve should be operated 5 to 10 times per month. Apart from this no other maintenance is required. Painting the Solenoid The Solenoid must not be painted otherwise the cooling will be affected. filter Trouble-free function of the valve will be hindered if dirt (weld particles , rust flakes , scale) prevents the valve from sealing tight. Lt is therefore recommended to provide a filter for each valve. The Type number of the magnet system forms part of the complete valve part number. example: T40G31 F Protection IP 65 to DIN 40 050 fr = suitable for outdoor use. Power Requirement 50 VA with the magnet warmed Duty Cycle 100 % The AC current is connected to two terminals on a board in the plug. The earth lead is taken directly to a nut (located beneath the circuit board) see diagramm. [. . . ] The condition of the Solenoid and rectifier can simply be checked via resistance current and voltage measurements. For Solenoids of the series G31 and G35-Ex must have the following values for trouble free operation: All values are on the DC side and therefore measured after the plug included rectifier and are given for a solenoid temperature of 20 °C. Lf the measured values deviate considerably from those of the table there must be a fault in the solenoid. [. . . ]