Datasheet Content
[{"filename":"AT2_EN_Ed17_April-2024.pdf","text":"PUMP TYPE AT2\n\nThis is a general specification leaflet; for specific applications not covered herein,\n AT2\n AT2 - 11 - Ed 17 - April 2024\ncontact Suntec.\n PUMP\nThe SUNTEC AT2 oil pump features 2 mode pressure operation and incorporates IDENTIFICATION\na blocking solenoid valve with in-line cut-off function. Switching between low and (Not all model combinations are available\nhigh modes is assured by a 2nd integral solenoid valve. Consult your Suntec representative)\n AT : Pump for two mode operation\nCOMPATIBILITY (one nozzle line and two pressure modes)\n with integral in-line solenoid cut-off\n- Domestic oil, HVO, B100 (biofuel blend with the addition up to 100% FAME, as\n 2 : Standard model\ndefined in DIN SPEC 51603-6 and EN 14214), kerosene.\n V : B100 application\n- One or two-pipe system.\n Gear set capacity\nPUMP OPERATING PRINCIPLE (see pump capacity curves)\n Shaft rotation\nThe gear set draws oil from the tank through the built-in filter and transfers it to the and nozzle location\nnozzle line via the cut-off solenoid valve. Pressure regulation is assured by two (seen from shaft end)\n A : clockwise rotation\nspool valves, one for each pressure mode. right hand nozzle.\nSwitching between low and high pressure is assured by a \"normally open\" by-pass B : clockwise rotation\n left hand nozzle.\nsolenoid valve. When this solenoid is non-activated, a by-pass channel is open, C : anti clockwise rotation\nallowing the normal functioning of the low pressure regulating valve which sets the left hand nozzle.\nnozzle pressure. When this solenoid is activated, the by-pass channel is closed, thus D : anti clockwise rotation\n right hand nozzle.\npressure will build up on both sides of the low pressure regulating valve eliminating its\n K : Kerosene applications\neffect, and the high pressure regulating valve now determines the nozzle pressure.\n Pump series\nThe blocking solenoid valve of the nozzle line is of the \"normally closed\" type.\n 5/6 : hub Ø 32 mm\nThis design ensures extremely fast response and the switching can be selected\naccording to the burner operating sequence and is independent of motor speed. Model number\nWhen this solenoid valve is non-activated, the valve is closed and all oil pressurized by\n AT 2 V 45 C K 9 5 xx 4 P 07 00\nthe gear set passes through the regulators to suction or to the return line, depending\nupon pipe arrangement. Revision number\nAs soon as this solenoid is activated, oil passes to the nozzle line at the pressure\nset by the pressure regulating valves. Installation\n P : by-pass plug installed in return port\nIn two pipe operation, the by-pass plug must be fitted in the return port, which ensures for two-pipe operation\nthat the oil dumped by the regulating valves is returned to the tank and the suction\nline flow is equal to the gear set capacity. Solenoid coil voltage\n 05/07 : 220 - 240 V AC ; 50/60 Hz\nBleeding in two pipe operation is automatic (it is assured by a bleed flat on the piston 06 : 110 - 120 V AC ; 50/60 Hz\nof the low pressure regulator), but it may be accelerated by opening a pressure port. 02 : 24 V AC ; 50/60 Hz\nIn one pipe operation, the by-pass plug must be removed, and the return plugged.\n Connector cable length\nOil which is not required at the nozzle is returned directly to the gear inlet via the 00 : no cable\npressure regulating valves, and the suction line flow is equal to the nozzle flow. 35 : 35 cm - 45 : 45 cm\nA pressure port must be opened to bleed the system. 60 : 60 cm - 10 : 1 m\n\n\n\n Blocking Blocking\n By-pass By-pass solenoid valve solenoid valve\n solenoid valve solenoid valve (NC) (NC) closed\n (NO) (NO) open\n closed open Pressure\n gauge port\n Low pressure\n to nozzle\n adjustment\n\n Shaft seal\n\n Back to\n High pressure Pressure outlet suction\n adjustment Gear set or pressure\n gauge port\n Oil under suction\n\n Vacuum\n Oil under pressure gauge port\n By-pass\n By-passed oil By-pass plug\n returned to tank, plug removed\n or to suction TWO PIPE ONE PIPE\n inserted Return\n INSTALLATION Inlet Return INSTALLATION plugged\n\n\n SUNTEC INDUSTRIES FRANCE - 1, rue Lavoisier - CS 60 102 - F-21603 LONGVIC Cedex - www.suntec.fr\n\f TECHNICAL DATA\n Pump capacity\n General\n Capacity (L/h)\n Mounting Hub mounting according to EN 225.\n Connection threads cylindrical according to ISO 228/1\n Inlet and return G 1/4\n (with facilities for conical sealing on revision 6 models)\n Nozzle outlet G 1/8\n Pressure gauge port G 1/8\n Vacuum gauge port G 1/8\n Valve function Pressure regulation.\n Strainer open area : 6 cm2 (AT2 20,45/45K, 55/55K, 65/65K)\n 20 cm2 (AT2 75/75K, 95/95K)\n opening size : 150 µm\n Shaft Ø 8 mm according to EN 225.\n By-pass plug inserted in return port for two-pipe system ;\n to be removed from return port with a 4 mm Allen\n Pressure (bars)\n key for one pipe system.\n Weight 1,3 kg.\n Viscosity = 5 cSt - Rated speed = 2850 rpm\n Hydraulic Data 1,8 cSt\n\n Gear size 45K/55K/65K/75K/95K 20/45/55/65/75/95\n Nozzle pressure range* @ 1,8 cSt…
