Delta Pump VM4 LL 2.4

Oil burners fuel unit with solenoid valve VM1 - VM4U flanged Printed in Italy - DE101/0102                                   The DELTA fuel unit is an efficient modern oil burner pump with compact design and since its mounting flange, hub and shaft sizes are manufactured to international standards (DIN 24220, EN 225), it can be 10 fitted to every oil burner. Features 1 High suction capability.   Suitable for one or two pipe systems. 9 Self priming.  2  Reliable pressure and positive cut-off. 8 Solenoid valve incorporated.  Special shaft seal.   Silent operation. 7 Low power absorption. 3  Easily installed and adjusted.  4 Pressure and vacuum gauge ports. Applications 5 6 The DELTA fuel unit type VM is designed for pumping oil in high pressure oil burners and transfer pump applications. From the suction side, the gears pass the oil to the WARNING pressure chamber, where it comes up against the head of the piston. Due to the build up of pressure, the piston It must not be used to pump water or acid. is forced back against the pressure regulating spring. The flow of pressurized oil is interrupted by an incorporated solenoid valve (10), and can, therefore, be Operation opened following the start of the motor (pre-purge), or interrupted before stopping the motor itself (instant shut- The VM fuel unit consists of a pump, solenoid valve, off of the flame preventing the nozzle dripping). The filter and pressure regulator valve housed within one excessive oil discharges to the return side (or by-passes casting. The pumping action is obtained from two spur in the one pipe version). It will be realized of course that gears (2), one of which is connected to the drive shaft the spring tension, which is varied by the regulator screw (3). The pump casting provides the various oil ways, for (1), regulates the pressure of oil required. the suction (6), return (5) and nozzle (9) ports. Pressure The pump can be converted from the single pipe version (8) and vacuum (7) gauge ports are also provided. to the two pipe version, fitting the by-pass plug (4) in the The VM unit is available in two pipe and one pipe return port. version. Both versions are self priming. On start up, the rotating gears purge the air from the suction chamber, through a vent groove in the piston to the return line in two pipe version, and through the nozzle line (after the solenoid valve opening) in one pipe version. On initial commissioning, it is possible to bleed the air more quickly, through the pressure gauge. Because a vacuum now exists oil, due to atmospheric pressure, enters the suction chamber through the filter. Printed in Italy - DE102/0102 Pump identification VM 1 R L 2 4 P F Pump type Nozzle capacity (see graphs) Rotation (seen from shaft end) R = clockwise L = counter clockwise Nozzle line (seen from cover) R = right L = left Pipes system 1 = one pipe 2 = two pipes Pressure ranges Factory setting 3 = 2 ÷ 10 bar 4 ±0,3 bar 4 = 4 ÷ 15 bar 10 ±0,3 bar 5 = 8 ÷ 20 bar 15 ±0,3 bar 6 = 10 ÷ 25 bar 20 ±0,3 bar Special versions U = cover type U with filter inox 65 cm² mesh 110µ without pressure and vacuum gauge L = cover type L with filter nylon 9 cm² mesh 150µ (only VM1) P = auxiliary pressure port K = nozzle port type K (4mm shorter) Coil type F = F84 coil with connector plug M = M8 coil with flexible metal conduit Technical specifications Oil viscosity ………………………………… 2 ÷ 50 cSt Oil temperature …………………………….. 60° C max Power consumption ………………………. See graphs Nozzle capacity …………………………….. See graphs Suction line vacuum ………………………. 0,5 bar max Suction line pressure ……………….…….. 0,7 bar max Return line pressure ……………………….1,5 bar max Rotation speed ……………………….……. 3500 rpm max Standard filter ……………………………… Nylon, mesh 150µ, 20cm² Dimensions …………………………………. Hub ø32, shaft ø8 (DIN 24220) Optional : flange hub ø54, shaft da 7/16” Connections ………………………………... Inlet – return : G ¼” Nozzle port : G1/8” Pressure – vacuum gauge : G1/8” Weight ……………………………………….. gr. 1100 Coil specifications ………………………… F84 380V 50-60Hz 230V 50-60Hz M8 230V 50-60Hz L=700mm 110V 50-60Hz 24V 50-60Hz 230V 50-60Hz L=260mm 24V 95Hz 24V DC 110V 60Hz L=700mm 12V DC 24V 50Hz L=300mm L=300mm L=400mm 24V 50Hz L=700mm L=500mm L=700mm 24V 50Hz L=700mm L=1000mm L=1600mm 24V DC L=700mm Printed in Italy - DE103/0102  Nozzle capacity Power consumption Visc. 5 cSt (1.4° E) L/h 2800 RPM 125 Visc. 5 cSt (1.4° E) Watts 2800 RPM 100 200 VM4 75 VM4 150 VM3 VM3 50 100 VM2 VM2 VM1 25 50 VM1 5 10 15 20 25 Bar 5 10 15 20 25 Bar 88 ÷ 98 DELTA 10 Cod. F84 230V/50-60Hz 11VA s.c. 102 14…