Unigas RG1025, Manual Of Installation, Use And Maintenance

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C.I.B. UNIGAS - M039144CD
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Hydraulic diagrams for light oil supplying circuits
NOTE: in plants where gravity or ring feed systems are provided, install an automatic interception device (see n. 4 - Fig. 5)
Pump operating principle
The pumps that are used can be installed both into single-pipe and double-pipe systems.
Single-pipe system: a single pipe drives the oil from the tank to the pump’s inlet. Then, from the pump, the pressurised oil is driven to
the nozzle: a part comes out from the nozzle while the othe part goes back to the pump. In this system, the by-pass pulg, if provided,
must be removed and the optional return port, on the pump’s body, must be sealed by steel plug and washer.
Double-pipe system: as for the single pipe system, a pipe that connects the tank to the pump’s inlet is used besides another pipe that
connects the pum’s return port to the tank, as well. The excess of oil goes back to the tank: this installation can be considered self-ble-
eding. If provided, the inside by-pass plug must be installed to avoid air and fuel passing through the pump.
Burners come out from the factory provided for double-stage systems. They can be suited for single-pipe system (recommended in the
case of gravity feed) as decribed before.To change from a 1-pipe system to a 2-pipe-system, insert the by-pass plug
G (as for ccw-rota-
Fig. 6 - Gravity circuit
Fig. 7 - Ring circuit
Fig. 8 - Suction circuit
Key
1 Manual valve
2 Light oil filter
3 Light oil feeding pump
4 One way valve
5 Flexible hoses
6 Relief valve