PART II: INSTALLATION
17
About the use of fuel pumps
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Do not use fuel with additives to avoid the possible formation over time of compounds which may deposit between the gear teeth,
thus obstructing them.
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After filling the tank, wait before starting the burner. This will give any suspended impurities time to deposit on the bottom of the
tank, thus avoiding the possibility that they might be sucked into the pump.
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On initial commissioning a "dry" operation is foreseen for a considerable length of time (for example, when there is a long suction
line to bleed). To avoid damages inject some lubrication oil into the vacuum inlet.
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Care must be taken when installing the pump not to force the pump shaft along its axis or laterally to avoid excessive wear on the
joint, noise and overloading the gears.
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Pipes should not contain air pockets. Rapid attachment joint should therefore be avoided and threaded or mechanical seal jun-
ctions preferred. Junction threads, elbow joints and couplings should be sealed with removable sg component. The number of jun-
ctions should be kept to a minimum as they are a possible source of leakage.
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Do not use PTFE tape on the suction and return line pipes to avoid the possibility that particles enter circulation. These could depo-
sit on the pump filter or the nozzle, reducing efficiency. Always use O-Rings or mechanical seal (copper or aluminium gaskets) jun-
ctions if possible.
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An external filter should always be installed in the suction line upstream the fuel unit.
Key
1. Pressure governor
2. Pump pressure gauge
3. Vacuum gauge
5. To the nozzle
7. Inlet
8. Return
Key
1 Pressure governor
2 Pressure gauge
3 Vacuum gauge
5 Nozzle
7 Suction
8 Return
Suntec E6 - E7 1001
Oil viscosity
3 - 75 cSt
Oil temperature
0 - 90°C
Inlet maximum pressure
1,5 bar
Maximum return pressure
1,5 bar
Minimum inlet pressure
- 0,45 to avoid gasing
Rotation speed
3600 rpm max.
Suntec J6 - J7
Oil viscosity
2.8 - 200 cSt
Oil temperature
0 - 90°C
Min. suction pressure
- 0,45 barto avoid gasing
Max. suction pressure
1.5 bar
Max. return pressure
1.5 bar
Rotation speed
3600 rpm max.
