44
Bentone B40 MF/B45-2 MF
For installers
5. Inlet
Vacuum gauge port
7. To nozzle
8. Return
6. Pressure adjustment
Oil under suction
Oil under pressure
By passed oil returned to tank, or to suction
4. By-pass plug installed
3. Pressure gauge port
2. By-pass hole
1. Gear set
7.5 Function
The pump gear (1) draws oil through the pump suction port (5) from the tank
through the filter in the pump and transports the oil to the valve (6) which
controls the oil pressure to the nozzle. Oil that does not go through the outlet
(7) to the nozzle will be bypassed (2) through the valve (6) back to the return
port (8) on the pump.
7.6 Preheating pump
The pump has the facility to fit an immersion heater to providing preheating.
The pump should be equipped with an immersion heater in order to facilitate
cold starting and operation where oils of a higher viscosity are used. The
burner is of a standard design and equipped with an immersion heater to
preheat the pump.
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