regulating piston forward until it
seals in port "P". This cuts off the oil
low to the nozzle and ensures that
the nozzle line is effectively shut off.
If the pump is overloaded, i.e. more oil
is demanded than the gearwheel is
able to pump under the given condi-
tions, the oil pressure falls below the
set value because the piston of the
regulating valve moves towards its
closed position and partially or wholly
cuts off the return oil via port "O".
Two pipe system
Mounting/dismounting by-pass plug
In a 2-pipe-system excess oil is
led back direct to the oil tank. In a
1-pipe-system the by-pass plug
must be removed so that there is
a free passage back to the suction
side through the return line with the
return port closed.
Exchange of ilter
One pipe system
Function DANFOSS RSA 95 - 125
When the pump is started oil is
drawn through the suction port "S"
via ilter "H" to the suction side of the
gearwheel set "C". From here the
gearwheel set pumps the oil to the
pressure side and at the same time
the oil becomes pressurized. The oil
is led to cut-off and regulating valve
"V" which opens when the set pressure
is reached.
The pressure is controlled and kept
constant by regulating valve "V". At
the same time the gearwheel set
"C" distributes the oil through nozzle
port "P" and pump return side "R"
via the shaft seal "F".
The quantity of oil supplied to nozzle
port "P" is determined by the pressure
set on regulating valve "V" and the
nozzle/resistance in the nozzle line.
In 2-pipe-systems excess oil is led
back to the oil tank. In 1-pipe-systems
the by-pass plug "A" must be removed
to give free low back to the suction
side via return line "G" with return port
"R" closed.
When the pump is stopped, the
pump output drops and produces a
drop in the oil pressure. The spring
in the regulating valve presses the
171 505 39 10-01
This can be remedied by
-
reducing the pump pressure
-
reducing the capacity, i.e. smaller
nozzle or greater resistance
-
changing to a pump with higher
capacity
INSTRUCTIONS PUMP TYPE DANFOSS RSA 95-125
R
S
Summary of Contents for Bentone B70-2.3H
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