I
NSTALLATION
,
USE AND MAINTENANCE MANUAL
–
PN130-140-155-155R
R
EV
.
07
23-04-2015
13 / 36
Jurop
SpA
Via Crosera n° 50
33082 Azzano Decimo, PN (Italia)
T
EL
.
+39
0434
636811
F
AX
.
+39
0434
636812
http://www.jurop.it
e-mail: [email protected]
5
4
6
1
3
P
A
B
OUT
IN
DRAINING LINE
5
4
6
3
2
1
C) Hydraulic drive
Motor features for pump PN130 - PN140
Displacement
Max. operating
pressure
Max pressure
draining line
Max. press.
motor exhaust
72 cc/rev
235 bar
5 bar
5bar
Motor features for pump PN155
Displacement
Max. operating
pressure
Max pressure
draining line
Max. press.
motor exhaust
86 cc/rev
220 bar
5 bar
5bar
•
Fluid
: mineral oil for hydraulic systems in compliance with
ISO/DIN.
Temperature
Optimum viscosity ale
Max. viscosity allowed
-20 / +80 °C
12 – 100 cSt
750 cSt
•
Filtration
: class 19/16 contamination according to ISO 4406 to be
obtained with a ßx = 75 filter.
•
Check circuit connections
: they must be applied in the same
rotation direction as that indicated by the arrow on the pump front
flange.
Fig. 4.3
•
Draining
: connect directly to the tank above the maximum oil
level. Operating without draining line may damage the motor.
1
Hdr pump
4
Oil filter
2
Distributor
5 *
Heat exchanger
3
Hdr motor
6 *
Safety valve
* optional components
Fig. 4.4
•
Distributor
: open-centre distributor in central idle position
(vacuum pump off). It must be equipped with an adjustable
overpressure safety valve.
•
Motor pipeline
: outlet pipe must not be of a smaller diameter than
that of the inlet port. Inlet pipes always have a diameter smaller than
outlet pipes. Choose preferably flexible pipes to avoid vibration
transmission.
•
Tank
: with suction pipe and return separated by baffles. If
necessary, use a heat exchanger to avoid oil heating above 70-80°C
and protect it from extreme pressure with a pressure relief valve.
Minimum approximate capacity: as twice as the circulation flow.
•
Starting-up
: be sure that the system is well cleaned and pour oil
into the tank and into the motor housing (necessary to lubricate the
internal bearings).
• Vent the circuit and adjust the overpressure safety valve to the
lowest possible value.
• Check the oil tank level.
• Increase pressure and rotation speed until operating values are
reached.
5.1.
Starting-up of the pump
• Check oil levels in gearbox and side mounted tank.
• Check that all protection devices are correctly installed.
• Check that there are no obstacles in the vacuum line.
• Check rotation direction: open all system valves and start running
slowly.
Do not rotate in the wrong direction: this may
damage the vacuum pump. Follow the arrow
indicated on the front flange.
• Check which position of the four-way integrated valve lever allows
vacuum or pressure functioning.
• Close the valve and increase vacuum rate (or operating pressure
)
.
• Check that the lubricating pump works properly. Oil must regularly
drip into the oilers. Typically (with degree of vacuum > 50%) about
40
drops/min
(at maximum speed).
• Check loading and operating speed for vibrations or unusual
noises.
This vacuum pump is designed to work at
maximum speed, but for longer operating we
recommend the pump be run at working speed
(see
par.
2.3).
Adequately
prepare
the
transmission
• Prepare adequately transmission.
5. Start up
