jurop LC 300 Operation instructions

I
I
N
NS ST TA AL LL LA AT TI IO ON N
,
,
U US SE E A AN ND D
M
MA AI IN NT TE EN NA AN NC CE E M MA AN NU UA AL L
Rev. 0
4
27-04-2012
EN LC 300 – LC 420
O
O
R
RI IG GI IN NA AL L I IN NS ST TR RU UC CT TI IO ON NS S

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INDEX
1. CONSTRUCTION FEATURES ...................................................................................................... p. 3
2. TECHNICAL DATA ........................................................................................................................ p. 4
Dimensions
Legend of lubrication and vanes wear check-points
Weight
Normal use of the pump
Usage limitations
erformances
Flow - ower
Sound pressure level
3. SAFETY AND ACCIDENTS PREVENTION .................................................................................. p. 9
4. INSTALLATION ........................................................................................................................... p. 10
Legend of main components
ump mounting
Vacuum - pressure line
Cooling system
5. DRIVE ........................................................................................................................................... p. 12
Cardan shaft drive
Belt drive
Hydraulic drive
6. START-UP.................................................................................................................................... p. 14
7. OPERATING PRECAUTIONS .................................................................................................... p. 15
8. ORDINARY AINTENANCE....................................................................................................... p. 16
Checking the drip oilers
Checking the side mounted tank oil level
Checking the vanes wear
Checking the gear box oil level
9. EXTRAORDINARY AINTENANCE........................................................................................... p. 18
Adjusting the 4-way valve
Replacing the vanes
Adjusting the self-lubricating pump
Replacing the gear box components
10. TROUBLESHOOTING .............................................................................................................. p. 20
11. SCRAPPING .............................................................................................................................. p. 21
12. SPARE PARTS .......................................................................................................................... p. 21
12.1 Spare parts LC 300-420 D
12.2 Spare parts LC 300-420 M540-M1000-HDR
12.3 Accessories LC 300-420

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• Four-vane rotary pump with liquid cooled housing, suitable even for major duty operating
conditions with high volumetric efficiency and low noise. It has two inlet liquid points on the
lower part of its body and four outlet points on the upper part. They do not interfere with the
side mounted oil tank.
• Automatic lubricating pump, accessible from the outside for an easy and quick adjusting.
Copper oil piping, complete with sight glass drip oilers for a continuous check of the
lubrication system.
• Side mounted oil tank with level spy hole. The oil tank can be mounted either on the right
or left side of the pump to grant an easy oil checking and filling up. The outside mounting
of the oil tank grants a better cooling of the oil itself.
• Heavy duty vanes (asbestos free), radially disposed on the rotor: reduced wear for a long-
lasting lifetime. Vanes wear checking ports on the pump body: they do not interfere with the
side mounted oil tank.
• Built-in vacuum-pressure changeover 4-way valve, manually operated: on request,
hydraulic or pneumatic operated actuators available.
• Non return valve (rubber ball) integrated in the pump manifold
• Swivelling conveyors, made of aluminium alloy: various sizes available.
• Cooling water temperature: a mechanic thermometer can be inserted into one of the outlet
holes. A metal capillary operates the pointer that can be mounted on a visible point near the
pump. Delivered on request. Exhaust air temperature: the manifold is equipped
with a housing for the safety thermostat (intervention temperature: 150° C). Delivered on
request.
• Built-in suction air filter. It can be mounted horizontally whereas the suction hole can be
swivelled either towards the right or the left side, for an easy pump installation and the
following cleaning operations and maintenances. The space required to remove the inner
cartridge of the suction filter do not exceed the overall dimensions of the pump. Cleansing
agents suction points for the internal wash-up of the pump (recommended in case sewage
has been sucked).
• Drive system:
• Direct with smooth shaft
• With gear box (ASAE 1 3/8) 540 rpm o 1000 rpm, left rotation
• With hydraulic motor
1. CONSTRUCTION FEATURES

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LC420 M – SX
LC300 M – SX
NOTE
The position of the tank depends on the
rotation direction of the pump. The
illustration shows the standard position. On
request, the pumps are delivered with the
tank mounted on the opposite side.
2. TECHNICAL DATA
DIMENSIONS [mm]

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LC420 HDR – SX
LC300 HDR – SX
LC420 DIR – SX

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LC300 DIR – SX
LC420 D USA – SX [all dimensions in inches]
LC300 D USA – SX [all dimensions in inches]

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PU P LUBRICATION HOUSING GEARBOX
LS:
Tank level
CS:
Tank filling
point
OL:
Oilers
CL : Vanes wear
checking
L :
Oil level
S :
Outlet plug
C :
Inlet plug
odel LC300 D LC300 LC300 HDR LC420 D LC420 LC420 HDR
Weight (kg) 195 200 205 210 215 220
The LC pumps are designed to convey filtered air into plants for vacuum production or for the suction
of powders or liquid wastes. Do not sack toxic substances and inflammable or explosive gasses since
the internal components of the pump may reach high temperatures.
Liquids or solids infiltrations can seriously damage the pump.
AX. SPEED – OPERATING SPEED P
2
(ABS bar)
T
2
(°C)
T
2
- T
1
(°C)
LC … 540 LC … 1000 LC … DIR LC … HDR ax ax ax
540 - 460 1000 - 850 1300 - 1100 1300 - 1100 2.0 150°C 130°C
1
: absolute pressure during suction T
1
: temperature during suction
2
: absolute pressure during delivery T
2
: temperature during delivery
LEGEND OF LUBRICATION AND VANES WEAR CHECK-POINTS
WEIGHT
NORMAL USE OF THE PUMP
USAGE LIMITATIONS

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LC300 LC420
Air flow under free air condition l/min
m
3
/h
8500
510
12000
720
Air flow 60% vacuum rate l/min
m
3
/h
6415
385
9000
540
Air flow 80% vacuum rate l/min
m
3
/h
3450
207
4833
290
Max. vacuum at continuous duty (*) % 80
Max. vacuum % 92
ower required at max. vacuum kW 14 18
ower required at 0.5 relative bar (1.5 abs.) kW 12 16
ower required at 1.0 relative bar (2.0 abs.) kW 17 24
Max. relative pressure (abs.) bar 1 (2,0)
Air flow at 0.5 relative bar (1.5 abs.) l/min
m
3
/h
7500
454
10830
650
Air flow at 1.0 relative bar (2,0 abs.) l/min
m
3
/h
7000
420
9830
590
Oil consumption g/h 200 220
Oil tank capacity litres 4
Circulating pump speed rpm 2700
Circulating flow rate l/min 55
Heat exchange rate Kcal/h 6000 8000
Mass moment of inertia Kgm2 0.15 0.21
(*): at nominal speed and room temperature of 20° C.
ressure operation: free inlet
Vacuum operation: free outlet
Free
port Vacuum Pressure
0% 20% 40% 60% 70% 80% 90% 1.4 bar 1.8 bar 2.0 bar
LC 420
m
3
/h
l/min
kW
720
12000
11
670
11170
12
620
10330
14
540
9000
15
400
6670
16
290
4833
16,5
16
270
17
650
10830
16
610
10170
21
590
9830
24
LC 300
m
3
/h
l/min
kW
510
8500
8
480
8000
9
444
7400
10
385
6420
11
285
4760
12
207
3450
13
10
190
14
460
7660
11
435
7250
15
420
7000
17
Room condition: = 1013 mbar, T = 20° C Vacuum pump at max. speed.
Conveyed fluid: air density 1.2 kg/m
3.
PERFORMANCES
FLOW - POWER

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LC300 LC420
Max. speed, 60% vacuum rate 70 db(A) 73 db(A)
Max. speed, 90% vacuum rate 73 db(A) 75 db(A)
(*): Noise of pump + exhaust silencer 15470D2CB0.
Distance: 7m in open field.
CAREFULLY OBSERVE THE FOLLOWING RULES
• When transporting the pump, use proper slinging. Store the pump in stable places.
• Installation and maintenance must be operated only by qualified personnel wearing the proper clothes
and the necessary tools as well as protection devices.
• Before each maintenance operation:
• Stop the pump and restore the atmospheric pressure.
• Disengage the drive system.
• Only operate after the pump has cooled down.
• When the pump is running, some parts may reach very high temperatures (above 100°C). Use all
necessary precautions to avoid contact.
• Operators working nearby must avoid prolonged exposure to the noise emitted by the aspirator, if not
equipped with the proper ear-protection devices.
• Avoid accidental suction of solids: solids may be projected at high speed through the exhaust manifold
and injure the operators.
• Do not start the machine if the protection devices provided for transmissions are removed. Replace
damaged parts.
• ressure relief valve: point the air flux away from the operators.
• Do not use the aspirator over its design limits: the machine may be damage and the operator may be
injured.
Dispose of exhausted oil (accumulated in the silencer’s separator at the exhaust) and the oil used in
the vacuum pump maintenance (internal wash-up or periodical replacement in the gear box) as
provided by current specifications.
SOUND PRESSURE LEVEL
3.
SAFETY AND ACCIDENTS PREVENTION

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1. Water recycle pump
2. Venting valve on pump housing
3. Venting valve on water recycle
pump
4. Cooling water inlet
5. Cooling water outlet
6. Vanes check-port
7. Oil filling port
8. Lubricating oil tank
9. Check valve
10. Oil tank emptying port
11. Oilers
12. Self-lubricating pump
13. Vacuum – pressure change
valve
• The mounted aspirator must be accessible for maintenance and firmly fixed on a frame or angled base
with a 3° max inclination on x and y axes (see picture above). The structure must be fit to avoid
flexions or vibrations.
• Make sure that there is enough free room around the pump for a correct air cooling circulation and
protect the pump from the exposure to dirt and debris.
• repare the necessary space for an easy access to the lubrication check-points (tank level and gear
box, oilers) and to the oil tank filling port, the four-way manifold handle, and the vane wear inspection
ports.
• To avoid accidental suction of liquids inside the pump, install a primary (pos. 1) and a secondary flow
shutoffs (pos. 2). If necessary, install also a suction filter (pos. 4) to protect from solids infiltration.
• The exhaust silencer (pos. 6) is designed to reduce the noise level and to separate the oil mist coming
out from the pump outlet port. The separator must be periodically drained from oil and condensate
accumulated in the separator during the normal pump functioning.
• The diameter of the vacuum/pressure line pipes must be properly dimensioned to the pump flow and,
in any case, larger than the diameter of the ports.
• The pipes weight must not solicit the body of the pump. Use high temperature resistant rubber
connections.
• Before mounting the vacuum line to the pump, remove the port protections. ipes and all line
components must be clean.
• Avoid restrictions and tight curves as much as possible if not strictly necessary.
• Exhaust pipes can reach high temperatures. Hence, they must be properly isolated.
4.
INSTALLATION
LEGEND OF MAIN COMPONENTS
MOUNTING
VACUUM – PRESSURE LINE

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Pos. Description Pos. Description
1 rimary flow shutoff valve 6 Silencer - oil separator
2 Secondary shutoff 7 Recycle pump
3 Vacuum relief valve* 8 Water – air heat exchanger
4 Suction filter* 9 Expansion tank
5 Over-pressure safety relief valve 10 Exchanger inlet port
• Safety valves:
• Overpressure safety valve (pos. 5): mount it close to the pump. The valve flow must prevent the LC
420 pump from exceeding the absolute pressure of 2.0 bars or the maximum pressure allowed by
the system. Do not apply gate valves on the line.
• Vacuum control valve (pos. 6): install if necessary to limit the vacuum rate of the system.
• It is composed of:
• Centrifugal recycle pump.
• Heat exchanger with electric fans operated by a thermostat.
• Expansion tank.
The heat exchanger must dissipate the heat power indicated in paragraph “ erformances”.
COOLING SYSTEM
VACUUM – PRESSURE
LINE
COOLING SYSTEM

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Chara teristi urve “Flow – Head” of the re y le
pump.
The cooling liquid temperature must not exceed
60° C.
The air flow generated by the exchanger fans
must be kept free of obstacles.
Use telescopic cardan shafts. In order to achieve a uniform
motion of the driven shaft, the following requirements must
be met:
• Equal working angle α and α
1
of both couplings.
• The internal fork joints must be coplanar.
• Both driven and driving shafts must be coplanar.
It is also recommended working with limited articulated joint
angles (max 15°@1000rpm , max 11°@1300rpm) and
disengaging the transmission for those operations requiring
great angles (steering or lifting).
Follow the rotation direction as indicated on the front flange.
Follow the instructions of the cardan shaft’s manufacturer.
Use the cardan protection supplied with the pump.
The pump installation must fulfil the current EC
injury prevention specifications.
5. DRIVE
CARDAN SHAFT DRIVE
BELT DRIVE
3000 N
MAX
35 MAX
KEEP AXELS PARALLEL
ALIGN PULLEY GROVES AND BELTS
CHECK BELT TENSION
Dp= 180 MIN
16

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• Install a suitable pulley on the smooth shaft as close as possible to the pump: max 35 mm.
• Apply an adequate belt tension (see manufacturer’s data). Max 3000N.
• Do not use driven or driving pulleys with a pitch diameter inferior to 180 mm. Small pulleys
require a high belt tension which may cause premature wear to the bearing or transmission
troubleshooting.
Drive min. pulley pitch diam. Belts LC pump max. speed
mm rpm
180 X B x 3 1300
NOTE
A limited speed ratio allows a longer belts life while reducing stress on the shafts. When possible, prefer:
• pulleys with a pitch diameter bigger than the one indicated;
• motors or power take-offs with a speed similar to the one of the pump.
• otor features
Displacement
Operating
pressure
(max. vac.)
Operating
pressure
(1 rel. bar)
Flow (at
1300 rpm)
ax
pressure
draining line
ax. pressure
motor exhaust
ax pressure
odel
cc/rev bar bar l/min bar bar bar
LC300 61 125 150 83 200
LC420 72 135 175 98
5 5
200
• Fluid: mineral oil for hydraulic systems in compliance with ISO/DIN.
Temperature Optimum viscosity ax. viscosity allowed
° C cSt cSt
-20 / +80 12 - 100 750
• Filtration: class 19/16 contamination according to ISO 4406
to be obtained with a ß
x
= 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.
• Draining: connect directly to the tank above the maximum oil
level. Operating without draining line may damage the motor.
HYDRAULIC DRIVE
DRAINING
PORT

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Pos Description
1 Hydraulic pump
2 Distributor
3 Hydraulic motor
4 Oil filter
5 * Heat exchanger
6 * Safety valve
*: optional components
• Distributor: open-centre distributor in central idle position (vacuum pump off). It must be equipped with
an adjustable overpressure safety valve.
• otor 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.
Lubrication.
• Fill in the oil tank to its maximum capacity.
• Check the oil level in the gear box (if the pomp is provided with it)
• In order to choose the most suitable oil, see paragraph “Lubrication”.
Cooling.
• Unscrew the vent valves on the housing and recycling pump, pour the cooling fluid through the port
near the exchanger.
• Screw the vent valves and start running the cooling system in order to expel the air bubbles inside it.
Then, adjust the level by filling up the expansion tank on the exchanger: it must be half filled
(approximately).
• The cooling system we designed has a capacity of 25-30 litres. Use a mixture of demineralised water
and antifreeze liquid at a concentration suitable to room temperature (usually between 25 and 50%).
Carefully vent the cooling circuit with the recycling pump stopped.
6. START
-
UP

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Vacuum line
• Open all valves of the vacuum-pressure system.
• Open all gate valves and remove any possible obstacle from the line.
PRECAUTIONS WHEN STARTING THE SYSTE
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 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. “Usage limitations”). Adequately prepare the
transmission.
• Do not make the vacuum pump overheat: maximum air temperature on exhaust (or delivery) side:
150°C.
• Do not operate it without lubrication: it may cause quick wear and possible breakdown of vanes.
• Do not start running the pump under load: this may damage the drive system or the hydraulic motor.
• Check the rotation speed: it must never exceed the operating limits indicated on the identification plate
of the vacuum pump.
• Do not accidentally operate the pump in the wrong direction: it may break the vanes.
• Do not convey the exceeding delivery outlet towards the suction port, otherwise it will sack warm gas.
• Control the air flow by adjusting the rotation speed: do not use the pressure relief valve to discharge
the exceeding flow.
• Do not point the end of the pump exhaust line through the motor suction in case of truck installation.
• Internal wash-up is necessary after prolonged inactivity, after working in dusty environments or in case
of accidental suction of liquids. Such operation must be carried out only on cooled pumps.
• Disconnect the exhaust silencer, if possible.
• Start running the pump at low speed.
• Suck some water (about 1-2 litres) through the inlet port.
• Then suck oil (about 1 litre) to complete the wash-up and lubricate internal components.
In case the exhaust line cannot be disconnected, drain the liquids accumulated in the separator of
the exhaust silencer.
7. OPERATING PRECAUTIONS
WARNING

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Rotation speed.
Once the needed vacuum rate has been reached, we recommend reducing the vacuum pump
speed to its working speed (see paragraph “Usage limitations”): this allows keeping the achieved
vacuum/pressure rate constant. The pump speed can also be reduced to values lower than the working
speed during the tank discharging phase (with the 4-way valve in pressure mode) without increasing the
draining time. Thus, exhaust temperature is reduced, vane durability is increased and both oil consumption
and power absorption are reduced.
Before starting any maintenance operation, follow the safety prescriptions as described in
paragraph “Safety and accidents prevention”.
Pump operation condition CHECKING FREQUENCY
Lubrication: dripping into oilers D
Rotating speed D
Operating
Working pressure D
Side mounted tank oil level D
Empty the oil gathered in the exhaust silencer. D
Check vanes wear W
Clean filter and vacuum line shutoff W
Check pressure relief valve condition M
Gear box oil level M
Venting of the pump water cooling circuit M
Standstill
Gear box oil change 1500 h
Frequency: D: daily W: weekly : monthly
Check dripping into the oilers.
Be sure it is regular (app. 40 drops/min at max. speed) to grant a correct lubrication of the pump. At lower
speeds, the number of drops must be directly proportional.
If the pump is run without lubrication, the internal components may quickly damaged due to
overheating. Stop the vacuum pump and check the oil level and the lubricating pump.
Do not use the exhausted oil gathered on the bottom of the exhaust silencer again.
Dispose of the oil as provided by current specifications.
8. ORDINARY AINTENANCE
CHECKING THE DRIP OILERS
WARNING

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Do not run the pump with oil level under the minimum level: that may lead to dry functioning and
cause serious damages. Tank capacity: 4 litres. Use pure mineral oil.
Recommended lubricants
Room
temp.
Viscosity ENI ESSO SHELL TOTAL OBIL BP
Below
10°C
ISO
VG 46
Mineral
oil
RADULA
46
NUTO
46
MORLINA
OIL 46
DROSERA
MS 46
NUTO
H 46
BARTRAN
HV 46
Above
10°C
ISO
VG 150
Mineral
oil
RADULA
150
NUTO
150
MORLINA
OIL 150
DROSERA
MS 150
NUTO
H 150
BARTRAN
HV 150
Use SAE 15W-40 mineral oil as an alternative to the lubricants written above.
• Unscrew the vanes wear check-plug (pos. CL) on the housing.
• Turn the shaft until you see the vane.
• The vanes should slide to the bottom of the seat due to
gravity: check they really do.
• Insert a rod of 6 mm Ø with its conic end towards the
pump (rod supplied with pump).
• Turn the shift manually and touch the outside diameter
of the rotor with the checking rod, mark it a first time.
Keep turning the shift till the rod falls inside a vane
groove. Mark it again and measure the gap between the
two marks.
• If this gap exceeds 10 mm, then the vanes must be
replaced.
• At the end of this procedure, do not forget to replace the
plug.
• Replace all vanes at the same time.
Check the level when the pump is cooled: it must almost reach the
threaded port. Refill if necessary.
For a complete replacement, 0.7 litres are required. Use mineral oil
with E additives for gears and transmissions.
Dispose of exhausted oil as prescribed by current specifications.
CHECKING THE SIDE MOUNTED OIL TANK LEVEL
CHECKING THE VANES WEAR
CL
CHECKING THE GEAR BOX OIL LEVEL

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Recommended lubricants
Viscosity Type ENI ESSO SHELL TOTAL OBIL BP
ISO
VG 220 E mineral oil BLASIA 220
S ARTAN E
220
OMALA OIL
220
CARTER E
220
MOBILGEAR
630
ENERGOL GR
X 220
Use SAE 80W-90 mineral oil as an alternative to the lubricants written above.
Dispose of exhausted oil as provided by current specification.
When changing the oil, also replace the outlet plug washer.
Before starting any extraordinary maintenance operation, be sure the pump stands still and follow
the safety prescriptions as described in paragraph “Safety and accidents prevention”.
For pumps equipped with handle for manual operation
or hydraulic actuator.
Adjust the screws to avoid the valve blocking in its seat.
Do not exceed with the adjustment: possible
vacuum loss.
For pumps equipped with changeover valve
with hydraulic actuator: see the integrated part at the
end of these instructions.
9. EXTRAORDINARY AINTENANCE
ADJUSTING THE 4-WAY VALVE

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When replacing the vanes proceed as follows:
• Remove the vacuum pump from its bearing frame
and wash it before disassembling.
• Drain the cooling liquid from the pump housing (1)
• Remove the water pump cover (2) and the carter
(3)
• Disconnect lubricating pipes (4).
• Remove the lubricating pump (5).
• Remove the screws (6) fixing the rear flange (7)
and use the two threaded holes to remove the
flange – bearing – seal housing. If necessary,
hold the rotor by inserting a wooden block,
protecting the internal bearings from damage.
• Remove the bearing from the rear flange and
replace the seal if broken.
• Lubricate with oil the new vanes before inserting
those inside each groove of the rotor.
• Reinstall all the components in the following
order: rear flange, seal ring (non), bearing,
compensation ring, gasket and flange with
lubricating pump (we recommend to fit correctly
the pivot-key on the shaft groove).
• Tighten the nuts (pos. 6) by means of a dynamometric wrench adjusted at 88 Nm.
• Refill the cooling system and re-install the pipeline.
CAUTION
Do not damage components during assembly by forcing them
exceedingly. Do not flip the seal ring during rotation of the shaft. Do not
leave objects inside the pump.
The automatic lubricating pump is adjusted by the manufacturer before the
shipping. If consumption is different from the indicated value, adjust as
follows.
• Remove the upper protection cover.
• Using a screwdriver and a 10 mm wrench, adjust the adjusting screw
(K). Close the nut and put back the upper protection cover.It is
advisable to turn the screw of ¼ of turn and verify the actual
consumption.
Do not reduce oil consumption below the value indicated in the
“ erformance” paragraph (for functioning at speeds different from
the maximum, flow is proportionate to the rotating speed).
½ turn of the adjusting screw causes a flow variation of about 40 -
80 d/h, depending on using conditions.
REPLACING VANES
ADJUSTING THE LUBRICATING PUMP
CAUTION

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The pump with a 540 rpm gear box can be transformed into a pump with a 1000 rpm gear box (and vice versa).
• Remove the gearbox as above described. Remove also the pinion from the drive shaft.
• Install the new pinion and tight the nut as prescribed.
• Mount the new gear wheel including bearings and seals on their housings in the front cover, properly
aligned. This assembly can now be installed in the gear box: fit the front bearing in the specific seat of
the flange/cover.
• roperly engage gears, replace the cover’s gaskets to complete correctly the job. Insert the aligning
pins, which maintains the correct positioning.
The vacuum pump overheats
Insufficent or absent lubrication Verify oil and rings. Check oil pump efficiency
Low oil level Fill the oil tank
Too high rotation speed Reduce rpm to the prescribed one
rolonged functioning at the max vacuum rate Reduce vacuum rate
Vacuum and/or exhaust line of insufficient diameter
Check dimensionino
The vacuum pump does not rotate
Broken vanes: Clean inside chambers, replace vanes
- due to infiltraded solids Check the secondary shutoff and filters of the
suction line
- due to insufficient lubrication Check the oil pump
ower transmission breakdown Check and replace the damaged parts
Ice inside the pump (during the cold season) Remove ice and slowly start. Avoid suction of water
Performances loss
Four way changeover valve in idle position Move the lever in vacuum or in pressure mode
Worn vanes Replace vanes
REPLACING GEAR BOX COMPONENTS
10. TROUBLE SHOOTING
1000 R M 540 R M