DVP LC 8 Manual

VACUUM
TECHNOLOGY
OPERATING AND MAINT ENANCE
INSTRUCTIONS
(Translation of the original instructions)
VACUUM PUMPS WITH RECIRCULATING
LUBRICATION SYSTEM
LC 2
LC 4
LC 8
LC 12
LC 20

Operating and Maintenance Instructions
EN
LC 2 – LC 4 – LC 8 – LC 12 – LC 20
1
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INDEX
1INTRODUCTION....................................................................................................................................................2
1.1 GENERAL INFORMATION..............................................................................................................................2
1.2 MANUFACTURER INFORMATION ................................................................................................................2
1.3 METHOD OF CONSULTATION ......................................................................................................................2
1.4 PERSONNEL QUALIFICATIONS....................................................................................................................2
1.5 PERSONAL PROTECTION EQUIPMENT ......................................................................................................3
1.6 INFORMATION PLATE ...................................................................................................................................3
2SAFETY .................................................................................................................................................................3
2.1 GENERAL WARNINGS ...................................................................................................................................3
2.2 RESIDUAL RISKS ...........................................................................................................................................3
2.3 PICTOGRAMS.................................................................................................................................................4
3PUMP DESCRIPTION ...........................................................................................................................................5
3.1 INTENTED USE AND CONTRAINDICATIONS...............................................................................................5
3.1.1 INTENTED USE ........................................................................................................................................5
3.1.2 CONTRAINDICATIONS............................................................................................................................5
3.2 FKM VERSION ................................................................................................................................................5
3.3 DIMENSIONS AND CHARACTERISTICS.......................................................................................................6
3.3.1 Model: LC 2 – LC 4 ..................................................................................................................................6
3.3.2 Model: LC 8 ..............................................................................................................................................7
3.3.3 Model: LC 12 ............................................................................................................................................8
3.3.4 Model: LC 20 ............................................................................................................................................9
3.4 NOISE EMISSION .........................................................................................................................................10
4INSTALLATION ...................................................................................................................................................10
4.1 RECEIPT AND CONTENT VERIFICATION ..................................................................................................10
4.2 PACKAGING .................................................................................................................................................10
4.3 TRANSPORT AND HANDLING.....................................................................................................................10
4.4 STORAGE .....................................................................................................................................................10
4.5 ENVIRONMENTAL CONDITIONS ................................................................................................................11
4.6 PUMP INSTALLATION ..................................................................................................................................11
4.7 USER SYSTEM .............................................................................................................................................11
4.8 CONNECTION...............................................................................................................................................11
4.8.1 INTAKE AND OUTLET CONNECTIONS................................................................................................11
4.8.2 WIRING ...................................................................................................................................................12
5OPERATING INSTRUCTIONS............................................................................................................................13
5.1 OPERATION..................................................................................................................................................13
5.1.1 FILLING THE OIL TANK .........................................................................................................................13
5.1.2 START-UP ..............................................................................................................................................13
5.1.3 STOP.......................................................................................................................................................13
5.1.4 PUMPING WATER VAPOUR .................................................................................................................13
6MAINTENANCE...................................................................................................................................................14
6.1 GENERAL WARNINGS .................................................................................................................................14
6.2 MAINTENANCE TABLE ................................................................................................................................14
6.2.1 CHECK OIL LEVEL.................................................................................................................................14
6.2.2 CHANGE OIL ..........................................................................................................................................14
6.2.3 CLEAN MOTOR FAN GUARD EAND CLEAN THE PUMP....................................................................15
6.2.4 CHANGE THE AIR EXHAUST FILTER ..................................................................................................15
6.2.5 CHANGE VANES....................................................................................................................................15
6.3 SPARE PARTS..............................................................................................................................................15
7HOW TO RETURN THE PUMP...........................................................................................................................16
8DISMANTLING ....................................................................................................................................................16
9TROUBLESHOOTING.........................................................................................................................................17

Operating and Maintenance Instructions
EN
LC 2 – LC 4 – LC 8 – LC 12 – LC 20
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1
INTRODU
CTION
1.1
GENERAL INFOR
MATION
This manual is meant to provide you with important information for the safety of persons involved in pump use and
maintenance.
This manual, originally written in ITALIAN, is an integral part of the pump and must be preserved with care for the
life of the pump itself. In the event of sale, lease or loaned use of the pump, it must be delivered to the new user
along with EC declaration of conformity.
Carrying out any operations on the pump before reading and fully understanding all instructions in this manual is
prohibited.
The images contained in this document are examples only and are not binding for the Manufacturer. The
Manufacturer reserves the right to make changes to components, product improvement parts and any other without
updating this manual, if said components or parts do not alter pump operation and safety.
1.
2
MANUFACTURER INFORMATION
D.V.P. Vacuum Technology s.p.a.
Via Rubizzano, 627
40018 - S. Pietro in Casale (BO) - ITALY
Ph [phone]
Fx [phone]
e-mail: [email protected]
web site: http://www.dvppumps.com
Please always include the following information in all communications regarding the pump:
•pump model and serial number
•year of manufacture
•date of purchase
•detail information regarding problems verified
1.
3
M
ETHOD OF
CONSUL
T
ATION
For improved understanding of the information provided in this manual, warnings or instructions considered critical
or hazardous are marked with the following symbols:
HAZARD
Failure to comply with these instructions may cause hazards to persons.
WARNING
Failure to comply with these instructions may cause damage to the pump.
1.
4
PERSONNEL QUALIFICATIONS
DVP products covered by this manual are intended for PROFESSIONAL use only.
To ensure that all operations performed on the pump are carried out safely, operators must have the qualifications
and requirements to carry out its operations.
Operators are classified as follows:
FIRST LEVEL OPERATOR:
Unqualified personnel, having no specific skills, able to perform simple tasks only.
MECHANICAL MAINTENANCE OPERATOR:
Technician qualified to work on mechanical parts to carry out any necessary adjustments, maintenance
or repairs. Not qualified to work on electrical systems in the presence of voltage.
ELECTRICAL MAINTENANCE OPERATOR:
Technician in charge of all operations of an electrical nature. Can operate in the presence of voltage
inside cabinets and connector boxes.

Operating and Maintenance Instructions
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1.
5
PERSONAL PROTECTION EQUIPM
ENT
This manual assumes that the pump has been installed in workplaces, which comply with all mandatory safety
requirements; in particular, it is mandatory that personnel are equipped with personal protective equipment in
relation to the activities that must be performed.
1.
6
INFORMATION PLATE
All pumps are equipped with an identification plate that contains the manufacturer's name, address, CE marking
and technical data of the pump itself.
WARNING
Removing or tampering with the identification plate is strictly prohibited.
2
S
AFETY
2.1
GENERAL WARNINGS
It is important to read this manual before performing any operation on the pump. Compliance with the safety
standards of the country in which the pump is installed and requirements of qualified personnel for various
maintenance, use, installation, etc. are recommended throughout the life of the pump.
The main rules of conduct to be observed for operation at a suitable level of security are the following:
•Installation, operation, maintenance, etc. operations should always be performed by qualified, trained personnel.
•Without exception, always wear necessary personal protective equipment.
•Always perform all cleaning, adjustment and maintenance operations with all power equipment cut off.
•Do not direct water jets toward electrical parts, even if they are protected by enclosures.
•Do not smoke during work or maintenance, especially where solvents or flammable materials are being used.
•Do not damage symbol plaques or pictograms on the pump. If they should accidentally become damaged,
immediately replace them with other identification plaques.
D.V.P. Vacuum Technology s.p.a. disclaims any liability for damage to persons or property resulting from improper
use of the pump, from tampering with its safety apparatus or failure to observe operational safety standards.
2.2
R
ESIDUAL
RISKS
HAZARD
This pump has been designed to minimise residual risks to personnel. We urge you, however, to
take the utmost care and attention in carrying out maintenance operations. The confidence gained
with frequent contact with the pump too often le
a
ds use
r
s to forget or un
derest
imate risks.
High temperature hazard
Pump surfaces can exceed a temperature of 70°C. Install the pump in a protected area that is accessible only by
authorised personnel and only perform operations when the pump is stopped and cooled.
Hazard generated by low pressure
Avoid contact with pump intake attachment during operation. Introduce air into the suction circuit before any
intervention. Contact with low pressure points can cause accidents.
Hazard generated by pressure
The pump tank is pressurised. Do not open and do not leave oil filler or drain plugs open during operation.

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Danger from the emission of harmful substances
Pump outlet air contains traces of oil mist. Ensure compatibility with the working environment.
Faults or wearing of seals may cause oil lubricant leaks. Avoid dispersion in soil and pollution of other materials.
Whenever air containing hazardous substances are sucked in (i.e. biological or microbiological agents), use
abatement systems placed before the vacuum pump. Used oil must be disposed of according to applicable
regulations in the country of pump use.
Electrical hazard
Electrical equipment in the pump includes live parts which, upon contact, can cause serious damage to persons
and property. Any kind of intervention on the electrical system must be performed by qualified personnel.
Fire hazard
Use of the pump for any uses not provided for or prohibited by this manual as well as a lack of proper maintenance
can cause malfunction with a risk of overheating and fire.
In case of fire, do not use water to extinguish the flames, but use dry chemical or CO2 or other means compatible
with the presence of electrical equipment and lubricants.
Slip and fall hazards
The “L” series vacuum pumps use lubricant to operate. A simple maintenance or improper use not complying with
the instructions included in this manual can damage the gaskets and/or seals and cause the lubricant to spill on the
floor constituting slip and/or fall hazards for personnel.
Entanglement hazard
There is a permanent impending hazard of entangling or entrapping hair and clothing in the cooler fan inside the
guard near the fan casing on the electric motor. Tie long hair up and do not wear baggy clothing, long laces or
other items that could get caught up.
Part projection hazard
Install the pump in order to avoid those in charge of works being directly hit by parts or bits of parts flying through
the fan cover casing due to the cooling fan breaking.
2.3
PI
CTOGRAMS
Pictographs with the warning symbols and safety symbols for operators have been applied to the pump. Read
carefully and take note of the symbols and their messages before using the pump.
ELECTRICAL HAZARD
The pump is near electrical connections (protected) but where accidental contact can cause
electric shock and death.
HOT SURFACE HAZARD
The pump is close to surfaces with temperatures exceeding 70°C which may lead to burns of
medium severity.
REFER TO INSTRUCTION MANUAL/BOOKLET
Before use read the instructions in the operating manual.
D.V.P. Vacuum Technology s.p.a. disclaims any liability for damage to persons or property due to non-compliance
with instructions indicated in pictograms or their improper preservation.

Operating and Maintenance Instructions
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LC 2 – LC 4 – LC 8 – LC 12 – LC 20
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3
PUMP DESCRIPTION
3.1
INTENT
ED
USE
A
ND CONTRAINDICATI
ONS
3.1.1
INTENTED USE
DVP products covered by this manual are intended for PROFESSIONAL use only.
The pumps described in this manual are oil recirculating rotary vane pumps. These vacuum pumps have been
specifically designed to work with clean air, inert gas or small amounts of water vapour, having a temperature
between 12 and 40 °C at the intake.
These pumps are suitable to evacuate small closed vessels or, in case of some models, to work continuously at
specific final pressure, as explained in paragraph 3.3 “Dimensions and characteristics “.
Any other use is prohibited. The Manufacturer is not liable for any damage to persons and/or property caused by
improper use or not allowed use of the pump.
3.1.2
CONTR
AINDICATIONS
Any use other than that for which the pump was constructed is to be considered an
abnormal condition and therefore can cause damage to the pump and pose a
serious danger to the operator.
Below is a series of operations involving improper use of the pump, which are not permitted under any
circumstances.
•Do not use the pump in an explosive or aggressive atmosphere or in an atmosphere with a high concentration
of dust or oily substances in the air and do not use the pump to pump explosive, flammable or corrosive gases
or gas that form particles. Using the pump in these atmospheres and with these types of gases can cause
injury, explosion, fire or serious damage to the pump.
•Do not use non-original spare parts or parts not provided by the manufacturer.
•Do not use the unit to pump solid materials, chemicals, powders, solvents or other substances differing from
those permitted These types of materials may damage the unit, degrade its performance or reduce its life.
•do not expose the pump to rain, steam or excessive humidity.
•Do not place or store near in the proximity of flammable or combustible materials or substances.
•Do not use the pump as a compressor.
3.2
FKM
VERSION
This version of the pump is equipped with special technical devices, such FKM seals that allow for use even in the
presence of some aggressive gases.
WARNING
Contact the seller to make sure that the pump is suitable for use with a given aggressive gas.

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3
.3
DIMENSION
S AND CHARACTERISTICS
3.3.1
Model:
LC
2
–
LC
4
B
A

A
Intake
3
Info
r
mation plate
7
O
il dra
in plug
B
Air outlet
4
Attachment point
8
Motor ra
ting plate
1
Motor
f
a
n guard
5
Oil filler plug

Only present on special versions
2
Term
inal board
6
Oil sight glass
TECHNICAL SPECIFICATIONS
LC 2 LC 4
50 Hz 60 Hz 50 Hz 60 Hz
Inlet capacity m³/h 2 2,5 4 4,8
Final pressure (Abs.) mbar - hPa 10 2
Max inlet pressure for water vapour mbar - hPa - - - -
Max water vapour pumping rate kg/h - - - -
Motor power kW (1~/ 3~) 0,12 / 0,12 0,15 / 0,15 0,12 / 0,12 0,15 / 0,15
Nominal r.p.m. n/min 2800 3300 2800 3300
Noise level (UNI EN ISO 2151) (K 3dB) dB(A) 48 52 48 52
Weight kg (1~/ 3~) 5,4 / 5,4
Type of oil cod. DVP BV32 (SW40)
Oil quantity dm³ 0,065
Pump Intake / Outlet Ø9mm (1/8″G) / - - -
Continuous-duty working renge (Abs.) mbar - hPa 500 ÷ 10 - - - -
Operating temperature (room temp. 20°C) °C 50 ÷ 55 55 ÷ 60 50 ÷ 55 55 ÷ 60
Required room temp. for place of installation °C 12 ÷ 40
Ambient temperature for storage/transport °C -20 ÷ 50
MAX humidity / altitude 80% / 1000m a.s.l. *
(*) Please contact the Manufacturer if environmental conditions are different from those prescribed.

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3.
3.
2
Model:
L
C 8
A
B
A
I
ntake
3
Oil drain plug
7
Terminal board
B
Air outlet
4
Oil s
ig
ht g
lass
8
Motor rating plate
1
M
otor f
a
n guard
5
Information plate

Only present on special versions
2
Attachment point
6
Oil filler plug
TECHNICAL SPECIFICATIONS
LC 8
50 Hz 60 Hz
Inlet capacity m³/h 8 9
Final pressure (Abs.) mbar - hPa 2
Max inlet pressure for water vapour mbar - hPa - - - -
Max water vapour pumping rate kg/h - - - -
Motor power kW (1~/ 3~) 0,25 / 0,25 0,30 / 0,30
Nominal r.p.m. n/min 2800 3300
Noise level (UNI EN ISO 2151) (K 3dB) dB(A) 56 58
Weight kg (1~/ 3~) 10,0 / 10,0
Type of oil cod. DVP SW40
Oil quantity dm³ 0,2
Pump Intake / Outlet “G 3/8 / 1/4
Continuous-duty working renge (Abs.) mbar - hPa - - - -
Operating temperature (room temp. 20°C) °C 75 ÷ 80 80 ÷ 85
Required room temp. for place of installation °C 12 ÷ 40
Ambient temperature for storage/transport °C -20 ÷ 50
MAX humidity / altitude 80% / 1000m a.s.l. *
(*) Please contact the Manufacturer if environmental conditions are different from those prescribed.

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LC 2 – LC 4 – LC 8 – LC 12 – LC 20
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3.
3.
3
Mo
del:
LC
12
B
A

A
Int
ake
3
Oil sight glass
7
Motor ratin
g plate
B
Air out
let
4
Oil filler plug
8
Motor f
a
n guard
1
Attachmen
t point
5
Information plate

Only present on special versions
2
Oil drain plu
g
6
Terminal board
TECHNICAL SPECIFICATIONS
LC 12
50 Hz 60 Hz
Inlet capacity m³/h 12 14
Final pressure (Abs.) mbar - hPa 2
Max inlet pressure for water vapour mbar - hPa 35
Max water vapour pumping rate kg/h 0,3
Motor power kW (1~/ 3~) 0,45 / 0,37 0,55 / 0,45
Nominal r.p.m. n/min 2800 3300
Noise level (UNI EN ISO 2151) (K 3dB) dB(A) 62 64
Weight kg (1~/ 3~) 14,0 / 12,5
Type of oil cod. DVP BV32 (SW40)
Oil quantity Min÷Max dm³ 0,30 ÷ 0,40
Pump Intake / Outlet “G 1/2
Continuous-duty working renge (Abs.) mbar - hPa 400 ÷ 2
Operating temperature (room temp. 20°C) °C 60 ÷ 65 65 ÷ 70
Required room temp. for place of installation °C 12 ÷ 40
Ambient temperature for storage/transport °C -20 ÷ 50
MAX humidity / altitude 80% / 1000m a.s.l. *
(*) Please contact the Manufacturer if environmental conditions are different from those prescribed.

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3.
3.
4
Model:
LC
20

B
A
A
Intake
3
Oil sight glass
7
Motor rating
plate
B
Air outlet
4
Oil filler plug
8
Motor f
a
n guard
1
Terminal board
5
I
n
formation plate

Only present on specia
l ver
sions
2
Oil drain
plug
6
Attachment point
TECHNICAL SPECIFICATIONS
LC 20
50 Hz 60 Hz
Inlet capacity m³/h 20 24
Final pressure (Abs.) mbar - hPa 2
Max inlet pressure for water vapour mbar - hPa 15
Max water vapour pumping rate kg/h 0,25
Motor power kW (1~/ 3~) 0,75 / 0,75 0,90 / 0,90
Nominal r.p.m. n/min 2800 3300
Noise level (UNI EN ISO 2151) (K 3dB) dB(A) 64 67
Weight kg (1~/ 3~) 19,0 / 17,0
Type of oil cod. DVP BV32 (SW40)
Oil quantity Min÷Max dm³ 0,45 ÷ 0,50
Pump Intake / Outlet “G 1/2
Continuous-duty working renge (Abs.) mbar - hPa 400 ÷ 2
Operating temperature (room temp. 20°C) °C 60 ÷ 65 65 ÷ 70
Required room temp. for place of installation °C 12 ÷ 40
Ambient temperature for storage/transport °C -20 ÷ 50
MAX humidity / altitude 80% / 1000m a.s.l. *
(*) Please contact the Manufacturer if environmental conditions are different from those prescribed.

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3.
4
N
OISE EMISSION
This pump has been designed and constructed to reduce noise at its source.
The sound pressure levels contained in the table of technical specifications were measured at maximum vacuum
and outlet conveyed according to UNI EN 2151.
4
INSTA
LLA
TION
4.1
R
ECEIPT AND CONTENT VERIFICATION
Upon receipt of the pump, verify that the packaging is intact. If everything is intact, unpack the contents and check
the pump. If packaging shows signs of damage due to transport or storage conditions, immediately notify the
shipping agent and the manufacturer.
It is always necessary to check that the material received corresponds to its accompanying document.
Packages should be opened taking all precautions to avoid harm to people and the contents thereof.
4.2
PACKAGING
Depending on the size and based on the mode of transport, the pump is packaged in the following ways:
•single box with infill material;
•on wooden pallets with cardboard covers;
•
in single boxes positioned on pallets with protective
film
.
The pallet wood can be reused or recycled in accordance with applicable laws in the country of pump installation.
Other materials such as cardboard, plastic or protective film must be disposed of in accordance with local
regulations.
Do not burn or disperse package components in the environment.
4.3
TRA
NSPORT AND HANDLI
N
G
HAZARD
All transportation, lifting and handling operation must be performed by qualified and experienced
personnel.
The pump can be lifted and moved with forklifts or with lifting equipment (ropes, hooks, etc.) that are appropriate to
the weight indicated in the table of technical data and on the identification plate. Manual handling and
transportation are permitted only in accordance with local regulations.
WARNING
Prepare the pump as detailed in the next chapter and empty the oil tank (see "Changing the oil")
for transport.
4.4
STO
RAG
E
Drain the pump of oil inside and close the intake and outlet with the appropriate protections. The pumps are to be
stored in their packaging and stored in covered, dry, protected places that are not exposed to bright sunlight, with
temperatures in the range indicated in the table of technical specifications.
In case of long periods of stop inside the warehouse or out of production with storage, the location should meet the
specifications described in Chapter 3 (Pump description). In order to keep rubber parts and lip seals efficient and
properly working, we recommend to operate the pump for at least 30 minutes every 6 months with the intake
closed, following the instructions and provisions described in this manual, paying particular attention to those in
Chapter 5 (Use instructions). The non-observance of the provisions could cause the rubber parts to degrade
leading to oil leakages during operation.

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4.5
ENVIRONMENTAL CONDITIONS
The pump must be installed and used in a covered and adequately lit location. The installation area must meet all
requirements of height, air circulation and meet the requirements imposed by existing legislation.
Temperature, Humidity and altitude
The corresponding limit values are shown in the table of the technical specifications (chapter 3.3). Please contact
the Manufacturer if environmental conditions are different from those prescribed.
Lighting
All areas must be illuminated evenly and sufficiently to ensure all operations included in this manual and must be
without shadows, reflections, glare or eyestrain.
4.6
PUMP INSTALLATIO
N
To ensure perfect pump operation, house and place it according to the following conditions:
•Allow sufficient space on the perimeter sides of the pump and make sure to keep the motor ventilation side free.
•Make sure the free space adjacent to the pump allows easy access to components for inspection or
maintenance and also allows access for suitable lifting equipment.
•The pump is equipped with mounting points. It is necessary to ensure it locks onto a perfectly horizontal plane in
order to avoid tilting in case of transportation by the system user.
•Some models are already equipped with rubber vibration dampers installed at pump attachment points.
Whenever the model has not been equipped, ensure installation of such equipment so as not to transmit
vibration to the pump.
•Ensure there is ventilation in the room, or inside the machine housing the pump and prevent air coming in from
the outlet or cooling fans, which could cause discomfort to personnel.
WARNING
Do not install the pump in any area with dust or other materials that could clog or rapidly cover
cooling surfaces.
4.7
USE
R SYSTEM
Make sure that no harmful substances contaminate the user system during installation.
If you wish the system to maintain vacuum even when pump is stopped, install a cutoff valve between
pump and system.
Make sure that no vibrations or stresses are transmitted to the pump connection.
4.8
C
O
NNECTION
HAZARD
Pump connections should be performed by skilled and trained personnel only.
4.8.1
INTAKE AND OUTLET CO
NNECTIONS
User system connections (both intake and outlet) must be performed with pipes with a diameter equal to or greater
than the pump suction inlet. The weight of pipes or any expansions must not burden the pump.
It is advisable to make the final connection to the pump using flexible pipe or fittings. It is important to tighten all
pipes and couplings. Very long pipes or pipes with a diameter that is too small diminish pump performance.
HAZARD
Make sure that discharged gases are let out of the workplace.
WARNING
Always install an intake filter, especially if the pump is to work with air that might contain foreign
matters.
Pump outlet gases must be treated in such a way that they do not contaminate the working environment and the
surrounding atmosphere. If condensable vapours are pumped in, the discharge hose should be routed downwards
and have no bends to prevent the condensate produced in the discharge line from building up or flowing back into
the pump.
Never use friction hoses with hose diameters smaller than the intake diameter. Avoid exceeding hose lengths, tight
bends or bends spaced too closely together.
WARNING
Do not insert outlet fitting pipes or devices that block or impede the disposal of outlet gases (max
overpressure exhaust 0.3 bar).

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4.8.2
W
IRING
WARNING
Check that network voltage and frequency correspond to values contained on the motor rating
plate.
The connection cable must be adequate for the power absorbed by the pump (absorption values are shown on the
pump motor rating plate) taking into account the environmental conditions of operation.
HAZARD
Always ground the pump.
Always install a security system between the pump and the electric power supply. Pump absorption values are
shown on the motor rating plate.
The pump is normally supplied without an electrical cable and switch. For electrical connection, see the diagram
contained within the terminal board or on the motor rating plate.
WARNING
Check that the direction of rotation is correct before starting the pump for the first time or after
changing the electrical connections.
The correct direction of rotation is indicated by the arrow on the pump (see ch. 3.3). Pump
operation with a rotation direction that is opposite to that indicated can severely damage the
pump itself.

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5
OPERATING INSTRUCTIONS
5.1
OPERATION
Checks
to be p
erformed before start
-
up:
•The pump is supplied without any oil in it. Use the supplied oil or an oil lubricant indicated on the identification
plate of this pump (see ch. 3.3) or, alternatively, an alternative lubricant of another brand but with similar
characteristics;
•
Make sure the pump outlet is not obstructed by fittings.
WARNING
A quantity of oil that exceeds the necessary quantity may cause the clogging of oil separators and
damage to the pump or to the electric motor.
Operation without lu
bricant
causes serious damage to the pump.
5.1.1 FILLING THE OIL TANK
WARNING
When filling the oil tank never exceed allowed maximum level.
•Undo the oil filler plug;
•Pour oil in the tank up to mid-range of the oil sight glass;
•Close the filler plug
•
Remo
ve all oil spills from the pump and/or floor.
5.1.2
START
-
UP
HAZARD
The pump may reach high temperatures when operating.
After start-up, the pump may run slower than the regular rpm if room temperature is lower than allowed as seen on
the technical data table. It may also run lower if the oil is contaminated or the supply voltage is lower than the
required voltage as indicated on the motor rating plate.
If nominal rpm is not reached within a few seconds, the thermal switch fitted to protect the pump must trip
(installation required in paragraph "Wiring").
WARNING
If water vapour should be taken in, take the pump to a steady temperature by leaving it to run for
approximately 30 minutes with the suction inlet closed and the system containing the water
vapour isolated before starting the work cycle.
WARNING
Make sure the pump is working at the allowed pressure value and do not leave the pump running
for a long time with the suction inlet completely open.
HAZARD
Full r.pm. pump operation must be without vibration or unusual noise. If these are present, stop
the pump im
m
ediately, search for the cause and elimin
ate i
t.
5.
1.
3
STOP
The pump must be stopped by cutting off the power supply.
If the pump is to be powered off, let it run with closed intake for about 30 minutes first.
This will eliminate any moisture inside the intake chamber and avoid rotor oxidation.
In the case of long machine downtime, completely empty the pump to avoid hazards of frost during cold weather or
corrosion due to possible chemical alteration of the stagnant liquid in the pump.
5.1.4
PUMPING
W
ATER VAPOUR
While operating in the presence of water vapour, the pump takes in a mixture of air and water which enters the
pump and therefore also the oil tank.
The aspirated water vapour is expelled by the heat generated by the pump during operation. On models LC 12 and
LC 20 there is an integrated regulating ballast which ensures the constant flow of ambient air from the pumping
room, allowing the expulsion of aspirated water vapour before it condenses into the lubricating oil.
Therefore, if water vapour is present, it is essential that before the work cycle is started the pump must
reach its operating temperature – this is achieved by running it for about 30 minutes with the suction inlet
closed
and
isolating it from the user system
.

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\
6
MA
INT
E
NANCE
6.1
GENERAL WARNINGS
For good maintenance:
•Immediately verify the causes of any malfunctions (excessive noise, overheating, etc.);
•Pay particular attention to safety devices;
•Make use of all documentation provided by the manufacturer (instruction manuals, wiring diagrams, etc.);
•Use only appropriate tools and original spare parts.
In the event of a failure to understand the information or procedures contained in this chapter, contact D.V.P.
Vacuum Technology s.p.a. for clarification before proceeding.
HAZARD
Do not perform any type of operation, modification and/or repair of any kind, except for those
listed in this manual.
Only trained or authorised personnel have the necessary expertise to perform tasks with the
technique appropriate for intervention.
HAZARD
All maintenance operations must be carried out with the pump disconnected from any power
sources. Do not operate the pump until it has reached a temperature that is not dangerous for
the operator.
HAZARD
If pump maintenance has been performed in a manner inconsistent with instructions, with
non-original spare parts or otherwise so as to impair its integrity or modify its characteristics,
D.V.P. Vacuum Technology s.p.a. will be released from any liability relating to the safety of
persons and malfunction of the pump.
6.
2
MAINTENANCE TABLE
The following table shows all required periodic operations to maintain pump efficiency.
OPERATION TYPE FREQUENCY OPERATOR
QUALIFICATION
Check the oil level
24 h
Change oil
500 h
Clean motor fan guard and clean pump
1000 h
Change the air exhaust filter
2000 h
Change vanes
10000 h
Shorter maintenance intervals may be required according to operating conditions (high temperature of intake
gases, intake gases containing condensable vapours, etc.).
6.2.1
CHECK OIL LEV
EL
Check that oil level is at mid-range of the oil sight glass. If not, see instructions in the following paragraph.
Check oil conditions. When dark or cloudy, oil has been contaminated by intake substances and must be changed.
6.2.2
CHANGE OIL
Change oil as follows:
•let the pump run with closed suction intake for about 10 minutes first so oil will become thinner;
•stop the pump and disconnect it from the mains;
•undo the oil filler plug;
•get a container large enough to hold all oil and open the oil drain plug;
•drain out all oil;
•close drain plug and fill in fresh oil through the filler plug up to mid-range on the oil sight glass;
•close the oil filler plug;
•connect to mains again and verify correct rotation direction of the pump (see chapt. 3.3.);
•let the pump run with closed intake for a few minutes and then, if necessary, top up oil if necessary.

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HAZARD
Wear appropriate personal protection equipment to perform said operations.
HAZARD
Comply with local regulations regarding the collection and disposal of used or polluted oil.
6.2.3
CLEAN MOTOR FAN GUARD EAND CLE
AN THE PUMP
Radiator, motor fan guard and the pump should be cleaned to remove any dust deposits.
This can be done using compressed air and a dry cloth.
Do not use fluids or substances other than those indicated.
HAZARD
Wear appropriate personal protection equipment to perform said operations.
6.2.4
CHANGE THE AI
R EXHAU
ST FILTER
The air exhaust filter must be changed when it is damaged or clogged or when it has reached its authorised life as
per Chap 6.2.
Only use original DVP filters from the Air Exhaust Filter Kit (see Chap.6.3). Use of parts other than those approved
by DVP can cause deterioration of the pump.
The signs showing a filter is clogged or damaged are increased exhaust fumes, increased noise-level and
consumption of electricity (see Chap.9 points C and E).
It is possible to measure the level of clogging of the oil separator filter by looking at the ΔP of the filter with the
pump warm. On pumps equipped with a measuring point for ΔP it is possible to check the filter by attaching a
gauge or the accessory code SIF.2 to it. For pumps without this facility a measuring instrument can be connected
in place of the oil filler cap.
For a pump operating and with hot oil the filter is clogged if the value of ΔP is greater than 0.7bar (at sea level). If
this is the case the oil separator filter must be replaced.
6.2.
5
CHANGE VANES
The instructions for replacing vanes are available upon request.
6.
3
SPARE PARTS
Use Original Spare Parts to replace pump parts.
When purchasing spare parts, always quote the serial number and model of the pump (these can be found on the
identification plate) as well as the spare part purchase number.
DESCRIZIONE LC 2 LC 4 LC 8 LC 12 LC 20
Air exhaust filter kit
K9601069 K9601070 K9601073 K9601064 K9601066
Maintenance kit
K9601069/1 K9601070/1 K9601073/1 K9601064/1 K9601066/1
Oil 0,25 dm³
8811025 (BV32)
8831025 (SW40) 8831025 (SW40)
8811025 (BV32)
8831025 (SW40)
Oil 0,5 dm³
8811050 (BV32)
8831050 (SW40) 8831050 (SW40)
8811050 (BV32)
8831050 (SW40)
Oil 1 dm³
8811100 (BV32)
8831100 (SW40) 8831100 (SW40)
8811100 (BV32)
8831100 (SW40)
Oil sight glass
1105005 1105009 1105004
Check valve
Fitted
D.V.P. Vacuum Technology s.p.a. disclaims all responsibility for any deterioration of pump performance or for
damages caused due to use of non-original spare parts.

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7
HOW TO RETURN THE PUMP
The product may only be returned after prior agreement with the supplier, who will provide the authorisation
number that must accompany the material delivered and should be duly complete in its entirety.
8
DISM
ANTLING
Demolition of the pump must be performed by authorised technicians.
Metal parts can be disposed of as scrap metal.
All materials deriving from demolition must be disposed of according to regulations in the country where the pump
will be demolished.
HAZARD
Disposal operations involve risks of cutting, shavings protection, entanglement, contact with
moving parts and contact with chemicals. Operators should use the appropriate personal
protective equipme
nt.
(Note for devices under EEE management, with the label shown on the side as an example)
INFORMATION FOR USERS OF PROFESSIONAL EQUIPMENT
"Implementation of Directive 2012/19/EU on waste electrical
and electronic equipment (WEEE)'.
Information available at www.dvppumps.com in the WEEE section.

Operating and Maintenance Instructions
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9
TROUBLESHOOTING
DAMAGE CAUSE REMEDY
(A)
The pump does not run
No voltage Provide power supply
Thermal switch has tripped Identify reason and activate switch
Room temperature is too low Restore room temperature to allowed
range
Motor winding damaged Contact Service Department
(B)
The pump cannot
reach stated vacuum
Low oil in tank Top up oil
Oil contaminated Change oil
Discharge clogged Check couplings at outlet
(C)
Pump is noisy
Air exhaust filter clogged Change the air exhaust filter
Bearings damaged Contact Service Department
Vanes worn out Contact Service Department
(D)
Pump runs hot
Oil is not the suitable type Change oil
Poor room ventilation Install an auxiliary ventilator
Motor fan broken Contact Service Department
Wrong power supply to motor Check power supply
Discharge clogged Check couplings at outlet
(E)
High oil consumption
High working pressure
(close to atmospheric pressure) Check oil level frequently
Pump runs hot See point “D”
Air exhaust filter clogged Change the air exhaust filter
(F)
Pump does not
maintain vacuum after
power
-
off
Check valve damage (if fitted) Contact Service Department
(G)
Pump leaks oil
Tank screws or plugs loosened Tighten screws or plugs
Tank gaskets damaged Contact Service Department
Oil sight glass not tightened Tighten the oil sight glass

Operating and Maintenance Instructions
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LC 2 – LC 4 – LC 8 – LC 12 – LC 20
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Operating and Maintenance Instructions
EN
LC 2 – LC 4 – LC 8 – LC 12 – LC 20
19
8702036 – 01/04/2022 – R.10 www.dvppumps.com