LEYBOLD SOGEVAC SV300 FP User manual

SOGEVAC®
SV300 FP
Single-stage, oil-sealed rotary vane pump
Original Operating Instructions 300419816_002_C1
and Spare Parts list
Part Numbers :
960702FP
960707FP
960717FP

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0 Important Safety Information
1 Description
1.1 Design and function
1.2 Standard specification
1.3 Technical data
1.4 Ordering Information
1.5 Connection fittings
1.6 Accessories
1.7 Spare parts
1.8 Lubricants and grease
2 Transport and Storing
3 Installation
3.1 Setting up
3.2 Conforming use
3.3 Connection to system
3.4 Electrical connections
3.3 Start-up
4Operation
4.1 Pumping of Non-condensable Gases
4.2 Pumping of Condensable Gases and Vapors – Using gas ballast
4.3 Working in cycles in / out
4.4 Shutdown
4.5 Pump Ultimate Pressure
5Maintenance
5.1 Leybold Service
5.2 Maintenance Schedule
5.3 Checking the Oil
5.4 Oil change, Replacing the Oil Filter
5.5 Cleaning the Dirt Trap
5.6 Checking the anti-suckback valve
5.7 Cleaning the Gas Ballast Intake Filter
5.8 Disassembly of electrical motor
5.9 Radiator cleaning
5.10 Exhaust filter exchange
6Troubleshooting
7 Spare Parts
8 Waste Disposal
EU Declaration of Conformity
Contents
Page
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Safety Information
Obligation to Provide Information
Before installing and commissioning the pumps, carefully read these
Operating Instructions and follow the information so as to ensure opti-
mum and safe working right from the start.
The Leybold SOGEVAC® has been designed for safe and efficient opera-
tion when used properly and in accordance with these Operating Instruc-
tions. It is the responsibility of the user to carefully read and strictly ob-
serve all safety precautions described in this Section and throughout the
Operating Instructions. The SOGEVAC® must only be operated in the
proper condition and under the conditions described in the Operating In-
structions. It must be operated and maintained by trained personnel only.
Consult local, state, and national agencies regarding specific requirements
and regulations. Address any further safety, operation and/or maintenance
questions to our nearest office.
DANGER indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE is used to notify users of installation, operation, programming
or maintenance information that is important, but not hazard related.
We reserve the right to modify the design and the specified data.
The illustrations are not binding.
Retain the Operating Instructions for further use.
NOTICE
DANGER
WARNING
CAUTION
NOTICE

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Safety Information
0Important Safety Information
0.1 Mechanical Hazards
1Never expose part of the body to the vacuum. There is a danger of
injury. Never operate the pump with an open and thus accessible in-
let. Vacuum connections as well as oil filling and oil draining open-
ings must not be opened during operation of the pump.
0.2 Electrical Hazards
1 The electrical connection must only be provided by a trained person.
Please observe the national regulations in the country of use like EN
50110-1 for Europe, for example.
2 Disconnect the unit from the power supply before starting any work.
0.3 Thermal Hazards
1When operating pump is hot and some surfaces could reach a tem-
perature higher than 80 °C (176 °F). There is a risk of burn by touch-
ing.
0.4 Hazards Caused by Materials and Substances
1 SOGEVAC® pumps are not designed:
■ for pumping of dusty, aggressive, corrosive, flammable or explosive
gases or gases mixtures;
■ for pumping of oxygen or other highly reactive gases with a greater
concentration than atmospheric concentration (>20%);
■ for pumping liquids;
■ for working in flammable, explosive or dusty environment.
In case of doubt, please contact Leybold.
See also the limits of use indicated in the CE declaration of conformity.
2 Depending on the process involved, dangerous substances and oil
may escape from the pump. Take the necessary safety precautions!
3 Take appropriate precautions to insure that the pump cannot start.
4If the pump has pumped hazardous gases it will be absolutely neces-
sary to determine the nature of the hazard involved and take the ap-
propriate safety precautions.
5Observe all safety regulations!
6Take adequate safety precautions prior to opening the intake or ex-
haust port.
7 Respect the instructions concerning environment protection when dis-
carding used oil or exhaust filters!
WARNING
DANGER
CAUTION
DANGER

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Safety Information
0.5 Danger of Pump Damage
1Liquid and solid particles must not enter the pump. Install the ade-
quate filters, separators and/or condensers. In case of doubt consult
Leybold.
2The intake line of the pump must never be connected to a device
with over atmospheric pressure. Design the exhaust line so that no
pressure higher than 1,15 bar abs. (0,15 bar rel.) can occur. Never
work with closed or restricted pump exhaust.
3Operating of the pump without oil or operating with incorrect direc-
tion of rotation can destroy the pump or lead to oil backstreaming.
4Never use discarded seals. Always assemble using new seals.
5 The pump must be packaged in such a way that it will not be damaged
during shipping, and so that no harmful substances can escape from
the package.
NOTICE

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1Description
1.1 Design and function
The SOGEVAC® SV300 FP are single-stage, oil-sealed rotary vane pumps. The
anti-suck back valve, gas ballast valve (optional), exhaust filter, oil return circuit
and oil cooling oil are integrated functional elements. The pumps are driven by a
directly flanged motor.
The rotor mounted eccentrically in the pump cylinder has three vanes which di-
vide the pump chamber into several compartments. The volume of each changes
periodically with the rotation of the rotor.
As the rotor rotates, the intake portion of the pumping chamber expands and
sucks gas through the intake port. The gas passes through the dirt trap and the
open anti-suck back valve and enters the pump chamber. As the rotor rotates fur-
ther, the vane separates part of the pump chamber from the intake port. This part
of the pump chamber is reduced, and the gas is compressed. At slightly above
atmospheric pressure the gas is expelled from the chamber via the exhaust valve.
Oil injected into the pump chamber serves to seal, lubricate and cool the pump.
The oil entrained with the compressed gas is coarsely trapped in the oil case by
deflection. Then fine filtering occurs in the exhaust filter elements. The proportion
of oil in the exhaust gas is thus reduced below the visibility threshold (over 99 %
entrapment rate).
Oil trapped in the exhaust filters is returned to the inlet chamber via an oil return
transfer. To prevent gas flowing at atmospheric pressure from the oil reservoir
into the intake port, the oil return line is controlled by a float valve.
The oil cycle is maintained by the pressure difference existing between the oil
case (pressure above or equal to atmospheric pressure) and the intake port
(pressure below atmospheric pressure). The ball bearings are greased for 30 000
hours.
A fan running on the pump shaft generates the necessary cooling air. The oil
cools down through a radiator.
By opening the gas ballast valve, a controlled amount of air so called “gas ballast”
is admitted into the pump chamber. This gas ballast prevents condensation (up to
the limit of water vapor tolerance specified in the Technical Data) when pumping
condensable gases or vapors.
Unintentional venting of the vacuum chamber as well as oil suckback when shut-
ting down the pump are prevented by the integrated anti-suckback valve.
In applications where an oil-suckback must be avoided by all means, it is recom-
mended to install a dedicated valve.
Description

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1.2 Standard Specification
The pump is supplied with drive motor in ready-to-use condition. It is supplied with
mineral oil, which is filled in.
In any case, the oil type is indicated on the pump. No warranty claims could be
accepted with use of another oil than specified.
The connection ports are blanked off by plastic protective caps. Take these caps
away before turning on the pump.
1.3 Technical Data
1) according to DIN28400 and following numbers, with standard gas ballast
2) operated at ultimate pressure without gas ballast, free-field measurements at a distance of 1m
3) please contact Leybold.
Description
Technical Date (in SI units) 50Hz 60Hz
Nominal speed
1)
m
3
/h 280 340
Pumping speed
1)
m
3
/h 240 290
Ultimate partial pressure without gas ballast mbar ≤8.10-2≤8.10-2
Ultimate total pressure with standard gas ballast 7.5 Nm
3
/h mbar ≤0.7 ≤0.7
Water vapour tolerance with standard gas ballast 7.5 Nm
3
/h
mbar 10
with turbine 220 mm
40
with turbine 150 mm
12
with turbine 220 mm
50
with turbine 150 mm
Water vapour capacity with standard gas ballast 7.5 Nm
3
/h
Kg/h 1.3
with turbine 220 mm
6
with turbine 150 mm
1.8
with turbine 220 mm
8
with turbine 150 mm
Noise level
2)
dB(A) 72 76
Leak rate mbar.l.s-1≤1.10-3≤1.10-3
Mains voltage (std) - for other voltages
please contact Leybold
See Ordering data
Motor power See Ordering data
Type of protection IP55 IP55
Rated rotational speed min-11450 1750
Weight (with oil filling) kg 200 200
Oil capacity (min./max.) L8.5/11.5 8.5/11.5
Intake connection G2
G2
NPT2
3)
Exhaust connection G2
G2
NPT2
3)

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Description
ABWeight
EUR 1090 360 223Kg
JPN 1065 360 232Kg
USA 1065 360 222Kg
Wide Range 1100 384 224Kg

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Description
60Hz
Nominal speed
1)
cfm 200
Pumping speed
1)
cfm 171
Ultimate partial pressure without gas ballast Torr 6.10-2
Ultimate total pressure with gas ballast Torr 0.5
Water vapour tolerance with standard gas ballast standard 1) Torr ≤30
Motor power hp 10.5
Rated rotational speed rpm 1750
Weight (with oil filling) lb 430
Oil capacity (min./max.) qt 9/12.2
Intake connection NPT (F) inches NPT2
Exhaust connection NPT (F) inches NPT2
1000
100
10
1
Pumping speed (m3/h)
1000
100
10
1
Pumping speed (m3/h)
Pressure（mbar)
0.01 0.1 1 10 100 1000
50Hz 60Hz
———— without gas ballast — — with gas ballast Fig.2
Conversion factors Different pressure units Different pumping speed units
mbar
(millibar)
torr m3.h-1l.s-1cfm
1 lb = 0.453 kg
1 qt = 0.946 l
1013
400
760
300
m3.h-1 = m3/h 10.278 0.589
1 hp = 0.735 kw
1 r.p.m = 1 min-1
133
4
100
3
l.s-1 = l/s 3.6 12.12
1 inch = 25.4 mm 1
0.1
cfm (cubic feet per
minute)
1.699 0.472 10.75
0.75
1 atm (atmosphere) = 1013 mbar
1 Pa (pascal) = 0.01 mbar = 10-2 mbar
1 bar = 1000 mbar
1 torr = 1.33 mbar
Example：1m3h-1= 0.589 cfm = 1013mbar
Note : the nominal pumping speed of a pump at 60Hz is 20% higher than at 50Hz
0.01 0.1 1 10 100 1000
Pressure（mbar)

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1.4 Ordering Information
Ordering data Ref. No. S V 3 0 0 F P
Pump with three-phase motor CEI and integrated gas ballast valve 960702FP
230V/400V, +/-10%，50Hz，5.5Kw
460V, +/-10%，60Hz，6.3Kw
Pump with three-phase motor NEMA and integrated gas ballast valve 960707FP
208V +/-10% and 230/460 +/-10%, 60Hz, 10 HP
400V +/-10% 50Hz, 10 HP
Pump with wide range motor and integrated gas ballast valve 960717FP
200V -15% ... 230V +10% / 380 ... 400 V +/-10%, 50Hz, 5,5 kW
200V -15% ... 230V +10% / 380 ... 400 V +/-10% & 460 +/-10%, 60Hz, 6,6 kW
Other gas ballast variants available. Please contact us.
Description

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1.5 Connection fittings
Description
Fig. 3
Description Size Part. No.
1Union coupling + Seal G2 F/M 711 18 025
2Nipple G2 M/M - 50mm long 711 18 035
3Threaded flange adapter G2 M - DN63 ISO-K711 18 126
4Centering ring DN 63 ISO-K AL/NBR 268 07
5Set of 4 clamps for ISO-K flanges M10X24 267 01
6Adapter for tubing G2 DN50 711 18 015
7PVC tubing 50mm, 1m long 711 18 325
8Adapter for tubing G2 DN60 711 18 016
9PVC tubing 60mm, 1m long 711 18 326
10 Right-angle bend 90° 63 ISO-K887 25
11 Dust filter, metal
Dust filter, polyester 711 27 126 711 27 127
12 Ball valve G2 F/F 711 30 107
13 Tee reducer bush G2-G2-G1/2 F/F/F 711 18 265
14 Elbow 90° G2 F/F 711 18 215
15 Dust filter, metal
Dust filter, polyester
711 27 123
711 27 124
16 Vacuum gauge G1/2 M 951 92
17 Ball valve G1/2 M/F 711 30 113
18 Threaded flange adapter G1/2 M - DN16 KF 711 18 120
19 Regulation valve with isolation valve G1/2 M 951 87
20 Regulation valve G1/2 M 951 86
21 Condensate trap G2 F-G2F 951 44

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Description
1.6 Accessories
* Please consult us for retrofit. Our Service can carry out these upgrades.
Stability of pump is insured with accessories of Leybold; mounting of any other accessory will engage the responsibility
of user concerning stability of pump.
Specification Size Part. NoItem
Oil filter by-pass 712 30 5701
Oil drain tap G" ¾ 711 30 1142
Gas ballast kit manual ("small", "standard", "big") 9 714 64 1303
Gas ballast standard with EM valve 24 V DC (retrofit kit)4
with end-plate 9714 65 380 *
without end-plate 9714 65 680 *
Exhaust filter gauge 951 945
Exhaust filter overpressure switch 712 22 360 *6
Oil level monitor (only with all option oil casing) 712 21 992V * or7
9714 58 110 *
Thermal switch (105°C) 9 714 63 9308
PT100 9 714 64 0209
Adapter Roots 500 9 714 63 88010
Adapter Roots 1000 9 714 63 89011
Base frame for pump only 711 19 20812
Base frame for Roots direct mounting 9 714 56 59013
Water cooling with thermostatic valve
EK971449111 *
14
(only with all option oil casing)
Turbine kit 150 mm EK650319515
Separator SEP 63 953 5616
Separator SEP 63 stainless steel 953 5717
Separator - Condenser SEPC 63 953 6618
Separator - Condenser SEPC 63 stainless steel 953 6719

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Description
1.7 Spare parts
1.8 Lubricants & grease
Unless otherwise specified on the pump, we recommend to run the SOGEVAC®
pumps with LVO150 from Leybold or an equivalent oil which meets following re-
quirements and is approved by Leybold:
- low vapor pressure, even at high temperatures ;
- flat viscosity curve ;
- minimum water content and absorption ;
- good lubricating properties ;
- resistant to aging under mechanical strain.
If you use a non-approved oil, we cannot guarantee that our pumps will meet their
operating specifications (ultimate pressure, pumping speed, operating tempera-
ture, etc). However, the warranty is voided only if the non-approved oil adversely
affects the operation or reliability of the pump.
When using other oil brands, employ nodetergent mineral oils of viscosity class
ISO VG68 to ISO VG 100.
Use of other special-grade lubricants for specific applications is possible. Please
consult us.
Only use lubricants and grease which have been fully qualified by Leybold.
LVO150 is a food grade oil, H1 certificated by the NSF for incidental contact
with food products.
Specification Size Part. No.Item
Oil filter standard 710 18 8501
Exhaust filter EK 65 20 3912
Set of seals FKM 9 714 64 9503
Repair set 9 714 64 9604
Module kit G2” 9 714 47 3905
Module kit NPT2” 9 714 58 9706
Pump oil LVO150 Ref. No Grease Ref. No
1 liter L15001 400 gr 711 17 700
2 liters L15002
20 liters L15020

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Transport and Storing
2 Transport and Storing
Pumps which have been filled with operating agent must only be moved in the
upright position (horizontally). The angle of slope may not be over 10° max. Oth-
erwise oil may escape. Avoid any other orientations during transportation.
Check the pump for the presence of any oil leaks, because there is the danger
that someone may slip on the oil which has leaked from the pump.
Only use the lifting lugs which are provided on the pump to lift the pump with the
specified lifting devices.
Until the pump is put back in to service again, the pump should be stored in a dry
place, preferably at room temperature (20 °C) but not below 0°C.
Before taking the pump out of service, it should be properly disconnected from the
vacuum system, purged with dry nitrogen and oil should be exchanged too. The
inlet and exhaust ports of the pump must be blanked off using the shipping seals
which are included upon delivery of the pump.
The gas ballast must be closed and if the pump is to be shelved for a longer peri-
od of time it should be sealed in a plastic bag together with a desiccant
(Silicagel).
If the pump has been shelved for more than one year, standard maintenance
must be run and oil must be exchanged too before the pump is put into service
again. We recommend that you contact the service from Leybold.
NOTICE
CAUTION
NOTICE

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Installation
3 Installation
3.1 Setting up
It is essential to observe the following instructions step by step to ensure a safe
start-up. Start-up may only be conducted by trained specialists.
The SOGEVAC® can be set up on any flat, horizontal surface. Under the four
feet, there are metric threaded holes for securing the pump.
The oil level cannot be read properly if the pump is tilted. Pump risks to run dry.
The ambient temperature should be between 12°C (55°F) and 40°C (104°F) de-
pending on oil type. By modifying the pump or changing the oil type, the pump
can be run at a lower ambient temperature. Please consult us about this.
To ensure adequate cooling of the pump, leave enough space at the air intake
and exhaust points, so as for access and maintenance. Make sure to keep the
air intake of motor clear.
3.2 Conforming Use
SOGEVAC® pumps are designed for pumping of inert gases in the range of rough
vacuum, between atmospheric pressure and ultimate pressure of the pump.
When removing condensable vapors, a gas ballast valve must be installed.
SOGEVAC® pumps are not designed for pumping of aggressive, corrosive,
flammable or explosive gases. By presence of aggressive, flammable, corrosive
or explosive gases, contact Leybold.
These pumps are not designed for working in flammable or explosive environ-
ment. In case of doubt, contact Leybold for the ATEX pump range.
The pumps are not suitable for pumping liquids or media which contain dust.
Corresponding protective measures must be introduced. In case of doubt, contact
Leybold.
Before pumping greater than atmospheric concentrations of oxygen (> 20 %) or
other highly reactive gases, the pump must be modified, degreased and a special
oil (such as PFPE) must be used.
Take adequate safety precautions. Contact Leybold for important safety instruc-
tions.
NOTICE

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NOTICE
3.3 Connection to system
The standard pump is not suitable for installation in explosion hazard areas.
Please contact us, when you are planning such an application. Before installing
the pump you must reliably disconnect it from the electrical power supply and pre-
vent the pump from running up inadvertently. The pump must only be installed by
suitably qualified and trained personnel.
Observe all safety regulations.
Intake Side
The pump has an internally-threaded intake flange. Using suitable connecting
elements (see Fig. 3 and Section 1.5), the pump can be connected to the vacuum
system.
The cross-section of the intake line should be at least the same as the intake port.
If the intake line is too narrow, it reduces the pumping speed. We recommend
applying either LOCTITE or TEFLON tape to the screwed unions so that they are
vacuum-tight (especially if gases are dangerous).
Pump should be connected to inlet line without any tension. Use flex lines or
pipe unions in your inlet and exhaust lines so that they can be easily removed
for pump maintenance.
The maximum pressure at the inlet may not exceed atmospheric pressure
(about 1013 mbar). Never operate the pump in the presence of over pressures
at its intake.
Type of materials used for mounting of canalizations should take care of
pumped gases. It is the same for its tightness.
If the process gas contains dust or particles, it is absolutely essential to install a
dust filter in addition to the dust trap supplied (see Section 1.5). We recommend
to install the dust filter horizontally using the T-piece (3/13) or the elbow (3/14).
This ensures that when removing the filter, no particle falls into the intake port.
You have a choice of four cartridges for the optional inlet filters. The metal car-
tridge prevents solid particles such as paper or plastics from entering the pump ;
the paper and polyester cartridges remove small particles such as dust and pow-
der down to one micron ; the activated carbon cartridge absorbs chemical vapors
of acids, solvents, etc. If the carbon cartridge was stored in a damp place, bake it
for 2 hours at 212°F (100°C) before use.
When pumping vapors, we recommend installing condensate traps or condensers
on the intake side (see Section 1.5).
By pumping of dangerous gases, inlet line must be tight.
No particles or liquids may enter in the pump.
Installation

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Exhaust Side
The SOGEVAC® have integrated exhaust filters which, even at a high gas
throughput, trap the oil mist and guarantee exhaust gas free of oil mist. If the ex-
haust filters are clogged, pressure relief valves opens and the filters are by-
passed. As a result, the proportion of oil in the exhaust gas as well as the pump’s
oil consumption rise. Installing new exhaust filters will correct this problem. (See
Section 5.10)
This situation must be resolved by changing the exhaust filters. It is under utiliz-
er's responsibility to assure maintenance on materiel to avoid any trespasse-
ment of the limits authorized by regulations.
Check in the individual case whether an exhaust line is necessary and/or pre-
scribed. Volatile substances can pass through the filter. Depending on the pro-
cessed gas, we recommend connecting an exhaust line ; this is always neces-
sary when the exhaust gases are dangerous.
Observe the safety precautions that apply to your application and process gases.
The pump’s exhaust port also has an internal thread (ET3/18). A hose can be
connected via a suitable screw-in nipple (see Fig. 3 and Section 1.5).
The cross-section of the exhaust line should be at least the same as the pump’s
exhaust port. If the exhaust line is too narrow, overpressure may occur in the
pump.
Before installing the exhaust line, remove the exhaust-flange plate and ensure
that the exhaust demister(s) are secured tightly in place. They sometimes loosen
during shipping and installation. A loose demister results in exhaust smoke during
start-up and operation.
Install the exhaust line with a downward slope to prevent condensate from flowing
back into the pump. If this is not possible, we strongly recommend installing a
condensate trap (see Section 1.6). if several pumps are connected to one ex-
haust line, ensure an adequate cross-section and a non-return valve at the ex-
haust of each pump.
Never operate the pump with a blocked or restricted exhaust line. Before start-
up ensure, that any blinds or similar shut-off devices in the exhaust line on the
pressure side are opened and that the exhaust line is not obstructed. Such re-
strictions reduce the pumping speed, increase the temperature, and could over-
load the motor or cause a dangerous overpressure in the pump. Excessive
pressure in the pump could damage the seals, blow out the sight glass, or de-
stroy the pump housing. In addition to this explosion hazard, excessive back-
pressure can result in hazardous process gases leaking out of the pump. If you
are purging the oil casing with inert gas, limit the inert-gas flow. Contact
Leybold for recommendations.
When pumping dangerous gases, exhaust line must be tight.
The maximum exhaust pressure must not exceed 1,15 bar (absolute). Also reli-
ably prevent the occurrence of any blockage in the exhaust line. Exhaust filter,
accessories and the tubing must be rated according to the maximum through-
put. The maximum throughput is equivalent to the pumping speed of the
pumps.
NOTICE
WARNING
Installation

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DANGER
3.4 Electrical Connections
(See fig. 4)
Ensure that incoming power to the pump is off before wiring the motor or alter-
ing the wiring. Electrical connections must be done by a qualified electrician in
accordance with the applicable safety regulations.
Wire the motor for the correct supply voltage via connections in the junction box.
See the wiring diagram on the motor or in the junction box. For proper connection,
a suitable motor protection switch must be used. Set the switch in accordance
with the rating on the motor nameplate. The switch should be of class 10 at least.
After connecting the motor and every time you alter the wiring, check the direction
of rotation. Observe the direction arrow on the motor hood. During the check, the
intake port should be open. If the direction of rotation is wrong, oil may be ejected
out the intake port. The vacuum system may be pressurized.
Don’t use the motor fan for checking the rotation direction. The motor fan rotates
too fast to clearly check during operation ; when it slows during shut-down, it re-
serves its direction.
Turn off the power supply, and interchange two phases of the connection, if you
need to correct the direction of rotation.
We recommend checking the direction of rotation with a phase-sequence indica-
tor.
Prolonged running of the motor in the wrong direction of rotation will damage the
pump!
A thermal overload switch is available as an accessory. It cuts out the pump if a
specific temperature is exceeded and/or triggers a warning signal.
If any security switch or electrical defect cuts out the pump, re-start-up of the
pump is only possible by hand action.
Installation
Fig. 4

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WARNING
Installation
3.5 Start-up
Oil for the first filling is supplied with the pump.
Before switching on, always make sure that the pump contains enough oil. The
normal oil level is in the middle of sight glass.
If oil has to be added, unscrew the oil-fill plug, add oil and screw the plug firmly
back in.
The SOGEVAC® is designed for normal startup at temperatures over 0°C (32°F)
(as per PNEUROP), depending on used oils.
To avoid overloading the motor, do not start the pump more than six times within
one hour. If frequent starts are needed, the pump should run continuously and be
linked to the vacuum vessel by means of a valve. In that case, regulation will be
made by the valve and not by start/stop of the pump. With the valve closed, the
pump consumes little energy.
Before starting the pump ensure that the attached accessories meet the re-
quirements of your application and that safe operation is ensured.
Never expose part of the body to the vacuum. There is a danger of injury. Nev-
er operate the pump with an open and thus accessible inlet. Vacuum connec-
tions as well as oil filling and oil draining openings must not be opened during
operation of the pump.
The safety regulations which apply to the specific application in each case must
be observed. This applies in particular to installation, operation and mainte-
nance (servicing) as well as waste disposal and transportation.
Do not lay the hand on the intake to check vacuum.
Exposure of a part of the body to the vacuum result in a rush of blood in the
exposed part.

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4 Operation
The SOGEVAC® can pump gases and vapors, provided that the gas ballast valve
is installed and open and the pump has reached its operating temperature.
Contact Leybold for important safety instructions before pumping greater than
atmospheric concentrations of oxygen or other highly reactive gases. The pump
must be degreased, modified, and special inert oil must be used for pumping oxy-
gen. Also ATEX variants are available for pumping explosive gases.
The motor manufacturer guarantees a maximum of 6 starts per hour. To avoid
exceeding 6 starts per hour, run the pump continuously and regulate the vacuum
in your system with a pilot valve.
Pump in operation is hot and some surfaces could reach a temperature higher
than 80°C (176°F). There is a risk of burn by touching. Take note of warning
labels on the pump.
4.1 Pumping of Non-condensable Gases
If the process contains mainly permanent gases, the SOGEVAC® can be operat-
ed without gas ballast, provided that the saturation vapor pressure at operating
temperature is not exceeded during compression.
If you do not know the composition of the gases to be pumped, and if you can’t
rule out the possibility of condensation, run the pump with gas ballast valve open
in accordance with Section 4.2.
4.2 Pumping of Condensable Gases and Vapors-Using gas ballast.
The pumps with gas ballast valves are delivered with the gas ballast valve open.
The SOGEVAC® SV300 FP can be equipped with following types of gas ballasts:
■Standard gas ballast. This gas ballast corresponds to the most important part
of applications .
■Gas ballast “big flow” as a variant or accessory is intended for the applications
where more vapours of condensable gases could come into the pump.
■Gas ballast "small flow" for pumping on applications where only few vapours
are to be pumped and where the ultimate pressure with open gas ballast is
important.
■Gas ballast with E.M. valve (Part. No. upon request) This kit is intended for
being mounted on pumps on which the gas ballast can be driven by an electro-
magnetic valve applied at 24 VDC.
CAUTION
Operation