The manufacturer is not responsible for damage if
you do not follow all of this documentation.
2.1 Warning instruction markings
WarningDanger levelConsequences if not obeyed
DANGER
WARNING
CAUTION
NOTICE
2.2 General
immediately imminent dangerDeath, severe bodily injury
possible imminent dangerDeath, severe bodily injury
possible hazardous situationSlight bodily injury
possible hazardous situationMaterial damage
These operating instructions contain basic instructions for installation, commissioning, maintenance
and inspection work which must be obeyed to ensure the safe operation of the machine and prevent
physical and material damage.
The safety instructions in all sections must be taken
into consideration.The operating instructions must
be read by the responsible technical personnel/
operator before installing and commissioning / and
must be fully understood. The contents of the operating instructions must always be available on site
for the technical personnel / operator. Instructions
fi xed directly onto the machine must be obeyed and
must always remain legible. This applies for example
to:
• Symbols for connections
• Data and motor data plate
• Instruction and warning plates
The operator is responsible for observing local regulations.
The machine must only be operated in such areas
as are described in the operating instructions:
• only operate the machine in a technically perfect
condition
• do not operate the machine when it is only partially assembled
• the machine must only be operated at an ambient temperature and suction temperature of
between 5 and 40°C.
Please contact us for temperatures outside this
range.
• the machine may convey, compress or extract
the following media:
• all non-explosive, non-infl ammable, non-ag-
gressive and non-poisonous dry gases and
gas air mixtures
• also to feed in extremely damp gases. The
water vapour compatibility is very high.
2.4 Unacceptable operating modes
• extracting, conveying and compressing explosive, infl ammable, aggressive or poisonous media, e.g. dust as per ATEX zone 20-22, solvents
as well as gaseous oxygen and other oxidants,
water vapour, liquids or solid materials
• using the machine in non-commercial plants if
the necessary precautions and protective measures have not been taken in the plant
• installing in environments that are at risk of explosions
• using the machine in areas with ionising radiation
• back pressures on the outlet side:
S-VSI (01) - (07) > + 0,2 bar
S-VSI (12) > + 30 mbar
• Ensure that people entrusted with working on
the machine have read and understood these
operating instructions before starting work,
particularly the safety instructions for installation,
commissioning, maintenance and inspection
work.
• Manage the responsibilities, competence and
monitoring of staff
• all work must only be carried out be technical
specialists:
• Installation, commissioning, maintenance
and inspection work
• Working with electricity
• personnel being trained to work on the ma-
chine must be supervised by technical specialists only
2.6 Safety-conscious work
The following safety regulations apply in addition
to the safety instructions and intended use listed in
these instructions:
• Accident prevention regulations, safety and operating regulations
• the standards and laws in force
2.7 Safety notes for the operator
• hot parts of the machine must not be accessible
during operation or must be fi tted with a guard
• People must not be endangered by the free
extraction or discharge of pumped media
• Risks arising from electrical energy must be
eliminated
2.8 Safety instructions for installing, commissioning and maintenance
• The operator will ensure that any installation,
commissioning and maintenance work is carried out by authorised, qualifi ed specialists who
have gained suffi cient information by an in-depth
study of the operating instructions.
• Only work on the machine when it is idle and
cannot be switched on again
• Ensure that you follow the procedure for decommissioning the machine described in the operating instructions.
• Fit or start up safety and protective devices
again immediately after fi nishing work.
• Conversion work or modifi cations to the machine are only permissible with the manufacturer’s consent.
• Only use original parts or parts approved by the
manufacturer. The use of other parts may invalidate liability for any consequences arising.
• Keep unauthorised people away from the machine
2.9 Guarantee conditions
The manufacturer’s guarantee or warranty will no
longer apply in the following cases:
• Improper use
• Not complying with these instructions
• Operation by insuffi ciently qualifi ed staff
• Using spare parts that have not been approved
by Gardner Denver Schopfheim GmbH
• Unauthorised modifi cations to the machine or
the accessories supplied by Gardner Denver
The S-VSI model range has a connecting thread on the suction side and an exhaust silencer on the pressure
side.
The TWISTER S-VSI is a double shaft screw vacuum pump in which two parallel screw rotors roll off against
each other without touching and dry. The gas to be fed in is here enclosed in the pump’s suction chamber
and compressed by the rotary movement of the screw rotors in the direction of the outlet. The gas sucked
in is gradually compressed to atmospheric pressure. The counter-rotating screw rotors are synchronised by
a gear pair in the gearbox. The synchronous gearbox gear wheels and the bearings are lubricated with oil.
These components are in a gearbox that also contains the oil supply. Oil conveying devices always ensure
that the bearings and the gear wheels are suffi ciently supplied with oil at all permissible speeds.
The gearbox and the compression chamber are separated from each other by special seals. The gearbox is
sealed from the outside with shaft seals and O rings, the compressor chamber with piston rings. Between
the two there is also another atmospherically ventilated area that can be loaded with sealing gas (special
version).
The TWISTER S-VSI is driven by standard fl anged three phase motors via a coupling (with an elastomer
component).
The screw vacuum pumps are suitable for the evacuation of closed systems or for a continuous vacuum
within the following intake pressure ranges: 0.1 to 1000 mbar (abs.).
They are also particularly suitable for feeding in extremely damp gases. The water vapour compatibility is
very high.
3
The maximum pumping capacity with free suction is 110 m
/h and 320 m3/h at 50 Hz. Data sheet D 832
shows the dependency of the pumping capacity on the intake pressure.
If the unit is switched on more frequently (at regular intervals of about 10 times an hour) or at higher
ambient temperatures and intake temperatures, the
excess temperature limit of the motor winding and
the bearings may be exceeded.Please contact the
manufacturer should the unit be used under such
conditions.
If it is installed in the open air the unit must be protected from environmental infl uences, (e.g. by a protective roof).
ACHTUNG
The srew vacuum pump S-VSI 300 (12) may only
be operated in continuous operation S1.
When evacuating closed systems the volume to
be evacuated must be max. 80 l.
With continuous fl ow cooling water fl ows continuously through the cavity in the double walled compressor
housing.
For safety reasons the cooling system should be fi tted with a solenoid valve, temperature and a fl ow switch.
The assembly group continuous fl ow water cooling (Fig. 5) as well as a special control unit are obtainable.
U5U4U
C
U
6
U
2
Fig. 5 Assembly group continuous fl ow water
cooling (option)
1
C Cooling water inlet G
D Cooling water outlet G 1/
/
2
2
U1 Vent valve
Temperature control
U
2
U
Safety valve
3
U4 Flow control device
U5 Solenoid valve
U6 Dirt trap
U
3
1
D
Temperature control
Monitors the temperature of the cooling water.
Factory-provided adjustment: T
= 50 °C
max
Safety valve
Protect from an incorrect operating pressure of the
cooling water > 6 bar.
Flow control device
Monitors the fl ow rate of the cooling water.
Factory-provided adjustment: 400 l / h
Solenoid valve
Regulate the cooling circuit.
Control voltage: 24 V DC
Dirt trap
Protect the armatures and the cooling circuit from
impurities in the incoming cooling liquid.
Analyse the signals of the monitoring devices and
control motor as well as solenoid valve.
F
Y
F
E
Fig. 7 Circulation cooling system (option)
C2 Cooling water inlet G 3/
D2 Cooling water outlet G 3/
4
4
E Cooling air inlet
F
Cooling air outlet
Y Display
C
2
D
2
580 mm
650 mm
580 mm
The cooling circuit is fi tted with thermostat-controlled three-way valves. This enables diversion of water
past the heat exchanger during the pump start-up
phase. During operation of the pump, a temperature
switch monitors the water temperature and a fl ow
switch controls the fl ow rate. The cooling system is
equipped with a temperature and fl ow switch.
Weight / operating weight101 / 131 kg
Tank capacity
30 l
Further detailed technical data on request
The Operating Instructions for this cooling sys-
• Suffi cient room for installing and removing pipes
and for maintenance work, particularly for installing and dismantling the machine
• No external vibration effects
• Do not suck any hot exhaust air from other machines into the cooling system.
The oil fi lling point (Fig. 2/H, H
water inlet (Fig. 2/C) and cooling water outlet (Fig. 2/D) must be easily accessible.
The cooling air inlets (Fig. 2/E) and cooling air outlets (Fig. 2/F) must be at least 30 cm away from
adjacent walls. Cooling air coming out must not be sucked in again.
Material damage resulting from the forces and
torques of the pipes on the unit being too high.
Only screw pipes in by hand.
The pumping capacity of the vacuum pump is
reduced if the suction pipe is too narrow and/or
too long.
b) The discharged air can be blown out through
the exhaust silencer (ZSZ) at (Fig. 2/B, 3/B) or
conducted away using a hose or a pipe.
NOTICE
Length of the connection pipes
With connection pipes that have the same pipe cross
section as the machine connection and are more than
3 m long, a non-return valve (ZRK) especially for the
purpose must be installed in order to avoid reverse
operation when the machine has stopped.
The air vent (Fig. 2/B) must not be closed or
restricted.
Counter pressures on the outlet side are only
permissible up to:
b) When connecting a circulating cooling system to
an external cooling system, it must be fi lled with
cooling fl uid.
NOTICE
Rinse the pipe network on the customer side
before connecting it
A fi lter element must be installed in the pipe network to prevent foreign bodies getting into the heat
exchanger.
Risk of frost damage in the cooling system
Freezing cooling water may lead to extensive damage to the machine. Therefore mix the cooling water
with at least 10 % of anti-freeze. The amount of
anti-freeze used must be adjusted to the ambient
climatic conditions.
Handling anti-freeze
Anti-freeze may contain harmful ingredients, such
as ethylene glycol that could damage your health,
especially if swallowed.
a) Fill the lubricating oil (for suitable sorts see
„Maintenance“) for the gear teeth and the bearings into the oil fi lling points (Fig. 2/H, 2/H
to the middle of the inspection glasses (Fig. 2/
I, 2/I1).
b) Close the oil fi lling points.
5.6 Connecting the motor
) up
1
DANGER
Danger of death if the electrical installation has
not been done professionally!
The electrical installation may only be done by a specialist electrician observing EN 60204. The operating
company has to provide the main switch.
a) The motor‘s electrical data is given on the data
plate (Fig. 2/N) or on the motor data plate (Fig. 2/
P1). The motors comply with DIN EN 60034
and are in protection class IP 55 and insulation
class F. The appropriate connection diagram is
located in the motor‘s terminal box (not for the
plug connection version). The motor data must
be compared with the data of the existing mains
network (current type, voltage, network frequency, permitted current value).
b) Connect the motor via the plug connection or
the motor protection switch (for safety reasons,
a motor protection switch is required and the
connecting cable must be installed via a cable
fi tting to provide strain relief).
We recommend using motor protection switches
with delayed switch off, depending on possible
excess current. Temporary excess current may
occur when the machine is started cold.
NOTICE
Power supply
The conditions at the installation location must match
the information on the motor data plate.
Without derating the following is permissible:
May lead to severe or fatal injuries. Therefore be
sure to obey the safety instructions.
CAUTION
Hot surfaces
When the machine is at operating temperature the
surface temperatures on the components (Fig. 2/
Q) may go above 70°C.
You must avoid touching the hot surfaces (marked with warning plates)!
CAUTION
Noise emission
The highest noise pressure levels measured as
per EN ISO 3744 are given in Section 9.
When spending a long time in the vicinity of the
running machine use ear protectors to avoid permanent damage to your hearing.
CAUTION
Do not put your hands onto the suction connection to check the suction
NOTICE
Do not operate without water cooling with a
suffi cient amount of cooling water
The power of the machine lessens and damage may
occur to the machine.
the rotation direction arrow (Fig. 2/O) on the motor fl ange.
a) Start the motor briefl y (max. two seconds) to
check the direction of rotation. When looking at
the motor fan, it must rotate clockwise.
NOTICE
Incorrect direction of rotation
Operating in the wrong direction of rotation leads
to damage to the machine.
Use a phase sequence indicator to check the direction of rotation (anti-clockwise rotating fi eld).
6.2 Decommissioning/ storing
Stop the machine
a) Switch the machine off.
b) If available close the cut off device in the suction
and pressure pipe.
c) Disconnect the machine from the electricity
source.
d) Depressurise the machine: Open the pipes
slowly
The pressure reduces slowly.
e) Remove the pipes and hoses.
f) Seal the connections for suction and discharge
nozzles with adhesive foil.
g) Discharge cooling water (Fig. 2/D1, 3/D1).
see also Section 3.2.1, Page 11
6.3 Re-commissioning
a) Check the condition of the machine (cleanliness,
cabling etc.).
For installation see Section 5 Page 18
For commissioning see Section 6.1 Page 23
Before maintenance work disconnect the machine
by pressing the main switch or unplugging it and
ensure that it cannot be turned on again.
WARNING
Hot surfaces and equipment
During maintenance work there is the danger of
getting burnt on hot components (Fig. 2/Q) and
by the machine lubricating oil.
Wait for the machine to cool down.
7.1 Ensuring operational safety
Regular maintenance work must be carried out in order to ensure operational safety.
Maintenance intervals also depend on the operational demands on the machine.
With any work observe the safety instructions described in Section 2.8 “Safety notes for installation, com-
missioning and maintenance”.
The whole unit should always be kept in a clean condition.
I, I1 Oil sight glass
K, K1 Oil discharge point
M Oil recommendation plate
H
1
K
I
K
1
M
I
1
NOTICE
Always change the oil when the machine is at
operating temperature and in an atmospherically
ventilated area.
If it is not completely emptied the amount that can
be refi lled is reduced.
The waste oil must be disposed of in compliance with
the local environmental protection regulations.
If you change the type of oil, empty the oil tank
completely.
The oil level in the sight glasses (Fig. 8/I, I1) must be
checked every month.
When refi lling with oil the machine must be switched
off and vented to atmospheric pressure. With clean
operations the oil must be changed after every
7,500 operating hours.
The oil viscosity must comply with ISO VG 150 as
per DIN 51519.
Designation as per DIN 51502: CLP HC 150.
GEAR-LUBE 150 or equivalent oils by other manufacturers (also see oil recommendation plate (Fig. 8/
M)).
A Vacuum connection
U Gas ballast valve (S-VSI (12))
f Mesh fi lter
U
NOTICE
Insuffi cient maintenance on the air fi lter
The power of the machine lessens and damage may
occur to the machine.
The mesh fi lter (Fig. 9/f) built into the vacuum connection (Fig. 9/A) must be cleaned by washing
respectively blowing it out (depending on the level
of contamination of the suctioned medium) or replaced.
The pumps S-VSI (12) work with a gas ballast valve
(Fig. 9/U).
The inbuilt fi lter disc Fig. 10/f
) and micro fi lter discs
3
Fig. 10/f4) must be cleaned more or less often by
purging depending on how dirty the medium fl owing through is. By undoing the countersunk screw
(Fig. 10/g
) and removing the plastic cover (Fig. 10/
1
h1) the fi lter parts can be removed for cleaning.
Re-assemble in reverse order.
f
f
4
4
1
Fig. 11 Blowing out the mesh fi lter
1 Mesh fi lter
2
Compressed air
WARNING
Danger of injury when dealing with compressed air
When blowing through with compressed air, solid
particles may be carried along or powder dust swirling around may cause injury to the eyes.
Therefore, when cleaning with compressed air always
wear goggles and a dust mask.
The coupling sprocket (Fig. 12/k) is subject to wear
and must be checked regularly (at least once a year).
CAUTION
k
n
Defective coupling sprocket
Defective sprockets may lead to the rotor shaft
breaking.
To check the coupling switch the motor (Fig. 12/m)
off and ensure that it cannot be switched on again.
Undo the screws (Fig. 12/s5) on the motor fl ange.
Remove motor and the coupling half on the motor side (Fig. 12/q) from the motor fl ange housing
(Fig. 12/n) axially and suspend with a lifting device.
If the sprocket (Fig. 12/k) is damaged or worn, then
replace it.
NOTICE
Frequent starting up and high ambient temperature
The service life of the sprocket (Fig. 12/k) is reduced
as a result of this.
7.2.4 Cooling
Re-assemble in reverse order.
Check the cooling water system and the pipes
monthly.
Continuous fl ow cooling
The dirt trap (Fig. 5/U6) must be cleaned periodically,
depending on the cooling liquid quality. To do this
unscrew the lock screw and clean the built-in mesh
fi lter.
disconnected from the mains by a qualifi ed
electrician so that it cannot be started up again
accidentally. For repairs use the manufacturer,
its branch offi ces or authorised dealers. Please
contact the manufacturer for the address of the
service centre responsible for you (see Manufacturer‘s address).
NOTICE
For each machine that is sent to an Elmo Rietschle
Service centre for inspection, maintenance or repair,
a fully completed, signed declaration of harmlessness must be enclosed.
The declaration of harmlessness is part of the
supplier‘s documentation.
Fig. 13 Clearance certifi cate 7.7025.003.17
b) After a repair or re-commissioning, the actions
listed under „Installation“ and „Commissioning“
must be carried out as for initial commissioning.
E 832/1 ➝ S-VSI 100 (01)
E 832/2 ➝ S-VSI 300 (01)
E 832/3 ➝ S-VSI 300 (11)
• Download the pdf fi le:
http://www.gd-elmorietschle.com
➝ Downloads
➝ Product Documents
➝ S-Series ➝ Spare Parts
• Parts subject to wear and gaskets are indi-
cated separately on the list.
• Web site:
http://www.service-er.de
• Select the type, size and design.
NOTICE
Fig. 14 Spare parts list (example)
Only use original spare parts or parts approved by
the manufacturer. The use of other parts may lead to
malfunctions and invalidate liability or the guarantee
for any consequences arising.
Compressors and vacuum pumps — Safety requirements — Part 1:
Compressors
Vacuum pumps
These declarations of conformity are invalid when the machine has been modified without prior approval by us and the approval has been documented in writing.
Name and address of the EC person in
charge for documentation
Roggenbachstr. 58, 79650 SchopfheimPhone: +49/(0)7622/392-0 Fax: +49/(0)7622/392-300
Repairs and/or maintenance of vacuum pumps and components will only be carried out if a declaration has been
filled in correctly and completely
.
If not, the repair work cannot be started and delays will result.
This declaration must only be filled in and signed by authorised qualified staff
2. Reason for the submission1. Type of vacuum pumps/ components
Type description:
Machine number
Order number:
Delivery date:
3. Condition of vacuum pumps/ component
4. Contamination of the vacuum pumps
Was this being operated?YES NO components when in use
Which lubrication was used?ToxicYES NO
CorrosiveYES NO
Was the pump/ component emptied?Microbiological*)YES NO
(Product/Consumables)YES NO Explosive*)YES NO
Has the pump/ component been cleaned and decontaminaRadioactive*)YES NO
otherYES NO
YES
Cleaning agent:
Cleaning method:
*) Microbiological, explosive or radioactively contaminated vacuum pumps/ components will only be accepted
with proof that they have been cleaned properly.
Type of toxic substance or process-related, dangerous reaction products with which the vacuum pumps/
components came into contact:
Trade name, manufacturer's Chemical Hazard
product namenameclasssubstances are releasedaccidents
1
2
3
4
Personal protection measures:
ction to be taken if toxic First aid in the event of
Hazardous decomposition products when subjected to thermal load
YES NO
Which?
5. Legally binding declaration
We swear that the information in this declaration is accurate and complete and that I, the undersigned, am in a
position to judge this. We are aware that we are liable to the contractor for damage caused by incomplete and
inaccurate information. We undertake to release the contractor from any damage claims from third parties arising
from incomplete or incorrect information. We are aware that, regardless of this declaration, we are directly liable
to third parties including in particular the contractor's staff entrusted with handling or repairing the product
Company:
Street:Post code/ Town:
Phone:Fax:
Name (in capitals)Position: