Schmalz EVE-OG-25 F User manual

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Installation and
Operation Instructions
EVE-OG-25 –40 F
Owner's manual was created in the German language.
Please retain for future use!

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Inhaltsverzeichnis
1. Preface....................................................................................2
2. Technical Data........................................................................2
3. Product Description ...............................................................3
Use..........................................................................................3
Principle of Operation...............................................................3
Oil Circulation...........................................................................3
Cooling.....................................................................................4
Start Controls...........................................................................4
4. Safety ......................................................................................4
Intended Use............................................................................4
Safety Notes ............................................................................4
Emission of Oil Mist..................................................................4
Noise Emission ........................................................................5
5. Transport.................................................................................5
Transport in Packaging ............................................................5
Transport without Packaging....................................................5
6. Storage....................................................................................5
Short-term Storage...................................................................5
Conservation............................................................................5
7. Installation and Commissioning............................................6
Installation Prerequisites ..........................................................6
Mounting Position and Space ..............................................6
Suction Connection..............................................................6
Gas Discharge.....................................................................6
Installation................................................................................7
Mounting..............................................................................7
Connecting Electrically.........................................................7
Connection Scheme Three-Phase Motor.............................7
Connecting Lines/Pipes.......................................................7
Filling Oil..............................................................................8
Recording of Operational Parameters..................................8
Operation Notes.......................................................................8
Use......................................................................................8
Oil Return............................................................................9
Conveying Condensable Vapours........................................9
8. Maintenance............................................................................9
8.1 Maintenance Schedule.......................................................9
Checking the Oil.....................................................................10
Checking the Level............................................................10
Topping up Oil...................................................................10
Checking the Colour of the Oil ...........................................10
Oil Life....................................................................................10
Oil and Oil Filter Change........................................................10
Draining Used Oil...............................................................10
Flushing the Vacuum Pump...............................................11
Replacing the Oil Filter.......................................................11
Filling in Fresh Oil..............................................................11
Exhaust Filter.........................................................................11
Checks during Operation...................................................11
Assessment.......................................................................12
Change of the Exhaust Filter..............................................12
Removing the Exhaust Filter..............................................12
Inserting the Exhaust Filter ................................................12
9. Overhaul................................................................................12
10. Removal from Service........................................................13
Temporary Removal from Service..........................................13
Recommissioning...................................................................13
Dismantling and Disposal.......................................................13
11. Troubleshooting .................................................................14
12. Exploded View ....................................................................19
13. Spare Parts .........................................................................20
14. Spare Parts Kits..................................................................21
15. Accessories ........................................................................21
16. Oil ........................................................................................22
17. EC-Declaration of Conformity............................................23
17. Schmalz world wide............................................................24
1. Preface
Congratulations on your purchase of the Schmalz vacuum pump.
With watchful observation of the field’s requirements, innovation
and steady development Schmalz delivers modern vacuum and
pressure solutions
worldwide.
These operating instructions contain information for
–product description,
–safety,
–transport,
–storage,
–installation and commissioning,
–maintenance,
–overhaul,
–troubleshooting and
–spare parts of the vacuum pump.
For the purpose of these instructions, “handling” the vacuum pump
means the transport, storage, installation, commissioning,
influence on operating conditions, maintenance, troubleshooting
and overhaul of
the vacuum pump.
Prior to handling the vacuum pump these operating
instructions shall be read and understood. If anything
remains to be clarified please contact your Schmalz
representative!
Keep these operating instructions and, if applicable, other
pertinent operating instructions available on site.
2. Technical Data
Nominal suction capacity
(50Hz/60Hz)
m³/h
EVE-OG-25 F: 25/30
EVE-OG-40 F: 40/48
Suction capacity at 1 mbar
(50Hz/60Hz)
m³/h
EVE-OG-25 F: 23/27
EVE-OG-40 F: 35/41
Ultimate pressure
abs.
hPa (=mbar)
0,1
Motor nominal rating
(50Hz/60Hz)
kW
EVE-OG-25 F: 1,0/1,2
EVE-OG-40 F: 1,4/1,7
Motor nominal speed
(50Hz/60Hz)
min–1
1500/1800
Sound pressure level
(ISO 2151) (50Hz/60Hz)
dB (A)
EVE-OG-25 F: 60/63
EVE-OG-40 F: 63/66
Water vapour tolerance
max.
hPa (=mbar)
40
Water vapour capacity
l/h
EVE-OG-25 F: 0,9
EVE-OG-40 F: 1,1
Operating temperature
(50Hz/60Hz)
°C
EVE-OG-25 F: 80/85
EVE-OG-40 F: 82/90
Ambient temperature range
°C
see „Oil“
Ambient pressure
Atmospheric pressure
Oil quantity
l
1,0
Weight approx.
(50Hz/60Hz)
kg
EVE-OG-25 F: 36
EVE-OG-40 F: 42

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3. Product Description
Use
The vacuum pump is intended for the suction of air and other
dry, non-aggressive, non-toxic and non-explosive Gases.
Conveying media with a lower or higher density than air leads to
an increased thermal and/or mechanical load on the vacuum
pump and is permissible only after prior consultation with
Schmalz.
Permissible temperature range of the inlet gas: see “Oil”,
“Ambient temperature range”
In case the vacuum pump is equipped with a gas ballast
(optional) water vapour within the gas flow can be tolerated
within certain limits (page 9: Conveying Condensable
Vapours). The conveyance of
other vapours shall be agreed upon with Schmalz.
The vacuum pump is intended for the placement in a non-
potentially explosive environment.
Version with float valve (j, 200) and oil return line:
The vacuum pump is thermally suitable for continuous operation
(100 percent duty).
Version with oil return valve (f, 280):
The vacuum pump is thermally suitable for continuous operation
(observe the notes with regard to the oil recirculation: page 4:
Oil Circulation; page 9: Oil Return).
The vacuum pump is ultimate pressure proof.
Principle of Operation
The vacuum pump works on the rotating vane principle.
A circular rotor (s, 14) is positioned centrically on the shaft of the
vacuum pump. The shaft of the vacuum pump is driven by the
drive motor shaft by means of a flexible coupling (310).
The rotor (s, 14) rotates in an also circular, fixed cylinder (t, 1),
the centreline of which is offset from the centreline of the rotor
such that the rotor and the inner wall of the cylinder almost touch
along a line.
Vanes (r, 22), sliding in slots in the rotor, separate the space
between the rotor and the cylinder into chambers. At any time
gas is sucked in and at almost any time ejected. Therefore the
vacuum pump works almost pulsation free.
In order to avoid the suction of solids, the vacuum pump is
equipped with a screen (261) in the suction connection.
In order to avoid reverse rotation after switching off, the vacuum
pump is equipped with a non-return valve (257).
Note: This valve shall not be used as a non-return valve or shut-
off valve to the vacuum system and is no reliable means to
prevent suction of oil into the vacuum system while the vacuum
pump is shut down.
In case the vacuum pump is equipped with a gas ballast
(optional):
Through the gas ballast (440) a small amount of ambient air is
sucked into the pump chamber and compressed together with
the process gas. This counteracts the accumulation of
condensates from the process gas inside the vacuum pump (
page 9: Conveying Condensable Vapours).
The gas ballast line is equipped with a sinter metal filter.
Gas ballast version with ball valve:
The gas ballast line can be closed partially or completely by
means of a ball valve.
In order to improve the operating characteristics the outlet of the
pump chamber is equipped with a spring loaded valve (q, 159).
Oil Circulation
The vacuum pump requires oil to seal the gaps, to lubricate the
vanes (r, 22) and to carry away compression heat.

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The oil reservoir is located on the pressure side of the vacuum
pump (i.e. high pressure) at the bottom of the bottom chamber of
the oil separator (o, 75).
The feed openings are located on the suction side of the vacuum
pump (i.e. low pressure).
Forced by the pressure difference between pressure side and
suction side oil is being drawn from the oil separator (o, 75)
through the oil supply lines (210) and injected on the suction
side.
Together with the sucked gas the injected oil gets conveyed
through the vacuum pump and ejected into the oil separator (o,
75) as oil mist.
Oil that separates before the exhaust filter (p, 120) accumulates
at the bottom of the bottom chamber of the oil separator (o, 75).
Oil that is separated by the exhaust filter (p, 120) accumulates at
the bottom of the upper chamber of the oil separator (o, 75).
The flow resistance of the exhaust filters (p, 120) causes the
inside of the exhaust filters (which is connected to the bottom
chamber of the oil separator) to be on a higher pressure level
than the outside of the
exhaust filters (i.e. the upper chamber of the oil separator).
Because of the higher pressure in the bottom chamber it is not
possible to let oil
that drips off the exhaust filters simply flow down to the bottom
chamber.
Version with float valve and oil return line to the suction
connection (j, 200):
Therefore the oil that accumulates in the upper chamber is
sucked through the float valve (j, 200) and the oil return line (j,
195) to the suction connection (250).
Version with oil return valve (f, 280):
At continuous operation this would cause the entire supply of oil
to accumulate at the bottom of the upper chamber, expel oil
droplets through the gas discharge/pressure connection and let
the vacuum
pump run dry. Therefore the vacuum pump must be shut down
at the latest after 10 hours of continuous operation, depending
on the operating conditions even after a shorter period, for at
least approx. 15 minutes (page 8: Operation Notes). After
turning off the vacuum pump the pressure difference between
the inside and the outside of the exhaust filter(s) (p, 120)
collapses, hence the two chambers of the oil separator assume
an equal pressure level, the oil return valve
(f, 280) between the two chambers opens and the accumulated
oil in the upper chamber can run down to the bottom chamber.
Cooling
The vacuum pump is cooled by
–radiation of heat from the surface of the vacuum pump incl.
oil separator (o, 75)
–the air flow from the fan wheel of the drive motor (400)
–the process gas
–the air flow from the fan wheel (e, 321) on the shaft of the
vacuum pump
Start Controls
The vacuum pump comes without start controls. The control of
the vacuum pump is to be provided in the course of installation.
4. Safety
Intended Use
Definition: For the purpose of these instructions, “handling” the
vacuum pump means the transport, storage, installation,
commissioning, influence on operating conditions, maintenance,
troubleshooting and overhaul of the vacuum pump.
The vacuum pump is intended for industrial use. It shall be
handled only by qualified personnel.
The allowed media and operational limits (page 3: Product
Description) and the installation prerequisites (page 6:
Installation Prerequisites) of the vacuum pump shall be observed
both by the manufacturer of the machinery into which the
vacuum pump is to be incorporated and by the operator.
The maintenance instructions shall be observed.
Prior to handling the vacuum pump these installation and
operating instructions shall be read and understood. If anything
remains to be clarified please contact your Schmalz
representative!
Safety Notes
The vacuum pump has been designed and manufactured
according to state-of-the-art methods. Nevertheless, residual
risks may remain.
These operating instructions highlight potential hazards where
appropriate. Safety notes are tagged with one of the keywords
DANGER, WARNING and CAUTION as follows:
Emission of Oil Mist
The oil in the process gas is separated to the greatest possible
extent, but not perfectly.

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Note: The possibly sensible smell is not caused by droplets of
oil, though, but either by gaseous process components or by
readily volatile and thus gaseous components of the oil
(particularly additives).
Noise Emission
For the sound pressure level in free field according to EN ISO
2151 page 2: Technical Data.
5. Transport
Note: Also a vacuum pump, that is not topped up with oil
contains residues of oil (from the test run). Always transport and
store the vacuum pump in upright position. Do not put the
vacuum pump on its side or put it upside down.
Transport in Packaging
Packed on a pallet the vacuum pump is to be transported with a
forklift.
Transport without Packaging
In case the vacuum pump is packed in a cardboard box with
inflated cushions:
Remove the inflated cushions from the box
In case the vacuum pump is in a cardboard box cushioned with
rolled corrugated cardboard:
Remove the corrugated cardboard from the box
In case the vacuum pump is laid in foam:
Remove the foam
In case the vacuum pump is bolted to a pallet or a base plate:
Remove the bolting between the vacuum pump and the
pallet/ base plate
In case the vacuum pump is fastened to the pallet by means of
tightening straps:
Remove the tightening straps
Make sure that the eyebolt (k, 391) is in faultless condition
(replace a damaged, e.g. bent eyebolt with a new one)
Make sure that the eyebolt (k, 391) is fully screwed in and
tightened by hand
Attach lifting gear securely to the eyebolt (k, 391) on the oil
separator
Attach the lifting gear to a crane hook with safety latch
Lift the vacuum pump with a crane
In case the vacuum pump was bolted to a pallet or a base plate:
oRemove the stud bolts from the rubber feet
Prior to every transport make sure that the oil is
drained
6. Storage
Short-term Storage
Version with gas ballast with ball-valve:
Make sure that the ball-valve of the gas ballast device
(440) is closed
Version with gas ballast without ball-valve, with sinter metal filter:
Close the sinter metal filter of the gas ballast device (440)
with adhesive tape
Make sure that the suction connection and the gas
discharge are closed (leave the provided plugs in)
Store the vacuum pump
oif possible in original packaging,
oindoors,
odry,
odust free and
ovibration free
Conservation
In case of adverse ambient conditions (e.g. aggressive
atmosphere, frequent temperature changes) conserve the
vacuum pump immediately. In case of favourable ambient
conditions conserve the vacuum pump if a storage of more than
3 months is scheduled.
During the test run in the factory the inside of the vacuum pump
was completely wetted withoil. Under normal conditions a
treatment with conservation oil is therefore not required. In case
it is advisable to treat the vacuum pump with conservation oil
because of very adverse storage conditions, seek advice from
your Schmalz representative!
Version with gas ballast with ball-valve:
Make sure that the ball-valve of the gas ballast (440) is
closed
Version with gas ballast without ball-valve, with sinter
metal filter:
Close the sinter metal filter of the gas ballast (440) with
adhesive tape
Make sure that all ports are firmly closed; seal all ports that
are not sealed with PTFE-tape, gaskets or o-rings with
adhesive tape
Note: VCI stands for “volatile corrosion inhibitor”. VCI-products
(film, paper, cardboard, foam) evaporate a substance that
condenses in molecular thickness on the packed good and by its
electro-chemical properties effectively suppresses corrosion on
metallic surfaces. However, VCI-products may attack the
surfaces of plastics and elastomers. Seek advice from your local
packaging dealer! Schmalz uses CORTEC VCI 126 R film for the
overseas packaging of large equipment.
Wrap the vacuum pump in VCI film
Store the vacuum pump
oif possible in original packing,
oindoors,
odry,
odust free and
ovibration free.
For commissioning after conservation:
Make sure that all remains of adhesive tape are removed
from the ports
Commission the vacuum pump as described in the chapter
Installation and Commissioning (page 6)

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7. Installation and Commissioning
Installation Prerequisites
Make sure that the integration of the vacuum pump is
carried out such that the essential safety requirements of
the Machine Directive 2006/42/EC are complied with (in
the responsibility of the designer of the machinery into
which the vacuum pump is to be incorporated; page 24:
note in the EC-Declaration of Conformity)
Mounting Position and Space
Make sure that the environment of the vacuum pump is not
potentially explosive
Make sure that the following ambient conditions will be
complied with:
ambient temperature: see “Oil”
If the vacuum pump is installed in a colder environment
than allowed with the oil used:
Fit the vacuum pump either with an oil sump heating
(on request)
or
fit the vacuum pump with a temperature switch and
control the vacuum pump such that it will start
automatically when the oil sump temperature falls
below the allowed temperature
ambient pressure: atmospheric
Make sure that the environmental conditions comply with
the protection class of the drive motor (according to the
nameplate)
Make sure that the vacuum pump will be placed or
mounted horizontally
Make sure that in order to warrant a sufficient cooling there
will be a clearance of minimum 20 cm between the
vacuum pump and nearby walls
Make sure that no heat sensitive parts (plastics, wood,
cardboard, paper, electronics) will touch the surface of the
vacuum pump
Make sure that the installation space or location is vented
such that a sufficient cooling of the vacuum pump is
warranted
Make sure that the vacuum pump will not be touched
inadvertently during operation, provide a guard if
appropriate
Make sure that the sight glass (m, 83) will remain easily
accessible
If the oil change is meant to be performed on location:
Make sure that the drain port (n, 95), the oil filter (h,
100) and the filling port (l, 88) will remain easily
accessible
Make sure that enough space will remain for the removal
and the reinsertion of the exhaust filter (p, 120)
Suction Connection
In case the inlet gas can contain dust or other foreign solid
particles:
Make sure that a suitable filter (5 micron or less) is
installed upstream the vacuum pump
Make sure that the suction line fits to the suction
connection (d, 260) of the vacuum pump
Make sure that the gas will be sucked through a vacuum-
tight flexible hose or a pipe
In case of using a pipe:
Make sure that the pipe will cause no stress on the
vacuum pump’s connection, if necessary use an
expansion joint
Make sure that the line size of the suction line over the
entire length is at least as large as the suction connection
(d, 260) of the vacuum pump
In case of very long suction lines it is prudent to use larger line
sizes in order to avoid a loss of efficiency. Seek advice from your
Schmalz representative!
If two or more vacuum pumps work on the same suction line, if
the volume of the vacuum system is large enough to suck back
oil or if the vacuum shall be maintained after switching off the
vacuum pump:
Provide a manual or automatic operated valve (= non-
return valve) in the suction line
(the standard non-return valve that is installed inside the suction
connection is not meant to be used for this purpose!)
If the vacuum pump is planned to be used for the suction of gas
that contains limited quantities of condensable vapour:
Provide a shut-off valve, a drip-leg and a drain cock in
the suction line, so that condensates can be drained
from the suction line
Make sure that the suction line does not contain foreign
objects, e.g. welding scales
Gas Discharge
The discharged gas must flow without obstruction. It is not
permitted to shut off or throttle the discharge line or to use
it as a pressurised air source.
The following guidelines for the discharge line do not apply, if the
aspirated air is discharged to the environment right at the
vacuum pump.
Make sure that the discharge line fits to the gas discharge
(c, 155) of the vacuum pump
In case of using a pipe:
Make sure that the pipe will cause no stress on the
vacuum pump’s connection, if necessary use an
expansion joint
Make sure that the line size of the discharge line over the
entire length is at least as large as the gas discharge (c,
155) of the vacuum pump

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In case the length of the discharge line exceeds 2 m it is prudent
to use larger line sizes in order to avoid a loss of efficiency and
an overload of the vacuum pump. Seek advice from your
Schmalz representative!
With unrestricted suction the counter pressure at the gas
discharge (c, 155) of the vacuum pump must not exceed 1.3 bar
abs (in case of doubt to be verified during commissioning at a
suitable time).
Make sure that the discharge line either slopes away from
the vacuum pump or provide a liquid separator or a drip
leg with a drain cock, so that no liquids can back up into
the vacuum pump
Electrical Connection / Controls
Make sure that the stipulations acc. to the EMC-Directive
2004/108/EC and Low-Voltage-Directive 2006/95/EC as well
as the EN-standards, electrical and occupational safety
directives, the local or national regulations, respectively, are
complied with (this is the responsibility of the designer of the
machinery into which the vacuum pump is to be
incorporated; page 24: note in the EC-Declaration of
Conformity).
Make sure that the power supply for the drive motor is
compatible with the data on the nameplate of the drive motor
(400)
Make sure that an overload protection according to EN
60204-1 is provided for the drive motor
Make sure that the drive of the vacuum pump will not be
affected by electric or electromagnetic disturbance from the
mains; if necessary seek advice from the Schmalz service
In case of mobile installation:
Provide the electrical connection with grommets that serve
as strain-relief
Installation
Mounting
Make sure that the installation prerequisites (page 6) are
complied with
Set down or mount the vacuum pump at its location
Connecting Electrically
Electrically connect the drive motor (400)
Connect the protective earth conductor
Connection Scheme Three-Phase Motor
Delta connection (low voltage):
Star connection (high voltage):
Double star Connection, multi-voltage motor (low voltage):
Star Connection, multi-voltage motor (high voltage):
Version with three-phase motor:
Determine the intended direction of rotation with the arrow
(a, 431) (stuck on or cast)
“Bump” the drive motor (400)
Watch the fan wheel of the drive motor (400) and determine
the direction of rotation just before the
fan wheel stops
If the rotation must be changed:
Switch any two of the drive motor wires (three-phase motor)
Connecting Lines/Pipes
In case the suction line is equipped with a shut-off valve:
Connect the suction line
Connect the discharge line

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Installation without discharge line:
Make sure that the gas discharge (c, 155) is open
Make sure that all provided covers, guards, hoods etc. are
mounted
Make sure that cooling air inlets and outlets are not covered
or obstructed and that the cooling air flow is not affected
adversely in any other way
Filling Oil
In case the vacuum pump was treated with conservation oil:
Drain the remainders of conservation oil
The vacuum pump is delivered without oil (oil specification 
page 23: Oil).
Keep approx. 1.0 litres oil acc. to the table Oil (_ page 23)
ready
Note: The amount given in these operating instructions is a
guide. The sight glass (m, 83) indicates the actual amount to be
filled in.
Remove the filling plug (l, 88)
Fill in approx. 1.0 litres of oil
Make sure that the level is between the MIN and the MAX-
markings of the sight glass (m, 83)
Make sure that the seal ring (89) is inserted into the filling
plug (l, 88) and undamaged, replace if necessary
Firmly reinsert the filling plug (l, 88) together with the seal
ring (89)
Note: Starting the vacuum pump with cold oil is made easier
when at this very moment the suction line is neither closed nor
covered with a rubber mat.
Switch on the vacuum pump
In case the suction line is equipped with a shut-off valve:
Close the shut-off valve
In case the suction line is not equipped with a shut-off valve:
Cover the suction connection (d, 260) with a piece of
rubber mat
Let the vacuum pump run for a few minutes
Shut down the vacuum pump and wait a few minutes
Check that the level is between the MIN and the MAX-
markings of the sight glass (m, 83)
In case the level has dropped below the MIN-marking:
Top-up oil
In case the suction line is equipped with a shut-off valve:
Open the shut-off valve
In case the suction line is not equipped with a shut-off valve:
Remove the piece of rubber mat and connect the suction
line
Recording of Operational Parameters
As soon as the vacuum pump is operated under normal
operating conditions:
Measure the drive motor current and record it as reference
for future maintenance and troubleshooting work
Version with exhaust filter pressure gauge:
Read the scale of the exhaust filter pressure gauge and
record it as reference for future maintenance and
trouble-shooting work (page 11: Checks during
Operation)
Operation Notes
Use
The vacuum pump is intended for
-the suction
of
-air and other dry, non-aggressive, non-toxic and non-
explosive gases.
Conveying media with a lower or higher density than air leads to
an increased thermal and/or mechanical load on the vacuum
pump and is permissible only after prior consultation with
Schmalz.
Permissible temperature range of the inlet gas: see “Oil”,
“Ambient temperature range”
In case the vacuum pump is equipped with a gas ballast
(optional) water vapour within the gas flow can be tolerated
within certain limits (page 9: Conveying Condensable
Vapours). The conveyance of other vapours shall be agreed
upon with Schmalz.
The vacuum pump is intended for the placement in a non-
potentially explosive environment.
Version with float valve (j, 200) and oil return line:
The vacuum pump is thermally suitable for continuous operation
(100 percent duty).
Version with oil return valve (f, 280):
The vacuum pump is thermally suitable for continuous operation
(observe the notes with regard to the oil recirculation: page 4:
Oil Circulation; page 9: Oil Return).
The vacuum pump is ultimate pressure proof.

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Make sure that all provided covers, guards, hoods etc.
remain mounted
Make sure that protective devices will not be disabled
Make sure that cooling air inlets and outlets will not be
covered or obstructed and that the cooling air flow will not be
affected adversely in any other way
Make sure that the installation prerequisites (page 6:
Installation Prerequisites) are complied with and will remain
complied with, particularly that a sufficient cooling will be
ensured
Oil Return
Only for version with oil return valve (f, 280):
During operation oil accumulates at the bottom of the upper
chamber of the oil separator (o, 75), which cannot flow down into
the bottom chamber, as long as the vacuum pump runs (for
detailed description: page 4: Oil Circulation).
At the latest after 10 hours of continuous operation, in case of
high pressure difference between suction side and pressure side
after a shorter period, the vacuum pump must be shut down for
at least 15 minutes, so that the oil can run down from the upper
chamber of the oil separator (o, 75) into the bottom
chamber.Note:
This is a good time to check the temperature, the level and the
colour of the oil.
Conveying Condensable Vapours
Version with gas ballast with ball-valve:
Make sure that the gas ballast valve is open and will remain
open during operation
Close the shut-off valve in the suction line
Operate the vacuum pump with the suction line shut off for
approx. half an hour, so that the operating temperature rises
to approx. 75 °C
At process start:
Open the shut-off valve in the suction line
At the process end:
Close the shut-off valve in the suction line
Operate the vacuum pump for another approx. half an hour
8. Maintenance
Prior to action that requires touching of the vacuum pump,
let the vacuum pump cool down, however, if the oil is to be
drained, for no more than 20 minutes (the oil shall still be
warm when being drained)
Prior to disconnecting connections make sure that the
connected pipes/lines are vented to atmospheric pressure
8.1 Maintenance Schedule
Note: The maintenance intervals depend very much on the
individual operating conditions. The intervals given below shall
be considered as starting values which should be shortened or
extended as appropriate. Particularly heavy duty operation, such
like high dust loads in the environment or in the process gas,
other contaminations or ingress of process material, can make it
necessary to shorten the maintenance intervals significantly.
Daily: Check the level and the colour of the oil (page 10:
Checking the Oil)
Weekly: Check the vacuum pump for oil leaks - in case of
leaks have the vacuum pump repaired (Schmalz
service)
Monthly: Check the function of the exhaust filter (p, 120)
(page 11: Exhaust Filter)
Make sure that the vacuum pump is shut down and
locked against inadvertent start up
In case an inlet air filter is installed:
Check the inlet air filter, if necessary replace
In case of operation in a dusty environment:
Clean as described page 9: Every 6
Months:
Every 6 Months: Make sure that the housing is free from dust
and dirt, clean if necessary
Make sure that the vacuum pump is shut
down and locked against inadvertent start up
Clean the fan cowlings, fan wheels, the
ventilation grilles and cooling fins

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Every Year: Make sure that the vacuum pump is shut down
and locked against inadvertent start up
Replace the exhaust filter (p, 120) (_ page 11:
Exhaust Filter)
In case an inlet air filter is installed:
Replace the inlet air filter
Check the inlet screen (261), clean if necessary
Version with gas ballast (440) with sinter metal filter:
Clean the sinter metal filter (compressed air)
Every 500 - 2000 Operating Hours (page 10: Oil Life):
Change the oil and the oil filter (h, 100) (
page 10: Oil and Oil Filter Change)
Version with float valve (j, 200) and oil return line:
Check the float valve (j, 200) (page 11:
Checking the Float Valve)
Checking the Oil
Checking the Level
Make sure that the vacuum pump is shut down and the oil
has collected at the bottom of the oil separator (o, 75)
Read the level on the sight glass (m, 83)
In case the level has dropped underneath the MIN-marking:
Top up oil (page 10: Topping up Oil)
In case the level exceeds the MAX-marking:
Excessive dilution with condensates - change the oil and
check the process
If appropriate retrofit a gas ballast (Schmalz Service) and
observe the chapter Conveying Condensable Vapours (
page 9)
In case the level exceeds the MAX-marking despite proper use
of the gas ballast:
Clean the sinter metal filter (compressed air)
Topping up Oil
Note: Under normal conditions there should be no need to top
up oil during the recommended oil change intervals. A significant
level drop indicates a malfunction (page 14: Troubleshooting).
Note: During operation the exhaust filter gets saturated with oil.
It is therefore normal that the oil level will drop slightly after
replacement of the exhaust filter.
Make sure that the vacuum pump is shut down and locked
against inadvertent start up
Remove the filling plug (l, 88)
Top up oil until the level reaches the middle of the sight
glass (m, 83)
Make sure that the seal ring (89) is inserted into the filling
plug (l,88) and undamaged, replace if necessary
Firmly reinsert the filling plug (l, 88) together with the seal
ring (89)
Checking the Colour of the Oil
Note: The oil should be light, either transparent, a little foamy or
a little tarnished. A milky discolouration that does not vanish after
sedation of the oil indicates contamination with foreign material.
Oil that is either contaminated with foreign material or burnt must
be changed (page 10: Oil and Oil Filter Change).
In case the oil appears to be contaminated with water or other
condensates despite proper use of the gas ballast:
Clean the sinter metal filter (compressed air)
Oil Life
The oil life depends very much on the operating conditions. A
clean and dry air stream and operating temperatures below 100
°C are ideal.
Under these conditions the oil and the oil filter (h, 100) shall be
changed every 500 to 2000 operating hours or after half a year.
Under very unfavourable operating conditions the oil life can be
less than 500 operating hours. Extremely short life times indicate
malfunctions (page 14: Troubleshooting) or unsuitable
operating conditions, though.
Chosing a synthetic oil instead of a mineral oil can extend the oil
life. To select the oil best suited oil for your process please
contact your Schmalz representative.
If there is no experience available with regard to the oil life under
the prevailing operation conditions, it is recommended to have
an oil analysis carried out every 500 operating hours and
establish the change interval accordingly.
Oil and Oil Filter Change
Draining Used Oil
Note: After switching off the vacuum pump at normal operating
temperature wait no more than 20 minutes before the oil is
drained (the oilshall still be warm when being drained).
Make sure that the vacuum pump is shut down and locked
against inadvertent start up
Make sure that the vacuum pump is vented to atmospheric
pressure
Put a drain tray underneath the drain port (n, 95)
Remove the drain plug (n, 95) and drain the oil

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When the oil stream dwindles:
Reinsert the drain plug (n, 95)
Switch the vacuum pump on for a few seconds
Make sure that the vacuum pump is shut down and locked
against inadvertent start up
Remove the drain plug (n, 95) again and drain the
remaining oil
Make sure that the seal ring (96) is inserted into the drain
plug (n, 95) and undamaged, replace if necessary
Firmly reinsert the drain plug (n, 95) together with the seal
ring (96)
Dispose of the used oil in compliance with applicable
regulations
Flushing the Vacuum Pump
Make sure that all the used oil is drained
Make sure that the used oil filter (h, 100) is still in place
Create 1.0 litres flushing agent from 50 percent oil and 50
percent paraffin or diesel fuel/fuel oil
Make sure that the drain plug (n, 95) is firmly inserted
Remove the filling plug (l, 88)
Fill in the flushing agent
Firmly reinsert the filling plug (l, 88)
Close the suction line
Run the vacuum pump for at least half an hour
Drain the flushing agent and dispose of it in compliance
with applicable regulations
Note: Due to the use of paraffin and even more in case of using
diesel fuel/fuel oil, an unpleasant odour can occur after
recommissioning. If this is a problem, diesel fuel/fuel oil should
be avoided and the vacuum pump be run at idle in a suitable
place until the unpleasant odour vanishes.
Checking the Float Valve
(version with float valve and oil return line only)
Note:
It is essential that the float valve (j, 200) works properly, so
that the vacuum pump will achieve the intended ultimate
pressure and no oil will be expelled out of the gas discharge
(c, 155).
Make sure that the vacuum pump is shut down and locked
against inadvertent start up
Prior to disconnecting pipes/lines make sure that the
connected pipes/lines are vented to atmospheric pressure
Remove the discharge line, if necessary
Remove the exhaust cover (c, 155)
Remove the oil from the floater chamber with the aid of a
suction hose or a wash bottle
Undo the screws (341) and remove the fan cover (e, 340)
Note: While undoing the banjo fitting of the oil return line (j, 195)
a small amount of oil will leak out: keep a cleaning rag ready. Be
careful not to lose the sealing rings of the banjo fitting.
Undo the banjo fitting of the oil return line (j, 195) from the
oil separator (o, 75) and bend the oil return line a little bit
aside
Undo the two screws of the flange of the float valve (j, 200)
and pull the float valve out of the oil separator (o, 75)
Check the cleanliness and function of the float valve (j,
200), blow out with compressed air, if necessary
Make sure that the o-ring on the flange of the float valve (j,
200) is in place and undamaged, replace with a new o-
ring, if necessary
Insert the float valve (j, 200) in the proper orientation into
the oil separator (o, 75) and fasten it with two screws and
lock washers
Connect the banjo fitting of the oil return line (j, 195) to the
oil separator (o, 75) with the hollow-core screw and two
seal rings
Fasten the fan cover (e, 340) to the vacuum pump with the
screws (341)
Only if the exhaust filter (p, 120) is not meant to be changed, too:
Make sure that the seal (141) under the exhaust cover (c,
155) is clean and undamaged, if necessary replace with a
new seal (141)
Mount the exhaust cover (c, 155) together with the seal
(141), hex head screws (146) and lock washers on the oil
separator (o, 75)
If necessary connect the discharge line
Replacing the Oil Filter
Make sure that the oil is drained
Remove the oil filter (h, 100)
Apply a drop of fresh oil on the seal ring of the new oil filter
(h, 100)
Mount the new oil filter (h, 100) and tighten it by hand
Dispose of the used oil filter in compliance with applicable
regulations
Filling in Fresh Oil
Keep 1.0 litres oil acc. to the table Oil (page 23) ready
Note: The amount given in these operating instructions is a
guide. The sight glass (m, 83) indicates the actual amount to be
filled in.
Make sure that the drain plug (n, 95) is firmly inserted
Remove the filling plug (l, 88)
Fill in approx. 1.0 litres of oil
Make sure that the level is between the MIN and the MAX-
markings of the sight glass (m, 83)
Make sure that the seal ring (89) is inserted into the filling
plug (l, 88) and undamaged, replace if necessary
Firmly reinsert the filling plug (l, 88) together with the seal
ring (89)
Exhaust Filter
Checks during Operation
Schmalz recommends the use of a filter pressure gauge
(available as accessory, page 21: Accessories). Without filter
pressure gauge the filter resistance shall be assessed on the
basis of the drive motor current
drawn.
Version with exhaust filter pressure gauge:
Remove the suction line from the suction connection (d,
260) (unrestricted suction!)
Make sure that the vacuum pump is running
Check that the reading on the filter pressure gauge is in
the green field

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Reconnect the suction line to the suction connection (d,
260)
Version without filter pressure gauge:
Make sure that the vacuum pump is running
Check that the drive motor current drawn is in the usual
range Version with oil return valve (f, 280)
Note: The discharged gas will also contain oil if the vacuum
pump is operated without interruption for too long a period (
page 8: Operation Notes).
Check that the discharged gas is free from oil
Assessment
If
the reading on the filter pressure gauge is in the red field,
or
the drive motor draws too much current and/or the pump flow
rate has dropped,
then the exhaust filter (p, 120) is clogged and must be replaced.
Note: Exhaust filters cannot be cleaned successfully. Clogged
exhaust filters must be replaced with new ones.
If the filter pressure gauge indicates a lower pressure than usual,
or
the drive motor draws less current than usual,
then the exhaust filter (p, 120) is broken through and must be
replaced.
If the discharged gas contains oil,
the exhaust filter (p, 120) can either be clogged or broken
through and, if applicable, must be replaced.
Change of the Exhaust Filter
Removing the Exhaust Filter
Make sure that the vacuum pump is shut down and locked
against inadvertent start up
Prior to disconnecting pipes/lines make sure that the
connected pipes/lines are vented to atmospheric pressure
Remove the discharge line, if necessary
Remove the exhaust cover (c, 155) from the oil separator
(o, 75)
Loosen the screw in the centre of the exhaust filter
retaining spring (125), but do not remove it at this time
Press the exhaust filter retaining spring (125) out of the
indent and rotate it
Remove the exhaust filter retaining spring (125) from the
oil separator (o, 75)
Pull the exhaust filter (p, 120) out of the oil separator (o,
75)
Inserting the Exhaust Filter
Make sure that the new exhaust filter (p, 120) is equipped
with a new o-ring
Insert the exhaust filter (p, 120) such that its port is
properly seated in its receptacle in the oil separator (n, 75)
Make sure that the tip of the screw in the centre of the
exhaust filter retaining spring (125) protrudes the retaining
spring by about 2 - 5 revolutions
Insert the exhaust filter retaining spring (125) such that its
ends are secured in their receptacles in the oil separator
(o, 75) by the protrusions and that the tip of the screw
snaps into the indent of the exhaust filter (p, 120)
Tighten the screw in the exhaust filter retaining spring
(125) such that the screw head touches the spring steel
sheet
Make sure that the seal (141) under the exhaust cover (c,
155) is clean and undamaged, if necessary replace with a
new seal (141)
Mount the exhaust cover (c, 155) together with the seal
(141), hex head screws (146) and lock washers on the oil
separator (o, 75)
If necessary connect the discharge line
Note: During operation the exhaust filter gets saturated with oil.
It is therefore normal that the oil level will drop slightly after
replacement of the exhaust filter.
9. Overhaul

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Schmalz service will only accept vacuum pumps that come with
a completely filled in and legally binding signed “Declaration of
Contamination”
10. Removal from Service
Temporary Removal from Service
Prior to disconnecting pipes/lines make sure that all pipes/lines
are vented to atmospheric pressure
Recommissioning
After longer periods of standstill:
Make sure that the vacuum pump is locked against
inadvertent start up
Remove the cover around the fan of the drive motor (400)
Slowly rotate the fan wheel by hand several revolutions in
the intended direction of rotation (see stuck on or cast
arrow (a, 431))
Mount the cover around the fan wheel of the drive motor
(400)
If deposits could have gathered in the vacuum pump:
Flush the vacuum pump (page 9: Maintenance)
Observe the chapter Installation and Commissioning (
page 6)
Dismantling and Disposal
Remove the exhaust filter (p, 120) (_ page 11: Exhaust
Filter)
Drain the oil
Remove the oil filter (h, 100)
Make sure that materials and components to be treated as
special waste have been separated from the vacuum
pump
Make sure that the vacuum pump is not contaminated with
harmful foreign material
According to the best knowledge at the time of printing of this
manual the materials used for the manufacture of the vacuum
pump involve no risk.
Dispose of the used oil in compliance with applicable
regulations
Dispose of special waste in compliance with applicable
regulations
Dispose of the vacuum pump as scrap metal

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11. Troubleshooting
Problem
Possible Cause
Remedy
The vacuum pump does not
reach the usual pressure
The drive motor draws a too high
current (compare with initial value
after commission- ing)
Evacuation of the system takes too
long
The vacuum system or suction line is not
leak-tight
Check the hose or pipe connections for
possi- ble leak
In case a vacuum relief valve/regulating
system is installed:
The vacuum relief valve/regulating system is
misadjusted or defective
Adjust, repair or replace, respectively
Contaminated oil (the most common cause)
Change the oil(page 9: Maintenance)
No or not enough oil in the reservoir
Top up oil (page 9: Maintenance)
The exhaust filter (p, 120) is partially clogged
Replace the exhaust filter (p, 120) (
page 9: Maintenance)
The oil filter (h, 100) is clogged (the oil flows
through the bypass only, the oil does not get
filtered any more)
Replace the oil filter (h, 100)
(page 9: Maintenance)
The screen (261) in the suction connection
(d, 260) is partially clogged
Clean the screen (261)
If cleaning is required too frequently
install a filter upstream
In case a filter is installed on the suction
connection (d, 260):
The filter on the suction connection (d, 260) is
partially clogged
Clean or replace the inlet air filter,
respectively
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with
too small diameter
Use larger diameter
The valve disk of the inlet non-return valve is
stuck in closed or partially open position
Disassemble the inlet, clean the screen
(261) and the valve (257) as required
and reassem ble
The oil tubing is defective or leaking
The oil return line (j, 195) is broken
Tighten the connections
Replace the connections and/or the
tubing (replace with identically
dimensioned parts only)

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Version with float valve (j, 200) and oil return line
The float valve (j, 200) is stuck in open posi tion
Make the float valve (j, 200) movable,
replace if necessary (page 11: Checking
the Float Valve)
A shaft seal is leaking
Replace the shaft seal ring (Schmalz service)
An/The exhaust valve (q, 159) is not properly
seated or stuck in partially open position
Disassemble and reassemble the
exhaust valve(s) (q, 159) (Schmalz
service)
A vane (r, 22) is blocked in the rotor or other-
wise damaged
Free the vanes (r, 22) or replace with
new ones (Schmalz service)
The radial clearance between the rotor (s, 14) and
the cylinder (t, 1) is no longer adequate
Readjust the vacuum pump (Schmalz
service)
Internal parts are worn or damaged
Repair the vacuum pump (Schmalz service)
The gas conveyed by the
vacuum pump smells
displeasing
Process components evaporating under
vac uum
Readily volatile and thus gaseous components of
the oil, e.g. additives, particularly right after an oil
change.
Note: This is no indication of a malfunction of the
oil separator. The oil separator is able to retain
droplets of oil, however no gaseous components
of it.
Check the process, if applicable
Use a different type of oil, if applicable
The vacuum pump does not
start
The drive motor (400) is not supplied with the
correct voltage or is overloaded
Supply the drive motor (400) with the
correct voltage
The drive motor starter overload protection is too
small or trip level is too low
Compare the trip level of the drive motor
starter overload protection with the data
on the nameplate, correct if necessary
In case of high ambient temperature: set
the trip level of the drive motor starter
overload protection 5 percent above the
nominal drive motor current
One of the fuses has blown
Check the fuses
Version with alternating current motor: The drive
motor capacitor is defective
Repair the drive (Schmalz service)
The connection cable is too small or too long
causing a voltage drop a t the vacuum pump
Use sufficiently dimensioned cable
The vacuum pump or the drive motor is
blocked
Make sure the drive motor is
disconnected from the power supply
Remove the fan cover
Try to turn the drive motor with the
vacuum pump by hand
If the unit is stillfrozen: remove the drive mo-
tor and check the drive motor and the
vacuum pump separately
If the vacuum pump is blocked:
Repair the vacuum pump (Schmalz service)
The drive motor (400) is defective
Replace the drive motor (Schmalz service)
The vacuum pump is blocked
Solid foreign matter has entered the vacuum
pump
Repair the vacuum pump (Schmalz service)
Make sure the suction line is equipped with
a screen
If necessary additionally provide a filter
Corrosion in the vacuum pump from remaining
condensate
Repair the vacuum pump (Schmalz
service) Check the process
Observe the chapter Conveying
Condensable
Vapours (page 9)

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Version with three-phase motor:
The vacuum pump was run in
the wrong
di rection
Repair the vacuum pump (Schmalz
service) When connecting the vacuum
pump make
sure the vacuum pump will run in the
correct direction (page 7: Installation)
After shutting down the vacuum pump the
vacuum system exerted under pressure onto the
pump chamber which sucked back exces sive oil
from the oil separator into the pump chamber
When the vacuum pump was restarted too
much oil was enclosed between the vanes
(r, 22)
Oil could not be compressed and thus broke a
vane (r, 22)
Repair the vacuum pump (Schmalz
service) Make sure the vacuum system will
not exert
Under pressure onto the shut-down
vacuum pump, if necessary provide an
additional shut-off valve or non-return
valve
After shutting down the vacuum pump
con densate ran into the pump chamber
When the vacuum pump was restarted too
much condensate was enclosed between the
vanes (r, 22)
Condensate could not be compressed and
thus broke a vane (r, 22)
Repair the vacuum pump (Schmalz
service) Make sure no condensate will
enter the
vacuum pump, if necessary provide a drip
leg and a drain cock
Drain condensate regularly
The drive motor is
running, but the vacuum
pump stands still
The coupling (310) betweenthe drive motor
and the vacuum pump is defective
Replace the coupling element (310)
The vacuum pump starts,
but labours or runs noisily
or rattles
The drive motor draws a
too high current (compare
with initial value after
commissioning)
Loose connection(s) in the drive motor terminal
box
Version with three-phase-motor:
Not all drive motor coils are properly
con nected
The drive motor operates on two phases only
Check the proper connection of the wires
against the connection diagram
(particularly on motors with six coils) Tighten
or replace loose connections
Version with three-phase motor:
The vacuum pump runs in the wrong direction
Verification and rectification  page 6:
Installation and Commissioning
Standstill over several weeks or months
Let the vacuum pump run warm with
inlet closed
Oil viscosity is too high for the ambient
tem perature
Use synthetic oil, if necessary use oil of the
next lower viscosity class (CAUTION:
operation with too low viscosity can cause
chatter marks inside the cylinder)
Warm up the oil with a heater prior to
starting up the vacuum pump, or run the
vacuum pump in intervals in order not to let
it get too cold
Improper oil quantity, unsuitable oil type
Use the proper quantity of one of the
recom mended oils
(page 23: Oil change:  page 9:
Mainte nance)
No oil change over extended period of time
Perform oil change incl. flushing and oil
filter replacement
(page 9: Maintenance)
The exhaust filter (p, 120) is clogged and
appears black from burnt oil
Flush the vacuum pump Replace
the oil filter (h, 100) Replace the
exhaust filter (p, 120) Fill in new
oil
(page 9: Maintenance)
In case the oil life is too short: use oil with
better heat resistance ( page 23: Oil) or
retrofit cooling
Foreign objects in the vacuum pump
Broken vanes (r, 22)
Stuck b earings
Repair the vacuum pump (Schmalz service)

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The vacuum pump runs very
noisily
Defective bearings
Repair the vacuum pump (Schmalz service)
Worn coupling element (310)
Replace the coupling element (310)
Stuck vanes (r, 22)
Repair the vacuum pump (Schmalz service)
Use only recommended oils ( page 23: Oil)
and change more frequently
The vacuum pump runs very
hot
(the oil sump temperature
shall not exceed
100 °C)
Insufficient air ventilation
Make sure that the cooling of the
vacuum pump is not impeded by
dust/dirt
Clean the fan cowlings, the fan wheels,
the ventilation grilles and the cooling fins
Install the vacuum pump in a narrow
space only if sufficient ventilation is
ensured
On a vacuum pump with oil-cooler: clean
the intermediate spaces of the finned tube
Ambient temperature too high
Observe the permitted ambient
temperatures
Temperature of the inlet gas too high
Observe the permitted temperatures for
the inlet gas
The exhaust filter (p, 120) is partially clogged
Replace the exhaust filter (p, 120)
The oil filter (h, 100) is clogged (the oil flows
through the bypass only, the oil does not get
filtered any more)
Replace the oil filter (h, 100)
(page 9: Maintenance)
Not enough oil in the reservoir
Top up oil
Oil burnt from overheating
Flush the vacuum pump Replace the oil filter
(h, 100) Replace the exhaust filter (p, 120) Fill
in new oil
(page 9: Maintenance)
In case the oil life is too short: use oil with
better heat resistance ( page 23: Oil) or
retrofit cooling
Mains frequency or voltage outside tolerance
range
Provide a more stable power supply
Partial clogging of filters or screens
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with too
small diameter
Use larger diameter
The vacuum pump fumes
or expels oil drop- lets
through the gas
discharge
The oil level drops
The exhaust filter (p, 120) is not properly
seated
Check the proper position of the exhaust
filter (p, 120), if necessary insert properly (
page 9: Maintenance)
The o-ring is missing or damaged
Add or replace resp. the o-ring (page 9:
Maintenance)
The exhaust filter (p, 120) shows cracks
Replace the exhaust filter (p, 120) (page
9: Maintenance)
The exhaust filter (p, 120) is clogged with foreign
matter
Note:
The saturation of the exhaust filter with oil is no
fault and does not impair the function of the
exhaust filter! Oil dropping down from the
exhaust filter is returned to the oil circula tion.
Replace the exhaust filter (p, 120) (page
9: Maintenance)
Version with oil return valve (f, 280):
In case the vacuum pump runs for morethan
10 hours without interruption, oil can collect in the
upper chamber of the oil separator (o,
75) to an extent that it gets expelled together with
the discharged gas
Regularly shut down the vacuum pump for
short periods of time. Check that the oil
return valve (f, 280) functions properly and
lets oil
run from the upper into the bottom
chamber of the oil separator (o, 75) as
soon as the vacuum pump is shut down
(page 4: Oil Circulation)

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Aacher Str. 29 Status 03.2017
72293 Glatten Index 01
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Version with oil return valve (f, 280):
The oil return valve (f, 280) does not work properly
or is clogged (proper function iswhen blowing into
the valve it should close, when vacuum is applied,
the valve should open; CAUTION:
do not let your mouth get in direct contact with the
oil return valve, do not inhale through the oil return
valve!)
Clean or replace the oil return valve (f, 280)
Version with float valve (j, 200) and oil return line:
The float valve (j, 200) is stuck in closed posi tion
Make the float valve (j, 200) movable,
replace if necessary (page 11: Checking
the Float Valve)
The oil return line (j, 195) is clogged or broken
Clean a clogged oil return line (j, 195)
Replace a broken oil return line (j, 195)
with an identically dimensioned line, top up
oil (if necessary by Schmalz service)
The oil is black
Oil change intervals are too long
The oil was overheated
Flush the vacuum pump Replace
the oil filter (h, 100) Replace the
exhaust filter (p, 120) Fill in new
oil
(page 9: Maintenance)
In case the oil life is too short: use oil with
better heat resistance ( page 23: Oil) or
retrofit cooling
The oil is watery and coloured
white
The vacuum pump aspirated water or significant
amounts of humidity
Version with gas ballast:
The filter of the gas ballast is
clogged
Flush the vacuum pump Replace
the oil filter (h, 100) Replace the
exhaust filter (p, 120) Fill in new
oil
(page 9: Maintenance)
Modify the operational mode ( page 9:
Operating Notes  Conveying Condensable
Vapours)
Version with gas ballast (440) with sinter
metal filter:
Clean the sinter metal filter (compressed air)
The oil is resinous and/or
sticky
Improper oil type, perhaps in confusion
Topping up of incompatible oil
Flush the vacuum pump Replace
the oil filter (h, 100) Replace the
exhaust filter (p, 120) Fill in new
oil
( page 9: Maintenance)
Make sure the proper oil is used for
changing and topping up
The oil foams
Mixing of incompatible oils
Flush the vacuum pump Replace
the oil filter (h, 100) Replace the
exhaust filter (p, 120) Fill in new
oil
( page 9: Maintenance)
Make sure the proper oil is used for
topping up

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Aacher Str. 29 Status 03.2017
72293 Glatten Index 01
Tel.: [phone]
Fax: [phone] Seite 19 / 24
12. Exploded View

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Aacher Str. 29 Status 03.2017
72293 Glatten Index 01
Tel.: [phone]
Fax: [phone] Seite 20 / 24
13. Spare Parts
Note: When ordering spare parts or accessories acc. to the table
below please always quote the type („Type“) and the serial no.
(„No“) oft he vacuum pump this will allow Schmalz service to
check if the vacuum pump is compatible with a modified or
improved part.
The exclusive use of genuine spare parts and consumables is a
prerequisite fort he proper function oft he vacuum pump and fort
he granting of warranty, guarantee or goodwill.
This parts list applies to a typical configuration oft he vacuum
pump EVE-OG-25 F / …40 F. Depending on the specific order
deviating parts data may apply.
Your point of contact for service and spare partsIhr
Ansprechpartner für Servie und Ersatzteile in Deutschland:
J. Schmalz GmbH
Aacher Str. 29
72293 Glatten
Tel: [phone]
Fax: [phone]
Find the list of Schmalz companies all over the world (by the
time oft he publication of these installation and operating
instructions) on  page 24 (rear cover side.
Find the up-to-date list of Schmalz companies and agencies all
over the world on the internet at www.schmalz.com
Pos
Part
Qty
Part no.
1
Cylinder (EVE-OG-25 F)
1
0223 139 799
1
Cylinder (EVE-OG-40 F)
1
0223 137 410
14
Rotor with shaft sleeves
(EVE-OG-25 F)
1
0950 138 501
14
Rotor with shaft sleeves
(EVE-OG-40 F)
1
0950 138 493
18
Shaft sleeves
2
0472 105 823
24
Cylindercover A-Site,
complete
1
0952 138 010
27
Cylindercover B-Site,
complete
1
0952 138 011
30
Needle bearing
2
0473 103 122
35
Shaft seal ring
2
0487 000 005
42
Supporting washer
2
0391 000 016
43
Hex head screw
4
0410 000 023
46
Seal ring
1
0484 000 029
47
Plug
1
0415 000 002
50
O-ring
2
0486 000 537
53
Hex head screw
6
0410 000 126
57
Parallel pin
1
0437 138 870
60
Taper pin
4
0437 000 070
65
Parallel key
1
0434 000 019
66
Parallel key
1
0434 000 019
75
Oil separator (Version with
float valve and oil return line)
1
0266 137 346
75
Oil separator (Version with
oil return valve)
1
0266 138 692
83
Sight glass
1
0583 000 001
84
Gasket
1
0480 000 271
88
Plug
1
0710 000 009
89
O-ring
1
0486 000 590
95
Plug
1
0710 000 010
96
O-ring
1
0486 000 505
99
Nipple
1
0461 000 061
100
Oilfilter
1
0531 000 002
105
Cover
1
0320 109 603
106
Gasket
1
0480 000 153
107
Hex head screw
4
0410 000 017
125
Filter spring
1
0947 000 720
136
Round gasket-service cover
1
0486 114 368
138
Hex head screw
4
0410 000 029
139
Service cover
1
0247 113 773
141
Gasket
1
0480 000 112
146
Hex head screw
4
0410 000 021
155
Exhaust cover plate,
complete
1
0947 125 296
159
Exhaust valve, complete
2
0916 126 769
185
Gasket
1
0480 000 150
186
Stud bolt
4
0412 104 730
191
Hex nut
4
0420 000 035
195
Oil return line, complete
1
0946 138 688
200
Float valve, complete
1
0947 138 417
210
Oil supply
(EVE-OG-25 F) complete
1
0913 140 895
210
Oil supply
(EVE-OG-40 F) complete
1
0913 142 101
250
Inlet flange, lower part
1
0246 101 999
255
O-ring
2
0486 000 526
257
Valve insert, complete
1
0916 143 238
260
Inlet flange
1
0246 000 541
261
Screen
1
0534 000 018
265
Hex head screw
4
0410 105 417
280
Oil return valve, complete
1
0946 139 037
300
Motor flangeh
1
0247 107 490
301
Hex head screw
3
0410 000 126
310
Coupling, complete, for
3phase motor, motor shaftØ
19mm
1
0510 000 006
310
Coupling, complete, for
3phase motor, motor shaftØ
24mm
1
0510 000 008
310
Coupling for other motors
1
on request
312
Coupling sleeve for AC-
motors
1
0512 000 003
315
Protection clip
3
0710 109 012
321
Axial flow fan (EVE-OG-25 F)
1
0524 120 370
321
Axial flow fan (EVE-OG-40 F)
1
0524 108 652
326
Locking ring
1
0432 000 367
340
Fan cover
1
0713 000 653
341
Tapping screw
2
0416 120 665
345
Protective grid
1
0713 110 795