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 danger Death, 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 a suction temperature of
between 12 and 40°C
Please contact us for temperatures outside this
range.
• the machine may convey, compress or extract
the following media:
• Air
The air extracted may contain water vapour
but no water or other liquids. For water vapour compatibility see Info I 200
• all non-explosive, non-infl ammable, non-ag-
gressive and non-poisonous dry gases and
gas air mixtures
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
• extracting, conveying and compressing explosive, infl ammable, aggressive, oxidative or
poisonous media, e.g. dust as per ATEX zone
20-22, solvents
• 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 of more than
+0,1bars
• 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 V-VCB has a fi ne micro fi lter on the suction side and on the outlet side an oil and oil mist separator to
return the oil to the oil circulation system. A fan between the pump housing and the motor provides intensive
air cooling. The fan is located in a fan cover that guards against it being touched.
An integral non-return valve prevents the evacuated system from being ventilated after the pump has stopped.
If the machine has been idle for more than two minutes the connected pipe should be ventilated to atmospheric
pressure.
A gas ballast valve ((U)➝ version (07)) prevents water vapour condensation from getting into the inside of the
pump when it is sucking in small amounts of steam and the pump is at operating temperature.The pump is
driven by a standard fl anged single-phase or three-phase motor using a coupling.
4.3 Areas of application
These oil-fl ooded rotary vane vacuum pumps V-VCB 20 and V-VCB 25 are suitable h for producing vacuums. The suction power with unrestricted suction is 20 and 22.5 m
3
/h at 50 Hz. Data sheet D 159.
These types are suitable for the evacuation of closed systems or for a continuous vacuum within the following intake pressure ranges:
50 Hz ➝ 2 - 200 mbars (abs.) • 60 Hz➝ 2 - 150 mbars (abs.)
If the machine is operated continuously outside these ranges there is the risk of oil leaking through the outlet
opening. When evacuating closed systems the volume to be evacuated must be no more than 2% of the
nominal pumping capacity of the vacuum pump.
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).
• 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 pointFig. 2/H), oil sight glassFig. 2/I) and oil outletFig. 2/K) must be easily accessible.
The cooling air inlets (Fig. 2/E) and the cooling air outlets (Fig. 2/F) must be at least 15 cm away
from adjacent walls. Discharged cooling air must not be sucked in again.For maintenance work
there must be a space of at least 30 cm around the machine.
5.2 Installation
Ensure that the foundation complies with the follow-
• Level and straight
• The bearing surface must be at least the same
• The bearing surface must be able to bear the
NOTICE
The machine may only be operated when it is
set up horizontally.
Material damage resulting from the machine
tipping over and falling.
When installed at more than 1000 m above sea
level a reduction in power is noticeable. In this
case we would ask you to contact us.
ing conditions:
size as the machine
weight of the machine
It is possible to install the machine on a fi rm base without anchoring. When installing on a substructure we recommend fi xing with fl exible buffers
Danger of death if the electrical installation has
not been done professionally.
The electrical installation must only be done by a
qualifi ed 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/
). The motors comply with DIN EN 60034
P
1
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 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 can 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.
1/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
Oil aerosols in the extracted air
In spite of the air oil removing system separating the
oil mist to a large extent, the extracted air contains
a small residue of oil aerosols. Breathing in these
aerosols all the time could damage your health.
Therefore you must ensure that the installation room
is well ventilated
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 anti-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 (clockwise rotating fi eld).
b) After correcting the direction of rotation if nec-
essary, start the motor again and stop it again
after 2 minutes in order to top missing oil up to
the upper edge of the sight glass (Fig. 2/I). This
topping up at the fi lling point (Fig. 2/H) must be
repeated until all the oil pipes have been fi lled
completely. The fi lling point must not be open
when the pump is running.
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.
see also Section 3.2.1, Page 11
6.3 Re-commissioning
a) Check the condition of the machine (cleanliness,
cabling etc.).
b) Drain the preserving agents.
For installation see Section 5 Page 14
For commissioning see Section 6.1 Page 17
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.
7.2 Maintenance work
IntervalMaintenance to be carried outSection
monthlyCheck the pipes and screws for leaks and to ensure they are
—
seated properly and if necessary seal again or tighten up.
monthlyCheck the terminal box and cable inlet holes for leaks and if
—
necessary re-seal.
monthlyClean the ventilation slots on the machine and the motor
The power of the machine lessens and damage may
occur to the machine.
The micro fi lter (Fig. 4/f
) must be cleaned by rinsing
1
out or purging or replaced more or less often depending on how dirty the discharged medium is.
Also check the non-return valve (Fig. 4/h) for contamination.
Remove the fi lter housing (Fig. 4/D) after undoing
the screws (Fig. 4/s1). Remove the non-return valve
(Fig. 4/h) from the suction fl ange after undoing the
screws (Fig. 4/s2).
Re-assemble in reverse order.
The coupling rubbers (Fig. 5/k) are subject to wear
m
and und must be checked regularly (at least once a
year).. You can tell when the coupling rubbers are
worn by a knocking noise when the pump starts up.
q
s
4
CAUTION
v
1
l
k
Fig. 5 Coupling
Coupling rubber
k
l Retaining ring
Retaining ring
l
1
m Motor
Coupling half on the motor side
q
Coupling half on the pump side
q
1
Coupling bolt
r
s4 Screw
Screw
s
5
u Washer
s
5
Defective coupling rubbers
Defective coupling rubbers may lead to the rotor
l
1
q
1
r
v
u
w
shaft breaking
To check the coupling switch the motor (Fig. 5/m) off and ensure that it cannot be
switched on again.. Undo screws (Fig. 5/s
)
4
. Remove the machine axially with the coupling half
on the pump side (Fig. 5/q1). If the coupling rubbers (Fig. 5/k) are damaged remove the retaining
rings (Fig. 5/l) from the coupling bolts (Fig. 5/r) and
replace the coupling rubbers (Fig. 5/k).
Check and if necessary replace the coupling bolts
(Fig. 5/r): Remove the retaining ring (Fig. 5/l1). Remove the coupling half on the pump side (Fig. 5/q1)
and the fan (Fig. 5/v) from the pump shaft. Undo
the nuts (Fig. 5/w) and the washers (Fig. 5/u) and
replace the coupling bolts.
NOTICE
Frequent starting up and high ambient temperature
The service life of the sprocket (Fig. 6/k) is reduced
as a result of this.
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 are going to use another oil type, empty the
oil removing device housing and oil cooler completely.
The oil level must be checked at least once a day,
if necessary top the oil up to the upper edge of the
sight glass (Fig. 6/I) First oil change after 500 hours
of operation. Subsequent oil changes after 5002000 hours of operation. Reduce the change intervals accordingly depending on how contaminated
the discharged medium is.
Only lubricating oils complying with DIN51506 group
VC/VCL or a synthetic oil approved by Elmo Rietschle must be used. The viscosity of the oil must
comply with ISO-VG46 as per DIN51519.Elmo Ri-etschle oil types: MULTI-LUBE 46 (mineral oil) and
SUPER-LUBE46 (synthetic oil) see also oil recommendation plate (Fig. 6/M)).
If the oil is subject to high temperatures (ambient or
intake temperatures over 30°C, insuffi cient cooling,
60 Hz operation etc.) the oil change interval may be
extended by using the recommended synthetic oil.
Heavily contaminated air oil removing devices lead
to increased pump temperatures and in extreme
cases may cause the lubricating oil to ignite spontaneously.
The oil separator element may be contaminated with
particles of dirt when it has been running for a long
time (power consumption and pump temperature
increase). Replace the device (Fig. 7/L) every 2000
operating hours because it is not possible to clean
it.
Reduce the change intervals accordingly depending
on how contaminated the discharged medium is.
Changing: Remove the purging cover (Fig. 7/T) and
the gasket after undoing the screws (Fig. 7/s
). Un-
3
screw the oil separator element (Fig. 7/L) with a hexagonal wrench (size 10) and replace.
NOTICE
Ensure that the O ring is correctly seated on the new
oil separator element.
Re-assemble in reverse order. Before fi tting lightly oil
the O ring Fig. 7/L1) on the new oil removing device
and tighten it to 15 Nm.
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. 8 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..
➝ Downloads
➝ Product Documents
➝ V-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
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
Machine is switched
off by the motor protection switch
Mains voltage/ Frequency
does not correspond with the
motor data
Connection to motor terminal
board is not correct
Motor protection switch is not
set correctly
Motor protection switch is
triggered too quickly
Vacuum pump or its oil is too
cold
The lubricating oil is too viscous
The oil separator element is
dirty.
Check by qualifi ed electricianSection 5.5
Use a motor protection switch
with an overload-dependent
delayed switch off that takes
into consideration the short
term excess current at start
up (version with short circuit
and overload trigger as per
VDE 0660 Part 2 orIEC 947-4)
Note the ambient temperature
and the intake temperature
The oil viscosity must comply
with ISO VG 46 as per DIN
51519
Change the oil separator element
Section 2.3
Section 7.2.3
Section 7.2.4
Pumping capacity is
insuffi cient
The back pressure is too high
when the exhaust air is being
discharged.
The suction pipe is too long or
too narrow
Leak on the suction side of
the vacuum pump or in the
system
The intake fi lter is dirtyClean or replace the intake
Check the hose or the pipeSection 5.3
Check the hose or the pipeSection 5.3
Check the pipework and
screw connections for leaks
and to ensure that they are
fi rmly seated.
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: