Gardner Denver Wittig RFW 150 DV Service manual

PARTS LIST
OPERATING AND
SERVICE MANUAL
RFW
150-260
BA-45.01.0-US
Version 00
January 23, 2015

BA-45.01.0 • US •01/15 1-2
Content
Table of Contents
Dear customer,...........................................................1
Operating Principle....................................................2
Machine versions.......................................................2
1. Technical data............................................1-1
Machine data ......................................................1-1
Dimensions.........................................................1-2
Lubrication ..........................................................1-2
Water Cooling.....................................................1-4
Drive methods.....................................................1-4
2. Safety rules and notes on danger.........2-1
Designated usage...............................................2-1
Acceptance and monitoring.................................2-1
Operational safety...............................................2-1
Environmental protection ....................................2-1
ATTENTION...........................................................2-1
Information..........................................................2-1
Points to note......................................................2-1
3. Transport, storage, delivery contents .....3-1
Transport.............................................................3-1
Storage ...............................................................3-1
Delivery contents ................................................3-1
4. Installation..................................................4-1
Installation location and attachment....................4-2
Prevention of suction intake of dirt and residue ..4-2
4.2.1 Suction pipe........................................................4-2
4.2.2 Vacuum filter.......................................................4-2
4.2.3 Safety dome........................................................4-2
4.2.4 Safety vessel.......................................................4-3
Noise suppression (low noise installation) ..........4-3
4.3.1 Air noise suppression by noise suppressing oil
separator.............................................................4-3
4.3.2 Body noise isolation............................................4-4
Safety and monitoring features...........................4-5
4.4.1 Vacuum meter.....................................................4-5
4.4.2 Vacuum filter.......................................................4-5
4.4.3 Ventilation valve..................................................4-5
4.4.4 Non-return valve .................................................4-5
4.4.5 Thermometer ......................................................4-6
4.4.6 Safety valve ........................................................4-6
4.4.7 Manometer..........................................................4-6
4.4.8 Contact prevention..............................................4-6
4.4.9 Oil level monitoring .............................................4-6
4.4.10 Rotation speed monitoring..................................4-6
Water cooling......................................................4-6
Drive ...................................................................4-7
4.6.1 Hydromotor drive ................................................4-7
4.6.2 Drive by flexible coupling ....................................4-7
4.6.3 Drive by drive shaft.............................................4-8
4.6.4 V-belt drive..........................................................4-8
5. Initial operation .........................................5-1
Checking the system...........................................5-1
Cooling water......................................................5-1
Lubricating oil......................................................5-1
Shut-off slides and valves ...................................5-2
Rotating direction ................................................5-2
Drive....................................................................5-2
Checking the rotation speed, vacuum and
pressure..............................................................5-2
5.7.1 Rotation speed....................................................5-2
5.7.2 Vacuum at the vacuum meter .............................5-2
5.7.3 Pressure at the manometer.................................5-2
Lubrication oils for rotary compressor/
compressor vacuum pumps................................5-2
6. Operation ...................................................6-1
Switching on........................................................6-1
Regular checks....................................................6-1
6.2.1 Safety valve.........................................................6-1
6.2.2 Ventilation valve..................................................6-2
6.2.3 Checking intervals...............................................6-2
Possible operating errors ....................................6-2
Precautions for long standstill periods.................6-2
Rinsing after machine has over sucked...............6-3
Procedure if faults occur......................................6-4
7. Maintenance...............................................7-1
Guarantee...........................................................7-1
Maintenance, maintenance plan .........................7-1
7.2.1 Water cooling/cooler............................................7-1
7.2.2 Rotary compressor/compressor and
vacuum pump......................................................7-2
7.2.3 Vacuum filter.......................................................7-2
7.2.4 V belts and V belt tension....................................7-2
7.2.5 Cleaning oil reservoir...........................................7-2
7.2.6 Non-return valve..................................................7-3
7.2.7 Ventilation valve..................................................7-3
7.2.8 Rotor vane height wear.......................................7-4
8. Spare parts and after sales service.........8-1
Spare Parts.........................................................8-1
Wearing parts......................................................8-1
9. Parts List ....................................................9-1

BA-45.01.0 • US •01/15 1
Foreword
Dear customer,
Your new rotary compressor/compressor and vacuum
pump is the product of intensive development, based
on decades of experience in the construction of rotary
compressors and compressor and vacuum pumps.
Our modern production methods, combined with the
fulfillment of the highest quality standards and
stringent testing, ensure reliability, high availability and
a long service life for your appliance.
This machine naturally requires correct handling,
especially under difficult operating conditions. Initial
operation, normal operation and maintenance must
therefore only be performed by properly trained and
authorized personnel.
These operating instructions contain all necessary
information, and they apply to all personnel who bear
responsibility with regard to the appliance. Only
thorough adherence to these instructions will ensure
that the appliance works correctly over a long
operating period. The complete operating instruction
manual must therefore be kept near the appliance. We
are sure you will appreciate that we are unable to
accept any liability for damage caused by not adhering
to these instructions.
Please ensure also that repairs are only carried out by
authorized service centers, using original spare parts,
as our guarantee otherwise loses its validity.
We wish you much satisfaction with the rotary
compressor or compressor and vacuum pump that has
been supplied to you by Gardner Denver. If your
questions are not satisfactorily answered, we will be
pleased to assist you at any time
Yours sincerely,
Gardner Denver Compressor Division
1800 Gardner Expressway
Quincy, Illinois 62305-9364
Phone: [phone]
Fax: [phone]
Or Visit: www.gardnerdenver.com
The first digit of illustration reference
numbers refers to the chapter in which the
illustration is to be found. Within each
chapter the illustrations are numbered in
their order of occurrence. The last digit of
the illustration reference number refers to
the item number within the illustration. Thus,
for example, the reference (7.2/3) refers to
the second illustration in chapter 7, item
number 3.
In this manual, the following symbols are used
Operational safety
Indicates possible danger to people.
Operational safety demand and thus
indicated instructions are to be followed
exactly. All users must be familiar with the
safety notes.
Environmental protection
Indicates, that attention must be paid to
environmental protection regulations.
Attention
Indicates guidelines and regulations
which prevent damage to the machine.
Information
Indicates information, which is of special
importance to the user of the compressor.

BA-45.01.0 • US •01/15 2
Principle of operation, machine versions
Operating Principle
Rotary vane compressor/vacuum pumps are multi-cell
compressors that work on the displacement principle.
They provide a constant, low-pulsation supply.
The single-phase machines have a cylindrical bored
casing. The rotor, which is also cylindrical, is mounted
eccentrically in the casing, forming a crescent-shaped
working chamber. Moveable rotor vanes are fitted in
the longitudinal grooves of the rotor; centrifugal force
causes them to glide along the side of the casing when
the rotor turns.
The vanes divide the crescent-shaped working
chamber into cells of varying sizes. When the rotor
turns, the cell volume on the suction side increases,
and the resulting under pressure draws air into the
cell, which is open to the suction nozzle. Upon further
turning, the cell closes and the cell volume decreases.
The enclosed air is thereby compressed and pushed
out on the discharge side through the delivery nozzle.
In accordance with this operating principle, the
machine works with polytropic compression. The
achievable compression ratio POUT/PIN is limited by the
final compression temperature.
Theoperatingprincipleofarotaryvanecompressor
oracompressor\vacuum pump
Machine versions
The various versions differ in their method of
lubrication and of cooling
Oil-lubricated machines are fed by means of an
automatic lube oil pump in the oil well. The rotor
shaft directly drives the lubricating pump.
Dry-running compressors for compressed air that is
absolutely oil free operate with absolutely no oiling
the compression chamber. The rolling bearings in
these machines have permanent lubrication
(permanent grease unit) or automatic lubricant
input.
In air-cooled machines, two ventilators on the rotor
shaft feed the coolant air axially via the casing
ribbing.
Water-cooled machines have a water sleeve inside
the casing. The coolant water circulates in a forced
circulation system driven by a circulation pump.
Type code
RF
W
260
DVR
Rotary vane compressor
(vacuum pump) with fresh
oil lubrication = RF
Casing cooled by
-Air cooling = L
-Water cooling = W
Size of the compressor (of
the vacuum pump)
Additional designations
-Compression operation = D
-Suction operation = V
-Clockwise operation = R
The RFW series includes, therefore, water-
cooled and fresh-oil lubricated machines for
operation as compressor/Vacuum pumps.

BA-45.01.0 • US •01/15 1-1
1. Technical data
1.1 Machine data
1.2 Dimensions
1.3 Lubrication
1.4 Water cooling
1.5 Drive methods
Machine data
The compressor/Vacuum pumps in the series RFW
are water-cooled, fresh-oil lubricated rotary vane
compressors.
On the rating plate of each machine you will find, in
addition to the machine number, the most important
data.
Figure 1-1: Rating Plate of RFW 150…260
Data for the type series
Rotary Compressor & Vacuum Pump
Type
RFW 150 DV
RFW 200 DV
RFW 260 DV
Nominal Vacuum
mbar abs
400
400
400
Operating Vacuum for continuous operation1)
mbar abs
200
200
200
Max. permitted vacuum (short-term, up to 15 min. per hour)
mbar abs
100
100
100
Max. operating pressure (gauge)
in compressor operation2)
in compressor operation with V-belt drive2)
bar g
2.0
2.0
2.0
1.5
2.0
0.5
Max. Power requirement at max. operating pressure (gauge)
kw
50
70
92
Suction pressure 400 mbar abs
Volume flow
Final overpressure
Power requirement at drive shaft
m3 /h
bar g
kW
820
0.0
23.0
1180
0.0
34.0
1540
0.0
41.0
Suction pressure 1000 mbar
Volume flow
Final overpressure
Power requirement at drive shaft
m3 /h
bar g
kW
850
0.5
30.0
1210
0.5
45.0
1570
0.5
58.0
Nominal speed
min -1
1500
1500
1500
Mass moment of inertia
kgm2
0.52
0.73
0.95
Sound pressure level at a distance of 7m. at 400 mbar / 0.5 bar
over pressure
db (A)
71/74
75/79
76/82
Weight with back pressure valve
kg
220
280
360
1) Protect with a ventilating valve!
2) Protect with a safety valve!
Data and illustrations accurate as of 01.04.1993. Subject to alterations

BA-45.01.0 • US •01/15 1-2
1. Technical data
Dimensions
Type
Unit
a
b
RFW 150
mm
200
735
RFW 200
mm
350
885
REF 260
mm
500
1035
Suction flange and pressure flange, connection for tanker flange according to DIN 28 461
1. Suction end
2. Discharge end
3. Suction flange according to DIN 28461
4. Discharge flange according to DIN
28461
5. Cooling water inlet R1”
6. Cooling water outlet R1”
7. Oil filler point
8. Oil level indicator
9. Oil drain cock
10. Vacuum intake filter/suction filter
point
11. Non-return valve
Figure 1-2: Dimensions RFW 150 –RFW 260
Lubrication
Lubrication is carried out by the built-in fixed drive lube
oil pump.
Lubricating oil specification: Single-grade oils of the
following classes:
API:
CC/SF
CD/SF
MIL-L:
2104 B
2104 C
See section 5.8, Lubrication Oils, or the lubrication oil
selection table.
Rotary vane compressor / vacuum pumps
Type
RFW 150 DV
RFW 200 DV
RFW 260 DV
Oil tank capacity
I
7.5
7.5
7.5
Oil consumption
I/h
0.33
0.40
0.48
Add oil after operating hours
h
22,5
18.5
15.5
Oil level checks per day
once
once
once

BA-45.01.0 • US •01/15 1-3
1. Technical data
Additional lubrication
For vehicles subject to extreme operating
conditions1) additional lubrication may be necessary
as illustrated in Figure 1-3. If your machine is
equipped with this type of auxiliary lubrication
feature, it must be used as follows when the
specified conditions exist:
Open the regulating tap in the oil line of the auxiliary
lubricating device
Leave the regulating tap open until ca. ¼ litre oil has
been drawn into the machine.
Note the noises produced by the machine!
The additional oil intake volume of ¼ Iitre has been
reached when the oil level in the oil sight glass has
fallen ca. 1 cm.
1. Suction line
2. Oil well
3. Regulating tap
4. Additional oil vessel
1) Extreme operating conditions exist, for example in
the following circumstances:
Surrounding temperature 35°C
Continuous operation (3 hours and more) of the
machine at 200 mbar operating vacuum or 2 bar
operating overpressure
Suction or compression of aggressive substances
(e.g., solvents, solvent vapors, acidic substances,
etc.)
Figure 1-3: Additional Lubrication

BA-45.01.0 • US •01/15 1-4
1. Technical data
Water cooling
See section 4.5 for information about recooling the
cooling water. This process should be carried out in
the vehicle by means of a forced-circulation cooling
system with rotary pumps and coolers.
Rotary Compressor and Vacuum Pump
Type
RFW 150 DV
RFW 200 DV
RFW 260 DV
Heat to be dissipated
at 0.5 bar overpressure
at 2.0 bar overpressure
at 400 mbar vacuum
kW
11.5
14.5
11.0
19.0
20.0
17.0
24.0
28.0
19.0
Required pumping capacity of water pump, at
least
at 0.5 bar overpressure
at 2.0 bar overpressure
at 400 mbar vacuum
l/min
15
20
15
25
29
24
35
40
28
Pipework dimensions
R1
R1
R1
Recommended equalizing tank
l
10
10
10
These data apply for:
Surrounding temperature 30°C
Continuous operation
Winter operation with anti-freezing compound
Summer operation without anti-freezing compound
If the anti-freezing compound remains in the cooling
system during summer operation, it is necessary to
increase the volume flow of the cooling water by ca.
15%. Otherwise the lower heat dissipation presents
the danger of overheating.
Max. Permissible cooling water temperature
in the cooling water circuit is 60°C.
Drive methods
From the vehicle engine:
By auxiliary drive and drive shaft
By V belt; the drive belt disk being mounted onto the
free end of the drive shaft
By a pneumatic shift clutch
By a hydromotor
From a diesel or electric engine
By an elastic coupling
For exact details see 4.6, drive.

BA-45.01.0 • US •01/15 2-1
2. Safety rules and notes on danger
2.1 Designated usage
2.2 Acceptance and monitoring
2.3 Operational safety
2.4 Environmental protection
2.5 ATTENTION
2.6 Information
2.7 Points to note
Designated usage
The rotary compressor or compressor and vacuum
pump is designed entirely for compression and/or
suction of filtered air. Any other or additional usage is
not deemed to be part of the designated usage.
Designated usage also includes adherence to the
operating data and the maintenance stipulations given
in the operating instructions.
Acceptance and monitoring
The machine itself is not subject to any general
acceptance and monitoring requirements.
If specific legal requirements apply at the site of
operation of the rotary compressor/compressor and
vacuum pump, the operator is responsible for
observation of these requirements.
In every case, the safety and accident prevention
regulations of the local working safety authorities must
be adhered to.
Operational safety
This symbol indicates possible dangers for
personal safety. Working safety requires
exact observation of instructions so marked.
Safety instructions must be known to all
persons who use the machine!
Environmental protection
This symbol shows that environment
protection regulations must be observed.
ATTENTION
“ATTENTION” designates regulations and
instructions which are designed to prevent
damage to the machine Information
Information
This symbol indicates information of
particular interest to the operator of the
machine!
Points to note
The rotary compressor/compressor and
vacuum pump has been constructed
according to the latest technological
standards and safety regulations. However,
during use of the machine it is still possible
that the health and life of the operator or
other persons may be endangered, or that
damage to the machine or to other property
may be caused.
Only use the machine when it is in a technically
perfect condition; such use must be carried out in
accordance with the designated usage and with due
regard for safety. In particular, any faults which are
relevant to the safety of the machine must be
repaired immediately.
Alterations, attachments or modifications to the
rotary compressor/compressor and vacuum pump
which may affect the safety of the machine are not
permissible without consulting the manufacturer.
All warning notices on the machine must be
observed, and care must be taken that all such
notices are always in a legible condition.
Attention must be paid to fire detection and
firefighting features.
Work on electrical devices must be carried out by a
qualified electrician in accordance with the electrical
and technical regulations.
All personnel who are required to work with
the machine must read the operating
instructions, especially the safety
instructions, before commencing such
work. When working on the machine, it
is too late!
Work on the machine must only be carried out when
the machine is at a standstill.
Before such work begins, measures must be taken
to prevent the drive from being switched on.
During such work, the machine must not be subject
to excess pressure or under pressure.

BA-45.01.0 • US •01/15 2-2
2. Safety rules and notes on danger
On the vehicle side: close the shut-off slide.
Bleed or vent the pressure pipe between the
machine and the shut-off slide.
Release over pressure manually at the safety
valve, or vent the machine at the ventilation valve.
Pay attention to the manometer!
The drive prevention device must only be removed
when the machine is at a standstill.
The contact prevention guard must only be
removed when the machine and the pressure pipe
are cool.
Before switching on the machine, ensure that all
safety devices are correctly in place.
For the sake of environmental protection,
all liquids which come from the machine
during maintenance work, e.g.
lubricating oil, must be collected and
disposed of in a way that does not
impair the environment.
ATTENTION
"SURFACE TEMPERATURE MAX 150°C!"

BA-45.01.0 • US •01/15 3-1
3. Transport, storage, delivery contents
3.1 Transport
3.2 Storage
3.3 Delivery contents
Symbols on the packaging:
Top
Fragile
Protect from rain
Transport
During transport it is essential that violent impact, the
use of force and careless loading and unloading
should be avoided. The machine must only be
suspended by means of the eyebolts that are firmly
screwed in.
Any transport protection mechanisms must be
removed.
Storage
Before assembly the machine should be stored in a
dry, heated room. The covers on the pressure nozzle
should remain in place until the machine is finally
installed.
The protective coating on the bare parts remains
effective for approximately 1 year. If the machine is
stored for a longer period, it must be renewed.
Delivery contents
The contents of the consignment are listed on the
delivery note. Please check it immediately for
completeness. Claims for transport damage and errors
can only be accepted if they are reported immediately
in writing.

BA-45.01.0 • US •01/15 4-1
4. Installation
4.1
Installation location and attachment
4.2
Prevention of suction intake of dirt and residue
4.2.1
Suction pipe
4.2.2
Vacuum filter
4.2.3
Safety dome
4.2.4
Safety vessel
4.3
Noise suppression (low noise installation)
4.3.1
Air noise suppression by noise suppressing oil
separator
4.3.2
Body noise isolation
4.4
Safety and monitoring features
4.4.1
Vacuum meter
4.4.2
Vacuum filter
4.4.3
Ventilation valve
4.4.4
Non-return valve
4.4.5
Thermometer
4.4.6
Safety valve
4.4.7
Manometer
4.4.8
Contact prevention
4.4.9
Oil level monitoring
4.4.10
Rotation speed monitoring
4.5
Water cooling
4.6
Drive
4.6.1
Hydromotor drive
4.6.2
Drive by flexible coupling
4.6.3
Drive by drive shaft
4.6.4
V-belt drive
1. Ventilation valve
2. Vacuum filter
3. Compressor and vacuum pump
4. Non-return valve
5. Compensator
6. Safety valve
7. Manometer
8. Thermometer
9. Silencer/oil separation vessel
10. Four-way tap
11. Safety dome with floating valve
12. Vehicle tank
13. Collection tank
14. Ventilation silencer on collection tank
15. Draining tap
16. Safety vessel with floating valve
17. Elastic mounting
18. Vacuum meter
19. Compensator
20. Oil drain pipes with covers, 4
mm diameter
Figure 4-1: Machine diagram with a compressor and vacuum pump

BA-45.01.0 • US •01/15 4-2
4. Installation
Notes
Figure 4-1 shows an example of a completely installed
compressor & vacuum pump of the RFW series.
Other installation variations are also possible.
Installation and start-up operation must only be
carried out by instructed personnel. If faults should
occur that are caused by operating errors, Gardner
Denver are not liable for guarantee claims
The machine is delivered ready-to-be-connected.
There must not be any damages due to transport.
Please make sure, that the rotor shaft can be turned
by hand; if not, contact our after-sales office.
The machine may only transported by means of the
securely fitted eye bolts.
Installation location and attachment
The installation location on the vehicle must:
be easily accessible,
be protected from dirt, gravel impact and water
splashes,
provide enough space for the connection of the
suction and pressure pipes,
provide easy access for maintenance (oil inlet
screw, oil monitoring window).
The machine is mounted by means of the 4 feet
(screw thread M12) at the top or bottom. The machine
can be screwed directly to the chassis or to the
traverse units.
The drive shaft of the rotary compressor/compressor
and vacuum pump must be mounted horizontally
(maximum permitted deviation when the vehicle is
stationary: 5°).
The compressor/compressor and vacuum pump can
be mounted in steps of 90° around the longitudinal
axis. The oil reservoir must then be disconnected and
turned so that the inlet opening is at the top and the
draining tap at the bottom. It must also be ensured that
the oil pump draws in oil at the lowest point of the oil
reservoir. It may be necessary to use a different oil
intake suction pipe. Please contact us - your after-
sales service center will be pleased to help you adapt
the appliance to your installation requirements.
Traverse mountings on the vehicle chassis must be
strong enough; thin profiles and flat metal sheets must
not be used.
The mounting points (supports for the machine feet)
must be exactly balanced. For dimensions and weights
see chapter 1, Technical data.
Prevention of suction intake of dirt and
residue
4.2.1 Suction pipe
The pipe must be non-corroding on the inside. Before
installation it must be cleaned from the inside; weld
globules, burn residue and rust must be carefully
removed.
The suction pipe must slope upwards to the machine
joint, so that condensate flows away from the machine.
For compressor/vacuum pumps and dedicated
vacuum pumps, a safety tank with a draining tap must
be fitted at the lowest point.
The suction pipe must be of a sufficient size.
Its diameter should be at least as given in
the following table.
Otherwise the machine will be overloaded.
If the suction pipe is of an incorrect size, any
guarantee provided by Gardner Denver loses
its validity.
Rotary compressor &
vacuum pump
Required minimum
diameter for suction pipe
RFW 150
DN 100
RFW 200
DN 125
RFW 260
DN 125
4.2.2 Vacuum filter (4.1/2)
The vacuum filter is fitted directly before the machine.
It protects it from contamination and suppresses the
suction noise.
When fitting the filter unit, the flow direction must be
taken into account. For maintenance purposes it must
be possible to remove the filter element.
4.2.3 Safety dome (4.1/11)
The safety dome on the vehicle tank must include not
only a floating valve, but also a swell protection device
to avoid liquid from being drawn off when the liquid
surges up.

BA-45.01.0 • US •01/15 4-3
4. Installation
4.2.4 Safety vessel (4.1/16)
The safety vessel (at the lowest point of the suction
pipe) must be so constructed that
incoming air does not directly flow onto the liquid
surface,
there is a sufficiently large settling space,
the filter element never dips into the liquid (even
filters of non-absorbent material fill up with liquid
due to capillary action).
When a vacuum filter of the type SFA-F is used, a filter
element is not necessary in the safety vessel.
The following diagram shows an optimized gravity
separator. The function must be checked as follows.
When the water volume to be separated is sucked in,
the volume must remain in the vessel,
in atmospheric suction, not more than 1 litre per
hour must be drawn in.
We will be pleased to support you in the
calculation and testing of your safety vessel.
Noise suppression (low noise
installation)
The noise level of the rotary compressors/
compressors and vacuum pumps of the RFW series is
far below the value permitted for commercial vehicles.
To preserve these values when the machine is
installed, the low noise installation is necessary.
4.3.1 Air noise suppression by noise
suppressing oil separator (4.1/9)
The combined silencer and oil separator suppresses
the exhaust noise of the compressor and vacuum
pump, and it also removes 80% to 90% of the
lubricating oil.
The silencer is installed between the machine and the
four-way tap, or in the exhaust pipe.
The noise suppressing oil separator must be
permissible for the maximum possible operating
pressure (e.g. 2 bar excess pressure if the machine is
used as a compressor).
The de-oiling element is connected by 2 or 3 oil
draining pipes to a ventilated collecting tank with a
capacity of at least 10 litres. The ventilation diameter
should be at least 1".
In the draining pipes between the oil separator and the
collecting tank, covers of 4 mm diameter are fitted.
The collecting tank must have a draining point for
condensate.
When mounting the silencer, the flow
direction must be taken into account; the oil
draining outlet must point vertically
downwards.
1. Curved inlet pipe
2. Flow absorption plate
3. Double perforated sheet
4. Draining tap
5. Two ball floats
6. Four guide rods
Figure 4-2: Safety vessel

BA-45.01.0 • US •01/15 4-4
4. Installation
4.3.2 Body noise isolation
Anti-vibration elements for the elastic mounting of the
machine on the traverse units have the effect of
insulating the body noise.
In V-belt drives, end buffers to support the belt forces
and a counter-bearing on the side of the machine
opposite the belt drive are necessary.
Rubber-metal cup element
Low-noise installation with universal drive
1. Rubber metal cup element
Low-noise installation with V-belt drive
1. Rubber-metal cup element
2. Buffer stop
3. Counterstop
Compensators in the suction line and in the pressure line effect the isolation of the body noise and prevent thermal
stresses.
4. Compensator for pressure line Kompaflex axial
compensator type F, temperature and compression-
proof
DN 100 –PN 16 for RFW 150
DN 125 –PN 16 for RFW 200 and 260
Type W for high-grade steel pipelines for welding into
the line
5. Compensator for suction line ERV-pipe connector
Type TAS with Teflon coating and vacuum support ring
DN 100 for Typ. RFW 150
DN 125 for Typ. RFW 200 and 260
Cooling water lines
Flexible hoses as cooling water lines effect sufficient
noise isolation.

BA-45.01.0 • US •01/15 4-5
4. Installation
Safety and monitoring features
The operating safety of the machine, i.e. operation
without danger, requires the following safety and
monitoring devices:
Suction side
Vacuum filter
Ventilation valve
Vacuum meter
Pressure side
Safety valve
Non-return valve
Thermometer
Manometer
Contact protection
Protection against rotating parts and burns
Machine protection
Speed monitor
Maintenance indicator on the combination air filter
Oil level safety feature
If these notes are not adhered to, the
guarantee loses its validity.
4.4.1 Vacuum meter (4.1/18)
For adherence to the permitted operating vacuum.
Fitted in the suction pipe directly in front of the suction
nozzle
4.4.2 Vacuum filter (4.1/2))
The vacuum-sealed filter protects the machine from
mechanical contamination. Fitted in the suction pipe.
When fitting, pay attention to the direction of flow and
the space required to replace the filter element.
Vacuum filter type SFA is not suitable for
excess pressure.
Vacuum filters of the series SFD are
pressure shock-proof up to 11 bar.
4.4.3 Ventilation valve (4.1/1)
The ventilation valve is the regulator for the appliance
and the safety feature in the suction pipe. It is
absolutely essential.
If the intake suction vacuum falls below the pre-set
minimum value, the ventilation valve opens and the
machine draws in atmospheric air. This serves to limit
the suction pressure to the permitted minimum
pressure, e.g. 200 mbar.
If the ventilation valve is mounted or
fitted incorrectly or interfered with, an
increase of the vacuum and the
temperature could CAUSE AN
EXPLOSION!
1. Vacuum filter SFA or SFD
2. Servo-pipe 10x1.5
3. Ventilation valve BV-DN
4. Flange fitting
5. Compressor and vacuum pump
6. non-return valve
7. To/from four-way tap
Figure 4-3: Installation of the servo-controlled
ventilation valve
The servo-controlled vacuum regulation and limitation
valve from Gardner Denver achieves the highest
standard of functional reliability and operating
precision. The setting is not dependent on the flow
rate. The compact construction facilitates simple,
space-saving installation.
4.4.4 Non-return valve (4.1/4)
The non-return valve prevents retro-flow when the
machine is switched off. It is not completely gas-tight.
In machines of the RFW series, the non-return valve is
mounted to the pressure nozzle.
Observe the direction of flow (arrow on the housing).

BA-45.01.0 • US •01/15 4-6
4. Installation
4.4.5 Thermometer (4.1/8)
The thermometer for monitoring the compression
temperature must be positioned together with the non-
return valve in the pressure pipe directly behind the
pressure nozzle (attach threaded sleeve R ½" for this
purpose). The thermometer must be inserted into the
pipe to half the pipe diameter.
The indication range of the thermometer
must cover the range from 0 to 200°C.
4.4.6 Safety valve (4.1/6)
After each compressor, a non-lockable safety valve
must be fitted (accident prevention regulation VBG
16). The valve should be designed and adjusted so
that pressures of more than 10% above the permitted
operating pressure are prevented. It must be able to
expel the entire transport capacity of the rotary
compressor/compressor and vacuum pump. The valve
must also be fitted with a manual ventilation facility.
If the ventilation valve is mounted or fitted
incorrectly or interfered with, an increase
of the vacuum and the temperature could
CAUSE AN EXPLOSION!
When fitting the safety valve, the following points must
be observed:
Installation directly behind the machine before any
other shut-off mechanism (especially the shut-off
slide),
The setting must correspond to the maximum
permitted operating pressure (cf. Machine data),
The setting must be protected from unauthorized or
accidental alteration,
The valve must not be blocked,
The safety valve must not be used to regulate the
air volume in pressure operation.
Correct function must be checked each
week by activating the manual ventilation.
4.4.7 Manometer (4.1/7)
For continuous pressure monitoring. Measurement
range conforming to the operating pressure. Mounted
directly behind the pressure nozzle.
4.4.8 Contact prevention
The drive of the machine and the hot pressure pipe
must be provided with a contact prevention
mechanism. Accidental touching of rotating or moving
machine parts must be impossible.
The surface temperature must not exceed 80°C.
4.4.9 Oil level monitoring
A monitoring device must be fitted in the oil reservoir
to indicate when the oil level is too low.
The oil level monitoring device can be
omitted if adherence to the minimum oil level
is guaranteed by the operator in
accordance with 6.2 (visual control at the oil
level window).
4.4.10 Rotation speed monitoring
A rotation speed indicator on the machine and an
indicator in the operating area are to be
recommended. For the permitted rotation speed
ranges, see 4.6, Drive.
Water cooling
A forced-circulation cooling system with air-cooled
cooler and rotary pump is necessary for re-cooling the
cooling water.
The rotary pump should be installed so that it operates
only when the compressor is running.
A thermometer must be installed in the water return.
Rotary Compressor and
Vacuum Pump
Type
RFW
150
DV
RFW
200
DV
RFW
260
DV
Heat to be dissipated
at 0.5 bar
overpressure
11.5
19.0
24.0
at 2.0 bar
overpressure
14.5
20.0
28.0
at 400 mbar
vacuum
kW
11.0
17.0
19.0
Required pumping capacity of
water pump, at least
at 0.5 bar
overpressure
15
25
35
at 2.0 bar
overpressure
20
29
40
at 400 mbar
vacuum
l/min
15
24
28
Pipework dimensions
R1
R1
R1
Recommended equalizing
tank
I
10
10
10

BA-45.01.0 • US •01/15 4-7
4. Installation
These data apply for:
Surrounding temperature 30°C.
Continuous operation.
Winter operation with anti-freezing compound
Summer operation without anti-freezing compound
If the anti-freezing compound remains in the
cooling system during summer operation, it is
necessary to increase the volume flow of the
cooling water by ca. 15%. Otherwise the
lower heat dissipation presents the danger of
overheating.
Max permissible cooling water
temperature in the cooling water circuit is
60°C.
Figure 4-4: Water cooling for a rotary vane
compressor
Drive
The rotation direction must correspond to the
direction arrow on the machine.
Permitted speed ranges:
Drive by cardan shaft 1200…1500 min-1 (rpm)
Other drive systems 1000…1500 min-1 (rpm)
It is essential to take account of the speed
ratio and reduction ratio of the drive (V belt
drive, vehicle auxiliary drive,…).
We recommend a rotation speed monitoring
device on the machine with a display in the
operating area.
In any case, the rotation speed must be
monitored after the assembly of the rotary
compressor/compressor and vacuum pump,
and an operating notice must be fitted for the
vehicle operator.
Drive by means of combustion engines must
only be used with controlled rotation speed
engines
Axial thrust from the drive must not be
transferred to the rotor shaft.
The drive elements should be fitted to the
rotor shaft with the existing thread M12.
The drive elements must not be hammered
onto the rotor shaft.
4.6.1 Hydromotor drive
For the engine allocation recommended by us, kindly
refer to our measurement sheet M 5689.3.
We will gladly supply you with the correct
mounting flange and a coupling.
The compressor side coupling section is
already mounted by us. After assembly,
the engine side coupling section must not
transfer any axial thrust to the compressor
and vacuum pump.
4.6.2 Drive by flexible coupling
In the case of direct coupling with the drive, e.g. diesel
engine, a flexible revolving coupling must be selected
in accordance with the details supplied by the engine
manufacturer. This coupling must largely compensate
the cyclic irregularity of the drive.
The coupling must be adjusted in exact
adherence to the details supplied by the
manufacturer.
1. Return line
2. Equalizing tank
3. Cooler
4. Air fan
5. Water pump
6. Drive (V-belt)
A. Alternative pipework

BA-45.01.0 • US •01/15 4-8
4. Installation
4.6.3 Drive by drive shaft
The drive shaft must
be constructed as a splined shaft,
be balanced
have the smallest possible angle and be as short as
possible.
The central axes of the drive shaft flanges must be
parallel to each other.
The drive shaft mounting flange must be fitted to the
drive shaft of the rotary compressor/vacuum pump.
The splined shaft section of the drive shaft must be
screwed to the mounting flange on the compressor
shaft.
The resulting prop shaft angle must not exceed 15° at
a rotation speed of 1500 min-1.
Do not fit the drive shaft the wrong wayround
-pay attention to the markings.
1. Drive
2. Spline shaft
3. Position marking
4. Rotary compressor
Figure 4-5: Cardan shaft
4.6.4 V-belt drive
If the engine speed must be geared up or down, a V
belt drive is to be recommended. The rated engine
speeds as in Machine data, must be observed!
The V belt pulleys listed in the following table can be
fitted directly to the free end of the shaft.
Rotary compressor/
vacuum pump
Type
RFW
150
DV
RFW
200
DV
RFW
260
DV
Belt profile
SPB
SPB
SPB
Belt pulley diameter
DW
mm
250
250
250
Max. operating
pressure
for V-belt drive
barg
2.0
1.5
0.5
Max. operating
vacuum
for V-belt drive
mbar
200
200
200
Number of belts
4
4
4
Between the V belt pulley and the housing
at least 12 mm gap should be allowed, as
the intake of cooling air is otherwise
impaired.
Assembly of the V belt drive
The parallel alignment of the axes in all planes must
be executed carefully and exactly both for the shafts
providing the drive power and for the shafts
receiving the drive power.
The belt grooves in the belt pulleys must not be
misaligned.
V belts of the correct lengths must be selected so
that the belt tension is consistent.
The belt tension is correct if the assembled and
tensioned V belts can be pressed down with the
thumb by 16 to 20 mm per 1000 mm axle span.
Because of the maximum torque, belt drive
by electric motors is not permissible.
Figure 4-6: Correct V-belt tension
1. Deflection: 16 ... 20 mm for every 1000 mm axle spacing
2. Axle spacing
Dw Belt pulley diameter: min 200 mm (8 in)

BA-45.01.0 • US •01/15 4-9
4. Installation
Mounting of V belt disks with taper-lock clamping
bushes
1. Clean and de-grease the bare surfaces. Place
the disk and the bush inside each other. Align
the holes and insert the screws loosely.
2. Push the disk with the bush onto the shaft,
align it and tighten the screws evenly and
tightly.
Dismantling
3. Take out the screws, then screw one of them
as a leverage screw into the hole with a half
thread in the bush, and tighten it. This
releases the taper-lock bush.
4. Remove the loose pulley unit by hand, without
knocking it or damaging the machine.