ROTORCOMP EVO2 User manual

ROTORCOMP VERDICHTER GmbH | A Member of BAUER GROUP [en] 07/2020
SCREW COMPRESSOR AIR ENDS
EVO2, EVO3 / EVO3-G, EVO6 / EVO6-G, EVO9 / EVO9-G,
EVO15 / EVO15-G, EVO28 / EVO28-G, EVO42 / EVO42-G
OPERATING MANUAL

© Copyright ROTORCOMP VERDICHTER GmbH, 2020
All rights reserved.
No duplication, modification or translation beyond the degree permitted by the applicable copyright laws
is permitted without prior written approval.
The information contained in this document is subject to change without prior notice.
This document is not subject to the change service.
Printed in Germany
ROTORCOMP VERDICHTER GmbH
Industriestraße 9
82110 Germering, Germany

Operating Manual - EVO® Line
[en] 07/2020 i.1
1 Foreword......................................... 1.1
1.1 General ............................................ 1.1
1.2 Scope............................................... 1.1
1.3 Change service................................ 1.1
1.4 Abbreviations ................................... 1.1
1.5 Manufacturer's information ..............1.1
1.5.1 General information............................... 1.1
1.5.2 Purpose................................................. 1.2
1.5.3 Delivery scope....................................... 1.2
1.5.4 Optional components ............................ 1.2
1.6 Warranty information,
liability disclaimer ............................. 1.2
1.7 Nameplates...................................... 1.2
2 Safety precautions......................... 2.1
2.1 Marking of safety precautions .......... 2.1
2.2 Safety regulations ............................ 2.1
2.3 General safety precautions.............. 2.1
2.3.1 Special symbols .................................... 2.2
2.3.2 Information on use of safety equipment 2.2
3 Technical Description.................... 3.1
3.1 General overview of screw
compressor air ends EVO2, EVO3,
EVO3-G, EVO6, EVO6-G, EVO9,
EVO9-G, EVO15, EVO15-G,
EVO28, EVO28-G, EVO42 and
EVO42-G ......................................... 3.1
4 Transport ........................................ 4.1
4.1 Delivery and packing........................ 4.1
4.2 Transport damage............................ 4.1
4.3 Transporting unpacked system........ 4.2
5 Installation ...................................... 5.1
5.1 Assembly ......................................... 5.1
5.1.1 Fastening screws .................................. 5.1
5.1.2 Three-point fastening ............................ 5.1
5.1.3 Pipe connections................................... 5.1
5.2 Safety precautions for installation
and assembly................................... 5.2
5.3 Installation information..................... 5.2
5.3.1 Drive......................................................5.2
5.4 Belt drive.......................................... 5.3
5.4.1 Belt tensioner with scale ....................... 5.3
5.5 Direct drive....................................... 5.4
5.5.1 Dimensions of centering flange............. 5.4
5.6 Air inlet............................................. 5.4
5.7 Air outlet........................................... 5.5
5.8 Oil cooling........................................ 5.5
5.9 Service ............................................ 5.5
6 Commissioning ............................. 6.1
6.1 Preparation for commissioning........ 6.1
6.2 Checking direction of rotation.......... 6.1
6.3 Test run ........................................... 6.1
6.4 Recommissioning
screw compressor air end system... 6.2
7 Maintenance................................... 7.1
7.1 Safety precautions........................... 7.1
7.2 Oil level............................................ 7.2
7.2.1 Oil level check via oil filler opening ........7.2
7.3 Oil change ....................................... 7.2
7.3.1 Oil change intervals ............................... 7.2
7.3.2 Oil drain point.........................................7.3
7.3.3 Filling with oil .........................................7.3
7.4 Maintenance check sheet................ 7.4
7.5 Maintenance intervals ..................... 7.5
8 Lubricants and Operating
Materials Maintenance Parts ........ 8.1
8.1 Lubricants and operating materials . 8.1
8.1.1 Oil recommendation...............................8.1
8.1.2 Topping up oil ........................................ 8.1
8.1.3 Measures at low room temperature ....... 8.1
8.1.4 Piping materials ..................................... 8.1
8.1.5 Pressure dew point of compressed air ..8.2
8.1.6 Temperatures ........................................8.2
8.1.7 Condensate damage .............................8.2
8.1.8 Cold starts.............................................. 8.2
8.1.9 Oil separation.........................................8.3
8.1.10Multigrade oil .........................................8.3
9 Technical Data and
Tightening Torques....................... 9.1
9.1 Technical data ................................. 9.1
9.2 Tightening torques........................... 9.2
10 Troubleshooting .......................... 10.1

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
i.2 [en] 07/2020

Operating Manual - EVO® Line
[en] 07/2020 1.1
1 Foreword
1.1 General
This manual contains information and regulations
for the installation and operation of the screw com-
pressor air ends EVO2, EVO3, EVO3-G, EVO6,
EVO6-G, EVO9, EVO9-G, EVO15, EVO15-G,
EVO28, EVO28-G, EVO42 and EVO42-G.
1.2 Scope
This documentation is applicable for screw com-
pressor air ends of the models EVO2, EVO3,
EVO3-G, EVO6, EVO6-G, EVO9, EVO9-G,
EVO15, EVO15-G, EVO28, EVO28-G, EVO42
and EVO42-G from delivery date.
1.3 Change service
This document is not subject to the change ser-
vice.
1.4 Abbreviations
bar (g) Operating pressure
(relative pressure in bar)
Bh Operating hours
DHV Minimum pressure valve
RC ROTORCOMP
SIV Safety valve
Min. minimum
Max. maximum
V DC Direct voltage
V AC Alternating voltage
1.5 Manufacturer's information
1.5.1 General information
This operating manual provides information on the
operating principles, installation, operation and
maintenance of the screw compressor air ends.
Read this operating manual carefully before com-
missioning the screw compressor air ends for the
first time in order to ensure proper handling, oper-
ation and maintenance from the outset.
Please observe all warnings and safety instruc-
tions.
ROTORCOMP screw compressor air ends are
carefully checked and tested prior to shipping.
When your merchandise arrives, the delivery
scope must be checked for completeness and
possible damage. Any missing parts and/or trans-
port damage must be reported immediately.
A damaged screw compressor air end must not be
put into operation under any circumstances.
Always have the operating manual available for
the operating personnel and make sure that oper-
ation and maintenance are carried out according
to the instructions.
All instructions contained in this operating manual
must be observed in the specified manner and
sequence in order to prevent injuries and damage
to the system.
The screw compressor air ends has been built
according to the latest technology and the recog-
nized safety rules.
Danger may nevertheless result for the user or
others or for the screw compressor air end system
during its use.
Any use other than described in the chapter
"Purpose" is considered improper.
ROTORCOMP shall not be liable for any damage
or injuries resulting from such improper use.
We shall not provide any guarantee whatsoever
for malfunctions and damage resulting from failure
to comply with the operating manual.
The manufacturer reserves the right to carry out
further technical developments without prior
notice.
Always specify the model and the complete serial
number from the nameplate in all correspondence.
ROTORCOMP shall assume no liability whatso-
ever for damage or injuries which occur during
handling, operation, maintenance work or repairs
due to a failure to comply with the safety instruc-
tions to proceed with the usual care and caution,
even if this is not expressly mentioned in this oper-
ating manual.

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
1.2 [en] 07/2020
1.5.2 Purpose
The screw compressor air ends are oil-injected
screw compressor air ends that form a perfectly
matched compressor unit when completed with
components from the ROTORCOMP product
range.
The sole intended use of the system is the com-
pression of atmospheric air. The screw compres-
sor air ends may only be used to compress gases
or other media following written approval by
ROTORCOMP.
The installation of the screw compressor air ends
or the assembly of these with components to form
a compressor unit may only be carried out by spe-
cialized companies with the corresponding know-
how.
The safety precautions, technical data, limits,
installation guidelines and regulations for commis-
sioning and operation specified in this operating
manual must be observed and complied with.
1.5.3 Delivery scope
ROTORCOMP supplies screw compressor air
ends in accordance with the order confirmation.
1.5.4 Optional components
ROTORCOMP offers matching components for all
screw compressor air ends for system construc-
tion. As a result, there are also matching compo-
nents for an extremely broad range of applications
and operating modes. The "Screw Compressor
Technology" catalog from ROTORCOMP is avail-
able to help you choose the right screw compres-
sor air ends and components.
Optionally available components are marked with
(optional).
1.6 Warranty information,
liability disclaimer
ROTORCOMP is a manufacturer of screw com-
pressor components and not of ready-to-operate
compressor systems.
RC shall only be answerable for any defects of
these individual components for which it is respon-
sible within the scope of the warranty conditions.
Failure to comply with the following instructions
and information shall void any and all liability. This
liability disclaimer also results in the loss of claims
for damages. This applies in particular in case of:
– Incorrect installation
– Improper use
– Operation of the screw compressor air ends
outside the specified limits (see chapter 9.1
Technical data)
– Failure to observe the safety precautions and
the usual care and caution
– Unsuitable operating materials (gases, oils)
– Formation of condensed water in the screw
compressor air ends
– Corrosion as subsequent damage
– Improper operation
– Insufficient maintenance, missing proof of
maintenance
– Use of unsuitable tools
– Failure to use genuine spare parts
– Unauthorized modifications to the screw com-
pressor module and/or its components
1.7 Nameplates
For the location of the nameplate, see Figure 3-1
to 3-3.
Should you have questions, please provide us
with the data on the nameplate. This ensures that
you receive the correct information.
Figure 1-1
Stamping for customers outside Germany
(Europe)
1. Serial No.
2. Version No.
3. Model
4. Max. operating temperature
5. Max. operating pressure
1
2
3
4
5

Operating Manual - EVO® Line
[en] 07/2020 2.1
2 Safety precautions
2.1 Marking of safety precautions
Important instructions concerning hazards to per-
sons, technical safety and their operational safety
are especially highlighted in the following.
They precede the measures to be taken and have
the following meaning:
Warning:
Indicates working and operating processes which
must be exactly complied with in order to prevent
endangering of persons. These include informa-
tion on special dangers when handling the system.
Caution:
Refers to working and operating processes which
must be exactly complied with to prevent damage
to or destruction of parts or all of the system.
Note:
Indicates special information for better handling
during operating, inspection and adjustment pro-
cesses and care work.
2.2 Safety regulations
The regulations of the respective country for put-
ting into service and operating pressure vessels
must be observed. In Germany these include:
– Directive 2014/68/EU (Pressure Vessel Direc-
tive DGRL) of 15.05.2014
– Operating Safety Ordinance (BetrSichV)
of 01.06.2015
2.3 General safety precautions
This operating manual contains important instruc-
tions and information on the installation, commis-
sioning, operation and maintenance, which must
be observed by the owner. As a result, it is abso-
lutely necessary to turn over the entire documen-
tation to the specially trained personnel of the
owner or to make it available at the operating loca-
tion prior to installation and commissioning. Prior
to installation and commissioning, the entire oper-
ating manual must be carefully read by the spe-
cially trained personnel and then kept in a safe
place. Failure to observe the safety precautions
can result in a serious hazard for the personnel,
the pressure vessel or the environment.
Observe the chapter "Manufacturer's information"
on page 1-1 of this operating manual.
The following safety instructions only refer to the
screw compressor air ends EVO2, EVO3, EVO3-
G, EVO6, EVO6-G, EVO9, EVO9-G, EVO15,
EVO15-G, EVO28, EVO28-G, EVO42 and
EVO42-G and not to the entire compressor sys-
tem.
The applicable national safety and occupational
safety regulations of the respective country in
which the system is operated must be complied
with.
The manufacturer of the compressor system is
responsible for including the necessary safety reg-
ulations for the operation of the compressor sys-
tem in the operating manual of the compressor
system.
Installation, operation, maintenance and repair
may only be carried out by authorized, trained and
qualified personnel.
The operating personnel is expected to safely use
the working technology and follow all applicable
local operating safety regulations and provisions.
The owner bears the responsibility for always
keeping the machine in safe operating condition.
Limits (pressures, temperatures, time settings,
etc.) must be permanently marked.
Should a regulation contained in this list, espe-
cially with regard to safety, not comply with legal
regulations, then the safer of the two applies.

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
2.2 [en] 07/2020
2.3.1 Special symbols
Do not operate the system without the
safety device mounted
Do not inhale compressed air from this
machine
Warning:
System can be started automatically via
remote control following a power failure
Warning:
System runs on for 30 seconds after the
"OFF" button is pressed
Watch cooling air
Warning:
Do not operate with doors open or
shrouding loose
Warning:
Hot machine parts
Warning:
Pressurized part or system
Lifting point
Warning:
High voltage
Active environmental protection
Warning on a danger point
Warning:
Danger of explosion and/or detonation
Warning:
Hazardous substances
Warning:
Flammable substances
2.3.2 Information on use of safety
equipment
Wear safety helmet
Wear safety shoes
Wear personal safety equipment
(safety goggles, protective gloves, safety
clothing, etc.) in accordance with the local
safety regulations
Read the operating manual before commis-
sioning, maintenance, service and repairs.

Operating Manual - EVO® Line
[en] 07/2020 3.1
3 Technical Description
3.1 General overview of screw compressor air ends
EVO2, EVO3, EVO3-G, EVO6, EVO6-G, EVO9, EVO9-G, EVO15, EVO15-G, EVO28,
EVO28-G, EVO42 and EVO42-G
Figure 3-1 Screw compressor air end EVO9
1. Air inlet
2. Air outlet (see installation drawing)
3. Cover plate
4. Drive shaft
5. Nameplate
6. Oil injection
7. Direction of rotation
8. Oil return line (non-return valve not integrated)
Note:
All EVO screw compressor air ends are of a similar design (except transmission versions).
5
1
3
4
7
2
6
8

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
3.2 [en] 07/2020
Figure 3-2 Screw compressor air end EVO9-G-V0 (horizontal transmission)
Figure 3-3 Screw compressor air end EVO9-G-V1 (vertical transmission)
1. Air inlet 6. Oil injection
2. Air outlet (see installation drawing) 7. Direction of rotation
3. End cover 8. Oil return line (non-return valve not integrated)
4. Drive shaft 9. Transmission
5. Nameplate
1. Air inlet 6. Oil injection
2. Air outlet (see installation drawing) 7. Direction of rotation
3. End cover 8. Oil return line (non-return valve not integrated)
4. Drive shaft 9. Transmission
5. Nameplate
5
1
34
7
2
68
9
5
1
34
7
2
6
8
9

Operating Manual - EVO® Line
[en] 07/2020 4.1
4 Transport
4.1 Delivery and packing
The system is delivered in suitable packing in
accordance with the selected shipping method
and delivery conditions.
4.2 Transport damage
Regardless of the care taken at the factory, the
screw compressor air ends may be damaged
during transport. Therefore, the screw compressor
air ends should be checked for damage following
each transport.
Caution:
A damaged screw compressor air end must not be
put into operation under any circumstances. In
case of transport damage, damage claims must
be secured in your interest by calling in represen-
tatives of the transport company promptly for
determination of damage, i.e.:
A) Damage or loss
– must be certified with a corresponding note on
the freight bill before the merchandise is
accepted. With rail transports, a record of the
facts must also be requested from the railroad.
– With postal consignments, the damage must
be certified in writing by the postal service
before accepting damaged packages etc.
B) In case of damage which cannot be recog-
nized immediately
– which are discovered during unpacking, the
carrier must be notified immediately and in
writing.
– If possible, leave packing materials and dam-
aged products in an unaltered state until the
facts are recorded.
– Above all, comply with the complaint deadlines.
Note:
Each product is checked in accordance with the
type and quantity prior to shipment. Should you
nevertheless have a reason for complaint, please
specify the Order No.

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
4.2 [en] 07/2020
4.3 Transporting unpacked system
The screw compressor air end can be moved with
a crane or with a lift truck or forklift truck when fas-
tened to a transport pallet.
Warning:
Death or serious injuries due to falling cargo!
– Observe the local safety regulations!
– Select the lifting equipment in accordance with
the total weight to be transported!
– Remove all loose or swinging parts before lift-
ing the screw compressor air end!
– Remove drive or body components before-
hand!
– Only transport the compressor air ends while
depressurized!
– When transported on a pallet, the compressor
air end must be securely fastened to it!
– Do not transport the compressor air ends on
the forks of a stacker or lift truck!
– Transport eyes are only designed for transport-
ing the compressor air ends!
– Do not stand or walk under cargo during trans-
port!
– The air end must not contain oil, connections
must be sealed with a plug or other suitable
means.
To transport on a pallet, secure the screw com-
pressor air end on the pallet with angle brackets.
Figure 4-1

Operating Manual - EVO® Line
[en] 07/2020 5.1
5 Installation
5.1 Assembly
5.1.1 Fastening screws
Figure 5-1
Threaded holes 1 are provided on the sides of the
compressor air ends. These are used for standard
fastening. Only suitable screws with a METRIC
THREAD are to be screwed into this female
thread.
In addition, there three-point fastening is also pos-
sible.
5.1.2 Three-point fastening
Figure 5-2
With screw compressor air ends driven by a V-
belt, it must be ensured that the screw compres-
sors are not twisted on the delivery side under
mounted supports. In case of twisting or deforma-
tions of the compressor air end, there is a danger
of the rotors jamming and the screw compressor
air end being destroyed.
The contact surfaces should be machined and flat.
Only three of the holes 1 present in the housing/
support feed may be used for fastening. The fourth
hole 2 is to remain clear (three-point fastening).
5.1.3 Pipe connections
Pipe connections with a female thread for a com-
pressed-air outlet, oil circulation, draining and con-
trol lines are provided on the compressor air ends.
Only fittings or screw connections with a CYLIN-
DRICAL INCH THREAD suitable for these female
threads may be screwed in.
CONICAL THREADS must be avoided, as dam-
age to the housing of the screw compressor air
end can occur when screwing in (see installation
drawing).
Caution:
The maximum permissible tightening torque for all
screw connections may not be exceeded.
VDI 2330 (see chapter 9.2 "Tightening torques")
Only screws suitable for fastening the compressor
air ends may be used for this purpose.
Consult ROTORCOMP beforehand if necessary.
1
1
1
2

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
5.2 [en] 07/2020
5.2 Safety precautions for installation
and assembly
Caution:
– To lift the compressor air ends, suitable lifting
equipment must be used which complies with
the local safety regulations.
– All blind flanges, plugs, caps and bags with
desiccant must be removed before mounting
the pipes. Screw fittings and pipe connections
must be of the correct size and must be suitable
for the respective operating pressure.
– The air drawn in may not contain any flamma-
ble, caustic, toxic or aggressive vapors or
gases whatsoever.
– Make sure that the pressure line from the com-
pressor to the recooler or air system can
expand as a result of the heat and does not
come into contact with flammable materials.
– The air intake opening must be positioned so
that objects, e.g. loose clothing of persons,
cannot be drawn in.
– No external force may be exerted on the air out-
let valve; the connected pipe connection must
be mounted torque-free.
– Covers should be removed as late as possible.
The screw compressor air end system must be
provided with a sufficiently dimensioned ground.
5.3 Installation information
Caution:
– The system must be installed at a location at
which the ambient air is as cool and clean as
possible. Never block the air inlet. It must be
ensured that the penetration of moisture with
the intake air is kept to a minimum.
– screw compressor air ends must always be
installed on a level, torsionally rigid surface and
must be aligned with a level if necessary.
In exceptional cases, e.g. with mobile systems,
these may only be operated up to a maximum
angle of inclination of 10°.
In these cases the inclined position must be taken
into account when checking the oil level and must
be carried out with particular care.
5.3.1 Drive
The compressor air ends are designed as an alter-
native for driving with electric motors, combustion
motors, hydraulic motors, etc.
The power can be transmitted indirectly via a belt
drive (V-belt, toothed belt, etc.) or directly via a
flexible coupling.
The direction of rotation, looking at the shaft, is
counterclockwise, i.e. to the left.
On the model with a transmission, the direction of
rotation, looking at the shaft, is clockwise, i.e. to
the right.
Caution:
When designing the drive, it is generally important
to ensure that the drive shaft has axial clearance
and is not loaded with axial force in both direc-
tions.

Operating Manual - EVO® Line
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5.4 Belt drive
Improper design and/or installation of the V-belt
drive can result in a considerable reduction of he
bearing life and/or to breakage of the drive shaft.
If the drive shaft breaks and/or in case of bearing
damage, ROTORCOMP can only grant a warranty
if the belt driven is properly designed and exe-
cuted.
The following information must be observed for
this purpose.
– The belt drive must not be underdimensioned.
The maximum design power for a belt drive is
contained in the technical data for the respec-
tive model.
– The belt pulley must be pushed onto the drive
shaft as far as possible and secured.
– Use a belt tensioner with a scale.
– Observe the belt tensioner and the tensioning
direction for the different belt types (V, flat,
toothed belt etc.).
– The V-belt pulleys must be balanced.
It is not permissible to drive the belt pulley onto
the drive shaft by striking it with a hammer, and
this can result in bearing damage.
– When aligning the belt drive, exact parallelism
without vertical and horizontal angular errors
must be ensured.
– A torsionally rigid base frame for the belt drive
must be installed so that it aligns exactly with
the compressor air end.
– "Fluttering" of the belt of the belt drive should
be prevented with construction measures (axis
spacing of pulleys, belt tension and stability of
the base frame and tensioner).
– Do not exceed the specified maximum power
Pmax at the drive shaft.
5.4.1 Belt tensioner with scale
Figure 5-3
The belt drive must first be correctly adjusted with
the pretension measuring device.
The tensioning element must be set to zero after
installation. This enables the correct belt tension
to be easily adjusted again without the pretension-
ing measuring device using the scale 1 on the ten-
sioning element.
1

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
5.4 [en] 07/2020
5.5 Direct drive
Caution:
Offset and angular errors result in damage to
bearings and drive shaft!
ROTORCOMP recommends installation with an
elastic coupling. The alignment of the motor and
compressor air end must be carried out according
to the instructions of the elastic coupling manufac-
turer.
A centering flange is available for the compressor
air ends for directly coupled units.
The flanged unit must be fastened stress-free on
the base frame.
5.5.1 Dimensions of centering flange
Figure 5-4
Note:
The screws 1 (8x) must be replaced with longer
screws when flanging on the transmission model.
A - Diameter of centering flange
B - Diameter of centering flange for transmission
version
5.6 Air inlet
Air filtration / Inlet air quality:
Contamination with solids with a maximum size of
5 μm according to air purity class 3 ISO 8573.
A
B
1
1
Model A [mm]
EVO2 105 f7
EVO3 115 f7
EVO6 140 f7
EVO9 163 f7
EVO15 206.5 f7
EVO28 258 f7
EVO42 275 f7
Model B [mm]
EVO3-G 115 h6
EVO6-G 150 h6
EVO9-G 182 h6
EVO15-G 182 h6
EVO28-G 170 h6
EVO42-G 200 h6

Operating Manual - EVO® Line
[en] 07/2020 5.5
5.7 Air outlet
The pressure loss at the air outlet due to air after-
coolers, fittings, piping, etc.should be as small as
possible.
Note:
Cross-sections of the outlet pipe must be gener-
ously dimensioned. Avoid pressure losses due to
elbow screw fittings.
The outlet pipe must be connected stress-free to
the outlet.
Warning:
Serious injuries and damage are possible in case
of operation without a safety valve!
Operation without a safety valve on the separator
tank is not permitted.
Note:
A possible compressed air temperature (at the
outlet) of up to 110°C/230°F requires the compo-
nents connected downstream, e.g. the com-
pressed-air hose, pressure switch, air after-cooler,
fittings, etc. to be designed for this temperature.
We therefore recommend the installation of an air
after-cooler.
When used without an air after-cooler, the high
outlet temperature must be pointed out to the final
customer.
5.8 Oil cooling
Note:
The cooler connection lines must be connected
torque-free to the oil connections.
The following information on the design and exe-
cution of the oil cooling system must be observed.
– The oil cooling system must be designed so
that the oil outlet temperature is a maximum of
105°C/220°F at the maximum intended ambi-
ent temperature.
– The oil circulation quantity is dependent on the
pressure difference between the outlet and the
inlet pressure of your application.
– The oil cooler must be installed so that it can be
cleaned easily.
– When designing the cooling system, the pres-
sure dew point graph (Figure 8-1) must be
taken into account.
If questions arise concerning the pressure dew
point, please contact ROTORCOMP.
5.9 Service
Ensure good accessibility to the service points
when installing the screw compressor air end sys-
tem in a housing:
– Oil filling point
– Oil drain point
– Removal of the separator cartridge (removal
dimensions according to offer drawing)
– Removal of the oil filter cartridge (observe the
removal dimensions specified in the offer draw-
ing)
– Easy cleaning of the oil cooler
– Replacement of the shaft seal (removal and
installation of the end cover and the bearing
race)
– Belt drive (accessibility, specifications for cor-
rect belt tension)

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Operating Manual - EVO® Line
[en] 07/2020 6.1
6 Commissioning
6.1 Preparation for commissioning
The components of the screw compressor air end
system are carefully checked and tested at the
factory. These tests ensure that the required per-
formance and checking data are complied with.
Nevertheless, the screw compressor air end sys-
tem should be observed during the initial operating
hours.
Before commissioning, it must be checked
whether the screw compressor air end system has
been properly installed.
As it is probable that there is no oil in the feed
chamber following transport and storage, 0.53 to
2.1 quarts (0.5 to 2 liters) of clean oil of the speci-
fied oil quality must be added to the system before
initial start-up in dependence on the screw com-
pressor air end size and the system. This prevents
the rotors from running dry during starting.
Caution:
With regard to commissioning, the applicable reg-
ulations of the specific country must be observed.
In Germany these include the Operating Safety
Ordinance.
The following points must be observed prior to ini-
tial commissioning:
– Be sure to observe the direction of rotation (see
chapter 6.2 "Checking direction of rotation").
– The final pressure specified on the nameplate
may not be exceeded.
– Do not switch off screw compressor air end
systems running under load at the Emergency-
Stop or main switch.
– Check the oil level.
– Before each initial commissioning and when
recommissioning after a longer shut-down of
the screw compressor air end system, always
carry out the activities described in chapter 6.4
"Recommissioning screw compressor air end
system".
– With a belt drive: check the belt tension and belt
routing (see chapter 7 "Maintenance").
– Check the position of the shut-off valve.
– Check all screw fitting and fastening screws for
firm seating.
Caution:
– Commissioning is only allowed when the sys-
tem is complete (Danger from being pulled into
the screw, hot oil and compressed air escap-
ing).
6.2 Checking direction of rotation
Direction of rotation:
Standard model rotating to the left (counter-
clockwise) looking at the shaft.
The design with a transmission rotates to the
right (clockwise)
Caution:
The direction of rotation of the screw compressor
air end must be checked during initial commission-
ing and each time changes are made to the elec-
trical supply line of the electric motor drive. For this
purpose, switch on the drive motor briefly and then
switch off again immediately.
An incorrect direction of rotation for more than
2 seconds will result in destruction in the screw
compressor air end. Reconnect the phases of the
connection cable if necessary.
6.3 Test run
Caution:
The system is discharged extremely quickly down
to the opening pressure "minimum pressure valve"
in the Stop mode, "with shut-off valve opened"!
This can result in the oil in the separating tank
foaming up.
The possible consequences include:
– Oil escaping with the discharge air
– Oil flooding the fine separator cartridges
– Compressed air containing oil when
restarting the system
Therefore, the following points must be observed
during the test run:
– Only switch off the system with the shut-off
valve closed!
– If possible, connect the system to a com-
pressed-air reservoir!
Caution:
Maintain appropriate safety distance.
There is a risk of injury if the rotors are blocked.
For safety reasons, only drive for a few seconds
during initial startup.
For safety reasons, operation in open state must
not be carried out.
Wear ear protection.

ROTORCOMP VERDICHTER Operating Manual - EVO® Line
6.2 [en] 07/2020
6.4 Recommissioning screw compressor
air end system
Screw compressor air end systems switched off,
shut-down or stored for longer than three months
cannot be put into operation again until after the
following measures have been carried out:
– Rotate the screw compressor air end in the
direction of rotation several times by hand.
– With the screw compressor air end system at a
standstill, pour 0.53 to 2.1 quarts (0.5 to 2 liters)
of oil (same oil type as in the oil separator tank)
into the air intake after removing the intake filter
or manifold, depending on the compressor size
and the system.
– Rotate the screw compressor air end again in
the direction of rotation several times by hand.
– Check the oil level in the separator tank and top
up if necessary (see chapter 7 "Maintenance").
– Test the running check function for the screw
compressor air end system for at least
15 minutes.
Warning:
The system may not be started with the feed
chamber completely filled. There is a danger of
considerable damage.
Maintain appropriate safety distance.
Here is a risk of injury if the rotors are blocked.
For safety reasons, only drive for a few seconds
during initial startup. Operation in open state must
not be carried out ear ear protection.