Edwards EOSi Series User manual

Oil-Sealed Rotary Screw Vacuum Pumps
EOSi series
INSTRUCTION MANUAL
6996022910_B Original instrucons
edwardsvacuum.com
MODEL NUMBER
EOS 1300(W)i EOS 1300Q(W)i
EOS 1600(W)i EOS 1600Q(W)i
EOS 1900(W)i

Copyright noce
©Edwards Limited 2021. All rights reserved.
Trademark credit
Edwards and the Edwards logo are trademarks of Edwards Limited, Innovaon Drive,
Burgess Hill, West Sussex RH15 9TW.
Disclaimer
The content of this manual may change from me to me without noce. We accept
no liability for any errors that may appear in this manual nor do we make any
expressed or implied warranes regarding the content. As far as praccal we have
ensured that the products have been designed and constructed to be safe and without
risks when properly installed and used in accordance with their operang instrucons.
We accept no liability for loss of prot, loss of market or any other indirect or
consequenal loss whatsoever.
Product warranty and limit of liability are dealt with in our standard terms and
condions of sale or negoated contract under which this document is supplied.
You must use this product as described in this manual. Read the manual before you
install, operate, or maintain the product.

Contents
1. Safety and compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Denion of Warnings and Cauons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 General safety precauons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Safety precauons during installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Safety precauons during operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Safety precauons during maintenance or repair. . . . . . . . . . . . . . . . . . . . . . 11
2. General descripon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Vacuum and ow rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2 Introducon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 Flow diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.4 Condensate system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.5 Regulang system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.6 Electrical system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3. Airlogic graphic regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1 Introducon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3 Icons used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.4 Main screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4.1 Funcon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.4.2 Two and four value lines screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.3 Chart views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4.4 Selecon of a main screen view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.5 Calling up menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.6 Inputs menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.7 Outputs menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.8 Counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.9 Control mode selecon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.10 Service menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.11 Modifying the setpoint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.12 Event history menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.13 Modifying general sengs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.14 Info menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.15 Week mer menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.16 User password menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.17 Programmable sengs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3.17.1 Service plan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
4. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
4.1 Reference condion and limitaons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
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4.1.1 Vacuum pump data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
4.2 Reading on display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4.3 Controller data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4.4 Electrical cable size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5. Instrucons for use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.1 Air/oil separator vessel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
6. Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.1 Dimension drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.2 Installaon proposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
6.3 Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.4 Venlaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.5 Posion the pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.6 Acclimazaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.7 Electrical connecons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.8 Pictographs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7. Opons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
7.1 Energy recovery systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.1.1 Energy recovery systems operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7.1.2 Maintenance for the energy recovery system. . . . . . . . . . . . . . . . . . 87
7.1.3 Energy recovery data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
7.2 Cooling water requirement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
8. Operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.1 Inial start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
8.2 Start the pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
8.3 During operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
8.4 Stop the pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
8.5 Taking out of operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
9.1 Prevenve maintenance schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
9.2 Oil specicaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
9.3 Drive motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
9.4 Air lter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
9.5 Oil and oil lter change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
9.6 Coolers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
9.7 Oil separator change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
9.8 Pressure switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9.9 Service kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
10. Fault nding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
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10.1 Pump faults and remedies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
10.2 Converter fault codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
10.3 Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
11. Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
12. Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
13. Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
13.1 Return the equipment or components for service . . . . . . . . . . . . . . . . . . . 124
14. Guidelines for inspecon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
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List of Figures
Figure 1: Vacuum and ow rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2: General view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 3: Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 4: Rear view (open). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5: Flow diagram of air cooled version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6: Condensate system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 7: Electrical cabinet (typical example). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 8: Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 9: Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 10: Typical Main screen (2 value lines). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11: Typical Main screen (4 value lines). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 12: Example of Event History screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 13: Dimension drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 14: Installaon proposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Figure 15: Liing slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 16: Service diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 17: Pictographs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Figure 18: Flow diagram (with energy recovery systems). . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 19: Inial start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 20: Air lter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Figure 21: Coolers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Figure 22: Oil separator change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
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1. Safety and compliance
1.1 Denion of Warnings and Cauons
NOTICE:
For safe operaon from the start, read these instrucons carefully before you install
or commission the equipment and keep them safe for future use.
Read all the safety instrucons in this secon and the rest of this manual carefully
and make sure that you obey these instrucons. The equipment must only be
operated and maintained by trained personnel in the proper condion and as
described in this instrucon manual.
Obey local and state requirements and regulaons. If you have any quesons about
safety, operaon or maintenance of the device, please contact our nearest subsidiary.
Important safety informaon is highlighted as warning and cauon instrucons. Obey
these instrucons.
WARNING:
If you do not obey a warning, there is a risk of injury or death. Dierent symbols are
used according to the type of hazard.
CAUTION:
If you do not obey a cauon, there is a risk of minor injury, damage to equipment,
related equipment or process.
NOTICE:
Informaon about properes or instrucons for an acon which, if ignored, will
cause damage to the equipment.
We reserve the right to change the design and the stated data. The illustraons are not
binding.
Keep the instrucons for future use.
1.2 General safety precauons
WARNING: AUTOMATIC RESTART
Risk of injury and damage to equipment. If the pump has an automac restart
funcon and it is set to on, the pump will restart automacally when the power is
restored aer the power interrupon.
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6996022910_B - Safety and compliance

CAUTION: RADIO INTERFERENCE
Risk of injury. In a domesc environment, the pump can cause radio interference
which requires supplementary migaon measures.
▪ Obey the work safety requirements and regulaons.
▪ Obey all the local site safety and operang procedures.
▪ If any of the statements do not match with the applicable legislaon, the stricter of
the two statements takes priority.
▪ The personnel responsible for the installaon, operaon, maintenance and repair
work must be trained and approved by us.
▪ The pump is designed for handling atmospheric air only. Other gases, vapours or
fumes must not be exposed to the pump intake or processed by the pump.
▪ Before you do the maintenance, repair, adjustment or other non-roune checks,
refer to Prevenve maintenance schedule on page 100.
▪ For units that have a supply from a frequency converter, wait for 10 minutes aer
disconnecon before you start the electrical work.
▪ Do not rely on the indicator lamps or electrical door locks. Before you do
maintenance work, disconnect and check for electrical safety with a measuring
device.
▪ Do not touch the pump intake when the pump is in operaon.
▪ Keep the pump in safe operang condion. Replace parts and accessories that are
not safe for operaon.
▪ Do not walk or stand on the pump or on its components.
Note:
1. These precauons apply to a pump that processes or uses air or inert gas. When
the pump is used with other gases, it is necessary to use more safety precauons.
2. Some precauons are general and are applicable for all types of pumps and
equipment. Some of the statements, might not apply to your pump.
3. If the installaon, operaon, maintenance, and repair is done without our prior
wrien approval, or if the pump is not installed in accordance with our
recommendaons, we will not accept liability or warranty claims in accordance
with the standard terms and condions.
1.3 Safety precauons during installaon
1. When you li the pump, make sure that:
▪ you use the correct liing equipment and you obey the local safety regulaons
▪ you ghten all the loose and movable parts before you li the pump
▪ no personnel are in the risk zone below the lied load
▪ the speed of the liing equipment is in safety limits
▪ personnel wear safety helmets in the area of overhead or liing equipment.
2. The pump is made to be installed and used inside. If the pump is installed outside,
contact us.
3. Install the pump in an area with cool and clean air.
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6996022910_B - Safety and compliance

4. Do not cause an air inlet blockage.
5. Refer to Technical data on page 60 for liquid handling capacity.
6. Remove the blanking anges, plugs, caps and desiccant bags before you connect
the pipes.
7. The vacuum connecon and discharge pipes must be of correct size and applicable
for the working pressures and temperatures.
8. Do not use frayed, damaged or worn hoses.
9. Distribuon pipes and connecons must be of correct size and applicable for the
working pressures.
10. The inlet air must have no ammable fumes, vapours or parcles (for example,
paint solvents can cause internal re or explosions).
11. The external force on the inlet and outlet connecon is 30 kg. Make sure that there
is no strain on the pipe connecons. Supports must not be installed to the external
body (canopy) of the pump.
12. If a remote control is installed, the pump must have the sign that follows:
"Danger: The machine is remotely controlled and can start without a warning." The
operator must make sure that the machine is stopped and depressurised, the
electrical isolaon switch is open and the electrical isolaon switch is locked with a
temporary warning aached before maintenance and repairs. Persons that use a
remote controlled machine must obey the necessary precauons. When you
operate the machine you must make sure that no one is working on the machine.
13. Air-cooled pump must be installed in such a way that an adequate ow of the
cooling air is available. Make sure that the exhausted air does not recirculate to the
pump air inlet or cooling air inlet.
14. For water-cooled pumps, the cooling water system installed outside the machine
has to be protected by a safety device with set pressure according to the maximum
cooling water inlet pressure.
15. The electrical connecons must be same as the applicable codes. Make sure that
the machines are grounded and protected against short circuits by fuses in all
phases. Install a power isolaon switch near the pump. You must be able to lock
the power isolaon switch.
16. The pumps with an automac start/stop system or an Automac Restart Aer
Voltage Failure (ARAVF) funcon must have the sign: "This pump can start without
warning" aached near to the instrument panel.
17. Do not remove or adjust the safety devices, guards or insulaon installed on the
pump.
18. There are pipes and parts with temperatures more than 70 ˚C (158 ˚F). Install
insulaon or guards to prevent contact with hot surfaces. All pipes and parts with
high temperatures must be clearly marked.
19. If the ground is not at or it has slope, contact the manufacturer.
20. Pump outlet air contains traces of oil mist. Make sure that the pump is compable
with the working environment.
21. If a pump is installed in a system with inlet gas‑stream temperatures more than the
maximum temperature permied, contact us. The installaon must be approved
by us before the pump is started.
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1.4 Safety precauons during operaon
1. Do not touch pipes or pump components during operaon.
2. Use the correct type and size of hose end - ngs and connecons. Make sure
that the hose is depressurised before you disconnect it.
3. Persons that use a remote-controlled machine must obey the necessary
precauons. Before you operate the machine you must make sure that no one is
working on the machine. If a remote control is installed, the pump must have the
sign that follows:
"Danger: The machine is remotely controlled and can start without warning."
4. Do not operate the pump:
▪ near ammable or toxic fumes, vapours or parcles
▪ outside the specied limit rangs.
5. Make sure that all bodywork doors are closed during the operaon of the pump.
The doors can be opened for short periods (for example, roune service
operaon). Persons must wear ear protecon when the doors are open. For pumps
without external bodywork, ear protecon must be worn near the pump.
6. Persons must wear ear protecon when the sound pressure level is equal to or
higher than 80 dB(A).
7. At regular intervals make sure that:
▪ the guards are correctly installed
▪ the guards are in the correct posion
▪ the hoses and pipes inside the pump are in serviceable condion
▪ there are no leaks
▪ the fasteners are ght
▪ the electrical leads are serviceable
▪ safety valves and other pressure relief devices are not clogged
▪ the inlet valve and the air net components (for example, pipes, couplings,
manifolds and valves) are in serviceable condion
▪ electrical cabinet air cooling lters are not clogged.
8. If warm cooling air coming out from the pumps is used in air heang systems (for
example, to warm up a workroom), take precauons against air polluon and
possible contaminaon of the breathing air.
9. Do not remove or adjust:
▪ the sound-damping material
▪ the safety devices
▪ the guards
▪ the insulaon installed on the pump.
10. The oil separator tank can be slightly pressurised. Do not open the oil ller or drain
plugs, when the pump is in operaon. Do not keep the oil ller or drain plugs open
when the pump is in operaon.
11. Do not use the pump as a compressor.
12. Do not operate the pump without installing the air intake lter.
13. In open circuit cooling water towers on water‑cooled pumps, take protecve steps
to prevent the growth of harmful bacteria (for example, legionella pneumophila).
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1.5 Safety precauons during maintenance or repair
1. Use the correct safety equipment (for example, safety glasses, gloves, safety
shoes).
2. Use the correct tools for maintenance and repair.
3. Use only genuine spare parts.
4. Do not start maintenance unl the pump is cool.
5. Aach a warning sign "Work in progress, do not start" next to the pump before you
start the maintenance or repair.
6. Persons that use a remote-controlled machine must obey the necessary
precauons. Before you operate the machine you must make sure that no one is
working on the machine. Aach a sign next to the remote start equipment as
follows:
"Danger: The machine is remotely controlled and can start without warning."
7. Before components are removed from the pump, make sure that:
▪ the pump is isolated from all sources of under and overpressure
▪ the pump is at atmospheric pressure.
8. Do not use ammable solvents or carbon tetrachloride to clean the parts. Obey the
safety precauons for toxic vapours of cleaning liquids.
9. During maintenance and repair:
A. clean the pump carefully with a clean cloth
B. install protecve covers on the parts and openings of the pump.
10. Do not weld or do any operaon involving heat near the oil system. Oil tanks must
be completely purged (for example, by steam cleaning) before you do such
operaons. Do not weld or modify the pressure vessels.
11. If there is an indicaon or suspicion that an internal part of a pump is overheated:
A. stop the pump
B. do not open the inspecon covers unl enough cooling me is completed to
prevent the risk of spontaneous ignion of the oil vapour.
12. Do not use a light source with an open ame to examine the inside of the pump.
13. Make sure that no tools, parts or other items are le in or on the pump.
14. Be careful when you handle the regulang and safety devices. Make sure that they
operate correctly. For safety, do not disconnect the regulang and safety devices.
15. Before you use the machine aer maintenance or overhaul make sure that:
▪ the operang pressures, temperatures and me sengs are correct
▪ the control and shutdown devices are installed, and they operate correctly
▪ the coupling guard of the pump drive‑sha is installed.
16. Every me the separator element is renewed, examine the discharge and the
inside of the oil separator vessel for carbon deposits. If there is excessive carbon
deposits, remove the carbon deposits.
17. Install protecon to the motor, electrical and regulang components to prevent
damage from moisture when the pump is cleaned (for example, steam cleaning).
18. Make sure that the sound‑damping material and vibraon dampers of the pump
(for example, the sound‑damping material on the body and in the air inlet and
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outlet systems) are in serviceable condion. Replace all damaged material with
genuine material from the manufacturer.
19. Do not use causc solvents which can damage the materials of the air net (for
example, polycarbonate bowls).
20. Faults or wearing of seals can cause leakage of oil lubricant. Prevent the dispersion
in soil and polluon of the other materials.
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2. General descripon
2.1 Vacuum and ow rate
A vacuum is a pressure in a system that is less than the ambient atmospheric pressure. It
can be shown in absolute terms or in eecve gauge terms:
▪ mbar(a) - the absolute pressure shows how much the pressure is above the
absolute zero vacuum.
▪ (minus) mbar(e) - the eecve or gauge pressure shows how much the pressure is
below the local atmospheric pressure.
Flow rate denions
The two ways to show the ow rate in a vacuum are:
1. The displacement or volumetric ow rate (Am³/hr)
2. Throughput or mass ow rate
Displacement/volumetric ow rate
For the relevant pressure range, when the pump operates at quasi constant motor speed
(rotaons per minute) and since the compression chambers have xed dimensions, the
same volume of air is pumped from inlet to outlet with decrease in pressure level. Over
the relevant pressure range, this makes the volumetric ow rate quasi independent of
the vacuum level. It is the expression of the ow rate inside the piping at the governing
vacuum level (Am³/hr) and is always higher than the throughput or mass ow rate.
Throughput or mass ow rate
If the volumetric ow does not change with the decrease in pressure level, the number
of molecules in the volume of air can change. The deeper the vacuum, the less number
of molecules in the same volume of air.
The mass ow rate will decrease with a decrease in (absolute) pressure. A ow rate must
be shown at a specied vacuum level when you use throughput or mass ow rate.
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Figure 1 Vacuum and ow rate
1. Pressure 2. Absolute vacuum
3. Typical pump range (400 mbar(a) to
10 mbar(a))
4. Atmospheric pressure
1. Pressure 2. Absolute vacuum
3. Typical pump range (400 mbar(a) to
10 mbar(a))
4. Atmospheric pressure
Atmospheric pressure at sea level is approximately 1 bar(a) or 1000 mbar(a). The typical
working range for the pumps is 400 mbar(a) to 10 mbar(a) (-600 mbar(e)
to -990 mbar(e)).
It is important to understand the type of reference to select a correct pressure gauge to
measure the vacuum. Note that the disncon does not maer for a pressure dierence
(delta P, example, pressure loss), since it is always the result of subtracng two pressures
(as absolute or eecve pressures).
Our pump uses volumetric ow rate to denote the performance.
2.2 Introducon
The pumps are single‑stage, oil‑sealed screw pumps driven by an electric motor. The
pumps are controlled by our controller.
The controller is aached to the front door. An electric cabinet is installed behind the
front door. The electric cabinet contains fuses, transformers, relays, etc.
The pumps use Variable Speed Drive (VSD) technology. The VSD technology helps to
automacally adjust the motor speed as necessary.
The pumps are available as air‑cooled version. The pumps have a sound‑insulated
canopy.
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Figure 2 General view
Figure 3 Front view
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Figure 4 Rear view (open)
1. Discharge connecon 2. Inlet connecon
3. Oil cooler 4. Cable entry
5. Controller 6. Emergency stop buon
7. Electric cabinet 8. Air intake lter
9. Oil lter 10. Thermostac bypass valve
11. Oil separator tank 12. Cooling fan
13. Vacuum control valve 14. Element
15. Drive motor
1. Discharge connecon 2. Inlet connecon
3. Oil cooler 4. Cable entry
5. Controller 6. Emergency stop buon
7. Electric cabinet 8. Air intake lter
9. Oil lter 10. Thermostac bypass valve
11. Oil separator tank 12. Cooling fan
13. Vacuum control valve 14. Element
15. Drive motor
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2.3 Flow diagram
Figure 5 Flow diagram of air cooled version
Air atmospheric pressure
Air/oil mixture
Oil
1. Oil cooler 2. Fan
3. Oil mist separator 4. Vacuum control valve
5. Screw element 6. Solenoid valve
7. Air lter 8. Solenoid valve
9. Oil lter
1. Oil cooler 2. Fan
3. Oil mist separator 4. Vacuum control valve
5. Screw element 6. Solenoid valve
7. Air lter 8. Solenoid valve
9. Oil lter
Air ow
The air comes in through the air intake lter and the control valve and is displaced by
the pump element. A mixture of air and oil ows into the oil separator tank. Aer
passing the air/oil separator lter, clean air, condioned to a few parts per million, is
released through the outlet.
Oil system
The oil separator tank removes most of the oil from the air/oil mixture by the centrifugal
acon. The oil separator removes the remaining oil. The oil collects in the lower part of
the oil separator tank.
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The oil system has a thermostac bypass valve. When the oil temperature is less than
80 °C (176 °F) (87 °C (189 ° F) for the oponal high‑water handling capacity versions),
the thermostac bypass valve stops the oil supply from the oil cooler.
The air pressure pushes the oil from the oil separator tank through the oil lter. The oil
cooler is bypassed. When the oil temperature increases up to 80 °C (176 °F)
(87 °C (189 °F) for the oponal high‑water handling capacity versions), the bypass valve
starts the supply from the oil cooler. At approximately 95 °C (203 °F) (104 °C (219 °F) for
the oponal high‑water handling capacity versions), all the oil ows through the oil
cooler. The ltered oil ows into the pump element.
Cooling
The cooling system has an oil cooler. The fan blows air over the coolers. The fan is set to
on or o, depending on the operang condions, as per the specic algorithm.
2.4 Condensate system
When discharge pipes are used, water in the discharge air can condense in the pipes.
This water is collected in the collector of the outlet pipe where a drain point is available.
Inially, the drain point is connected to the external valve. Prevent condensate collecon
in the oil separator to extend the oil life. Refer local regulaons which are applicable for
water drainage.
Figure 6 Condensate system
1. Drain point 2. External valve1. Drain point 2. External valve
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2.5 Regulang system
If the vacuum process demand is less than the throughput of the pump, the vacuum
pressure decreases. When the pressure is lower than the set‑point (necessary vacuum
pressure), the regulator decreases the motor speed.
If the vacuum pressure decreases and the motor operates at minimum speed, the
regulator stops the motor. When the motor is stopped automacally and the vacuum
pressure reaches the set‑point, the regulator starts the motor again.
Q-version
The regulaon system of the Q-version is designed to handle fast cycling dues. When
the vacuum pressure reaches the set-point, the regulator will keep the motor running at
increased speed for an adjustable me before the regulator decreases the motor speed.
2.6 Electrical system
Electric components
Figure 7 Electrical cabinet (typical example)
1. Transformer (T1) 2. Circuit breaker (Q1)
3. Circuit breaker (Q15) 4. Contactor (K15)
5. Frequency converter (Z1) 6. EMC lter (U1)
1. Transformer (T1) 2. Circuit breaker (Q1)
3. Circuit breaker (Q15) 4. Contactor (K15)
5. Frequency converter (Z1) 6. EMC lter (U1)
Electrical diagrams
You can nd the electrical diagram in the electric cabinet.
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3. Airlogic graphic regulator
3.1 Introducon
The controller automacally changes the motor speed to keep the pressure in
programmable limits.
The funcons of the controller are as follows:
▪ to control the pump
▪ to protect the pump
▪ to monitor the components and their service life
▪ ARAVF (not in operaon).
Automac control of the pump operaon
The controller automacally changes the motor speed to keep the pressure in
programmable limits.
The pump has dierent programmable sengs. For example:
▪ the set point
▪ the minimum stop me
▪ the maximum number of motor starts.
All the dierent programmable sengs are used for the operaon of the pump.
The controller:
▪ stops or decreases the speed of the pump to decrease the power consumpon
▪ restarts the pump automacally when the pressure decreases.
The high water‑handling‑capability pumps have a purge cycle. The purge cycle stops and
removes condensed water from the sealing oil.
Note:
A number of me‑based automac start/stop command can be programmed. A start
command will be executed (if programmed and acvated), even aer manually stopping
the pump.
Protect the pump
Shutdown
The pump has sensors to detect the pump performance parameters. If any parameter is
more than the programmed shutdown limit, the pump will stop. A fault code will be
shown on the display and a general alarm LED ashes. To restart the pump you must
correct the fault and reset the fault code. Refer to Inputs menu on page 30.
Shutdown warning
A shutdown warning limit is a programmable limit below the shutdown limit.
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