LEYBOLD DRYVAC DV 200 User manual

Part Numbers
112020V15 /19 /25 /29
112030V11 /15 /19 /25 /29
112050V15 / V19
DRYVAC
DV 200, DV 300, DV 500
Dry Compressing Vacuum Pumps
with synthetic oil or PFPE filling
Operating Instructions 300750767_002_C3
5th draft w/o CE
Dec. 11th
English

Contents
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Page
0 Important Safety Information 5
Explanation of Safety Symbols 5
0.1 Mechanical Hazards 6
0.2 Electrical Hazards 8
0.3 Thermal Hazards 8
0.4 Danger through materials and substances 9
0.5 Noise Hazard 9
ATEX directive implications 10
Classification and Marking of the Pump 10
Areas of Application 10
Conditions of safe use 10
1 Description 12
1.1 Design 12
1.2 Supplied Equipment 12
1.3 Technical Data 13
1.4 Ordering Information 17
1.4.1 Pumps 17
1.4.2 Accessories 17
2 Transport and Storage 18
3 Installation 20
3.1 Placement 21
3.2 Conforming Use 22
3.2.1 Non-conforming Use 22
3.3 Connecting the Intake and Exhaust Lines 23
3.3.1 Intake Lines 23
3.3.2 Exhaust Lines 24
3.4 Connecting Cooling Water 25
3.4.1 Water Quality 26
3.5 Connecting Purge Gas 27
3.6 Electrical Connection 29
3.7 Leak Search after Installation 35

Contents
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These Operating Instructions are a translation of the German original
instructions 300750767_001_C3.
4 Operation 36
4.1 Media Compatibility 37
4.2 Interfaces 37
4.2.1 Remote interface X103 37
4.2.2 RS-485 interface X104 37
4.2.3 Profibus Interface 40
4.3 Start-up 41
4.4 Operation 41
4.4.1 LED Display and Control Unit 42
4.4.2 Option: Changing the Speed of the Pump 45
4.4.3 Warning and Shut-off Thresholds 46
4.4.4 Gas Ballast Operation 47
4.4.5 Pumping of 100% Argon 47
4.5 Shut-off and Venting 47
4.6 Removing from Service 48
5 Maintenance 49
5.1 Leybold Service 49
5.2 Maintenance Intervals 50
5.3 Changing the Oil 50
6 Troubleshooting 52
6.1 Pump Malfunctions 52
6.2 Fault and Alarms Displayed at the Frequency Converter 53
7 Wearing Parts 60
8 Waste Disposal 60
EU Declaration of Conformity 61

Safety Information
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Obligation to Provide Information
Read and follow these installation and operating instructions carefully
before installing and commissioning the pump to ensure optimum and safe
operation right from the start.
Leybold DRYVACs guarantee safe and proper operation when used correct-
ly and in accordance with the instructions contained in these operating
instructions. Please read all safety instructions in this section and the rest of
this manual carefully and make sure that these instructions are followed. The
device may be operated and maintained only by trained personnel in
the proper condition and as described in the operating instructions.
Also observe local and state requirements and regulations. If you
have any questions regarding safety, operation or maintenance of the
device, please contact our nearest subsidiary.
“Trained personnel” for the operation of this pump are
■skilled workers with knowledge in the fields of mechanics, electrical engi-
neering and vacuum technology, and
■personnel specially trained for the operation of vacuum pumps.
DANGER indicates a hazard with a high risk potential. If the danger is not
avoided, it will result in serious injuries or death.
WARNING indicates a hazard with an average hazard potential. Failure to
follow the warning may result in serious injury or death.
CAUTION indicates a hazard with a low hazard potential which, if not
avoided, may result in minor or moderate injury.
Information about properties or instructions for an action which, if ignored,
will cause damage to the pump or the system.
We reserve the right to change the design and the stated data. The illustra-
tions are not binding.
Keep the instructions for future use.
NOTICE
DANGER
WARNING
CAUTION
NOTICE

Safety Information
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0 Important Safety Information
Explanation of Safety Symbols
General warning sign
Warning of counter-rotating rollers
Warning of automatic start-up
Warning of danger of slipping
Warning of electrical voltage
Warning of hot surface

Safety Information
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0.1 Mechanical Hazards
1 Loss of stability during transport. Uncontrolled movement due to incor-
rect attachment / lifting / carrying / rolling or movement of the vacuum
pump.
Only use the attachment points and conveying means described in this
manual for vertical and horizontal conveying.
2 Ejection of parts through bursting of vacuum system as a result of
excessive pressure caused by clogged or constricted exhaust.
Pressure build-up in the vacuum system or exhaust pipes.
Do not start up or operate the vacuum system with the outlet closed
or throttled.
3 Ejection of parts through bursting of vacuum system due to excessive
pressure, caused by faulty function at the gas inlet into the vacuum
system.
Pressure build-up in the vacuum system or inlet lines.
Check correct connection of inlet and outlet flanges before commis-
sioning. The inlet pressure at the suction port of the vacuum system
must not exceed atmospheric pressure. If seal gas or gas ballast from
pressure vessels is used, secure the supply in such a way that no
overpressure can occur in the vacuum system in the event of a fault or
power interruption
4 Ejection of parts through bursting of vacuum system as a result of
excessive pressure caused by the pump running backwards after it
has been switched off under vacuum.
Danger of overpressure in the inlet lines and recipients as well as
uncontrolled backward running of rotors.
In the event of a fault or during service, separate the vacuum pumps
from the vacuum vessel and connecting lines before the inlet by means
of suitable valves.
5 Risk of cutting and cutting off by contact with moving parts such as
couplings, shafts and rotors.
Risk of cutting and crushing when reaching into open flanges or cov-
ers.
Do not operate the vacuum pump with open flanges or covers. When
installing, first mechanically connect the inlets and outlets, close the
covers of rotating parts and then make the electrical connections.
Disconnect the vacuum pump from the power supply before servicing.
Only use trained service personnel.
NOTICE
WARNING
WARNING

Safety Information
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6 Failure or malfunction of the central control system (unexpected start-
up) or danger of a pump restarting automatically after switching off due
to a fault.
Risk of crushing, cutting or cutting off by touching moving parts due to
recurring start command or power supply.
Before carrying out maintenance or service work, disconnect the
pump from the power supply, secure it against being switched on
again, determine that it is de-energised, ground and short-circuit it and
cover / isolate adjacent live parts.
7 Pulling into the vacuum system.
Pulling in of body parts and objects into the vacuum through open
flanges.
Do not operate the vacuum pump with open flanges. When installing
the vacuum pump, first mechanically connect the inlets and outlets
and then make the electrical connections.
8 Danger due to incorrect connection of the pump to the system to be
pumped out. Pressure build-up in the vacuum system.
Check correct connection of inlet and outlet flanges before commis-
sioning. When using the pump with seal gas, protect the seal gas sup-
ply so that no overpressure can occur in the pump system in the event
of a malfunction or power interruption.
9 Slipping, tripping or falling as a result of oil leaking from the pump. Oil
can escape from the vacuum pump during pumping or depending on
the work process. Risk of falling on oil spills!
Check the vacuum pump regularly for oil leaks. Take the appropriate
safety measures
WARNING
CAUTION
CAUTION

Safety Information
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0.2 Electrical Hazards
1 Electrical shock caused by direct or indirect contact with live parts.
Electrical shock due to faulty electrical connection and possible residu-
al voltage up to 5 minutes after disconnection from the mains.
The electrical connection may only be carried out by a trained person.
Observe the national regulations in the user country, e.g. for Europe
EN 50110 - 1. Prior to servicing, disconnect the vacuum pump from
the power supply.
2 Electrical shock due to interruption of the protective conductor system.
In the event of a fault, life-threatening voltages may be present on
electrically conductive components.
Before commissioning, check the resistance of the earthing cable and
the suitability of the assigned overcurrent protection device.
3 Lightning strike.
Risk of fire and injury from lightning strike.
Do not use pumps and pumping systems outside of buildings. The
operator is responsible for assessing the hazard potential when used
outside of buildings.
0.3 Thermal Hazards
1 Burns caused by touching hot surfaces.
Burning of fingers, hands or arms on hot surfaces.
Handle the pump only when ventilated and cooled down.
Wear suitable protective equipment.
Install a barrier around the pump to prevent accidental contact with
hot surfaces. The barrier must only be removable with tools.
2 Scalding by contact with hot equipment or lubricants. Danger of scald-
ing when opening the hot pump with hot operating fluid or cooling
water!
Only open the outlet or inlet port for operating media if the operating
medium has adapted to the room temperature. Wear suitable protec-
tive equipment.
DANGER
CAUTION

Safety Information
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0.4 Danger through materials and substances
1 Danger due to a sharp increase in pressure due to the decomposition
of pumped gases. Uncontrolled emission of process gases by reaction
products within the pump.
The pumping of reactive gases, vapours or gas mixtures is generally
prohibited. The operator is responsible for assessing the hazard poten-
tial of the process media or mixtures.
2 Danger of escaping or emitting pumped hazardous gases, vapours or
substances. Pumped process gases may escape from the exhaust
and leaks in the vacuum system. The pumping of toxic / explosive /
flammable / pyrophoric / radioactive / oxidizing / corrosive gases or
gas mixtures, as well as oxygen of more than atmospheric concentra-
tion (21 %) is generally prohibited. The operator is responsible for
assessing the hazard potential of the process media or mixtures.
3 Some pumps use perfluoropolyether (PFPE) as lubricant.
When handling PFPE you should observe the following:
During thermal decomposition at temperatures over 290 °C toxic and
corrosive gases are released. When handling PFPE keep it away from
open fires. Do not smoke with PFPE on your fingers.
Touch the inner sections of the pumps only while wearing clean gloves,
and use clean tools;
do the necessary work in clean and dry rooms;
after having removed the pump from its packaging, start it up as
quickly as possible;
as cleaning agents solvents based on hydrofluorether compounds may
be used.
4 Fluoropolymers are used as sealants (FKM) and as lubricants (PFPE) in
the pumps. In case the pump suffers a severe mechanical failure, the
possibility of hazardous substances being released owing to their ther-
mal decomposition cannot be excluded. The hazards caused by such
decomposition are described in the Material Safety Data Sheets for the
materials, for example.
0.5 Noise Hazard
1 Hearing loss due to high noise levels.
Depending on the operating conditions, higher noise levels can be
reached than specified in the technical data. Take suitable hearing pro-
tection measures.
Pressure values in bar or mbar are absolute pressures, unless expressly stat-
ed otherwise (e.g. bar(g)).
DANGER
CAUTION

ATEX
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ATEX directive implications
Pumps which carry the ATEX mark are designed to meet the requirements of
Group II Category 3G in respects to ignition sources internal to the pump.
This classification is in accordance with Directive 2014/34/EU.
Classification and Marking of the Pump
The pump is marked as follows:
 II3/-GExhIICT3Gc(5°C≤Ta≤50°C)
(internal atmospheres only)
Modifying the supplied pump, voids the CE and ATEX Declaration of
Conformity.
Key to the Symbols
ATEX logo
.. / .. Means that the product has two different categories
-means that a part of the product does not comply with the directive
and has not been intended for utilisation within an explosion hazard
area.
II 3/- G (Gc) The pump may suck off gases from Zone 2, is however to be
installed outside explosion hazard areas.
hThe code letter “h” is valid for all nonelectric devices.
IIC Explosion group
T3 Temperature class. Pumps belonging to temperature class T3 must
only be operated with gases or vapors which exhibit an ignition tem-
perature of over 200 °C.
Ta Permissible ambient temperature for operation of the pump:
5°C≤Ta≤50°C.
Areas of Application
The inside (process gas side) of this vacuum pump is so rated and designed
that the occurrence of foreseeable ignition sources can be excluded during
normal operation. Provided the pump is operated in accordance with the
parameters specified in the Operating Instructions the pump will offer a nor-
mal degree of protection. For this reason it is suited for operation under con-
ditions where it is unlikely that an atmosphere capable of exploding is created
by gases, vapours or mists in the air or if such atmospheres do occur then
this only rarely and only briefly (i.e. Zone 2).
The pump itself must not be installed and operated in explosion hazard
areas.
Conditions of safe use
The DRYVAC pump must be operated in accordance with the definitions of
normal use and operational limits as specified within this manual.
DANGER
For Part No. 112030V11

ATEX
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Accessories and additional parts fitted to the DRYVAC must fulfil the require-
ments of the ATEX Directive 2014/34/EU regarding the equipment group and
category and they must be applicable for use in explosive atmospheres of
the respective gas group and temperature class.
The mandatory safety instruments specified in this manual must be used and
must not be replaced with alternatives from other manufacturers without con-
sultation with Leybold.
DRYVAC pumps must only be used on processes if their materials resist the
mechanical and/or chemical influences and corrosion, under the respective
operating conditions, so that the explosion protection is always maintained.
Do not clean the pump by means of dry cloths in order to avoid electrostatic
charge on non-dissipative materials. Processes generating intensive charge
must not be operated close to the DRYVAC.
Means for preventing backflow of the pumped media must be used if back-
flow can result in process hazards.
Opening the DRYVAC is only permitted with the pump switched off, isolated
from the electrical supply and in the absence of explosive atmosphere.

Description
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1 Description
1.1 Design
The DRYVAC DV 200, DV 300, and DV 500 are single-stage dry compressing
screw vacuum pumps. They have optimized pumping speeds even at pres-
sures>100mbar.Thesemodelsareespeciallysuitedforshortcycleopera-
tion, e.g. load lock applications.
DRYVAC pumps are equipped as standard with all the typical features
required for applications in the process industry. For example, they have a
gas ballast device.
DRYVAC pumps are designed to provide reliability in harsh process duties.
They are optimized for handling typical gases from the production in the PV
and FPD industry. They excel through their robust design and meet industrial
safety requirements. They are equipped with a purge gas system that makes
possible rotor purge and shaft seal purge.
The DV 200 and DV 300 have the same motor. The required frequency con-
verter is installed at the pump.
All DRYVAC pumps have been prepared for direct fitting of a RUVAC roots
pump.
The pumps are water cooled. They are lubricated either with synthetic oil or
PFPE.
If synthetic oil and PFPE come into contact with each other they will emul-
sify. That’s why the pumps must only be run with the type of lubricant
specified for the pump. If you want to change the type of lubricant please
contact Leybold.
1.2 Supplied Equipment
■Pump as described in Sections 1.1 and 1.4.1.
■The pumps are filled with lubricant:
Synthetic oil LEYBONOL LVO 210 or PFPE LEYBONOL LVO 410
■The pumps are purged with nitrogen for protection against corrosion. The
pump flanges have been blanked off with a sealing cap.
■4x crane eyes M16
■Plug for purge and gas ballast valve
■Plug for purge gas pressure switch
NOTICE

Description
13300750767_002_C3 - 12/2020 - © Leybold
1.3 Technical Data
DRYVAC DV 200 300 500 Tolerance
Maximum pumping speed without gas ballast 210 m3/h 280 m3/h 460 m3/h ± 5 %
Ultimate partial pressure
with purge gas for shaft seal inlet & outlet
with gas ballast
< 0.05 mbar
< 0.8 mbar
< 0.01 mbar
< 0.5 mbar
Maximum permissible inlet pressure 1,050 mbar
Max. perm. discharge pressure
(relative to ambient)
+200 mbar
Integral leak rate < 10-4 mbarl/s
Water vapour tolerance
with purge and gas ballast
50 mbar
> 20 Nl/min
Water vapour capacity 5 kg/h
Permissible ambient temperature +5 to +50 °C
Storage temperature -30 to +60°C
Contamination grade with/without purge 2/3
Overvoltage category 3
Noise level with silencer, at ultimate pressure
(acc. to DIN EN ISO 2151)
65 dB(A) KpA=0.3dB
Noise level with rigid exhaust pipe, at ultimate pres-
sure (acc. to DIN EN ISO 2151)
65 dB(A) KpA=0.3dB
Relative atmospheric humidity 95%, non-condensing
Installation location up to 2000 m (NHN) *
Cooling Water
Mains voltage1)2) 380-460 V or 200-240 V ± 10 %
Frequency 50/60 Hz ± 5 %
Phases 3-ph
Rated power (motor shaft) 7.5 kW 11 kW ± 0.5 kW
Max. current
at 380/ 400 /460 V
at 200/ 240 V
13.2 / 12.4 / 11.1 A
23.0 / 20.2
14.5 / 13.8 / 12.3 A
28.7 / 23.2
21.5 / 20.9 / 18.5 A
42.2 / 37.5
Motor efficiency class calculated and configured
acc. to EN 60034-30
IE3
Power consumption at ultimate pressure 4.1 kW 4.5 kW 4.4 kW
Mains fusing / characteristic
at 400 V
at 200 V
16 A (C type)
32 A (C type)
32 A (C type)
50 A (C type)
Short-circuit interrupting capacity3) < 30 kAeff
Connectable conductor cross-section, max. 6 mm210 mm2
Switching frequency of the frequency converter max. 15 kHz

Description
14 300750767_002_C3 - 12/2020 - © Leybold
DRYVAC DV 200 300 500 Tolerance
Speed 6,600 rpm 7,500 rpm
Min. permissible speed4) 1,200 rpm
Protection class IP 54***
Lubricant filling LVO 210 or LVO 410
Total lubricant quantity 1.0 l
Intake flange DN 63 ISO-K
Discharge flange DN 40 ISO-KF DN 63 ISO-K
Materials
components in contact with gas in the
pump chamber
Materials sealing the pump off in the
pump chamber towards the outside
Grey cast iron, graphite cast iron, FKM, steel,
stainless steel
FKM, grey cast iron, steel, stainless steel, PTFE
Weight, approx. 370 kg 490 kg
Water
Water connection G1/2˝
Water temperature 5°C−35°C
Minimum supply pressure 2 bar(g)**
Maximum supply pressure 7 bar(g)**
Nominal flow 8 l/min
Purge
Connection Ø D10
Nominal setting pressure Purge gas
(at nominal flow, valves open)
2.2 to 3.0 bar(g)** ± 5 %
Permissible setting pressure Purge gas (at purge
gas flow)
2.2 to 3.5 bar(g)** ± 5 %
Permissible supply pressure Purge gas 4.0 to 10.0 bar(g)** ± 5 %
Purge gas flow shaft seal / rotor 6 l/min ± 10 %
Max. Gas ballast flow
(Pinlet < 10 mbar) 5) 100 l/min ± 10 %
Notes to the technical data
* The frequency converter standard ratings are valid for an installation altitude up to 1000 m.
If the altitude exceeds 1000 m both the input voltage and the rated output current must be derated for 1% per 100 m.
1) In the case of mains voltage drops or interruptions (brownouts) up to two seconds, operation is maintained and no error message is output. For
mains voltages over 460 V this duration may be shorter.
2) Mains power grids: TN Systems, TT systems (earthing at the star point); for other types of mains power grid please consult us.
3) The pump is not suited for electric circuits capable of delivering a current in excess of 30 kA (rms) at maximum mains voltage.
4) The minimum permissible speed is relevant for the oil lubrication of bearings and gears. Running the pump at less than the minimum speed for
more than 1 hour can cause damage to the pump due to a lack of lubrication.
5) The gas ballast flow may vary due to different conditions!
The gas ballast flow through the DV pump is much dependent on the inlet pressure!
**bar(g): bar (gauge) is the overpressure, i.e. atmospheric pressure = 0 bar(g)
*** equivalent

Description
15300750767_002_C3 - 12/2020 - © Leybold
Fig. 1.1 Pumping speed curves DV 200, DV 300, and DV 500
0
50
100
150
200
250
0,001 0,01 0,1 1 10 100 1000
Pumping Speed
Inlet Pressure
0,001 0,01 0,1 1 10 100 760
mbar
Torr
m3/h
0
50
100
150
cfm
DV 200
DV 300
DV 200
Power Consumption
300
350
400
450
500
200
250
DV 500
Pumping Speed
DV 500
DV 300
0
2
4
6
8
Power consumption
10
12
kW
14
16
18
Fig. 1.2 Permissible gas inlet temperature as function of the inlet pressure
0
50
100
150
200
250
300
10 100 1000
Gaseinlasstemperatur TEin °C
Gaseinlassdruck pEin mbar
Zulässiger Bereich: Unterhalb der Kurve
für 50 mbar ≤ pE ≤ 500 mbar gilt:
TE= -190 · lg(pE) + 572,8 in °C
pETE
mbar °C
< 50 250
50 250
75 217
100 193
125 174
150 159
200 136
250 117
300 102
350 89
400 79
450 69
500 60
> 500 60
50 500
Gas inlet temperature TE(°C)
Permissible range: under the curve.
for50mbar≤pE≤500mbarapplies:
TE= -190 · lg(pE) + 572.8 in °C
Gas inlet pressure pE(mbar)

Description
16 300750767_002_C3 - 12/2020 - © Leybold
Fig. 1.3 Dimensional drawing DV 200, DV 300 & (DV 500), dimensions in mm
484 (602)
422
170
113
1115 (1225)
502613 (731)
448 (558)
266
14
78
269 77
211
478
612
392 (502)
60
94
39
192
282
35
434
153
408
408
408
28,5
118
356 (474)
224
442
279±20
138±20 (150±20)
172±20
E1
Ansicht/View E1 4x Ø 17 mm
4x M16
ISO 63
DN 40 ISO-KF
(DN 63 ISO-K)
G 1/2“ Water out
Ø 10 mm Purge
G 1/2“ Water in

Description
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1.4 Ordering Information
1.4.1 Pumps
DRYVAC Industrial (synthetic oil) ATEX Part No.
DV 200, 400 V — 112020V15
DV 200, 200 V — 112020V19
DV 300, 400 V Cat. 3i 112030V11
DV 300, 400 V — 112030V15
DV 300, 200 V — 112030V19
DV 500, 400 V — 112050V15
DV 500, 200 V — 112050V19
DRYVAC PFPE Part No.
DV 200, 400 V 112020V25
DV 200, 200 V 112020V29
1.4.2 Accessories
Part No.
DV 200/300 DV 500
Synthetic ester oil, LEYBONOL LVO 210, 5 litres L21005
PFPE LEYBONOL LVO 410, 1 litre L41001
Profibus module for DRYVAC DV / DV-r 155212V
ProfiNet module for DRYVAC DV / DV-r 112005A35
EtherCAT module for DRYVAC DV / DV-r 112005A36
Relay module (digital output) for DV / DV-r 112005A01
Ethernet module (dual port) for DRYVAC DV / DV-r 112005A02
RS485/USB cable for interface X104, 1.8 m 161820USB
Adapter for
RUVAC WHx501/WH700 112004A03 112003A03
RUVAC Wx(U)1001 112004A04 112003A04
RUVAC Wx(U) 2001 112004A05 112003A05
RUVAC WH(U) 2500 112004A07 112003A07
RUVAC WH(U) 4400/7000 112003A10
Non-return valve DRYVAC, DN 40 KF
(must only be installed vertically)
Elbow 90° DN 40 KF, stainless steel
115005A01
88464
112003A14
–
Silencer, DN 40 KF 115005A21 –
Flush-Kit / SV 112004A33
Inlet Purge Kit / SV 112004A34
GSD file and manual for the Profibus interface see Leybold homepage

Transport and Storage
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2 Transport and Storage
Loss of stability during transport.
Uncontrolled movement due to faulty attaching/lifting/carrying/rolling or
moving the vacuum pump.
For vertical and horizontal transport, use only the attachment points and
transport means described in this manual.
The pumps are supplied filled with synthetic oil or PFPE. For this reason
they should, while being transported or shipped, not be subjected to much
tilting (10° max.). Store the pumps only horizontally standing on their feet.
Lift the pump at the crane eyes. Use all crane eyes, see Fig. above. The
pump can also be transported with a fork lift. Ensure that it cannot tip over.
Storage
Store the pumps only horizontally standing on their feet.
Open the pumps only immediately before installing them.
If there is the danger of frost, the cooling water must be drained, see
Section 4.6 Removing from Service .
DANGER
NOTICE
NOTICE
Fig. 2.1 Lifting the DRYVAC
max. 45°
4x crane eyes
max. 45°

Transport and Storage
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You may use a water glycol mixture of up to 30 % .
Temperature (only for storage without cooling water!) –30 °C to +60 °C
Storage site dry
Maximum atmospheric humidity 95 %, non-condensing
The pump must be stored at the most for one year only. Longer storing with-
out turning the rotors will damage the bearings. Connect the pump to oper-
ate it briefly and then decommission it as described in the following sections.
(The intake flange can stay sealed during this brief operation, the exhaust
flange must be opened.)
Capacitor forming – What has to be observed when an inverter
was in storage for more than 2 years?
If an inverter has been stored for a time longer than two years, it should not
be connected directly to the power line. Doing so might permanently damage
the capacitors.
Instead the DC bus of the inverter should be connected to a DC power
¬source including a current limiting resistor and the voltage should be raised
slowly. This kind of process is called capacitor forming.
In case a DC power source is not available, the DC bus of a second inverter
connected to a variable AC power supply could be used to supply the ¬vari-
able DC voltage.
Fig. 2.2 Capacitor forming
VDC
Resistor
10 ohm
Inverter
+1
-
3 min. or more 40 min. or more
VDC : 360V (for 200V class)
720V (for 400V class)
Time
Voltage

Installation
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3 Installation
Risk of cutting and cutting off by contact with moving parts such as cou-
plings, shafts and rotors.
Risk of cutting and crushing when reaching into open flanges or covers.
Do not operate the vacuum pump with open flanges or covers. When
installing, first mechanically connect the inlets and outlets, close the covers
of rotating parts and then make the electrical connections. Disconnect the
vacuum pump from the power supply before servicing. Only use trained
service personnel.
Ejection of parts through bursting of vacuum system due to excessive
pressure, caused by faulty function at the gas inlet into the vacuum sys-
tem.
Pressure build-up in the vacuum system or inlet lines.
Check correct connection of inlet and outlet flanges before commissioning.
The inlet pressure at the suction port of the vacuum system must not
exceed atmospheric pressure. If seal gas or gas ballast from pressure ves-
sels is used, secure the supply in such a way that no overpressure can
occur in the vacuum system in the event of a fault or power interruption.
WARNING
WARNING
Fig. 3.1 Connections to the DRYVAC DV 200/300/500
Auspuff
Wasser AUS
Wasser EIN
Einlass
Purge-Gas
Erdung
M6
Strom & Steuerung
Water OUT
Water IN Exhaust
Intake
Purge gas
Grounding
M6
Mains & control
see Fig. 3.5