LEYBOLD 312 31T User manual

TRIVAC® T
D4/8/16/30T
Two-Stage Rotary Vane Pump
▪ with mineral oil
Original Operating Instructions 300507907_002_C2
Part No:
312 31T
312 36T
312 41T
312 46T
312 51V
312 56T
312 61V
312 66T
and other variants

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Page
0Important Safety Information 4
0.1 Mechanical hazards 4
0.2 Electrical hazards 4
0.3 Thermal hazards 5
0.4 Hazards caused by materials and substances 5
0.5 Danger of ignition 5
0.6 Hazard caused by noise 5
0.7 Risk of damaging the pump 6
1Description 7
1.1 Function 7
1.2 Lubricants 9
1.3 Supplied Equipment 9
1.4 Accessories 10
1.5 Technical Data 11
2Transport and Storing 14
3Installation 15
3.1 Placement 15
3.2 Conforming Utilization 16
3.2.1 Non-conforming Utilization 16
3.3 Connection to the System 17
3.4 Electrical Connections 18
4Operation 20
4.1 Media Compatibility 20
4.2 Start-up 20
4.2.1 Start noise 20
4.3 Operation 21
4.3.1 Pumping of Non-Condensable Gases and Vapours 21
4.3.2 Pumping of Condensable Gases and Vapours 21
4.3.3 Operating Temperature 22
4.4 Shutdown 22
4.4.1 Controller/Mains Power Failure 22
5Maintenance 23
5.1 Maintenance Plan 24
5.2 Leybold Service 25
5.3 Monitoring the Oil Level 26
5.3.1 Checking the Condition of LVO 108 26
5.4 Oil Change 27
5.5 Cleaning the Inlet Screen 28
5.6 Disassembly and Reassembly of the Electric Motor 29
5.6.1 Checking the Coupling 29
5.7 Maintaining the Gas Ballast Valve 30
6Troubleshooting 32
7Wearing Parts and Original Spare Parts 34
8Waste Disposal 35
Contents

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Obligation to Provide Information
Before installing and commissioning the TRIVAC® T, carefully read these
Operating Instructions and follow the information so as to ensure optimum
and safe working right from the start.
The Leybold TRIVAC® T has been designed for safe and efficient operation
when used properly and in accordance with these Operating Instructions. It is
the responsibility of the user to carefully read and strictly observe all safety
precautions described in this section and throughout the Operating Instruc-
tions. The pump must only be operated in the proper condition and under
the conditions described in the Operating Instructions. It must be operat-
ed and maintained by trained personnel only. Consult local, state, and national
agencies regarding specific requirements and regulations. Address any further
safety, operation and/or maintenance questions to our nearest office.
DANGER indicates an imminently hazardous situation which, if not avoid-
ed, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoid-
ed, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoid-
ed, could result in minor or moderate injury.
NOTICE is used to notify users of installation, operation, programming or
maintenance information that is important, but not hazard related.
TRIVAC® T pumps are not designed:
■for pumping of dusty, aggressive, corrosive, flammable or explosive gases
or gases mixtures;
■for pumping of oxygen or other highly reactive gases with a greater concen-
tration than atmospheric concentration (>21%) ;
■for working in flammable, explosive or dusty environment.
For all these cases, special materials must be used. In case of doubt, please
contact Leybold.
Figures
The references to figures, e.g. (4/2) consist of the consecutive Fig. No. and
the Item No. in that order.
We reserve the right to alter the design or any data given in these Operating
Instructions. The illustrations are not binding.
Retain the Operating Instructions for further use.
NOTICE
DANGER
WARNING
CAUTION
NOTICE
WARNING
Notes

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0Important Safety Information
0.1 Mechanical hazards
1Avoid exposing any part of the human body to the vacuum.
2Never operate the pump without a connected intake line or without fitting
a blank flange on intake port.
3Do not operate the pump with any of the covers removed. Serious injury
may result.
4The location at which the TRIVAC® T (including its accessories) is being
operated should be such that angles over 10° from the vertical are avoid-
ed. Select the operating place so that all controls are easily accessible.
5The pump when filled with oil must only be moved in its vertical position.
Spilled oil involves the risk of falling.
6Make sure that the gas flow from the exhaust port is not blocked or re-
stricted in any way.
7If exhaust gases must be collected or contained, do not allow the exhaust
line to become pressurised. The pressure in the oil box must not exceed
1.5 bar (absolute). An exhaust line which is too small in diameter or which
is blocked can result in the formation of overpressures within the pump.
Possible consequences can be damage or even burst open the pump.
Thus the exhaust line must be checked from time to time to ensure that
there are no obstructions.
8When moving the TRIVAC® T always use the lifting means provided.
0.2 Electrical hazards
1The electrical connections must only be provided by a trained electrician
as specified, for example, by the regulations EN 50110-1. Observe local
regulations.
2Lethal voltages are present at the mains connections. Before starting with
any maintenance and service work, de-energise (lockout/tagout) the prod-
uct first.
3Lay connecting lines so that they cannot be damaged. Protect the lines
against humidity and contact with water. Avoid any heat stress on the line
due to unfavourable laying conditions.
4Suitably support the connecting lines so that the pumps are not exposed
to any major mechanical stress.
5After a mains power failure the pump will run up automatically again. This
also applies in the case of an emergency shutdown. In order to prevent
the pump from running up automatically again, the pump must be inte-
grated within a control arrangement such that it can only be switched on
manually again after the mains power has returned.
6Provide an adequate wall ground connection for the pump so as to avoid
any electrostatic charging.
7Before starting up for the first time, the motor circuit must be equipped
with a suitable protective motor switch. Please take note of the infor-
mation in these Operating Instructions and on the electric motor (wiring
diagram).
WARNING
WARNING
Safety information

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Safety information
0.3 Thermal hazards
1Under certain ambient conditions the TRIVAC® T may attain a tempera-
ture of over 70 °C (158 °F). There then exists the danger of receiving
burns.
Note the symbols on the pump pointing to the hazards, and in the case of
a hot pump wear the required protective clothing. All work on the “pump
still warm from operation” should only be done using protection gloves.
2Before servicing and maintenance work always leave the pump to cool
down.
3Consider always the warning information on the housing surfaces. If
these warning information have been removed, covered or obstructed, it’s
to secure that corresponding warning information will be attached again.
0.4 Hazards caused by materials and substances
1The pump is not suited for oxygen operation (>21% oxygen).
2Before commissioning the TRIVAC® T, make sure that the media which
are to be pumped are compatible with each other so as to avoid hazard-
ous situations. All relevant safety standards and regulations must be ob-
served.
3TRIVAC® T pumps cannot be used with toxic, chemical, radioactive and
corrosive gases as well as pyrophorous substances.
4If the pump has previously handled hazardous gases, implement the
proper precautionary measures before opening the intake or exhaust con-
nection.
Before opening the pump, purge it for a longer period of time with an inert
gas.
If necessary, use gloves, a respirator and/or protective clothing and work
under an exhaust hood. Firmly seal off the pump.
When shipping the contaminated pump for servicing, please also state
the type of hazard. For this you must use a form which we have pre-
pared for you.
5When cleaning a system in which a TRIVAC® T pump has been integrat-
ed, all parts in contact with the medium need to be compatible with the
cleaning agent so as to prevent a chemical reaction. Residues of the
cleaning agent within the pump must be avoided.
6Contaminated parts can be detrimental to health and environment. Before
beginning with any work, first find out whether any parts are contaminat-
ed. Adhere to the relevant regulations and take the necessary precau-
tions when handling contaminated parts.
0.5 Danger of ignition
1The standard version of the TRIVAC® T is not suited for operation in ex-
plosion hazard areas.
2The TRIVAC® T pumps including the accessories are fundamentally not
suited for pumping of combustible and explosive gases or vapours.
0.6 Hazard caused by noise
1The noise level produced by the pump is less than 60 dB(A).
CAUTION
DANGER
CAUTION
CAUTION

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0.7 Risk of damaging the pump
1Do not allow the ingestion of small objects (screws, nuts, washers, pieces
of wire, etc.) through the inlet port. For this reason always use the inlet
screen which is supplied as standard.
2Do not use the pump for applications that produce abrasive or adhesive
powders or condensable vapours that can leave adhesive or high viscosi-
ty deposits. When planning to pump vapours other than water vapour
please contact our sales or service department for advice.
3This pump is suited for pumping water vapour within the specified water
vapour tolerance limits.
4Avoid vapours that can condense into liquids when being compressed
inside the pump, if these substances exceed the vapour tolerance of the
pump.
5Before pumping vapours the TRIVAC® T should have attained its operat-
ing temperature. This will be the case approximately 30 minutes after
having started the pump. During this warming up phase, the pump should
be separated from the process, by a blocking valve in the intake line, for
example.
6In the case of wet processes we recommend the installation of liquid sep-
arators upstream and downstream of the pump as well as the use of the
gas ballast.
7The exhaust line should be laid so that it slopes down and away from the
pump so as to prevent condensate from backstreaming into the pump.
8The entry of particles and fluids must be avoided under all circumstances.
9Reactive or aggressive substances in the pump chamber may impair the
operating oil or modify it. In addition, such substances may be incompati-
ble with the materials of the pump (Viton, grey cast iron, aluminium, steel,
resins, glass etc.).
10. Corrosion, deposits and cracking of oil within the pump should be avoid.
11 Normal amounts of humidity within the range of the pump’s water vapour
tolerance will not significantly affect pump performance when the gas bal-
last is active.
12 When operating the pumps at gas throughput, it is urgently recommended
to connect an exhaust filter or use a suitable exhaust line. Here, the ex-
haust line must slope down and away from the pump.
13 In the case of custom pumps please note the information provided in the
supplementary sheets.
Safety information
NOTICE

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Areas of application
1Description
TRIVAC® T pumps are oil-sealed dual-stage rotary vane pumps. The number
in the type designation (4, 8, 16 or 30) indicates the pumping speed in m3·h-1.
TRIVAC® T pumps are capable of pumping gases and vapours and evacuat-
ing vessels or vacuum systems down into with the medium vacuum range.
The standard versions of the pump are not suited for pumping of oxygen ex-
ceeding the concentration as found in the atmosphere, and are also not suited
for pumping of hazardous gases or extremely aggressive or corrosive media.
1.1 Function
The rotor (1/7), mounted eccentrically in the pump housing (1/6), has two radi-
ally sliding vanes (1/5) which divide the pump chamber into several compart-
ments. The volume of each compartment changes periodically with the rotation
of the rotor.
As a result, gas is sucked in at the intake port (1/1). The gas passes through
the dirt trap sieve (1/2), flows past the open anti-suckback valve (1/3) and then
enters the pump chamber. In the pump chamber, the gas is passed on and
compressed, after the inlet aperture is closed by the vane.
The oil injected into the pump chamber is used for sealing and lubricating. The
slap noise of the oil in the pump which usually occurs when attaining the ulti-
mate pressure is prevented by admitting a very small amount of air into the
pump chamber. Pump is already with silencing device.
The compressed gas in the pump chamber is ejected through the exhaust
valve (1/9). The oil entrained in the gas is coarsely trapped in the internal
splashguard(1/10); there the oil is also freed of mechanical impurities. The gas
leaves the TRIVAC® T through the exhaust port.
During compression, a controlled amount of air -the so-called gas ballast - can
be allowed to enter the pump chamber by opening the gas ballast valve. The
gas ballast stops condensation of vapours in the pump chamber up to the limit
of the water vapour tolerance as specified in the technical data for the pump.
Description
1Intake port
2Dirt trap
3Anti-suckback valve
4Intake channel
5Vanes
6Pump chamber
7Rotor
8Exhaust channel
9Exhaust valve
10 Splashguard
11 Gas ballast
12 Exhaust port
Fig. 1 Sectional drawing of the TRIVAC® T
7
6
5
1
2
3
4
8
10
12
11
9

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Description
The gas ballast mechanism can be opened and closed by a knob on top of the
oil case. Two different positions (small or big amounts of gas ballast air) are
possible depending from the accruing amount of water vapour.
An oil pump (2/5) fitted inside of the inner pump body pumps oil from the oil
reservoir (the oil case) to lubricate all bearing points (2/1). And from there the
oil enters the pump chamber area (2/3) of the vacuum pump. The oil suction
line of the oil pump is placed low, resulting in a large usable oil reservoir.
The oil is separated from the gas in the TRIVAC T in two steps. First, small
droplets are coalesced into large drops in the internal protective cover (1/10)
fitted above the exhaust valves (1/9). From there the oil drops goes into the oil
case and from the walls back into the oil reservoir.
The vacuum is maintained by the TRIVAC T through an integrated anti-
suckback valve (1/3) which is controlled via oil pressure. During operation of
the TRIVAC T a control piston (3/2) remains sealed against a spring (3/1) by
the oil pressure. The valve disk (3/5) of the anti-suckback valve is held at the
lower position by its own weight (valve open).
When the pump stops (because of a failure or it has been switched off), the oil
pressure drops rapidly and the spring moves the control piston in the other
directions and opens a connection between the oil case and the anti-suckback
valve. The anti-suckback valve will be closed by the higher pressure from the
oil case and pressed against the sealing surface of the inlet port. The pressure
difference between the inlet port and the oil case holds the valve in position
and protects the recipient against venting. This effectively prevents the back
streaming of the oil or oil vapours. The anti-suckback valve (1/3) operates in-
dependently of the operation of the pump, i.e. also with gas ballast.
For a proper function of the anti-suckback valve the pressure in the inlet port
should be lower than 800 mbar.
Fig. 2 Schematic of the lubricating system
1Bearings
2Non-return valve
3Pump chamber of TRIVAC
4Oil reservoir
5Oil pump

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1.2 Lubricants
The standard TRIVAC® T pumps are ready for operation with mineral oil.
In case of operation of a TRIVAC® T we instruct our vacuum pump oil LVO100
or LVO 108.
LVO 108 can be used only in China mainland.
Use only the kind of oil specified by Leybold.
1.3 Supplied Equipment
All the pumps are equipped with motors.
For pumps with single-phase AC motor are supplied ready to operate with
switch, built-in thermal motor protection switch, mains cable (approx. 1.5 m)
and mains plug.
For pumps with three-phase AC motor, the switch, motor protection switch,
mains cable etc. are not included.
The equipment supplied with the TRIVAC® D4/8T pump includes:
Pump with motor,
1 centering ring,
1 centering ring with dirt trap,
2 clamping rings DN 16 KF,
1 bottle of 1L oil,
Operating Instructions
Spare Parts List
Description
NOTICE
1Spring
2Control piston
3Anti-suckback piston
4Valve seat
5Valve disc
6Inlet port
Fig. 3 Part section of anti-suckback valve
2
1
5
3
4
6
Pump stop Pump running
LVO100 oil Parts No.
1L L100 01
5L L100 05
20L L100 20
208L L100 99
LVO108 Oil Parts No.
1L L108 01
5L L108 05
20L L108 20
208L L108 99

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The equipment supplied with the TRIVAC® D16/30T pump includes:
Pump with motor,
1 centering ring,
1 centering ring with dirt trap,
2 clamping rings DN 25 KF,
2 bottle of 1L oil,
Operating Instructions
Spare Parts List
For protection during shipment, the connection ports are each blanked off by
rubber diaphragms and supporting rings.
1.4 Accessories
Part No.
Oil drain tap 190 90
For D4/8T
Exhaust filter AF8 DN16KF 190 50
Replacement filter element FE8 for AF8 (pack of 5) ES190 80
Condensate trap AK8 DN16KF 190 60
Exhaust filter AF4-8 DN16KF 189 06
Replacement filter element FE4-8 for AF4-8189 71
Condensate separator AK4-8 DN16KF 188 06
For D16/30T
Exhaust filter AF25 DN25KF 190 53
Replacement filter element FE25 for AF25 (pack of 5) ES190 83
Condensate trap AK25 DN25KF 190 63
Exhaust filter AF16-25 DN25KF 189 11
Replacement filter element FE16-25 for AF16-25 189 72
Condensate separator AK16-25 DN25KF 188 11
Connection components required to connect the exhaust filter and the
condensate separators in each case:
For D4/8T
1 Pipe bend, DN16KF 184 36
1 Centering ring with O-Ring, DN16KF 182 06
1 Clamping ring, DN16KF 183 41
For D16/30T
1 Pipe bend, DN25KF 184 37
1 Centering ring with O-Ring, DN25KF 182 07
1 Clamping ring, DN25KF 183 42
Remarks: Any other request about accessories, please contact us.
Description

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1.5 Technical Data
1) To DIN 28 400 and subsequent numbers; The values are measured by Capacitance Diaphragm Gauge. If using Pirani Gauge, the val-
ues will be half or a decade higher. The values are defined by pumps with LVO 100 oil.
2) The motor may accelerate with a delay when simultaneously an undervoltage is present at the motor and the pump is at the minimum
permissible and ambient temperature. Under such operating conditions the motor protection switch may respond.
3) The value is measured with 3 phase motor under 50Hz.
Description
TRIVAC® Unit D4T D8T D16T D30T
Nominal pumping speed (50Hz)1) m3∙h-15.3 9.2 17.0 31.4
Nominal pumping speed (60Hz)1) m3∙h-16.4 11.0 20.4 37.7
Pumping speed (50Hz)1) m3∙h-15.0 9.0 16.2 28.2
Pumping speed (60Hz)1) m3∙h-15.9 10.0 19.0 33.8
Ultimate total pressure without gas ballast1) mbar 5∙10-35∙10-35∙10-35∙10-3
Ultimate total pressure with gas ballast (pos. 1)1) mbar 8∙10-38∙10-38∙10-38∙10-3
Ultimate total pressure with gas ballast (pos. 2)1) mbar 2∙10-22∙10-22∙10-22∙10-2
Water vapour tolerance (pos. 2)1) mbar 15 15 20 20
Water vapour capacity (pos. 2)1) g/h 55 95 230 400
Oil filling, min./max. l0.6/0.9 0.7/1 1.0/1.6 1.1/ 1.8
Noise level to DIN 45 635 without/with gas ballast3) dB(A) 56/58 56/58 58/60 58/60
Ambient temperature 2) °C 12 - 45 12 - 45 12 - 45 12 - 45
Weight without oil kg 25.2 26.2 37 40
Connections, intake and exhaust side DN(mm) 16KF 16KF 25KF 25KF
Single phase AC motor power, 220V 50Hz
Cat.No. of the pumps deliver with oil LVO100
W
370
312 36T
370
312 46T
Single phase AC motor power, 220/230V 50/60Hz
Cat.No. of the pumps deliver with oil LVO100
W
550
312 56T
750
312 66T
3 phase AC motor power,
Δ200-240V/Y380-440V 50Hz &
Δ220-260V/Y380-480V 60Hz
Cat.No. of the pumps deliver with oil LVO100
W
250
312 31T
370
312 41T
3 phase AC motor power,
Δ200-240V/Y380-440V 50Hz &
Δ220-260V/Y380-480V 60Hz
Cat.No. of the pumps deliver with oil LVO108
W
550
312 51V
750
312 61V

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Description
Fig. 4 Pumping speed characteristics for the TRIVAC® T pumps (50 Hz operation, SI units)
———— Ultimate total pressure without gas ballast
- - - - - - - Ultimate total pressure with gas ballast (pos.1)
Pumping speed (m3/h)
Pressure (mbar)
D8T
D4T
D30T
D16T
Pumping speed (m3/h)
Pressure (mbar)

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Description
Fig. 5 Dimensional drawing for TRIVAC® T pumps
(dimensions a, b, c1, d, h and h1 are approximate)
(dimensions in mm 1inch = 25.4 mm)
abcc1 c2 dd1 d2 h
Pump h1
D4T 1ph 510 190 280 140.5 114 145 41 50 230 240
3ph 460
D8T 1ph 530 210 280 140.5 114 145 41 50 230 240
3ph 480
D16T 1ph 565 245 330 160 142 185 55 63 265 265
3ph 540
D30T 1ph 610 290 330 160 142 185 55 63 265 265
3ph 600

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2Transport and Storing
To lift the pumps only use the crane eyes provided for this purpose, re-
spectively use corresponding lifting facilities. When connecting or remov-
ing the pump, do not move under hoisted loads.
If possible transport the pump in its original packaging, if not available
exercise due care.
Pumps which are filled with oil must only be moved while standing upright,
otherwise oil may escape. Avoid any other orientations during transport. Check
the pump for the presence of any oil leaks, since there exists the danger that
someone may slip on spilt oil.
Before putting a pump into operation once more it should be stored in a dry
place preferably at room temperature (20 °C). Before the pump is stored it
must be properly disconnected from the vacuum system, purged with dry nitro-
gen and the oil should be changed too.
The inlets and outlets of the pump must be sealed with the shipping seals
which are provided upon delivery.
The gas ballast switch must be set to the close position and if the pump is to
be stored for a longer period of time it should be sealed in a PE bag containing
some desiccant (silica gel).
When a pump is put into operation after it has been stored for over one year,
standard maintenance should be run on the pump and the oil should also be
exchanged (see Section 5.4). We recommend that you contact the Leybold
Service.
CAUTION
Transport and Storing

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3Installation
Instructions for the operating personnel
Before any kind of assembly work the personnel must be informed about
potential hazards. Observe Safety Information 0.1 to 06.
3.1 Placement
The TRIVAC® T pump can be set up on a flat, horizontal surface. Rubber feet
under the coupling housing ensure that the pump cannot slip.
If you wish firmly install the pump in place, insert bolts through bore holes in
the rubber feet.
Risk of toppling
Max. tilt for the pump is 10° from the vertical.
If you wish firmly install the pump in place, insert bolts through bore holes
(Ø9mm) in the rubber feet.
The rubber feet act as vibration absorbers. They must therefore not be-
come pressed by screws.
The site chosen should allow adequate air circulation to cool the pump
(keep front and rear unobstructed). See Fig.5, Dimensional drawing for
TRIVAC® T
The oil-level glass must be visible.
Note the ambient conditions during operation
The ambient temperature should not exceed +45 °C (113 °F) and not
drop below +12 °C (55 °F) (see Section 4.3.3).
For installation sites over 1000 m above sea level and/or a relative atmos-
pheric humidity of over 90%, you must discuss this with Technical support
or Sales.
The max. amount of heat given off approximately corresponds to the rat-
ed motor power.
Install the pump such that only minimal quantities of dust can deposit
themselves on the surfaces. In those cases where dust deposits form,
measures need to be introduced which ensure that these are removed on
a regular basis.
The maximum gas inlet temperature must not exceed 60 °C.
The maximum pressure at the inlet must not exceed atmospheric pres-
sure (approximately 1013 mbar). Never apply overpressures to the
pump’s inlet.
The maximum exhaust pressure must not exceed 0.5 bar (overpressure).
Installation
NOTICE
CAUTION
NOTICE

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3.2 Conforming Utilization
TRIVAC® T pumps can pump gases and vapours, and evacuate vessels or
vacuum systems in the fine vacuum range.
The pumps are suited for pumping water vapour within the specified water va-
pour tolerance limits. Avoid vapours that can condense into liquids when being
compressed inside the pump, if these substances exceed the vapour tolerance
of the pump. When pumping water vapours ensure that the gas ballast valve
is open and that the pump has been warmed up for approximately 30 minutes
with the intake line closed.
Pumping of dust or much contaminated media
The pumps are not suited for pumping of liquids or media which carry
large quantities of dust. Corresponding protection devices need to be pro-
vided.
Our technical sales department is available for further advice in these matters.
3.2.1 Non-conforming Utilization
The TRIVAC® T is NOT suited for pumping of:
■radioactive and toxic substances
■pyrophorous substances
■corrosive gases
■oxygen (or other highly reactive gases) at concentrations exceeding
that of the atmosphere (> 21 % for oxygen).
The pumps are not suited for pumping of liquids or media which carry
large quantities of dust. Corresponding protection devices need to be pro-
vided.
The standard pump is not suited for pumping of hazardous gases or va-
pours.
When cleaning a system in which a TRIVAC® pump has been integrated,
all parts in contact with the medium need to be compatible with the clean-
ing agent so as to prevent a chemical reaction. Residues of the cleaning
agent within the pump must be avoided.
NOTICE
CAUTION
NOTICE
CAUTION
Installation
1
2
3
4
5
1Intake port
2Exhaust port
3Gas ballast (GB) knob
4Gas ballast (GB) label
(0 close GB / 1 open small GB /
2 open big GB)
5 Oil-level glass
Fig. 6 Connections and controls

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Installation
3.3 Connection to the System
Before connecting the TRIVAC® T, remove the shipping seals from the con-
nection flanges (6/1) and (6/2).
Retain the shipping seals in case you need to store the pump in the future.
The pump is shipped with intake and exhaust flanges mounted for vertical con-
nection of the connecting lines. Connect the intake and exhaust lines with a
centering ring and a clamping ring each. Use the centering ring with dirt trap
for the intake port.
Connect the intake and exhaust line using anti-vibration bellows, without plac-
ing any strain on the pump.
The intake line must be clean. Deposits in the intake line may outgas and ad-
versely affect the vacuum. The connecting flanges must be clean and undam-
aged.
The maximum throughput of the pump is equivalent to the pumping speed of
the pump.
Note the specified cross sections for the connection lines
If exhaust gases must be collected or contained, do not allow the exhaust
line to become pressurized. The pressure in the oil box must not exceed
1.5 bar (absolute). An exhaust line which is too small in diameter or which
is blocked can result in the formation of overpressures within the pump.
Possible consequences can damage or even burst open pump. Thus the
exhaust line must be checked from time to time to ensure that there are
no obstructions. For avoiding of overpressure, you can install the exhaust
fan at the end of exhaust pipe or use the short wide exhaust pipe.
If no exhaust line is connected, it is advisable to fit an exhaust filter.
If several pumps are connected to one exhaust line, ensure an adequate
cross-section and a non-return valve at the exhaust of each pump.
Never operate the pump with a sealed exhaust line. There is the danger
of injury.
Avoid back flowing condensate
Install the exhaust line with a downward slope (lower than the pump) so
as to prevent condensate from flowing back into the pump. If this is not
possible, insert a condensate trap.
CAUTION
NOTICE

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Installation
Safely lead the exhaust gases away
Exhaust gases may, depending on the type of application, present a
health hazard and/or may be detrimental to the environment.
The exhaust gases from the vacuum pump must be safely led away and
subjected to post-treatment as required. In order to reduce the emission
of oil vapours we recommend the installation of an additional exhaust filter
(Leybold accessory, see Section 1.5). Depending on the type of applica-
tion or the kind of pumped media, the corresponding regulations and infor-
mation sheets must be observed.
When oil mist is to be removed from the exhaust flow we recommend the
use of the exhaust filter.
The maximum intake pressure must not exceed atmospheric pressure (1013
mbar).
Intake pressure for the gas ballast should be about 1013 mbar (absolute) and
sufficient quantities of gas must be available (about 1/10 of the pumping
speed).
3.4 Electrical Connections
Risk due to high voltages
Death or severe injury caused by an electric shock!
The electrical connections must only be made by a trained electrician as
specified, for example, by the regulations EN60204-1. Note the national
regulations of the country in which the equipment is being operated.
During all connection work, the mains power supply lines must be deener-
gised (lockout/tag out). In order to prevent the pump from running up un-
expectedly after a mains power failure, the pump must be integrated in
the control system in such a way that the pump can only be switched on
again manually. This applies equally to emergency cut-out arrangements.
Observe Safety Information 0.2.
3.4.1 Pump with Single-Phase AC Motor
With this design, the pump can be directly connected by means of the connect-
ing cable and plug to the corresponding AC mains, using a suitable fuse; refer
to the current value stated on the name plate of the motor.
The direction of rotation need not be checked as it is fixed. The motor is pro-
tected against overloading by a thermal overload switch. After this switch has
cut out the motor, the motor is automatically switched back on once it has
cooled down. That’s why the mains plug must be disconnected from the mains
before staring with any work on the pump.
CAUTION
NOTICE
DANGER
WARNING

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Installation
3.4.2 Pump with Three-Phase AC Motor
TRIVAC® T pumps with three-phase motor are supplied without accessories
for electrical connection. They must be connected via the appropriate cable,
and a suitable motor protection switch. If motor protection switch OFF, the mo-
tor shut down at once and don’t restart automatically. After the motor protec-
tion is switched ON manually, the motor can restart automatically on its own.
In any case of maintenance either the mains plug has to be disconnected or
the motor protection has to be switched OFF before starting with any work on
the pump. After the necessary work, the power supply can be rebuilt again.
When operating the unit at its operational limits (at an ambient temperature of
12 °C and at undervoltage, for example) it may be necessary to protect the
electric motor against high start-up currents by installing an overload protector
(Class 20 in accordance with IEC 60947, for example). Set up according to the
information provided on the motor nameplate to meet local requirements for
the motor protection switch. The local requirements may specify measures for
reducing the start-up current (soft start, frequency controlled start-up, for ex-
ample).
Set the switch in accordance with the rating on the motor nameplate.
Please observe the diagram at the motor.
After connecting the motor and after every time you alter the wiring, check the
direction of rotation. To do so, briefly switch on the motor and check whether a
suitable cover (e. g. a blank flange) is sucked on at the intake port.
If not, interchange two phases of the connection.
Observe the direction arrow on the motor fan cover.
In the case of custom pumps please note the information provided on a sepa-
rate sheet.
The pump must be sufficiently grounded. Always connect the protective
ground conductor in a professional manner and using a single piece of
wire.
NOTICE
To reverse running invert L1 and L2.
200 V 50/60 Hz 220-230 V 50/60 Hz 380-415 V 50 Hz
380-460 V 60 Hz
D30T
D16T
380-415 V 50 Hz
200-230 V 50/60 Hz
380-460 V 60 Hz
D8T
Fig. 7 Motor connection diagram
220V 50Hz 380V 50Hz

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Operation
NOTICE
NOTICE
WARNING
WARNING
4Operation
4.1 Media Compatibility
TRIVAC® T pumps can pump condensable gases and vapours, provided that
the gas ballast valve is open and the pump has attained its operating tempera-
ture.
4.2 Start-up
Each time before starting up check the oil level. The pump must never be
operated with an oil level below the minimum.
Open all valves blocking the exhaust lines. The pump must never be op-
erated with a blocked or constricted exhaust line.
Check the direction of rotation before starting the pump for the first time and
after each change in the electrical connection (see Chapter 3.4).
On initial start-up, after prolonged idle periods or after an oil change, the speci-
fied ultimate pressure cannot be attained until the oil is degassed.
This can be done by running the pump for approx. 30 min. with the intake line
closed and the gas ballast valve (6/4) open.
The TRIVAC® T pump cannot continuously run at operating pressures
over than 100 mbar (absolute). It should reach to pressure lower than
100 mbar (absolute) within 20mins.
Use matching accessories only
Before starting the pump ensure that the pump and the fitted accessories
meet the requirements of your application and that safe operation can be
guaranteed.
Start up the pump only after it has been fully installed
Never operate the pump with an open intake port. Vacuum connections
as well as oil feed and discharge openings must not be opened while the
pump is operating. Avoid exposing any part of the human body to the vac-
uum. There is the risk of suffering injury.
Observe Safety Information 0.1.
4.2.1 Start noise
There is start noise which is a little bit bigger than pump running normal-
ly when the pump starts in the initial time after stop for a while, especially
in the condition of lower ambient temperature. The reason is when the
temperature of pump is lower, the viscosity of pump oil is higher so that
the vanes can not get out of vane slot of rotor smoothly, which causes
start noise. The noise will reduce to normal level after the pump runs nor-
mally.