LEYBOLD TRIVAC D 16 B-DOT User manual

TRIVAC B-DOT
D 16 B-DOT
D 25 B-DOT
D 40 B-DOT
®
Part Nos.
11406
11410
1127618
1128612
91463-1
Operating Instructions GA01208_002_C0

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0 Important Safety Information 5
0.1 Mechanical hazards 5
0.2 Electrical hazards 5
0.3 Thermal hazards 6
0.4 Hazards caused by materials and substances 6
0.5 Danger of ignition 7
0.6 Hazard caused by noise 7
0.7 Risk of damaging the pump 8
1 Description 9
1.1 Function 10
1.2 Lubricants / Gaskets 12
1.3 Supplied Equipment 13
1.4 Technical Data 13
1.5 Accessories 16
2 Transport and Storing 17
3 Installation 18
3.1 Placement 18
3.2 Conforming Utilization 19
3.3 Connection to the System 21
3.4 Electrical Connections 22
4 Operation 24
4.1 Media Compatibility 24
4.2 Start-up 24
4.3 Operation 25
4.3.1 Pumping of Non-Condensable Gases and Vapours 25
4.3.2 Pumping of Condensable Gases and Vapours 25
4.3.3 Operating Temperature 26
4.4 Shutdown 26
4.4.1 Shutdown through Monitoring Components 27
4.4.2 Controller/Mains Power Failure 27
Contents
Page

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5 Maintenance 28
5.1 Maintenance Plan 29
5.2 Leybold Service 30
5.3 Monitoring the Oil Level 31
5.3.1 Checking the Condition of DOT-4 31
5.4 Oil Change 32
5.5 Cleaning the Inlet Screen 34
5.6 Removing and Fitting the Internal Demister 34
5.7 Disassembly and Reassembly of the Electric Motor 36
5.8 Replacing the Shaft Seal 37
5.9 Removing and Remounting the Pump Module 40
5.9.1 Removing the Pump Module 40
5.9.2 Remounting the Pump Module 41
6 Troubleshooting 42
7 Waste Disposal 44
EC Declaration of Conformity 45
Contents
Page
Original installation and operating instructions.

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Obligation to Provide Information
Before installing and commissioning the TRIVAC-B-DOT, carefully read
these Operating Instructions and follow the information so as to ensure
optimum and safe working right from the start.
The Leybold TRIVAC-B-DOT 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 Instructions. The pump must only be operated in the proper
condition and under the conditions described in the Operating Instruc-
tions. It must be operated and maintained by trained personnel only. Consult
local, state, and national agencies regarding specific requirements and regu-
lations. Address any further safety, operation and/or maintenance questions
to our nearest office.
DANGER indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided,
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.
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.
Notes
DANGER
WARNING
CAUTION
NOTICE
NOTICE

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0 Important Safety Information
0.1 Mechanical hazards
1 Avoid exposing any part of the human body to the vacuum.
2 Never operate the pump without a connected intake line or without
fitting a blank flange.
3 Do not operate the pump with any of the covers removed.
Serious injury may result.
4 The location at which the TRIVAC-B-DOT (including its accessories) is
being operated should be such that angles over 10° from the vertical
are avoided.
5 The pump when filled with oil must only be moved in its vertical
position. Spilled oil involves the risk of falling.
6 Make sure that the gas flow from the exhaust port is not blocked or
restricted in any way.
7 If 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 0.5 bar (g). 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 a damaged or even burst
open pump. Thus the exhaust line must be checked from time to time
to ensure that there are no obstructions.
8 When moving the TRIVAC-B-DOT always use the allowed means.
0.2 Electrical hazards
1 The electrical connections must only be provided by a trained
electrician as specified, for example, by the regulations EN 50110-1.
Observe local regulations.
2 Lethal voltages are present at the mains connections. Before starting
with any maintenance and service work, de-energise (lockout/tagout)
the product first.
3 Lay 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.
4 Suitably support the connecting lines so that the pumps are not
exposed to any major mechanical stress.
5 After 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 integrated within a control arrangement such that it can only be
switched on manually again after the mains power has returned.
6 Provide an adequate ground connection for the pump so as to avoid
any electrostatic charging.
Safety information
WARNING
WARNING

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0.3 Thermal hazards
1 Under certain ambient conditions the TRIVAC-B-DOT may attain a
temperature 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.
2 Before servicing and maintenance work always leave the pump to cool
down.
3 Note the warning information on the housing surface. If these warning
notices have been removed, covered or obstructed, include corre-
sponding additional warning notices.
0.4 Hazards caused by materials and substances
1 Before pumping oxygen (or other highly reactive gases) at
concentrations exceeding the concentration in the atmosphere
(> 21 % for oxygen) it will be necessary to use a special pump. Such
a pump will have to be modified and degreased, and an inert special
lubricant (like PFPE) must be used.
2 Before commissioning the TRIVAC-B-DOT, make sure that the
media which are to be pumped are compatible with each other so
as to avoid hazardous situations. All relevant safety standards and
regulations must be observed.
3 When pumping toxic, chemical, radioactive and corrosive gases
as well as pyrophorous substances, the operating company is
under the obligation to comply with the national and international
safety regulations and guidelines. Regarding the suitability of the
TRIVAC pumps for special applications in which such gases, respec-
tively substances shall be pumped, Leybold should be consulted first.
4 If the pump has previously handled hazardous gases, implement the
proper precautionary measures before opening the intake or exhaust
connection.
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.
5 Contaminated parts can be detrimental to health and environment.
Before beginning with any work, first find out whether any parts
are contaminated. Adhere to the relevant regulations and take the
necessary precautions when handling contaminated parts.
Safety information
CAUTION
DANGER

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0.5 Danger of ignition
1 The standard version of the TRIVAC-B-DOT is not suited for operation
in explosion hazard areas.
2 The TRIVAC pumps including the accessories are fundamentally not
suited for pumping of combustible and explosive gases or vapours.
Mixtures of substances may, regarding the fire and explosion risk be
critical or uncritical. The operating company is under the commitment
to analyse this and rate the hazard potential accordingly so as to
therefrom derive the necessary safety measures which must be intro-
duced.
3 Provided ignitable or pyrophorous substances are present in the
equipment you must:
nensure that no air can enter into the equipment,
nensure that the system is leak-tight,
nwith an inert gas purge (with nitrogen, for example) dilute all igni-
table gases or vapours which may enter into the pump through the
pump’s inlet and/or with an inert gas purge reduce the concentration
of ignitable gases or vapours in the pump and in the exhaust line to
less than a quarter of the lower explosion limit (LEL) published for the
respective gases.
0.6 Hazard caused by noise
1 The noise level produced by the pump less than 60 dB(A). Suitable
hearing protection measures must be introduced.
CAUTION
CAUTION
Safety information

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0.7 Risk of damaging the pump
1 Before starting up for the first time, the motor circuit must be equip-
ped with a suitable protective motor switch. Please take note of the
information in these Operating Instructions and on the electric motor
(wiring diagram).
2 Do 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.
3 Do not use the pump for applications that produce abrasive or
adhesive powders or condensable vapours that can leave adhesive or
high viscosity deposits. When planning to pump vapours other than
water vapour please contact our sales or service department for
advice.
4 This pump is suited for pumping water vapour within the specified
water vapour tolerance limits.
5 Avoid vapours that can condense into liquids when being compressed
inside the pump, if these substances exceed the vapour tolerance of
the pump.
6 Before pumping vapours the TRIVAC-B-DOT should have attained its
operating 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.
7 In the case of wet processes we recommend the installation of liquid
separators upstream and downstream of the pump as well as the use
of the gas ballast.
8 The 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.
9 The entry of particles and fluids must be avoided under all
circumstances.
10 Reactive or aggressive substances in the pump chamber may impair
the operating oil or modify it. In addition, such substances may be
incompatible with the materials of the pump (Viton, grey cast iron, alu-
minium, steel, resins, glass etc.).
11 Corrosion, deposits and cracking of oil within the pump are not
allowed.
12 Normal amounts of humidity within the range of the pump’s water
vapour tolerance will not significantly affect pump performance when
the gas ballast is active.
13 When operating the pumps at gas throughput, it is urgently
recommended to connect an exhaust filter or use a suitable exhaust
line. Here, the exhaust line must slope down and away from the pump.
14 In the case of custom pumps please note the information provided in
the supplementary sheets.
Safety information
NOTICE

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Description
1 Description
TRIVAC-B-DOT pumps are oil-sealed rotary vane pumps having either a
single stage or two stages.The number in the type designation indicates the
pumping speed in m3· h-1.
TRIVAC-B-DOT pumps can pump gases and vapours. They are used to
evacuate brake systems and to degas hydraulics liquids.
Via an intermediate flange the drive motor of the TRIVAC is mounted to the
coupling housing. The pump and motor shafts are directly connected by a
flexible coupling. The bearing points of the pump module are force lubricated
sliding bearings. All controls as well as the oillevel glass and the nameplate
are arranged on the front. All connections are to be found at the sides of the
pump. The oil-level glass is provided with prisms for better observation of the
oil level.
The pump module consists of assembly parts which are pin-fitted so as to
allow easy disassembly and reassembly. The pump module can be easily
removed without special tools.
TRIVAC-B-DOT pumps are equipped with special seals capable of
resisting brake fluids.
3
2
1
Fig. 1 TRIVAC-B-DOT with accessories and float switchr
NOTICE
1 Oil level glass with float switch (option)
2 Exhaust filter AF - DOT
3 Trap AK - DOT

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Description
1.1 Function
The rotor (2/7), mounted eccentrically in the pump housing (2/6), has two
radially sliding vanes (2/5) which divide the pump chamber into several
compartments. The volume of each compartment changes periodically with
the rotation of the rotor.
As a result, gas is sucked in at the intake port (2/1). The gas passes through
the dirt trap sieve (2/2), flows past the open anti-suckback valve (2/3) 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
ultimate pressure is prevented by admitting a very small amount of air into
the pump chamber.
The compressed gas in the pump chamber is ejected through the exhaust
valve (2/10). The oil entrained in the gas is coarsely trapped in the internal
demister (2/11); there the oil is also freed of mechanical impurities. The gas
leaves the TRIVAC-B-DOT 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.
Fig. 2 Schnitt durch eine TRIVAC-B-DOT
1 Intake port
2 Dirt trap
3 Anti-suckback valve
4 Intake channel
5 Vanes
6 Pump chamber
7 Rotor
8 Cover plate, connection for inert gas ballast
9 Exhaust channel
10 Exhaust valve
11 Internal demister
12 Spring buckles
13 Cover plate, connection for oil filter

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The gas ballast valve is opened (position I) and closed (position 0) by turning
the gas ballast knob (7/5) on the front.
To enable the TRIVAC-B-DOT to be used at intake pressures as high
as 1,000 mbar, a special lubricating system was developed featuring
force-lubrication of the sliding bearings.
An oil pump (3/6) pumps the oil from the oil reservoir (3/5) into a pressure-
lubrication system which supplies oil to all bearing points (3/2). From there
the oil enters the pump chamber area (3/4) of the vacuum pump.
The oil pump is fitted in the front end plate on the coupling side of the pump
module. The oil suction line is placed low, resulting in a large usable oil
reservoir.
The oil is separated from the gas in the TRIVAC-B-DOT in two steps as
described above. First, small droplets are coalesced into large drops in the
internal demister (2/11) fitted above the exhaust valve (2/10). Then, the large
drops fall into the oil reservoir as the exhaust gas is diverted by the inner
walls of the oil case. Thus a low loss of oil is obtained. This and the large
usable oil reservoir ensure long intervals between oil changes even at high
intake pressures.
The vacuum is maintained by the TRIVAC-B-DOT through an integrated
hydropneumatic anti-suckback valve (2/3) which is controlled via the oil
pressure.
During operation of the TRIVAC-B-DOT the control piston (4/3) remains
sealed against a spring (4/2) by the oil pressure. The valve disk (4/6) of the
anti-suckback valve is held at the lower position by its own weight (valve
open). When the pump stops (because it has been switched off or because
of a failure), the oil pressure drops and the spring (4/2) presses the control
piston (4/3) up. Thus a connection is provided between the oil case or the oil
reservoir (4/1) and the piston (4/4) of the anti-suckback valve.
Due to the pressure difference between the oil case and the intake port the
oil presses the piston (4/4) up and the valve plate (4/6) against the valve seat
(4/5). The quantity of oil in the oil reservoir (4/1) prevents the entry of air into
the intake port (2/1) at the beginning of this process.
After the oil has flowed out from the reservoir and when the valve plate rests
on the valve seat, air follows in, which vents the pump chamber and forces
the valve disc (4/6) against its seat.This effectively prevents backstreaming of
oil or oil vapours. The anti-suckback valve (2/3) operates independently of the
operating mode of the pump, i.e. also with gas ballast.
Description

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1.2 Lubricants / Gaskets
These pumps must only be operated with brake fluids in accordance with
DOT-3 and DOT-4 or alternative operating agents which have been approved
by Leybold.
TRIVAC-B-DOT pumps and accessories are equipped with special seals
which are capable of resisting exposure to brake fluids.
Fig. 3 Schematic of the lubricating system
Fig. 4 Hydropneumatic anti-suckback valve
Description
1 Accessories
2 Bearings
3 Non-return valve
4 Pump chamber of the TRIVAC
5 Oil reservoir
6 Oil pump
1 Oil reservoir 5 Valve seat
2 Spring 6 Valve disk
3 Control piston 7 Gas inlet
4 Anti-suckback piston

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1.4 Technical Data
TRIVAC-B-DOT D 16 B-DOT D 25 B-DOT D 40 B-DOT
Nominal pumping speed1) m3· h-1 18.9 29.5 46
Pumping speed1) m3· h-1 16.5 25.7 40
Ultimate partial pressure without gas ballast1) mbar 10-4 10-4 10-4
Ultimate total pressure without gas ballast1) mbar < 6 · 10-1 < 6 · 10-1 < 6 · 10-1
Ultimate total pressure with gas ballast1) mbar < 9 · 10-1 < 9 · 10-1 < 9 · 10-1
Water vapour tolerance1) mbar 25 25 40
Water vapour capacity g · h-1 305 476 1184
OIl filling, min./max. l 0.45 / 1.0 0.6 / 1.4 1.7 / 2.6
Noise level to DIN 45 635, dB (A) 54 / 56 54 / 56 57 / 59
(without/with gas ballast)
Admissible ambient temperatur °C +12 ... +40 +12 ... +40 +12 ... +40
Weight kg 26 32 68
Connections, intake and exhaust side DN 25 KF 25 KF 40 KF
1)To DIN 28 400 and subsequent numbers
1.3 Supplied Equipment
The equipment supplied with the TRIVAC pump includes:
Pump with a motor,
Pump filled with brake fluid according to DOT-4,
1 centering ring,
1 centering ring with dirt trap,
2 clamping rings,
Operating Instructions,
Spare Parts List.
For protection, the connection ports are each blanked off by rubber dia-
phragms and supporting rings.
The part number 914 63-1 is delivered with the oil Ucon LB300-XY26.
Description
In the case of custom pumps please note the information provided in the
supplementary sheets.
NOTICE

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Description
Fig. 6 Dimensional drawings for the TRIVAC-B-DOT
(Dimensions a, l, b to b2and h1are approximate, dimensions in mm)
nm
ca
l
h1
b1
o
h2
h
b2
b
3
h
l1
DN
nml
ca
h1
b1
o
h2
h
b2
b
Dimensional drawing for the TRIVAC
D 16 B - DOT, D 25 B - DOT
Dimensional drawing for the TRIVAC
D 40 B - DOT
ab b1b2chh1h2h3mn o
D 16 B 82 190175 150135 298250 226263 280140 132
D 25 B 143190 175150 135298 250226 263280 140132
DN abb1b2ch h1h2mno
D 40 B 40 KF 135 254234 206166 355336 308382 191190
25 KF
25 KF

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Description
Cat. No. of the pumps 1128612 1127618, 11406, 11410, 91463-1
Motor type AMH 100L AA4 AMH 80Z AA4
Motor L/N 6506961 6506939
Compliance Certification number CC046A CC046A
IP rating IP 55 IP 55
Operating mode IEC34 S1 S1
Isolation class F F
Phases 3~ 3~
Nom. efficiency (η) at nom. voltage:
50 Hz and 100 % of nom. load 85.9 % (at 400 V) 80.4 % (at 400 V)
50 Hz and 75 % of nom. load 85.9 % (at 400 V) 81.3 % (at 400 V)
50 Hz and 50 % of nom. load 83.9 % (at 400 V) 79.6 % (at 400 V)
60 Hz and 100 % of nom. load 87.9 % (at 460 V) 82.7 % (at 400 V)
60 Hz and 75 % of nom. load 87.1 % (at 460 V) 82.1 % (at 400 V)
60 Hz and 50 % of nom. load 84.5 % (at 460 V) 79.2 % (at 400 V)
Efficiency class IE2 IE2
EPAct EPAct
Manufacturer Lafert SpA Lafert SpA
San Donà di Piave San Donà di Piave
Italy Italy
Number of poles 4 4
Nom. output power at 50 Hz 2200 W 750 W
Nom. output power at 60 Hz 2200 W 750 W
Nom. in frequency 50 Hz 50 Hz
60 Hz 60 Hz
Nom. voltage range
and nom. current at 50 Hz 200-240 V / 15.0 A 200-240 V / 3.6 A
200 V / 10.4 A (IE2) 200 V / 3.6 A (IE2)
380-400 V / 5.2 A 380-400 V / 1.8 A
380-400 V / 5.2 A (IE2) 380-400 V / 1.8 A (IE2)
Nom. voltage range
and nom. current at 50 Hz 200-240 V / 12.0 A 200-240 V / 3.4 A
208-240 V / 9.2 A (EPAct) 208-240 V / 3.2 A (EPAct)
380-480 V / 5.2 A 380-480 V / 1.7 A
416-480 V / 4.6 A (EPAct) 416-480 V / 1.6 A (EPAct)
Tolerances of voltage range1) ±10 % ±10 %
Nom. speed at 50 Hz 1430 min-1 1430 min-1
Nom. speed at 60 Hz 1735 min-1 1740 min-1
Disposal local directives have to be considered local directives have to be considered
Max. altitude above sea level 1000 m above sea level 1000 m above sea level
Max. ambient temperature when operating1) 40 °C 40 °C
T-board / plug 9 pin 9 pin
Certificates2) of the motor
RoHS RoHS
length of the pump 720 mm (D 40 B) 508 mm (D 16 B)
570 mm (D 25 B)

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Description
NOTICE
1)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 con-
ditions the motor protection switch may respond. In this case the motor may be started again. In the
case of motor 6506961 the minimum permissible temperature is 15 °C at an undervoltage of 380 V
-10% = 342 V and a mains frequency of 60 Hz.
2)Key to the certificates:
UL certification mark for approved components for the USA.
UL certification mark for energy efficiency for listed products and approved components for Canada
and the USA.
Observe the data given on the motor name plate.
For special pumps please note the information contained in the supple-
mental sheet.
1.5 Accessories
Part Nos.
Exhaust filter AF 16-25 DOT 124 16
Exhaust filter AF 40-65 DOT upon request
Condensate trap AK 16-25 DOT upon request
AR 16-25 DOT upon request
Float switch LSS 16-25 for all models 200 39 838
FE 40-65 für AF 40-65 200 39 840
Use only the kind of accessories specified by Leybold
NOTICE

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2 Transport and Storing
To lift the pumps only use the handle provided for this purpose,
respectively use corresponding lifting facilities. When connecting or
removing 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 operating agents 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 shelved it
must be properly disconnected from the vacuum system, purged with dry
nitrogen 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 „0“ position and if the pump is to
be shelved for a longer period of time it should be sealed in a PE bag contai-
ning some desiccant (silica gel).
When a pump is put into operation after it has been shelved 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.
Transport and Storing
CAUTION

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Installation
3 Installation
Instructions for the operating personnel
Before any kind of assembly work the personnel must be informed about
to potential hazards. Observe Safety Informations 0.1 to 06.
3.1 Placement
Explosion risk
The standard pump is not suited for installation in the explosion hazard
areas. When planning such an application please contact us first.
Observe Safety Informations 0.5.
The TRIVAC-B-DOT pump can be set up on a flat, horizontal surface. Rubber
feet under the coupling housing ensure that the pump can not slip.
The location of the TRIVAC-B-DOT should be such that all controls are easily
accessible.
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 in
the rubber feet.
The rubber feet act as vibration absorbers. They must therefore not be
compressed by screws.
The site chosen should allow adequate air circulation to cool the pump
(keep front and rear unobstructed).
The oil-level glass must be visible.
Note the ambient conditions during operation
The ambient temperature should not exceed +40 °C (104 °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 Sales.
Maximum heat dissipation corresponds approximately to the installed
motor power.
When failing, capacitors may heat up excessively and generate smoke.
Therefore the pump must be placed with a sufficient clearance from
inflammable or combustible material. There exists the risk of fire!
DANGER
CAUTION
NOTICE
NOTICE
NOTICE

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3.2 Conforming Utilization
The TRIVAC-B-DOT- have been prepared especially for operation with
perfluoropolyther.
TRIVAC-B-DOT pumps can pump gases and vapours, and evacuate vessels
or vacuum systems in the fine vacuum range.
They are not suited for operation in explosion hazard areas.
The pumps are suited for pumping water vapour within the specified water
vapour 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. In the case of wet processes we recommend the
installation of liquid separators upstream and downstream of the pump as
well as the use of the gas ballast.
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
provided.
The TRIVAC-B-DOT is not suited for pumping of:
ncombustible and explosive gases or vapours
nOxidant
npyrophorous substances.
Our technical sales department is available for further advice in these matters.
Installation
NOTICE

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Installation
Fig. 7 Connections and controls
1 Handle
2 Intake port
3 Exhaust port
4 Level glass for the operating agent
5 Gas ballast knob
6 Threaded connection M 16 x 1.5
for inert gas ballast
7 Adaptor
8 Cover plate
9 Cover plate;
connection for the operating agent filter