LEYBOLD Ruvac WH 700 User manual

Part Numbers
155 202 – 155 209V
167 186V
RUVAC WH 700
Roots booster with synthetic oil or PFPE-filling
Installation and Operating Instructions GA03122_002_C0

Contents
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Page
0 Important Safety Information 5
0.1 Mechanical Hazards 5
0.2 Electrical Hazards 6
0.3 Thermal Hazards 7
0.4 Hazards Caused by Materials and Substances 7
0.5 Ignition Risk 9
0.6 Noise Hazard 10
0.7 Danger of Damaging the Pump 10
1 Description 12
1.1 Design and Function 12
1.2 Standard Specification 13
1.3 Technical Data 14
1.4 Ordering Information 17
1.5 Accessories 17
2 Transport and Storing 18
3 Installation 20
3.1 Placement 20
3.2 Connection of the Flanges 21
3.3 Filling in of the Lubricant 22
3.4 Conforming Use 22
3.4.1 Non-conforming Use 23
3.5 Connecting the Cooling Water 24
3.5.1 Water Quality 25
3.6 Electrical Connection 26
3.6.1 Checking the Direction of Rotation 33

Contents
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These installation and operating instructions are the original instructions.
4 Operation 34
4.1 Start-up 34
4.2 Operation 35
4.2.1 Operation with External Frequency Converter 36
4.3 Switching off and Decommissioning 37
5 Maintenance 38
5.1 Safety Information 38
5.2 Changing the Lubricant 39
5.3 Cleaning the Inlet Screen 41
5.4 Cleaning the Pump Chamber 41
5.5 Service at Leybold 42
5.6 Maintenance Intervals 43
6 Troubleshooting 48
7 Wearing and Original Spare Parts 50
8 Waste Disposal 50

Safety information
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Obligation to Provide Information
Before installing and commissioning the pumps, carefully read these
Operating Instructions and follow the information so as to ensure optimum
and safe working right from the start
The Leybold RUVAC WH 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 Instructions. It
must be operated 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 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.
We reserve the right to modify the design and the specified data. The illustra-
tions are not binding.
Retain the Operating Instructions for further use.
NOTICE
DANGER
WARNING
CAUTION
NOTICE

Safety information
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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 Even during standstill of the RUVAC it is dangerous to grasp into the
pump casing. Fingers can easily be squeezed between impellers due
to the high inertia of the parts. Please use caution when grasping into
the pump and make sure that the pump is secured against unwanted
rotation due to differential pressures.
3 The lifting eyes of the RUVAC must never be used to lift any pump
combinations (Roots pump + backing pump). Exceptions are allowed
only after approval by Leybold. Use a crane to secure the pump at the
lifting eyes provided until a firm link has been established with the
backing pump or a corresponding fixture.
4 Do not operate the pump with an opened casing. There exists the risk
of suffering injury.
5 Never operate the pump without connected intake line or a blank
flange at the intake.
6 Make sure that the gas flow at the discharge is not blocked or restrict-
ed in any way.
7 It is recommended to always only operate the RUVAC with a suitable
exhaust line which is properly connected.
8 If exhaust gases must be collected or contained, do not allow the
exhaust line to become pressurized.
9 When moving the RUVAC always use the allowed means. Two lifting
eyes are provided on this pump as standard.
10 Do not allow the ingestion of small objects (screws, nuts, washers,
pieces of wire, etc.) through the intake port. The use of an inlet screen
is expressly recommended. In case the pump is operated without inlet
screen the operator has to make sure that no objects can enter the
pump through the intake port. Objects falling into the pump can cause
severe damage at the pump including leaks to atmosphere.
11 In case malfunctions affect the pump, in particular seized rotors due to
hard deposits or foreign objects, the occurrence of leaks in the casing
cannot be ruled out. When pumping hazardous gases, the operator
must ensure that such a malfunction cannot occur, respectively that
leaks at the pump casing will not present a hazard.
12 In order to avoid the destruction of systems and injury to operating
personnel we urgently recommend to observe the information and
installation information provided in these Operating Instructions
WARNING

Safety information
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13 First open the cooling water discharge, then the cooling water supply.
Otherwise an excessively high water pressure can build up within the
pump. When shutting down the cooling water supply proceed in the
reverse order: first shut off the water supply, then the water discharge.
14 The pumps must only be operated at the allowed speeds. In particular
when using frequency converters not approved by Leybold you must
ensure an effective protection against overspeeding.
0.2 Electrical Hazards
1 Potentially lethal voltages are present at the mains connections. Before
beginning with any maintenance or service work on the pump, discon-
nect the pump from all power supplies (lockout/tagout).
2 The electrical connection must only be provided by a trained person.
Please observe the national regulations in the country of use like
EN50110-1 for Europe, for example.
3 Before starting the electric motor for the first time provide upfront a
suitable motor protection switch. Please notice the information provid-
ed in these Operating Instructions and on the electric motor (wiring
diagram).
4 Before starting, check to ensure that the junction box is undamaged,
run a visual inspection on the seals.
5 Install add-on parts (pressure switches, for example) without any
mechanical tensions and protect these against being damaged by
impacts, for example.
6 Lay the connecting lines so that these cannot be damaged. Protect
the lines against humidity and contact with water. Avoid thermally
stressing the lines by unfavourable laying. Comply with the required
standards when designing and laying the electrical connections.
7 Provide strain relief for the connecting lines so that the plugs and the
line connectors are not subjected to excessively high mechanical
stresses.
8 Lay electric lines so that there is no risk of tripping over these.
9 The RUVAC if must be integrated in the system control arrangement
so that the pump can not run-up automatically after it has been shut
down due to overtemperature. This applies equally to emergency shut-
down arrangements. After having determined the fault cause, the
pump should be switched on manually again.
10 The following applies to FC operated pumps: after a mains power fail-
ure the pump will automatically run up once the mains power returns.
DANGER

Safety information
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0.3 Thermal Hazards
1 Hot surfaces, risk of suffering burns
Under certain ambient conditions the pump may attain temperatures
over 80° C. There then exists the risk of suffering burns. Note the dan-
ger symbols on the pump and in the case of a hot pump wear the
required protection equipment.
If there is the risk of touching hot surfaces inadvertently, install corre-
sponding protection. When working on a pump which is still warm
from operation, always wear protective gloves.
2 The pump must only be operated at ambient temperatures between
12 to 45 °C. The thermal radiation produced by the pump must be
removed to a sufficient extent. If for whatever reason the pump needs
to be operated at higher ambient temperatures, then reduced maxi-
mum pressure differences apply (derating). For operation under such
conditions please consult Leybold.
3 Operating the pump with less than the specified amount of cooling
water will result in excessively high surface temperatures which can
damage the pump. Moreover, there exists the risk of suffering burns.
4 Before disassembling any cooling water lines, leave the pump to cool
down first, then shut off the feed line.
5 Before doing any servicing or maintenance work, always let the pump
cool down first.
6 Take note of the warning information on the casing surface. If this
warning information was removed, covered or obstructed, then pro-
vide corresponding additional warning information.
0.4 Hazards Caused by Materials and Substances
1 The vacuum line must be leaktight. Hazardous process gases may
escape or the pumped gases can react with air or atmospheric humid-
ity. After installation of the pump and after servicing work on the vacu-
um system, a leak test will always be necessary.
When pumping hazardous gases we recommend a leak test on a reg-
ular basis. Leaks in the pump cannot be ruled out under all circum-
stances. When pumping hazardous gases, the operator must ensure
that leaks at the pump will not be a hazard.
2 Since not all application related hazards for vacuum systems can be
described in detail in these Operating Instructions, Leybold has availa-
ble a separate document (Safety Booklet) in which the hazards and
general safety concepts for design, operation and maintenance of vac-
uum systems are explained.
When planning to pump hazardous substances with this pump, read
the related chapters in the Safety Booklet and in these Operating
Instructions first. You can download the Safety Booklet from our
homepage.
CAUTION
DANGER

Safety information
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3 Before commissioning the pump, make sure that the media which are
to be pumped are compatible with each other so as to avoid hazard-
ous situations.
4 If required additional monitoring of the purge gas quantities is neces-
sary from the side of the operator when a well-defined and ensured
dilution is necessary from the side of the process.
The type of protection depends on the specific process and needs to
be assessed by of the customer.
5 The cooling water from the return is not of drinking water quality and
should not be used for this purpose.
After having operated the pump, the cooling water lines may suffer
from microbiological contamination. Take appropriate safety precau-
tions.
6 When the pump has been used to pump hazardous gases before,
introduce appropriate safety precautions before opening the intake or
the discharge connections. Before opening the pump, purge it for a
longer period of time with an inert gas. If necessary, wear suitable per-
sonal protection equipment like gloves, breathing protection and pro-
tection clothing, for example (see Material Safety Data Sheets for the
substances in use, the chemical reactions and the by-products). Firmly
seal off the pump. When shipping the contaminated pump for servic-
ing please also indicate the type of hazard. For this see Section 5.5
Service at Leybold.
7 Leybold is not in a position to perform servicing (repairs) and waste
disposal of radioactively contaminated pumps. Both needs to be
ensured from the side of the user.
8 When disposing of the pump, used lubricants and used oil filters,
observe the applicable environment regulations.
9 When pumping hazardous gases you must assume the presence of
hazardous residues in the pump.
10 If the pump has been contaminated by the process or through envi-
ronmental influences, it must be decontaminated professionally.
Contaminated parts can be detrimental to health and the environment.
Before beginning with any repair and maintenance work inform yourself
about any possible contamination. When handling contaminated parts
observe the pertinent regulations and comply with the necessary pro-
tection measures.
When shipping contaminated pumps which require approval by the
authorities, note the applicable regulations regarding packaging and
shipping.

Safety information
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11 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 way 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.
12 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 Ignition Risk
1 As a rule, the RUVAC pumps must not be used with flammable or
explosive mixtures. In particular cases the composition of the sub-
stances may not be critical. In this case the user is obliged to analyse
this carefully and to take appropriate precautions introduced by com-
petent experts.
2 Before pumping oxygen (or other highly reactive gases) at concentra-
tions exceeding the concentration in the atmosphere (> 21 % for oxy-
gen) 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.
3 Before commissioning the pump, 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
observed.
4 The standard version of the RUVAC is not suited for operation in
explosion hazard areas. Contact us before planning to use the pump
under such circumstances.
DANGER

Safety information
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0.6 Noise Hazard
1 The noise level produced by the RUVAC is between 63 and 75 dB(A).
When operating the pump temporarily at pressures above 100 mbar
the noise level can be very much higher. Make sure that suitable pro-
tection measures are taken to protect your hearing ability.
2 When the pump is being started with open flanges, a noise level which
is detrimental to health will be produced. If such operation is unavoida-
ble, then it is mandatory to wear hearing protectors (ear muffs).
0.7 Danger of Damaging the Pump
1 The pump is not suited for applications that produce abrasive or adhe-
sive substances or condensable vapours which leave adhesive or high
viscosity deposits. Please contact Leybold in order to select proper
separators, for example.
2 Do not allow the ingestion of any objects (screws, welding beads,
nuts, washers, pieces of wire, etc.) through the intake port of the
pump.
If possible, use the intake screen which has been fitted as standard
and clean it regularly.
In case the pump is operated without intake screen the operator has
to make sure that no objects can enter the pump through the intake
port. Objects falling into the pump can cause severe damage at the
pump including leaks to atmosphere.
The intake screen does not replace a filter. Prevent the intake of parti-
cles from the side of the process by fitting suitable filters.
3 Vapours which condense upon being compressed within the pump to
liquids must be avoided when their vapour pressure exceeds the
vapour tolerance of the pump.
4 Before pumping condensable vapours the pump should be at operat-
ing temperature. The pump will attain its operating temperature
approximately one hour after having started the pump. During this
warm-up phase, the pump should be left separated from the process
by a valve in the intake line, for example.
5 In order to prevent the transfer of vibrations from the RUVAC to other
system components which have been connected, we recommend fit-
ting of corrugated hoses respectively compensators on the intake and
the discharge side.
6 Do not operate the RUVAC in connection with backing pumps where
an ultimate pressure exceeding 10 mbar is specified. This will prevent
excessively high temperatures when the RUVAC is running idle.
7 Maximum cooling water pressure: 6 bar. When exceeded, there is the
risk of leaks.
8 In the case of wet processes we recommend the installation of liquid
separators, upstream and downstream of the pump so as to avoid the
influx of liquid into the pump.
CAUTION
NOTICE

Safety information
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9 The discharge line should be laid so that it slopes down and away
from the pump so as to prevent condensed vapours from backstream-
ing into the pump.
10 The ingress of particles and liquids must be avoided.
11 Before installing, all flange covers must be removed.
12 The location of the RUVAC should be such that all controls are easily
accessible.
13 In order to ensure an adequate oil supply, the location at which the
pump (including its accessories) is operated should be such that
angles over > 5° from the vertical are avoided.

Description
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1 Description
1.1 Design and Function
The RUVAC pumps are Roots vacuum pumps which are driven by a water
cooled hermetically sealed motor. They are lubricated with synthetic oil or
perfluorized polyether (PFPE). The WH 700 may be connected directly to the
mains power or an external frequency converter.
The pumps have been designed to pump gas in the vertical direction.
Although the pumping chamber of Roots pumps is free of sealing agents and
lubricants, the two gearwheels of the synchromesh gearing and the bearings
are lubricated with synthetic oil or PFPE. The two bearing chambers are
separated from the pumping chamber by the impeller seals.
RUVAC pumps are driven by a water cooled hermetically sealed motor. The
motor runs completely under vacuum and is sealed against atmosphere.
Thus a shaft feedthrough to the atmosphere is not needed.
The RUVAC 700 is available with two different motors:
■for mains powered 50/60 Hz operation
■for frequency converter operation at frequencies from 20 to 120 Hz.
PTC temperature resistors have been integrated in the stator coil of the
motors.
At the RUVAC WH 700, Part No. 167186V, the frequency converter is mount-
ed to the pump with a matching housing.
Temperature sensors
Fig. 1.1 Schematic cross-section of a Roots pump (vertical flow)
1
2
3
4
5
1 Intake flange
2 Pumping chamber
3 Casing
4 Impeller
5 Discharge flange

Description
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Lubricants
The RUVAC WH 700 pumps are prepared for use with synthetic oil or for use
with PFPE special lubricant (perfluoropolyether).
Only the pumps with PFPE lubricant may be used to pump highly aggressive
and hazardous gases. Under such operating conditions it is mandatory to
consult Leybold for detailed information.
Since mineral oil and PFPE emulsify when coming into contact with each
other, the pumps may only be operated with the type of lubricant specified
for the specific pump. Conversion to a different type of lubricant should be
left to Leybold only.
For operation with synthetic oil we recommend our vacuum pump oil
LVO210, and in the case of operation with PFPE we recommend LVO 400.
1.2 Standard Specification
Before delivery of the pump, the oil has been drained out. It is supplied sepa-
rately with the pump.
The pump is supplied with ISO-K gasket (including inlet screen) for use on
the intake side.
The pump has been vented with nitrogen to protect it against corrosion.
NOTICE
Fig. 1.2 RUVAC WH 700, Part No. 167186V

Description
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1.3 Technical Data
RUVAC WH 700 50 Hz 60 Hz 80 Hz 1) 120 Hz 1)
Nominal pumping speed 2) m3·h-1 710 860 1150 1730
Max. effective pumping speed
with backing pump SOGEVAC SV 300 B
m3·h-1 620 740 950 1310
Max. permissible pressure difference
during continuous operation 3), 4), 5)
mbar 75 65 50 30
Leak rate, integral mbar ·l ·s-1 < 1 · 10-5
Mains voltage
FC operation
Mains operation
V
340 to 530
180 to 260
360 to 440
180 to 260
340 to 530
180 to 260 6)
410 to 500
210 to 260 6)
340 to 530
180 to 260
–
–
340 to 530
180 to 260
–
–
Max. permissible pressure difference
at mains voltage 5)
200 V
400 V
mbar
50
60
50
60
40
45
25
25
Permissible ambient temperatures °C +5 to +45
Nominal power consumption
FC operation
Mains operation
kW
3.5
2.2
3.5
2.6
3.5
–
3.5
–
Idle mode power consumption kW 0.5
Energy efficiency class IE 2
Nominal speed rpm 3000 3600 4800 7200
Max. permissible speed 7) rpm 7200
Type of protection IP 55
Water connection (4 pcs.) G1/4", female
Cooling water quantity 8) l/min 1 to 3
Cooling water admission temperature °C 5 to 35
Permissible cooling water pressure bar 2 to 6
Lubricant 9)
gear side
motor side
l
0.6
0.3
Connection flange
Inlet
Outlet
DN ISO-K
100
63
Weight kg 125
Dimension (W x B x H) mm 709 x 265 x 270
Noise level 10) dB(A) < 56 < 56 < 60 < 60

Description
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Notes to the technical data
1) Only possible with frequency converter motor and external frequency converter
2) To DIN 28 426 and subsequent numbers
3) Higher pressure differences are possible. Please contact Leybold
4) Gas temperatures over 40 °C can result in a reduction of the pressure difference values; please consult Leybold on this
5) The optional frequency converter automatically reduces the rotational speed of the rotors so as to compensate for overloads.
During operation do not expose the pump to sudden pressure increases like shock venting to atmospheric pressure,
for example
6) Requires 200 V FC variant and 200 V motor
7) Min. permissible speed: 1200 rpm if run for more than 1 hour
8) The cooling water quantity can be reduced provided the temperature of the discharged water does not exceed 45 °C
9) Authoriative, however, is the oil level at the oil-level glass
10) Valid under ultimate pressure conditions. Pressures over 10 mbar produce a higher operating noise

Description
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Fig. 1.3 Motor current limits for overload protection for the WH 700
15
14
10.5
8.8
8.4
7.6
7
5.2
4.4
4.2
0
2
4
6
8
10
12
14
16
20 40 60 80 100 120
Frequenz [Hz]
Motorstrom [A]
200V FC Motor
400V FC Motor
Fig. 1.4 Dimensional drawing
Motor current [A]
Frequency [Hz]
705
258
M8x8
276
168
270
156 114
272
140 132
200

Description
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1.5 Accessories
Frequency converter incl. mains filter
200 / 240 V, motor power 4 kW (for P/N 155 204V) 155 218V
400 / 480 V, motor power 4 kW (for P/N 155 205V and 155 207V) 155 217V
LCD Display (for P/N 155 217V and 155 218V) 155 213V
USB Copy Unit (for P/N 155 217V and 155 218V) 155 214V
Profibus DP Module (for P/N 155 217V and 155 218V) 155 212V
ProfiNet Module 112005A35
EtherCAT Module 112005A36
Relay module (digital output) 112005A01
Ethernet interface board 112005A02
Oil drain facility (M 16 x 1.5) with 90° discharge coupling 200 14 271
Reducer DN 100/63 ISO-K 267 47
Spare Part: Major maintenance kit EK 110 002 691
Frequency converter dimensions incl. mains filter
Yaskawa W x H x D
Part No. Designation for RUVAC Description incl. mains filter
155 217V CIMR-VC 4A0011BAA WH 700 400 V 4 kW 140 x 128 x 190
155 218V CIMR-VC 2A0020BAA WH 700 200 V 4 kW 140 x 128 x 190
1.4 Ordering Information
P/N Motor Motor power Motor voltage Motor frequency Frequency Type of oil
type converter
WH 700
155 202 DOL 2.2 kW/ 2.6 kW 200 V/240 V ± 10 % 50 Hz / 60 Hz no LVO 210
155 203 DOL 2.2 kW/ 2.6 kW 400 V/460 V ± 5 % 50 Hz / 60 Hz no LVO 210
155 204V FC 3.5 kW at 80 Hz 200 V ± 5 % 20 Hz to 120 Hz yes (external) LVO 210
155 205V FC 3.5 kW at 80 Hz 400 V ± 5 % 20 Hz to 120 Hz yes (external) LVO 210
155 207V FC 3.5 kW at 80 Hz 400 V ± 5 % 20 Hz to 120 Hz yes (external) LVO 400 (PFPE)
155 208V DOL 2.2 kW / 2.6 kW 200 V/240 V ± 10 % 50 Hz / 60 Hz no LVO 400 (PFPE)
155 209V FC 3.5 kW bei 80 Hz 200 V ± 5 % 20 Hz to 120 Hz yes (external) LVO 400 (PFPE)
167 186V FC 3.8 kW 400 V ± 5 % 20 Hz to 120 Hz yes (internal) LVO 400 (PFPE)

Transport and storing
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2 Transport and Storing
Roots pumps are heavy machines made of cast iron and thus should only be
lifted using suitable lifting equipment tied to the lifting eyes provided for this
purpose.
See fig. 2.1 for correct lifting of the pump.
Please be aware that the RUVAC is not designed to be tilt resistant
without affixing it to a suitable supporting structure. Serious injury can
result if the pump is dropped or not handled properly.
When the pump is connected to a backing pump or mounted to a frame,
ensure sufficient resistance against toppling (for this, note the centre of
gravity depicted in fig. 2.1).
When the pump is removed from the shipping container it has to be
secured with suitable lifting equipment until it is safely joined to a vacuum
flange or a rack that is stable enough to support the weight of the pump.
CAUTION
Fig. 2.1 Transporting the pump
Lifting eyes
c
max. 90°
Centre of gravity
(Dimensions in mm)
a
a b c
WH 700 81 119 9
b

Transport and storing
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Before transporting, the cooling water must be drained out first so as to
avoid damage caused by frost.
Before transporting the pump always drain out the oil. Screw the oil-drain
plug with its gasket back in and wipe any oil droplets off from the casing.
The pump should be transported and stored in a horizontal position.
Otherwise there is the danger that oil from the side chambers may enter
the pump chamber, even before the pump is filled with oil for the first time.
When shelving the pump for a longer period of time you should seal off the
flanges of the pump with the plastic discs and blanking off collars supplied
for shipping. If require place a bag with desiccant in the pump chamber.
Before operating the pump once more do not forget to remove this bag
first.
Pumps having a filling of PFPE should be sealed off in a gas-tight manner
and vented with nitrogen so as to prevent corrosion.
Temperature (only when stored without cooling water!) -20 °C ... +60 °C
Storage location dry
Max. relative atmospheric humidity 95 %, not 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.
Refer to the frequency converter Operating Instructions when a frequency
converter was longer than 2 years on stock.
NOTICE

Installation
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3 Installation
Only fill in the oil after having horizontally installed the pump.
If the pump is connected to a backing pump or bolted to a rack, sufficient
protection against toppling must be ensured (for this note the centre of
gravity depicted).
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 modi-
fied and de-greased, and an inert special lubricant (like PFPE) must be
used.
3.1 Placement
Install RUVAC pumps on a flat, horizontal surface (2° max. tilt).
If the pump is not levelled, lubricant may enter the pumping chamber from
the gear chambers.
The pump’s ambient temperature should be between 12 °C und 45 °C.
Lower temperatures hamper run-up; higher ones shorten the lubricant
change intervals and may lead to greater wear. Moreover, the pump attains
its thermal operating limit faster.
Secure the pump. Four bores in the bottom of the pump casing (M8) are pro-
vided for this purpose.
NOTICE
Abb. 3.1 Connections at the pump
Intake flange
Discharge
flange
Direction of
rotation arrow
Junction box
Cooling water connections
(see also fig. 3.3)
Cooling water connections
(see also fig. 3.3)
Oil sight glass
Oil sight glas