Pfeiffer Vacuum HEPTA 400 P User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
HEPTA 400 P
Screw pump

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new screw pump is designed to
support you with its performance, perfect operation and without impacting your individual
application. The name Pfeiffer Vacuum represents high-quality vacuum technology, a
comprehensive and complete range of top-quality products and first-class service. With this
expertise, we have acquired a multitude of skills contributing to an efficient and secure
implementation of our product.
Knowing that our product must not interfere with your actual work, we are convinced that our
product offers you the solution that supports you in the effective and trouble-free execution of
your individual application.
Please read these operating instructions before putting your product into operation for the
first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-
vacuum.de.
Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on
our website.
Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
2/62

Table of contents
1 About this manual 7
1.1 Validity 7
1.1.1 Applicable documents 7
1.1.2 Variants 7
1.2 Target group 7
1.3 Conventions 7
1.3.1 Instructions in the text 7
1.3.2 Pictographs 8
1.3.3 Stickers on the product 8
1.3.4 Abbreviations 9
1.4 Trademark proof 9
2 Safety 10
2.1 General safety information 10
2.2 Safety instructions 10
2.3 Safety precautions 13
2.4 Limits of use of the product 13
2.5 Proper use 14
2.6 Foreseeable improper use 14
2.7 Personnel qualification 14
2.7.1 Ensuring personnel qualification 14
2.7.2 Personnel qualification for maintenance and repair 15
3 Product description 16
3.1 Function 16
3.1.1 Air cooling 16
3.1.2 Temperature monitoring 17
3.1.3 Thermometer 17
3.1.4 Shaft seal on motor side and vacuum side 17
3.1.5 Gas ballast 17
3.1.6 Sealing gas system 17
3.1.7 Safety valve 17
3.1.8 Non-return valve 17
3.2 Identifying the product 17
3.3 Product features 17
3.4 Scope of delivery 17
4 Transportation and Storage 18
4.1 Transport 18
4.2 Bearing 19
5 Installation 20
5.1 Setting up the vacuum pump 20
5.2 Connecting the vacuum side 20
5.3 Connecting the exhaust side 22
5.4 Connecting the sealing gas system 22
5.5 Connecting the gas ballast system 24
5.6 Connecting the flushing gas system 25
5.7 Installing the coupling 26
5.8 Connecting the silencer 26
5.9 Filling the cooling liquid 27
5.10 Filling with lubricant 28
5.10.1Filling lubricant on the motor side 29
5.10.2Filling lubricant on the vacuum side 29
5.11 Connect to mains power supply 30
5.11.1Connect three phase motor with 6-pin terminal board 31
Table of contents
3/62

5.11.2Connect three phase motor with 12-pin terminal board 31
5.12 Checking the direction of rotation 32
5.13 Connecting the water/air heat exchanger 33
5.14 Connecting the PTC thermistor tripping unit 34
6 Operation 36
6.1 Commissioning the vacuum pump 36
6.2 Switching on the vacuum pump 37
6.3 Conveying condensable vapors 37
6.4 Flushing the screw pump with fluid 38
6.5 Flushing the screw pump with gas 38
6.6 Switching off the vacuum pump 38
7 Maintenance 40
7.1 Maintenance information 40
7.2 Checklist for inspection and maintenance 41
7.3 Checking the lubricant level 41
7.4 Checking the cooling liquid level 42
7.5 Changing the lubricant 42
7.5.1 Draining lubricant on the motor side 44
7.5.2 Draining lubricant on the vacuum side 44
7.5.3 Filling lubricant on the motor side 45
7.5.4 Filling lubricant on the vacuum side 45
7.6 Changing the cooling liquid 46
7.6.1 Draining the cooling liquid 46
7.6.2 Filling the cooling liquid 47
7.7 Changing the gas ballast filter 48
7.8 Draining the condensate in the silencer 48
8 Decommissioning 50
8.1 Decommissioning the vacuum pump 50
8.2 Recommissioning 50
9 Recycling and disposal 52
9.1 General disposal information 52
9.2 Disposing of the screw pump 52
10 Malfunctions 53
11 Service solutions by Pfeiffer Vacuum 55
12 Accessories 57
12.1 Accessory information 57
12.2 Ordering accessories 57
12.3 Consumables 57
13 Technical data and dimensions 58
13.1 General 58
13.2 Technical data 58
13.3 Substances in contact with the media 58
13.4 Dimensions 59
EC Declaration of Conformity 60
UK Declaration of Conformity 61
Table of contents
4/62

List of tables
Tbl. 1: Stickers on the product 8
Tbl. 2: Abbreviations used in this document 9
Tbl. 3: Limits of use of the product 14
Tbl. 4: Characteristics of the screw pumps 17
Tbl. 5: Maximum permissible forces on the intake flange 21
Tbl. 6: Requirements for the sealing gas 24
Tbl. 7: Requirements for the ballast gas 25
Tbl. 8: Requirements for the flushing gas 26
Tbl. 9: Maintenance intervals 41
Tbl. 10: Troubleshooting 54
Tbl. 11: Accessories 57
Tbl. 12: Consumables 57
Tbl. 13: Conversion table: Pressure units 58
Tbl. 14: Conversion table: Units for gas throughput 58
Tbl. 15: Technical data for Hepta 400 P 58
Tbl. 16: Materials that make contact with the process media 59
List of tables
5/62

List of figures
Fig. 1: Position of sticker on the product shown as an example 8
Fig. 2: Operating principle 16
Fig. 3: Structure of the vacuum pump 16
Fig. 4: Transporting the vacuum pump 18
Fig. 5: Setting up the vacuum pump 20
Fig. 6: Connecting the sealing gas system 23
Fig. 7: Connecting the sealing gas system with nitrogen monitoring tablet 23
Fig. 8: Connection data for the solenoid valve 23
Fig. 9: Connection data for the flow rate monitor 24
Fig. 10: Connecting the gas ballast system 24
Fig. 11: Connection data for the solenoid valve 24
Fig. 12: Connecting the flushing gas system 25
Fig. 13: Connection data for the solenoid valve 25
Fig. 14: Installing the coupling 26
Fig. 15: Connecting the silencer 27
Fig. 16: Filling the cooling liquid 28
Fig. 17: Filling lubricant on the motor side 29
Fig. 18: Filling lubricant on the vacuum side 29
Fig. 19: Delta connection 31
Fig. 20: Star circuit 31
Fig. 21: Double star circuit 31
Fig. 22: Delta connection 32
Fig. 23: Star circuit 32
Fig. 24: Checking the direction of rotation 32
Fig. 25: Direction of air flow 33
Fig. 26: Connection data for the 24 V fan motor 33
Fig. 27: Delta connection 34
Fig. 28: Star circuit 34
Fig. 29: Connection example with PTC thermistor tripping unit 35
Fig. 30: Gas ballast valve 37
Fig. 31: Checking the lubricant level on the motor side 42
Fig. 32: Checking the lubricant level on the vacuum side 42
Fig. 33: Checking the cooling liquid level 42
Fig. 34: Draining lubricant on the motor side 44
Fig. 35: Draining lubricant on the vacuum side 44
Fig. 36: Filling lubricant on the motor side 45
Fig. 37: Filling lubricant on the vacuum side 45
Fig. 38: Draining the cooling liquid 46
Fig. 39: Filling the cooling liquid 47
Fig. 40: Changing the gas ballast filter 48
Fig. 41: Dimensions of Hepta 400 P 59
List of figures
6/62

1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This operating instructions is a customer document of Pfeiffer Vacuum. The operating instructions de-
scribe the functions of the named product and provide the most important information for the safe use of
the device. The description is written in accordance with the valid directives. The information in this op-
erating instructions refers to the product's current development status. The document shall remain valid
provided that the customer does not make any changes to the product.
1.1.1 Applicable documents
Document Number
Declaration of conformity A component of these instructions
You can find this document in the Pfeiffer Vacuum Download Center.
1.1.2 Variants
These instructions are applicable for HeptaDry vacuum pumps.
Pump type Pump version
Hepta 400 P Dry-compressing screw pump, air-cooled
1.2 Target group
This operating instructions is intended for persons who
●transport,
●installation,
●operate,
●decommissioning,
●servicing and cleaning,
●storage or disposal.
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications (experts).
1.3 Conventions
1.3.1 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
About this manual
7/62

1.3.2 Pictographs
The pictographs used in the document indicate useful information.
Note
Tip
true
false
1.3.3 Stickers on the product
This section describes all the stickers on the product along with their meanings.
Made in Germany
Year
Vacuum Pump
S/N = PPPPYYWWNNNN
p = 1 hPa (mbar)
abs V = 300 m³/h
max
-1
n = 3600 min
max m = 500 kg
Oil quantity = 1 LOil = Pfeiffer D1
D-35614 Asslar
V
p
n
Oil
D-3
Hepta 400 P
2019
PU V83 0004 000
Rating plate (example)
Rating plate for the screw pump
Mod.: xxx
Mod.-Nr.: PT 35S 235
Mass: 55 kg
n: xxxx 1/min
Motor rating plate
Rating plate of the motor
Warning hot surface
This sticker warns of injuries caused
by high temperatures as a result of
contact without safeguards during op-
eration.
Operating instructions note
This sticker indicates that this operat-
ing instructions must be read before
performing any tasks.
Arrow indicating direction of rota-
tion
The direction of rotation arrow indi-
cates the required motor rotation di-
rection.
Tbl. 1: Stickers on the product
12345
Fig. 1: Position of sticker on the product shown as an example
1 Arrow indicating direction of rotation 4 Hot surface warning sign
2 Hot surface warning sign 5 Operating instructions note
3 Rating plate for the screw pump
About this manual
8/62

1.3.4 Abbreviations
Abbreviation Meaning in this document
OI Operating instructions
FKM Fluorocarbon rubber
N.N. Mean sea level
PE Protective earth (earthed conductor)
WAF Width Across Flats
SLM Standard liter per minute
TThermal circuit breaker
VCI Volatile Corrosion Inhibitor
Tbl. 2: Abbreviations used in this document
1.4 Trademark proof
●Zitrec® M is a registered trademark of Arteco nv/sa.
●ROTEX® is a registered trademark of KTR Systems GmbH.
About this manual
9/62

2 Safety
2.1 General safety information
The following 4 risk levels and 1 information level are taken into account in this document.
DANGER
Immediately pending danger
Indicates an immediately pending danger that will result in death or serious injury if not observed.
►Instructions to avoid the danger situation
WARNING
Potential pending danger
Indicates a pending danger that could result in death or serious injury if not observed.
►Instructions to avoid the danger situation
CAUTION
Potential pending danger
Indicates a pending danger that could result in minor injuries if not observed.
►Instructions to avoid the danger situation
NOTICE
Danger of damage to property
Is used to highlight actions that are not associated with personal injury.
►Instructions to avoid damage to property
Notes, tips or examples indicate important information about the product or about this docu-
ment.
2.2 Safety instructions
All safety instructions in this document are based on the results of the risk assessment carried out in
accordance with Machinery Directive 2006/42/EC Annex I and DIN EN ISO 12100 Section 5. Where ap-
plicable, all life cycle phases of the product were taken into account.
Risks during transport
WARNING
Risk of serious injury from oscillating, toppling or falling objects
During transport, there is a risk of crushing and impact on oscillating, toppling or falling objects. There
is a risk of injuries to limbs, up to and including bone fractures and head injuries.
►Secure the danger zone if necessary.
►Note the center of gravity of the load during transport.
►Do not lift the vacuum pump via the eye bolt on the motor.
►Ensure harmonious movements and moderate speeds.
►Observe safe handling of the transport devices.
►Avoid sloping attachment aids.
►Never stack products.
►Wear protective equipment, e.g. safety shoes.
Safety
10/62

Risks during installation
DANGER
Danger to life from electric shock
Touching exposed and voltage-bearing elements causes an electric shock. Improper connection of
the mains supply leads to the risk of touchable live housing parts. There is a risk to life.
►Before the installation, check that the connection leads are voltage-free.
►Make sure that electrical installations are only carried out by qualified electricians.
►Provide adequate grounding for the device.
►After connection work, carry out an earthed conductor check.
WARNING
Danger of injury due to exposed rotating parts
Danger of crushing fingers and hands when the vacuum connection is open.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Never insert hands or fingers into the vacuum connection.
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g., increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
►Open shut-off units immediately before or at the same time as starting the pump.
►Take care that atmospheric pressure is always present on the exhaust side. Overpressure or un-
derpressure are not permissible.
►Check the function of the exhaust line on a regular basis.
Risks during operation
CAUTION
Health hazard from increased noise emission
Remaining in the close proximity of the vacuum pump for a sustained period of time may cause hear-
ing damage.
►Ensure adequate sound insulation.
►Wear hearing protection.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C.
►Provide suitable touch protection.
Risks during maintenance, decommissioning and malfunctions
DANGER
Danger to life from electric shock
Touching exposed and voltage-bearing elements causes an electric shock. Improper connection of
the mains supply leads to the risk of touchable live housing parts. There is a risk to life.
►Before the installation, check that the connection leads are voltage-free.
►Make sure that electrical installations are only carried out by qualified electricians.
►Provide adequate grounding for the device.
►After connection work, carry out an earthed conductor check.
Safety
11/62

WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
WARNING
Danger to life from electric shock in the event of a fault
In the event of a fault, devices connected to the mains may be live. There is a danger to life from
electric shock when making contact with live components.
►Always keep the mains connection freely accessible so you can disconnect it at any time.
WARNING
Health hazard and environmental damage from toxic contaminated lubricant
Toxic process media can cause lubricant contamination. When changing the lubricant, there is a
health hazard due to contact with poisonous substances. Illegal disposal of toxic substances causes
environmental damage.
►Wear suitable personal protective equipment when handling these media.
►Dispose of the lubricant according to locally applicable regulations.
CAUTION
Danger of injury from moving parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. There
is a risk of injury to fingers and hands if they enter the operating range of rotating parts.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Dismantle the vacuum pump for inspection, away from the system if necessary.
CAUTION
Danger of burns on hot surfaces
In the event of a fault, the surface temperature of the vacuum pump can increase to above 105 °C.
►Allow the vacuum pump to cool down before carrying out any work.
►Wear personal protective equipment if necessary.
CAUTION
Scalding from hot lubricant
Danger of scalding when draining lubricant if it comes into contact with the skin.
►Wear protective equipment.
►Use a suitable collection receptacle.
Safety
12/62

Risks during disposal
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
2.3 Safety precautions
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
General safety precautions when handling the product
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Do not expose body parts to the vacuum.
►Always ensure a secure connection to the earthed conductor (PE).
►Never disconnect plug connections during operation.
►Observe the above shutdown procedures.
►Keep lines and cables away from hot surfaces (> 70 °C).
►Never fill or operate the unit with cleaning agents or cleaning agent residues.
►Do not carry out your own conversions or modifications on the unit.
►Observe the unit protection class prior to installation or operation in other environments.
►Provide suitable touch protection, if the surface temperature exceeds 70 °C.
2.4 Limits of use of the product
Parameter Hepta 400 P
Installation location ● Indoors, protected from dust deposits
● Outdoors, protected from direct weather influences
Installation altitude max. 1000 m above sea level
Orientation Horizontal
permissible angle of inclination ± 1 °
Pumped medium intake temperature, max. ≤ 50 hPa: +200 °C
> 50 hPa: +70 °C
Ambient temperature 5 – 50 °C
Safety
13/62

Parameter Hepta 400 P
Relative humidity of air max. 95 % at 30 °C
Exhaust pressure Atmospheric pressure
Tbl. 3: Limits of use of the product
2.5 Proper use
►Use the vacuum pump for vacuum generation only.
►To protect the lubricant and the bearing, use sealing gas if high boiling, corrosive or particle-laden
media (e.g. solvents) are pumped.
►Operate the vacuum pump within the application limits of the product and in compliance with the
technical data.
►Adhere to the installation, commissioning, operating, and maintenance instructions.
►Use only accessory parts recommended by Pfeiffer Vacuum.
2.6 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as improper use; in particular:
●Pumping of corrosive media
●Pumping radioactive media
●Pumping of condensable vapors
●Pumping of gases that introduce an ignition source to the suction chamber
●Pumping of gases that contain impurities such as particles, dust or condensate
●Pumping of explosive media
●Pumping of media with a propensity to sublimation
●Pumping of fluids
●Use of the vacuum pump in areas with an explosion hazard
●Use of the vacuum pump outside the specified area of application
●Use for pressure generation
●Use in strong electrical, magnetic, or electromagnetic fields
●Connecting to vacuum pumps and units that are not designed for this purpose according to their
operating instructions
●Connecting to units with exposed live parts
●Use of accessories or spare parts not listed in these operating instructions
2.7 Personnel qualification
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications and the necessary experience.
Training people
1. Train the technical personnel on the product.
2. Only let personnel to be trained work with and on the product when under the supervision of
trained personnel.
3. Only allow trained technical personnel to work with the product.
4. Before starting work, make sure that the commissioned personnel have read and understood
these operating instructions and all applicable documents, in particular the safety, maintenance
and repair information.
2.7.1 Ensuring personnel qualification
Specialist for mechanical work
Only a trained specialist may carry out mechanical work. Within the meaning of this document, special-
ists are people responsible for construction, mechanical installation, troubleshooting, and maintenance
of the product, and who have the following qualifications:
●Qualification in the mechanical field in accordance with nationally applicable regulations
●Knowledge of this documentation
Safety
14/62

Specialist for electrical engineering work
Only a trained electrician may carry out electrical engineering work. Within the meaning of this docu-
ment, electricians are people responsible for electrical installation, commissioning, troubleshooting, and
maintenance of the product, and who have the following qualifications:
●Qualification in the electrical engineering field in accordance with nationally applicable regulations
●Knowledge of this documentation
In addition, these individuals must be familiar with applicable safety regulations and laws, as well as the
other standards, guidelines, and laws referred to in this documentation. The above individuals must
have expressly granted operational authorization, to commission, program, configure, mark, and earth
devices, systems, and circuits in accordance with safety technology standards.
Trained individuals
Only adequately trained individuals may carry out all works in other transport, storage, operation, and
disposal fields. Such training must ensure that individuals are capable of carrying out the required activi-
ties and work steps safely and properly.
2.7.2 Personnel qualification for maintenance and repair
Adequately trained individuals are:
●Maintenance level 1
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Pfeiffer Vacuum service technician
Safety
15/62

3 Product description
3.1 Function
The HeptaDry screw pumps function according to the double screw-pump principle. Two screw rotors
rotate in the compression chamber. The medium to be pumped is trapped between the individual screw
coils, compacted and transported to the gas outlet. During the compression process, the two screw ro-
tors do not come into contact with each other or with the suction chamber.
Fig. 2: Operating principle
Operation of this screw pump is instigated with each occurrence of intake pressure between atmos-
phere and final pressure. Despite contactless operation of the screw pump, no operating fluid, such as
oil or water, is necessary within the working chamber. A gas ballast valve, sealing gas device and/or
silencer can be installed at the gas exhaust, depending on the respective application.
18
6
7
14
15 13
12
12345
20 19
17
16
8
911
10
7
Fig. 3: Structure of the vacuum pump
1 Lifting eye (4x) 11 Motor terminal box
2 Gas ballast valve 12 Water/air heat exchanger/axial fan
3 Gas ballast filter 13 Cooler vent valve
4 Safety valve 14 Sight glass
5 Cooling liquid filler screw 15 Cooling liquid drain screw
6 Cooling liquid sight glass 16 Drain screw
7 Cooling liquid pump 17 Thermal circuit breaker
8 Thermometer 18 Cooling liquid drain screw
9 Vacuum connection 19 Exhaust connection
10 Filler screw 20 Cooling liquid drain screw
3.1.1 Air cooling
The cooling liquid in the compression chamber ensures an evenly distributed temperature within the
pumping system. The water/air heat exchanger cools the cooling liquid. The cooling liquid pump allows
a return flow back into the cooling liquid chamber.
Product description
16/62

3.1.2 Temperature monitoring
The switching temperatures are dependent upon the pump size and the type of cooling system. Tem-
perature monitoring prevents overheating and potential blockages in the screw pump.
3.1.3 Thermometer
The thermometer shows the cooling water temperature in the cooling water chamber.
3.1.4 Shaft seal on motor side and vacuum side
The sealing systems prevent any penetration of process gases into the storage chambers. A sealing
gas system may improve effectiveness of the sealing systems, depending on the respective application.
3.1.5 Gas ballast
An integrated gas ballast system serves the controlled supply of ambient air or inert gas into the suction
chamber. Gas ballast supports the reduction of condensate accumulating in the pumping system.
3.1.6 Sealing gas system
Sealing gas is used to protect the screw pump in dusty processes, or wherever excessive gas through-
puts are prevalent. Sealing gas prevents the ingress of damaging substances into the motor and bear-
ing area. The supply is carried out either via a sealing gas valve or a sealing gas throttle without control.
3.1.7 Safety valve
The safety valve prevents overpressure in the secondary cooling loop and opens at a pressure of
6000 hPa.
3.1.8 Non-return valve
The non-return valve prevents backflow of exhausted gases.
3.2 Identifying the product
►To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
►Observe the motor-specific data on the motor rating plate attached separately.
3.3 Product features
Pump type Characteristics
Hepta 400 P ●Nominal pumping speed at 50 Hz: 350 m3/h
●Nominal pumping speed at 60 Hz: 420 m3/h
● Air cooling
● Thermal circuit breaker
● Sealing systems
Tbl. 4: Characteristics of the screw pumps
3.4 Scope of delivery
●Screw pump
●Lubricant
●Locking caps for vacuum and exhaust connection
●Operating instructions
Product description
17/62

4 Transportation and Storage
4.1 Transport
WARNING
Risk of serious injury from oscillating, toppling or falling objects
During transport, there is a risk of crushing and impact on oscillating, toppling or falling objects. There
is a risk of injuries to limbs, up to and including bone fractures and head injuries.
►Secure the danger zone if necessary.
►Note the center of gravity of the load during transport.
►Do not lift the vacuum pump via the eye bolt on the motor.
►Ensure harmonious movements and moderate speeds.
►Observe safe handling of the transport devices.
►Avoid sloping attachment aids.
►Never stack products.
►Wear protective equipment, e.g. safety shoes.
NOTICE
Property damage as a result of lubricant leaking into the pumping system.
Tilting of the screw pump will cause lubricant to overflow into the pumping system.
►Always transport the screw pump horizontally.
►Always transport the screw pump without lubricant.
►Only fill up lubricant at the final installation location.
Preparations for transport
Pfeiffer Vacuum recommends keeping the transport packaging and original protective cov-
er.
Safe transport of the product
►Observe the weight specified on the packaging.
►Use personal protective equipment, e.g. safety shoes.
►Use transport equipment (e.g. fork lift truck or lift truck).
►Where possible, always transport or ship the product in the original packaging.
►Be mindful of transport damage.
►Always place the product on an adequately sized, level surface.
1
Fig. 4: Transporting the vacuum pump
1 Lifting eye (4x)
Transportation and Storage
18/62

Transporting vacuum pump without packaging
1. Unpack the vacuum pump.
2. Leave the protective caps on the connectors during transport.
3. For lifting, use the crane lug on the top of the pump.
4. Lift the vacuum pump out of the transport packaging.
5. Always place the vacuum pump on an adequately sized, level surface.
4.2 Bearing
Storage
Pfeiffer Vacuum recommends storing the products in their original transport packaging.
Store the vacuum pump
1. Seal the vacuum and exhaust connection.
2. Make sure that the gas ballast valve is closed.
3. Store the vacuum pump only in dry, dust-free rooms, within the specified ambient conditions.
4. In rooms with humid or aggressive atmospheres: Hermetically seal the vacuum pump together
with a drying agent in a plastic bag.
5. Replace the lubricant if storage is to exceed a period of more than 2 years.
Store the vacuum pump for longer periods
Preserve the vacuum pump if the vacuum pump is exposed to unfavorable ambient conditions (e.g. ag-
gressive environment, extreme fluctuations in temperature) or if the equipment is to be in storage for a
period of more than 3 months.
1. Drain the lubricant and cooling water.
2. Close all openings so that they are airtight.
3. Secure any loose parts (e.g. sealing rings, flat seals) with adhesive tape.
4. Wrap the vacuum pump in VCI film.
5. Only store the vacuum pump in dry, dust-free and rooms which are not exposed to vibrations.
6. Where possible, store the vacuum pump in its original transport packaging.
Transportation and Storage
19/62

5 Installation
5.1 Setting up the vacuum pump
~50 cm
~20 cm
~20 cm
~20 cm
Fig. 5: Setting up the vacuum pump
Safe installation of product
1. Place the vacuum pump on a flat, horizontal surface which will ensure supply of the lubricant.
2. Observe the permissible angle of inclination of ±1°.
3. If necessary, fasten the vacuum pump to the threaded holes of the anti-vibration buffer on a sturdy
and horizontal base.
4. When installing the pump in a closed housing, ensure adequate air circulation.
5. Install the vacuum pump with adequate room to carry out maintenance work.
6. Ensure that the sight glass can be clearly seen and is easily accessible on the motor side and
vacuum side.
7. Keep the voltage and frequency specifications on the motor rating plate visible and freely accessi-
ble.
5.2 Connecting the vacuum side
WARNING
Danger of injury due to exposed rotating parts
Danger of crushing fingers and hands when the vacuum connection is open.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Never insert hands or fingers into the vacuum connection.
NOTICE
Property damage from contaminated gases
Pumping gases that contain contamination damages the vacuum pump.
►Use suitable filters or separators from the Pfeiffer Vacuum range of accessories, to protect the
vacuum pump.
Installation
20/62