vacuubrand ME 2 NT User manual

page 1 of 88
Instructions for use
Technology for Vacuum Systems
Diaphragm pumps
ME 2 NT - ME 4 NT - ME 4S NT
MZ 2 NT - MZ 2D NT - MZ 2S NT
ME 8 NT - ME 8S NT - MD 4 NT - MD 4S NT - MV 2 NT
ME 4R NT
MD 4CRL NT

page 2 of 88
After sales service:
Contact your local dealer or call [phone].
Dear customer,
Your VACUUBRAND diaphragm pumps are designed to provide you with
many years of trouble-free service with optimal performance. Our many
years of practical experience allow us to provide a wealth of application
and safety information. Please read these instructions for use before the
initial operation of your pump.
VACUUBRAND diaphragm pumps combine our many years of experi-
ence in design, construction and practical operation, with the latest de-
velopments in material and manufacturing technology.
Our quality maxim is the ”zero defect” principle:
Every diaphragm pump, before leaving our factory, is tested intensively,
including an endurance run of 14 hours. Any faults, even those which oc-
cur rarely, are identied and can be eliminated immediately.
After completion of the endurance run, every pump is tested, and must
achieve specications before shipment.
We are committed to providing our customers only pumps that meet this
high quality standard.
While our pumps cannot eliminate all of your work, we design, manufac-
ture and test them to ensure that they will be an e󰀨ective and trouble-free
tool to assist you in that work.
Yours,
VACUUBRAND GMBH + CO KG
Trademark index:
VACUU•LAN®(US-Reg.No 3,704,401), VACUU•BUS®, VACUU•CONTROL®,
Peltronic®, VARIO® (US-Reg.No 3,833,788), VACUUBRAND®(US-Reg.No
3,733,388) and also the shown company logos are registered trademarks
of VACUUBRAND GMBH + CO KG in Germany and/or other countries.

page 3 of 88
DE
Achtung: Die vorliegende Betriebsanleitung ist nicht in allen EU-Sprachen verfügbar. Der Anwen-
der darf die beschriebenen Geräte nur dann in Betrieb nehmen, wenn er die vorliegende Anleitung
versteht oder eine fachlich korrekte Übersetzung der vollständigen Anleitung vorliegen hat. Die
Betriebsanleitung muss vor Inbetriebnahme der Geräte vollständig gelesen und verstanden wer-
den, und alle geforderten Maßnahmen müssen eingehalten werden.
”Sicherheitshinweise für Vakuumgeräte”
EN
Attention: This manual is not available in all languages of the EU. The user must not operate the
device if he does not understand this manual. In this case a technically correct translation of the
complete manual has to be available. The manual must be completely read and understood be-
fore operation of the device and all required measures must be applied.
”Safety instructions for vacuum equipment”
FR
Attention: Le mode d’emploi présent n’est pas disponible dans toutes les langues d’Union Euro-
péenne. L’utilisateur ne doit mettre le dispositif en marche que s’il comprend le mode d’emploi
présent ou si une traduction complète et correcte du mode d’emploi est sous ses yeux. Le dis-
positif ne doit pas être mis en marche avant que le mode d’emploi ait été lu et compris complète-
ment et seulement si le mode d’emploi est observé et tous les mesures demandées sont prises.
«Avis de sécurité pour des dispositifs à vide»
BG
Внимание: Тези инструкции не са преведени на всички езици от ЕО. Потребителят не бива
да работи с уреда, ако не разбира инструкциите за ползване. В този случай е необходимо
да бъде предоставен пълен технически превод на инструкциите за ползване. Преди работа
с уреда е задължително потребителят да прочете изцяло инструкциите за работа.
”Указания за безопасност за вакуумни уреди”
CN
注意：该操作手册不提供所有的语言版本。操作者在没有理解手册之前，不能操作该设备。在这
种情况下，需要有一个整个操作手册技术上正确的翻译。在操作该设备前，必须完全阅读并理解
该操作手册，必须实施所有需要的测量。
真空设备的安全信息
CZ
Upozornění :Tento návod k použití není k dispozici ve všech jazycích Evropské unie. Uživatel
není oprávněn požít přístroj pokud nerozumí tomuto návodu. V takovém případě je nutno zajistit
technicky korektní překlad manuálu do češtiny. Návod musí být uživatelem prostudován a uživa-
tel mu musí plně porozumět před tím než začne přístroj používat. Uživatel musí dodržet všechna
příslušná a požadovaná opatření.
”Bezpečnostní upozornění pro vakuové přístroje”.
DA
Bemærk: Denne manual foreligger ikke på alle EU sprog. Brugeren må ikke betjene apparatet
hvis manualen ikke er forstået. I det tilfælde skal en teknisk korrekt oversættelse af hele manual
stilles til rådighed. Manual skal være gennemlæst og forstået før apparatet betjenes og alle nød-
vendige forholdsregler skal tages.
»Sikkerhedsregler for vakuumudstyr«

page 4 of 88
EE
Tähelepanu! Käesolev kasutusjuhend ei ole kõigis EL keeltes saadaval. Kasutaja ei tohi seadet
käsitseda, kui ta ei saa kasutusjuhendist aru. Sel juhul peab saadaval olema kogu kasutusjuhen-
di tehniliselt korrektne tõlge. Enne seadme kasutamist tuleb kogu juhend läbi lugeda, see peab
olema arusaadav ning kõik nõutud meetmed peavad olema rakendatud.
”Ohutusnõuded vaakumseadmetele”
ES
Atención: Este manual no está disponible en todos los idiomas de UE. El usuario no debe mane-
jar el instrumento si no entiende este manual. En este caso se debe disponer de una traducción
técnicamente correcta del manual completo. El manual debe ser leído y entendido completamen-
te y deben aplicarse todas las medidas de seguridad antes de manejar el instrumento.
”Notas sobre la seguridad para equipos de vacío”
FI
Huomio: Tämä käyttöohje ei ole saatavilla kaikilla EU: n kielillä. Käyttäjä ei saa käyttää laitetta,
jos hän ei ymmärrä tätä ohjekirjaa. Tässä tapauksessa on saatavilla oltava teknisesti oikein tehty
ja täydellinen ohjekirjan käännös. Ennen laitteen käyttöä on ohjekirja luettava ja ymmärrettävä
kokonaan sekä suoritettava kaikki tarvittavat valmistelut ja muut toimenpiteet.
”Vakuumilaitteen turvallisuustiedot”
GR
Προσοχή! : Οι οδηγίες αυτές δεν είναι διαθέσιµες σε όλες τις γλώσσες της Ευρωπαϊκής Ένωσης.
Ο χρήστης δεν πρέπει να θέσει σε λειτουργία την συσκευή αν δεν κατανοήσει πλήρως τις οδηγίες
αυτές. Σε τέτοια περίπτωση ο χρήστης πρέπει να προµηθευτεί ακριßή µετάφραση του ßιßλίου
οδηγιών. Ο χρήστης πρέπει να διαßάσει και να κατανοήσει πλήρως τις οδηγίες χρήσης και να
λάßει όλα τα απαραίτητα µέτρα πριν θέσει σε λειτουργία την συσκευή.
”Υποδείξεις ασφάλειας για αντλίες κενού”
HR
Pažnja:ove upute ne postoje na svim jezicima Europske Unije. Korisnik nemora raditi sa apara-
tom ako ne razumije ove upute.U tom slucaju tehnicki ispravni prijevod cijelih uputstava mora biti
na raspolaganju. Uputstva moraju biti cijela procitana i razumljiva prije rada sa aparatom i sve
zahtijevane mjere moraju biti primjenjene.
”Sigurnosne napomene za vakuumske uređaje”
HU
Figyelem! Ez a kezelési utasítás nem áll rendelkezésre az EU összes nyelvén. Ha a felhasználó
nem érti jelen használati utasítás szövegét, nem üzemeltetheti a készüléket. Ez esetben a teljes
gépkönyv fordításáról gondoskodni kell. Üzembe helyezés előtt a kezelőnek végig kell olvasnia,
meg kell értenie azt, továbbá az üzemeltetéshez szükséges összes mérést el kell végeznie.
”A vákuum-készülékekkel kapcsolatos biztonsági tudnivalók”
IT
Attenzione: Questo manuale non è disponibile in tutte le lingue della Comunità Europea (CE).
L‘utilizzatore non deve operare con lo strumento se non comprende questo manuale. In questo
caso deve essere resa disponibile una traduzione tecnicamente corretta del manuale completo.
Il manuale deve essere completamente letto e compreso prima di operare con lo strumento e
devono essere applicati tutti gli accorgimenti richiesti.
”Istruzioni di sicurezza per apparecchi a vuoto”

page 5 of 88
JP
注意：この取扱説明書はすべての言語で利用可能ではありません。 もしこの取扱説明書を理解
できないならば、ユーザーは装置を操作してはなりません。 この場合、技術的に正しい翻訳が
なされた完全なマニュアルを用意しなければなりません。 装置を作動する前にマニュアルを完
全に読み、そして理解されなくてはなりません。そして、すべての要求される対策を講じなけ
ればなりません。
真空装置を安全に取り扱うために
KR
주의 : 이 매뉴얼은 모든 언어로 번역되지는 않습니다. 만약 이 매뉴얼의 내용을 충분히 인지하지
못했다면 기기를 작동하지 마십시오. 매뉴얼의 내용을 기술적으로 정확하게 번역한 경우에 이용
하십시오. 기기를 사용하기 전에 이 매뉴얼을 충분히 읽고 이해하고 모든 요구되는 사항들을 적용
해야 합니다.
진공 장비에 대한 안전 정보
LT
Dėmesio: šis vadovas nėra pateikiamas visomis ES kalbomis. Naudotojui draudžiama eksploa-
tuoti įtaisą, jeigu jis nesupranta šio vadovo. Tokiu atveju reikia turėti viso vadovo techniškai taisy-
klingą vertimą. Vadovą būtina visą perskaityti ir suprasti pateikiamas instrukcijas prieš pradedant
eksploatuoti įtaisą, bei imtis visų reikiamų priemonių.
”Vakuuminės įrangos saugos informacija”
LV
Uzmanību: Lietotāja instrukcija nav pieejama visās ES valodās. Lietotājs nedrīkst lietot iekārtu,
ja viņš nesaprot lietotāja instrukcijā rakstīto. Šādā gadījumā, ir nepieciešams nodrošināt tehniski
pareizu visas lietotāja instrukcijas tulkojumu. Pirms sākt lietot iekārtu, un, lai izpildītu visas nepie-
ciešamās prasības, iekārtas lietotāja instrukcija ir pilnībā jāizlasa un jāsaprot.
”Vakuuma iekārtu drošības noteikumi”
NL
Attentie: Deze gebruiksaanwijzing is niet in alle talen van de EU verkrijgbaar. De gebruiker moet
niet met dit apparaat gaan werken als voor hem/haar de gebruiksaanwijzing niet voldoende dui-
delijk is. Bij gebruik van deze apparatuur is het noodzakelijk een technisch correcte vertaling van
de complete gebruiksaanwijzing te hebben. Voor het in gebruik nemen van het apparaat moet
de gebruiksaanwijzing volledig gelezen en duidelijk zijn en dienen alle benodigde maatregelen te
zijn genomen.
”Veiligheidsvoorschriften voor vacuümapparaten”
PL
Uwaga!! Ta instrukcja nie jest dostępna we wszystkich językach Unii Europejskiej. Użytkownik nie
może rozpocząć pracy z urządzeniem dopóki nie przeczytał instrukcji i nie jest pewien wszystkich
informacji w niej zawartych. Instrukcja musi byc w całości przeczytana i zrozumiana przed pod-
jęciem pracy z urządzeniem oraz należy podjąć wszystkie niezbędne kroki związane z prawidło-
wym uzytkowaniem.
”Wskazówki bezpieczeństwa do urządzeń próżniowych”
PT
Atenção: Este manual não está disponível em todas as línguas da UE. O usuário não deve utili-
zar o dispositivo, se não entender este manual. Neste caso, uma tradução tecnicamente correta
do manual completo tem de estar disponível. O manual deve ser lido e entendido completamente
antes da utilização do equipamento e todas as medidas necessárias devem ser aplicadas.
”Informação de Segurança para Equipamento que funciona a Vácuo”

page 6 of 88
RO
Atentie: Acest manual nu este disponibil in toate limbile EU. Utilizatorul nu trebuie sa lucreze cu
aparatul daca daca nu intelege manualul. Astfel, va 󰘰 disponibile o traducere corecta si completa
a manualului. Manualul trebuie citit si inteles in intregime inainte de a lucra cu aparatul si a luat
toate masurile care se impun.
”Instrucţiuni de siguranţă pentru aparatele de vidare”
RU
Внимание: Эта инструкция по эксплуатации не имеется на всех языках. Потребителю не
дозволенно эксплуатировать данный прибор, если он не понимает эту инструкцию. В этом
случае нужен технически правильный перевод полной инструкции. Прежде чем использо-
вать этот прибор,
необходимо полностью прочитать и понять эту инструкцию и принять все необходимые
меры.
”Указания по технике безопасности при работе с вакуумными устройствами”
SE
Varning: Denna instruktion är inte tillgänglig på alla språk inom EU. Användaren får inte starta
utrustningen om hon/han inte förstår denna instruktion. Om så är fallet måste en tekniskt korrekt
instruktion göras tillgänglig. Instruktionen måste läsas och förstås helt före utrustningen tas i drift
och nödvändiga åtgärder göres.
”Säkerhetsinformation för vakuumutrustning”
SI
Pozor: Ta navodila niso na voljo v vseh jezikih EU. Uporabnik ne sme upravljati z napravo, če
ne razume teh navodil. V primeru nerazumljivosti mora biti na voljo tehnično pravilen prevod.
Navodila se morajo prebrati in razumeti pred uporaba naprave, opravljene pa moraja biti tudi vse
potrebne meritve.
”Varnostni nasveti za vakuumske naprave”
SK
Upozornenie: Tento manuál nie je k dispozícii vo všetkých jazykoch EÚ. Užívateľ nesmie obslu-
hovať zariadenie, pokiaľ nerozumie tomuto manuálu. V takomto prípade musí byť k dispozícii
technicky správny preklad celého manuálu. Pred obsluhou zariadenia je potrebné si prečítať celý
manuál a porozumieť mu, a musia byť prijaté všetky opatrenia.
”Bezpečnostné pokyny pre vákuové zariadenia”
TR
Dikkat : Bu kullanım kitabı, tüm dillerde mevcut değildir. Kullanıcı, bu kullanım kitabını anlayama-
dıysa cihazı çalıştırmamalıdır. Bu durumda, komple kullanım kitabının, teknik olarak düzgün çe-
virisinin bulunması gerekir. Cihazın çalıştırılmasından önce kullanım kitabının komple okunması
ve anlaşılması ve tüm gerekli ölçümlerin uygulanması gerekir.
”Vakumlu cihazlar için güvenlik uyarıları”

page 7 of 88
Contents
Safety information!............................................................. 9
Important information! ......................................................................... 9
General information............................................................................11
Intended use.......................................................................................11
Improper use ..................................................................................... 12
Setting up and installing the equipment ............................................ 13
Ambient conditions............................................................................ 15
Operating conditions ......................................................................... 16
Safety during operation ..................................................................... 18
Maintenance and repair..................................................................... 20
Additional safety information for ME 4R NT ..................................... 22
` Important information: Equipment marking (ATEX)................... 23
Technical data................................................................... 25
General technical data valid for all pumps ........................................ 25
Gas inlet temperatures..................................................................... 25
Wetted parts..................................................................................... 31
Abbreviations.................................................................................... 32
Pump parts....................................................................................... 33
Use and operation ............................................................ 40
Installation ........................................................................................ 40
Vacuum connection (inlet)................................................................ 40
Connecting the outlet ....................................................................... 42
Notes prior to the use of the manometers (ME 4R NT).................... 44
Electrical connection ........................................................................ 45
During operation............................................................................... 46
Shutdown & storage......................................................................... 49
Accessories ...................................................................... 51
Troubleshooting ............................................................... 52
Replacing diaphragms and valves.................................. 54
Checking diaphragms and valves (except MZ 2D NT)..................... 57
Replacing the valves and assembling the pump heads ................... 65
Assembling the connecting hose ..................................................... 68
Checking diaphragms and valves (MZ 2D NT) ................................ 70
Replacing the valves and assembling the pump heads ................... 74
Assembling the connecting hose (MZ 2D NT).................................. 77

page 8 of 88
Replacing the fuse............................................................................ 78
Repair -Maintenance -Return -Calibration ................. 80
Warranty ............................................................................ 81
Health and safety clearance form ................................... 82
EC Declaration of Conformity of the Machinery ............... 83
China RoHS....................................................................... 86

page 9 of 88
Safety information!
Important information!
+ Keep this manual complete and accessible to per-
sonnel at all times!
+ Read this manual carefully before installing or op-
erating the equipment. Observe the instructions
contained in this manual.
+ Do not modify the equipment without authoriza-
tion.
This manual is an integral part of the equipment de-
scribed therein. It describes the safe and proper use
of the vacuum pump.
Make operating personnel aware of dangers arising
from the pump and the pumped substances.
VACUUBRAND disclaims any liability for inappropri-
ate use of these pumps and for damage from failure
to follow instructions contained in this manual.
This manual is only to be used and distributed in its com-
plete and original form. It is strictly the users’ responsibility
to check carefully the validity of this manual with respect
to his product.
Manual-no.: 20901070
The following signal word panels and safety
symbols are used throughout this manual:
This is the safety alert symbol. It is used to alert you to po-
tential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury and death.
NOTICE

page 10 of 88
➨DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
+WARNING indicates a hazardous situation which, if
not avoided, could result in death or serious injury.
• CAUTION indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to
personal injury.
Caution! Hot surface!
Disconnect equipment from AC power.
Electronic components must not be disposed of in the
domestic waste at the end of their service life. Used
electronic devices contain harmful substances that can
cause damage to the environment or human health.
End users are legally obliged to take used electric and
electronic devices to a licensed collection point.
NOTICE
Formatting used in this manual:
Note: The signal word panels in all sections of this manual always refer
to all paragraphs of the same format (➨/ +/ • / plain text) following each
signal word panel.
The document ”Safety information for vacuum equipment” is
part of this manual! Read the ”Safety information for vacuum
equipment” and observe the instructions contained therein!

page 11 of 88
General information
Remove all packing material from the packing box. Re-
move the product from its packing-box and retain all pack-
aging until the equipment is inspected and tested. Re-
move the protective caps from the inlet and outlet ports
and retain for future use. Inspect the equipment promptly
and carefully.
If the equipment is damaged, notify the supplier and the
carrier in writing within three days. Retain all packing ma-
terial for inspection. State the item number of the product
together with the order number and the supplier’s invoice
number. Failure to check and give notice of damage will
void any and all warranty claims for those deciencies.
Replace the protective caps, if the equipment is not used
immediately. Store the equipment in dry and non-corrosive
conditions (see also “Technical data”, pg. 25).
+Do not use any damaged equipment.
• Use the mounted handle when moving the pump.
Intended use
The vacuum pump may only be used indoors in a dry,
non-explosive atmosphere.
An attached vapor condenser (accessory) is exclusively
intended for the condensation of vapors and for collecting
liquids.
Intended use also includes:
+Observing the information in the document Safety in-
formation for vacuum equipment.
+Observing the manual.
+Observing the manual of connected components.
+Regularly inspecting the vacuum pump according to
its operating conditions and have this carried out by
qualied personnel.
+Using only original VACUUBRAND parts and original
accessories / approved accessories or spare parts.
NOTICE

page 12 of 88
Any other use is considered improper use.
Improper use
Incorrect use or any application which does not corre-
spond to the technical data may result in injury or damage
to property.
Improper use includes:
+Using the product contrary to its intended use,
+ Using the product in non-commercial environments,
unless the necessary protective measures and pre-
cautions have been taken by the company,
+ Operation under inadmissible environmental and oper-
ating conditions,
+ Operation despite obvious errors or defective safety
devices,
+ Unauthorized extensions, conversions, or repairs, in
particular when these impair safety,
+ The use of unauthorized accessories or spare parts,
+ Usage despite incomplete assembly,
+ operation by insu󰀩ciently trained or qualied person-
nel,
+ Switching on/o󰀨 with tools or one’s foot,
+ Operation with sharp-edged objects,
+ Pulling plug-in connections on the cable out of the
socket,
+ Extracting or conveying solids or liquids.
+Do not use the pump or any system parts on humans
or animals.
+Ensure that the individual components are only con-
nected, combined and operated according to their de-
sign and as indicated in the instructions for use. Use
only original manufacturer’s spare parts and ac-
cessories. Otherwise the safety and performance of
the equipment, as well as the electromagnetic compat-
ibility of the equipment might be reduced.
The CE mark or the cTÜVus mark may be voided if not

page 13 of 88
using original manufacturer’s spare parts.
+Comply with all notes on correct vacuum and electri-
cal connections; see section “Use and operation”, pg.
40.
+Do not use the pump to generate pressure.
+ The pumps are designed for ambient temperatures
during operation between +50°F and +104°F (+10°C
and +40°C). Periodically check maximum tempera-
tures if installing the pump in a cabinet or a housing.
Make sure ventilation is adequate to maintain recom-
mended operating temperature. Install an external au-
tomatic ventilation system if necessary. If pumping hot
process gases, make sure that the maximum permitted
gas inlet temperature is not exceeded. The maximum
permitted gas inlet temperature depends on several
parameters like inlet pressure and ambient tempera-
ture (see “Technical data”, pg. 25).
+ Particles and dust must not enter the pump.
+ Do not pump liquids.
• Ensure that the pump is chemically resistant to the
pumped substances prior to operation.
Use the equipment only as intended, that is, for genera-
tion of vacuum in vessels designed for that purpose. Any
other use will automatically invalidate all warranty and li-
ability claims. Remain aware of safety and risks.
Setting up and installing the equipment
➨Equipment must be connected only to a suitable elec-
trical supply and a suitable ground point. As such,
the plug must be plugged into an outlet that is properly
grounded. Failure to connect the motor to ground may
result in deadly electrical shock.
The supply cable may be tted with a molded Europe-
an IEC plug or a plug suitable for your local electrical
NOTICE

page 14 of 88
supply. The cable contains wires color coded as fol-
lows: green or green and yellow: ground; blue or white:
neutral; brown or black: hot.
+Due to the high compression ratio, the pump may gen-
erate overpressure at the outlet. Check pressure com-
patibility with system components (e.g., exhaust pipe-
line or exhaust valve) at the outlet.
+Do not permit any uncontrolled pressurizing. Make
sure that the exhaust tubing cannot become blocked
to avoid a risk of bursting!
+Keep the electrical power cord away from heated sur-
faces.
• Provide a rm, level platform for the equipment. Check
that the system which you are going to evacuate is
mechanically stable. Check that all ttings are secure.
Ensure a stable position of the pump without any me-
chanical contact other than the pump feet.
• Comply with maximum permissible pressures at in-
let and outlet and with maximum permissible pres-
sure di󰀨erences between inlet and outlet. See section
“Technical data”, pg. 25. Do not operate the pump
with overpressure at the inlet.
• Avoid overpressure of more than 17.5 psi absolute (1.2
bar absolute) in the event that inert gas is connected to
the pump, or to a venting valve.
• Note: Flexible elements will shrink when evacuated.
• Connect hoses gas tight at inlet and outlet of the pump
and secure against loosening, for example, with a hose
clamp.
• Ensure that no foreign objects can be drawn into the
pump.
• Check the power source and the pump’s rating plate
to be sure that the power source and the equipment
match in voltage, phase, and frequency.
• On pumps with a dual-voltage motor, check that the

page 15 of 88
voltage selection switch is set correctly. Do not change
the setting of the voltage selection switch while the
pump is connected to AC power. Unplug the pump be-
fore setting the voltage selection switch. Note: If the
pump is switched on with wrong voltage selection, the
motor may be damaged!
Make sure ventilation is adequate to maintain recommend-
ed operating temperature. Keep a minimum distance of
2 in (5 cm) between the cooling fan and surrounding items
(e.g., housing, walls, etc.), or else install an external au-
tomatic ventilation system. Check fan regularly for dust/
dirt. Clean fan guard grill if necessary to avoid a reduction
of ventilation.
The mains plug is a disconnecting device to separate the
pump from the supply voltage. Ensure that the mains plug
is easily accessible at all times to allow the separation of
the device from the power supply.
Use only hoses at the inlet and outlet of the pump with
an inner diameter at least as large as the diameter of the
pump’s tubing (to avoid overpressure at the outlet, and
reduction of pumping speed at the inlet).
Allow the equipment to equilibrate to ambient temperature
if you bring it from cold environment into a room prior to
operation. Notice if there is water condensation on cold
surfaces.
Comply with all applicable and relevant safety require-
ments (regulations and guidelines). Implement the re-
quired actions and adopt suitable safety measures.
Ambient conditions
➨Do not reach for this product if it has fallen into liquid.
There is a risk of deadly electrical shock. Unplug the
system immediately.
NOTICE

page 16 of 88
+Do not use this product in an area where it can fall or
be pulled into water or other liquids.
• This product may only be used indoors in a non-explo-
sive atmosphere, and in a dry environment.
Adopt suitable measures in case of di󰀨erences from
recommended conditions, e.g., installation in higher
altitudes (risk of insu󰀩cient cooling), conductive pollu-
tion or external condensation on the pump.
• Do not operate this product near ames.
To the best of our knowledge the equipment is in com-
pliance with the requirements of the applicable EC-direc-
tives and harmonized standards (see ”Declaration of Con-
formity”) with regard to design, type and model. Directive
EN 61010-1 gives in detail the conditions under which the
equipment can be operated safely (see also IP degree of
protection, “Technical data”, pg. 25).
Operating conditions
➨These pumps are not approved for operation in po-
tentially explosive atmospheres. Do not operate the
pumps in potentially explosive atmospheres.
➨Pumps without the ”`” mark on the rating plate are
not approved for the pumping of potentially explo-
sive atmospheres. Do not pump potentially explo-
sive atmospheres with those pumps.
➨Pumps bearing the ”`” mark on their rating plates
are approved for the pumping of potentially explo-
sive atmospheres according to their ATEX classica-
tion imprinted on their rating plate, but they are not
approved for operation in potentially explosive at-
mospheres (see section “`Important information:
Equipment marking (ATEX)”, pg. 23).
➨The pumps are not suitable to pump any of the sub-
stances listed below.
Do not pump:
NOTICE

page 17 of 88
- unstable substances
- substances which react explosively under impact
(mechanical stress) without air
- substances which react explosively when being ex-
posed to elevated temperatures without air,
- substances subject to auto-ignition,
- substances which are inammable without air
- explosive substances.
➨ The pumps are not approved for operation below
ground. Do not operate the pump below ground.
• Do not pump substances which may form depos-
its inside the pump. The pumps are not suitable for
pumping substances which may form deposits inside
the pump. Deposits and condensate in the pump may
lead to increased temperatures even to the point of
exceeding the maximum permitted temperatures.
• Check the inlet and outlet of the pump, if there is a
danger of forming deposits inside the pump, e.g., in
the pump chambers (the pump chamber is the part
between diaphragm and head cover. See section “Re-
placing diaphragms and valves”, pg. 54). Inspect the
pump chambers regularly and clean if necessary.
• Consider interactions and chemical reactions of
the pumped media. Ensure that the materials of the
pump’s wetted parts are compatible with the pumped
substances, see section “Technical data”, pg. 25.
When changing the substances pumped, we recom-
mend purging the pump with air or inert gas prior to
changing the pumped media. Purging the pump will
pump out residues and it will reduce the possibility of
reactions of the pumped substances with each other
and with the pump’s materials.

page 18 of 88
Safety during operation
➨Adopt suitable measures to prevent the release of dan-
gerous, toxic, explosive, corrosive, noxious or pollut-
ing uids, vapors and gases. To prevent any emission
of such substances from the pump outlet, install an
appropriate collecting and disposal system and take
protective action for pump and environment.
➨You must take suitable precautions to prevent any for-
mation of explosive mixtures in the pump chamber or
at the outlet of the pump. In case, e.g., of a diaphragm
failure, mechanically generated sparks, hot surfaces
or static electricity may ignite these mixtures. Use inert
gas for venting, if necessary.
➨Drain appropriately or otherwise remove any poten-
tially explosive mixtures at the outlet of the pump, or
dilute them to non-explosive concentrations.
➨ Never operate this pump if it has a damaged cord or plug.
+If the pump is not working properly, has been dropped
or has fallen into water, contact your pump service pro-
vider.
+Prevent any part of the human body from coming into
contact with vacuum.
+ If there is an exhaust isolation valve, make sure that you
cannot operate the equipment with the valve closed to
avoid a risk of bursting!
+Always provide a free and pressureless exhaust outlet
to avoid damage to pump valves and risk of bursting.
+Comply with applicable regulations when disposing of
chemicals. Take into consideration that chemicals may
be contaminated. Take adequate precautions to pro-
tect people from the e󰀨ects of dangerous substances
(chemicals, thermal decomposition products of uoro-
elastomers). Use appropriate protective clothing and
safety goggles.

page 19 of 88
+Interruption of the pump (e.g., due to power failure),
failure of connected components or of parts of the sup-
ply, or change in parameters must not be allowed to
lead to dangerous conditions. In case of a diaphragm
failure or in case of a leak in the manifold, pumped
substances might be released into the environment or
into the pump housing or motor.
Comply with all notes regarding proper use of the
pumps, as well as operation and maintenance guid-
ance.
+The residual leak rate of the equipment might render
possible an exchange of gas, albeit extremely slight,
between the environment and the vacuum system.
Adopt suitable measures to prevent contamination of
the pumped substances or the environment.
• Ensure that no parts of your clothing, hair or ngers
can be caught or drawn in at the inlet of the pump.
Never insert ngers or drop any other object into the
inlet or outlet.
• Pay attention to the safety symbol ”hot surfaces” on
the equipment. Hot parts may cause burns if touched.
Adopt suitable measures to prevent any danger aris-
ing from hot surfaces or electric sparks. Ensure that
hot surfaces of the pump do not cause burns. Provide
a suitable contact guard if necessary.
Prevent the backpressure of gases and the backow of
condensates at the outlet.
Provide appropriate protective measures to allow for the
possibility of failure and malfunction. The protective mea-
sures must also allow for the requirements of the respec-
tive application.
In case of overload, the motor is shut down by a self-hold
thermal cutout in the winding.
Note: Only manual reset is possible. Switch o󰀨 the pump
NOTICE

page 20 of 88
and disconnect from the power source. Identify and elimi-
nate the cause of failure. Wait approx. ve minutes before
restarting the pump.
• Note: In case of supply voltage below 100V, the lock
of the cutout might be impaired and the pump may
restart on its own after su󰀩cient cooling down. Take
appropriate precautions, if an automatic restart of the
pump may lead to a dangerous situation (e.g., switch
o󰀨 the pump and disconnect from the power source).
Maintenance and repair
In order to comply with laws (occupational, health and
safety regulations, safety at work law and regulations for
environmental protection) vacuum pumps, components
and measuring instruments can only be returned when
certain procedures (see section “Repair - Maintenance -
Return - Calibration”, pg. 80) are followed.
Take advantage of our service seminars, which put special
focus on the maintenance and repair of vacuum pumps.
For details and for the online ”Instructions for repair” man-
ual see www.vacuubrand.com.
In normal use, the lifetime of the diaphragms and valves
is typically 15,000 operating hours. Bearings have a typi-
cal durability of 40000 h. Motor capacitors have a typi-
cal durability in the range of 10000 to 40000 h depending
strongly on operation conditions including ambient tem-
perature, humidity or load.
➨Ensure that the pump cannot be operated acciden-
tally. Never operate the pump if covers or other
parts of the pump are disassembled.
➨Switch o󰀨 the pump. Disconnect the electrical
power cord and wait ve seconds before starting
maintenance to allow the capacitors to discharge.
➨Note: The pump may be contaminated with process
NOTICE