vacuumbrand PC 8 / MD 12C User manual

page 1 of 52
Instructions for use
Technology for Vacuum Systems
Chemistry pumping units
PC 8 / RC 6
PC 8 / MD 12C / MV 10C

page 2 of 52
Dear customer,
Your VACUUBRAND pumping units 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 pumping unit.
VACUUBRAND pumps combine our many years of experience in design,
construction and practical operation, with the latest developments in ma-
terial and manufacturing technology.
Our quality maxim is the ”zero defect” principle:
Every vacuum pump, before leaving our factory, is tested intensively, in-, before leaving our factory, is tested intensively, in-
cluding an endurance run (14 hours for diaphragm pumps, 60 hours in
case of the HYBRID-pump RC 6). Any faults, even those which occur
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 effective and trouble-free
tool to assist you in that work.
Yours
VACUUBRAND GMBH + CO KG
After sales service:
Contact your local dealer or call [phone].
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 52
DE
Achtung: Die vorliegende Betriebsanleitung ist nicht in allen EU-Sprachen verfügbar.
Der Anwender darf die beschriebenen Geräte nur dann in Betrieb nehmen, wenn er
die vorliegende Anleitung versteht oder eine fachlich korrekte Übersetzung der voll-
ständigen Anleitung vorliegen hat. Die Betriebsanleitung muss vor Inbetriebnahme
der Geräte vollständig gelesen und verstanden werden, und alle geforderten Maß-
nahmen 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 before 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 Européenne. 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 dispositif ne doit pas être mis en marche
avant que le mode d’emploi ait été lu et compris complètement 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. Потреби-
телят 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 потребите-
лят 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 tako-
vém případě je nutno zajistit technicky korektní překlad manuálu do češtiny. Návod
musí být uživatelem prostudován a uživatel mu musí plně porozumět před tím než
začne přístroj používat. Uživatel musí dodržet všechna příslušná a požadovaná
opatření. ”Bezpečnostní upozornění pro vakuové přístroje”.

page 4 of 52
DA
Bemærk: Denne manual foreligger ikke på alle EU sprog. Brugeren må ikke be-
tjene 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 nødvendige forholdsregler skal tages.
»Sikkerhedsregler for vakuumudstyr«
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 kasutusjuhendi tehniliselt korrektne tõlge. Enne seadme kasutamist tu-
leb 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 manejar 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 completamente 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 käyt-
tää laitetta, jos hän ei ymmärrä tätä ohjekirjaa. Tässä tapauksessa on saatavilla ol-
tava 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 Ευρω-
παϊκής 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 διαßά-
σει 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 ra-
diti sa aparatom 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”

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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�készü� ”A vákuum�készü�”A vákuum�készü-
lékekkel kapcsolatos biztonsági tudnivalók”
IT
Attenzione: Questo manuale non è disponibile in tutte le lingue della Comunità Eu-
ropea (CE). L‘utilizzatore non deve operare con lo strumento se non comprende
questo manuale. In questo caso deve essere resa disponibile una traduzione tec-
nicamente 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”
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 충분
히 인지하지 못했다면 기기를 작동하지 마십시오. 매뉴얼의 내용을 기술적으로 정확
하게 번역한 경우에 이용하십시오. 기기를 사용하기 전에 이 매뉴얼을 충분히 읽고
이해하고 모든 요구되는 사항들을 적용해야 합니다.
진공 장비에 대한 안전 정보
LT
Dėmesio: šis vadovas nėra pateikiamas visomis ES kalbomis. Naudotojui drau-
džiama eksploatuoti įtaisą, jeigu jis nesupranta šio vadovo. Tokiu atveju reikia turėti
viso vadovo techniškai taisyklingą 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 ne-
pieciešams nodrošināt tehniski pareizu visas lietotāja instrukcijas tulkojumu. Pirms
sākt lietot iekārtu, un, lai izpildītu visas nepieciešamās prasības, iekārtas lietotāja
instrukcija ir pilnībā jāizlasa un jāsaprot. ”Vakuuma iekārtu drošības noteikumi”

page 6 of 52
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 gebruiks-
aanwijzing niet voldoende duidelijk is. Bij gebruik van deze apparatuur is het nood-
zakelijk 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 ge-
nomen. ”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 instruk-
cji i nie jest pewien wszystkich informacji w niej zawartych. Instrukcja musi byc w
całości przeczytana i zrozumiana przed podjęciem pracy z urządzeniem oraz nale-
ży podjąć wszystkie niezbędne kroki związane z prawidłowym uzytkowaniem.
”Wskazówki bezpieczeństwa do urządzeń próżniowych”
PT
Atenção: Este manual não está disponível em todas as línguas da UE. O usuário
não deve utilizar o dispositivo, se não entender este manual. Neste caso, uma tra-
dução tecnicamente correta do manual completo tem de estar disponível. O manu-
al 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”
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 intre-
gime 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. Потре-
бителю не дозволенно эксплуатировать данный прибор, если он не понимает
эту инструкцию. В этом случае нужен технически правильный перевод полной
инструкции. Прежде чем использовать этот прибор,
необходимо полностью прочитать и понять эту инструкцию и принять все не-
обходимые меры. ”Указания по технике безопасности при работе с ваку-
умными устройствами”

page 7 of 52
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 obsluhovať zariadenie, pokiaľ nerozumie tomuto manuálu. V takomto prípa-
de 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 kita-
bını anlayamadıysa cihazı çalıştırmamalıdır. Bu durumda, komple kullanım kitabı-
nın, teknik olarak düzgün çevirisinin bulunması gerekir. Cihazın çalıştırılmasından
önce kullanım kitabının komple okunması ve anlaşılması ve tüm gerekli ölçümlerin
uygulanması gerekir. ”Vakumlu cihazlar için güvenlik uyarıları”

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Contents
Safety information!............................................................. 9
Important information! ......................................................................... 9
General information............................................................................11
Intended use.......................................................................................11
Setting up and installing the equipment ............................................ 12
Ambient conditions............................................................................ 15
Operating conditions ......................................................................... 15
Safety during operation ..................................................................... 17
Maintenance and repair..................................................................... 19
` Important information: Equipment marking (ATEX)................... 22
Technical data................................................................... 24
Gas inlet temperatures..................................................................... 24
Wetted parts ..................................................................................... 25
Abbreviations.................................................................................... 25
Pump parts....................................................................................... 25
Use and operation ............................................................ 27
Installing a pump in a vacuum system .............................................. 27
During operation................................................................................ 30
Important notes regarding the use of gas ballast .............................. 31
Important notes concerning the operation of the
exhaust waste vapor condenser........................................................ 33
Shutdown & storage.......................................................................... 35
Installation of upgrade kit PC 8....................................... 37
Installation with chemistry diaphragm pump MD 12C or MV 10C 38
Installation with Chemistry-HYBRID pump RC 6............................... 39
Accessories ...................................................................... 40
Spare parts and troubleshooting.................................... 41
Spare parts....................................................................................... 41
Troubleshooting................................................................................ 41
Repair - Maintenance - Return - Calibration................... 42
Warranty ............................................................................ 44
Health and safety clearance form ................................... 45
EC Declaration of Conformity of the Machinery ............... 46
China RoHS....................................................................... 48

page 9 of 52
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 authorization.
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.: 20901388
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 52
➨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 per-
sonal injury.
Caution! Hot surface!
Disconnect equipment from AC power.
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 52
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. 24).
+Do not use any damaged equipment.
The manuals of the vacuum pumps MD 12C, MV 10C,
or RC 6 are part of this manual of the pumping unit
PC 8.
• Use the mounted handles when moving the pump.
Intended use
+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
accessories. Otherwise the safety and performance of
the equipment, as well as the electromagnetic compat-
ibility of the equipment might be reduced.
The CE mark may be voided if not using original manu-
NOTICE

page 12 of 52
facturer’s spare parts.
+Comply with all notes on correct vacuum and electrical
connections; see section „Use and operation“, pg. 27.
+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 temperatures
if installing the pump in a cabinet or a housing. Make
sure ventilation is adequate to maintain recommended
operating temperature. Install an external automatic
ventilation system if necessary. If pumping hot process
gases, make sure that the maximum permitted gas in-
let temperature is not exceeded. The maximum permit-
ted gas inlet temperature depends on several param-
eters like inlet pressure and ambient temperature (see
„Technical data“, pg. 24).
+ 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 Euro-
pean IEC plug or a plug suitable for your local electrical
NOTICE

page 13 of 52
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 pipeline cannot become blocked.
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!
+Check the overpressure safety relief device at the ex-
haust waste vapor condenser at appropriate intervals.
+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 differences between inlet and outlet. See section
„Technical data“, pg. 24. 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 gas or inert gas is connect-
ed to the pump, to the gas ballast or to a venting valve.
• Note: Flexible elements will shrink when evacuated.
• Connect hoses gas tight at inlet and outlet of the pump.
• Ensure that no foreign objects can be drawn into the
pump.

page 14 of 52
• 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.
• Ensure that the coolant outlet pipe is always free and
that it cannot get blocked. If installing an optional cool-
ant valve, it must always be in the supply line of the
exhaust waste vapor condenser.
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 auto-
matic ventilation system. Check fan regularly for dust/dirt.
Clean if necessary to avoid a reduction of ventilation.
The tubing between vacuum pump and exhaust waste
vapor condenser must be descending from the pump to
avoid backow of condensate towards the pump.
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.
Secure coolant hoses at the hose nozzles (e.g., with hose
clamp) to prevent their accidental slipping.
Comply with all applicable and relevant safety require-
ments (regulations and guidelines). Implement the re-
quired actions and adopt suitable safety measures.
NOTICE

page 15 of 52
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.
+Do not use this product in an area where it can fall or
be pulled into water or other liquids.
• Adopt suitable measures in case of differences from
recommended conditions, e.g., using the equipment
outdoors, installation in higher altitudes, conductive
pollution 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. 24).
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 ex-
plosive atmospheres according to their ATEX clas-
sication imprinted on their rating plate, but they are
not approved for operation in potentially explosive
NOTICE

page 16 of 52
atmospheres (see section „`Important information:
Equipment marking (ATEX)“, pg. 22).
➨The pumps are not suitable to pump any of the sub-
stances listed below.
Do not pump:
- 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 deposits in-
side 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 in-
creased temperatures even to the point of exceeding
the maximum permitted temperatures.
• Check the inlet and outlet of the pump and its oil con-
dition (RC 6), 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 cov-
er) or in the pump unit of the rotary vane pump (RC 6).
Inspect the pump chambers of the diaphragm pump
(MD 12C / MV 10C) or the pump unit of the rotary vane
pump (RC 6) 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. 24.
When changing the substances pumped, we recom-

page 17 of 52
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.
Safety during operation
➨Adopt suitable measures to prevent the release of dan-
gerous, toxic, explosive, corrosive, noxious or polluting
uids, vapors and gases. To prevent any emission of
such substances from the pump outlet, install an ap-
propriate collecting and disposal system and take pro-
tective action for pump and environment.
➨You must take suitable precautions to prevent any for-
mation of explosive mixtures in the oil reservoir (PC 8
with RC 6), in the pump chamber, or at the outlet of the
pump. In case, e.g., of a diaphragm failure, mechani-
cally generated sparks, hot surfaces or static electricity
may ignite these mixtures. Use inert gas for gas ballast
or venting, if necessary.
➨Drain appropriately or otherwise remove any potential-
ly 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.
+ Make sure that the exhaust pipeline cannot become
blocked. Always provide a free and pressureless ex-
haust outlet.

page 18 of 52
+Check the overpressure safety relief device at the ex-
haust waste vapor condenser at appropriate intervals.
+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 effects of dangerous substances
(chemicals, thermal decomposition products of uoro-
elastomers). Use appropriate protective clothing and
safety goggles.
+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 or at the shaft
seal of the rotary vane pump (RC 6), pumped substanc-
es 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. Nev-
er insert ngers or drop any other object into the inlet or
outlet.
• Pumping at high inlet pressure may lead to overpres-
sure at the gas ballast valve. Pumped gases or con-
densate might be expelled if the valve is open. If an
inert gas supply is connected to the gas ballast, ensure
that its inlet pipeline is not contaminated.

page 19 of 52
• 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 arising
from hot surfaces or electric sparks. Ensure that hot
surfaces of the pump do not cause burns. Provide a
suitable contact guard if necessary.
• Ensure that the coolant outlet pipe at the waste vapor
condenser is always free and that it cannot get blocked.
Prevent the backpressure of gases and the backow of
condensates at the outlet.
Check the liquid level in the collecting ask regularly and
drain condensate in time to prevent overlling.
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 off the pump
and disconnect from the power source. Identify and elimi-
nate the cause of failure. Allow the pump to cool down suf-
ciently before restart. Wait approx. ve minutes before
restarting the pump.
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. 42) are followed.
NOTICE
NOTICE

page 20 of 52
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 off the pump. Disconnect the electrical pow-
er cord and wait ve seconds before starting mainte-
nance to allow the capacitors to discharge.
➨Note: The pump may be contaminated with process
chemicals, which have been pumped during operation.
Ensure that the pump is completely decontaminated
before maintenance commences. Avoid the release of
pollutants.
+ Take adequate precautions to protect people from the
effects of dangerous substances if contamination has
occurred. Use appropriate protective clothing, safety
goggles and protective gloves.
+ Wear parts have to be replaced regularly.
+ Never operate a defective or damaged pump.
+Check every motor capacitor regularly by measuring
its capacity and estimating its time in operation. Re-
place old capacitors early enough to prevent a failure in
operation. If an old motor capacitor fails, the capacitor
may get hot. It may even melt or emit a ame, which