Varian DS 42 User manual

vacuum technologies
DS 42
Dual Stage Rotary
Vane Pump
Model 949-9308
Model 949-9309
87-900-977-01(C)
JULY 2009
(I) MANUALE DI ISTRUZIONI
(D) BEDIENUNGSHANDBUCH
(F) NOTICE DE MODE D’EMPLOI
(GB) INSTRUCTION MANUAL
NOTICE: This document contains references to Varian.
Please note that Varian, Inc. is now part of Agilent
Technologies. For more information, go to
www.agilent.com/chem.

DS 42
Dual Stage Rotary Vane Pump

ISTRUZIONI PER L’USO ....................................................................................................1
GEBRAUCHSANLEITUNG .................................................................................................3
MODE D’EMPLOI................................................................................................................5
INSTRUCTIONS FOR USE.................................................................................................7
TECHNICAL INFORMATION ..............................................................................................9
SECTION I .....................................................................................................................................9
TECHNICAL DESCRIPTION.........................................................................................................9
LUBRICATION...............................................................................................................................9
VACUUM SEALS.........................................................................................................................10
GAS BALLAST VALVE................................................................................................................10
TECHNICAL DATA......................................................................................................................10
SAFETY PRECAUTIONS............................................................................................................11
TRANSPORT AND INSTALLATION............................................................................................11
PRELIMINARY OPERATIONS....................................................................................................11
SECTION II ..................................................................................................................................12
ELECTRICAL MOTOR.................................................................................................................12
CONNECTIONS TO THE INLET AND EXHAUST FLANGES ....................................................13
STARTING AND RUNNING THE PUMP.....................................................................................13
STOPPING THE PUMP...............................................................................................................14
SAFETY RULES..........................................................................................................................14
WARNING NOTES ..................................................................................................14
CAUTION NOTES ....................................................................................................15
MAINTENANCE ACTIONS..........................................................................................................15
LUBRICANTS ..............................................................................................................................15
SCHEDULED MAINTENANCE....................................................................................................16

ISTRUZIONI PER L’USO
1/16 87-900-977-01(C)
INFORMAZIONI GENERALI
Questa apparecchiatura è destinata ad uso professionale. L'uti-
lizzatore deve leggere attentamente il presente manuale di i-
struzioni ed ogni altra informazione addizionale fornita dalla
Varian prima dell'utilizzo dell'apparecchiatura. La Varian si ritie-
ne sollevata da eventuali responsabilità dovute all'inosservanza
totale o parziale delle istruzioni, ad uso improprio da parte di
personale non addestrato, ad interventi non autorizzati o ad uso
contrario alle normative nazionali specifiche.
Le pompe DS42 sono pompe rotative bistadio a palette, a tenu-
ta in bagno d'olio, azionate da motore elettrico mono fase.
Queste pompe da alto vuoto sono adatte al pompaggio di gas
non corrosivi.
Nei paragrafi seguenti sono riportate tutte le informazioni ne-
cessarie a garantire la sicurezza dell'operatore durante l'utilizzo
dell'apparecchiatura. Informazioni dettagliate sono fornite nel-
l'appendice “Technical information”.
Questo manuale utilizza le seguenti convenzioni:
PERICOLO!
I messaggi di pericolo attirano l'attenzione dell'operatore su una
procedura o una pratica specifica che, se non eseguita in modo
corretto, potrebbe provocare gravi lesioni personali.
ATTENZIONE!
I messaggi di attenzione sono visualizzati prima di procedure
che, se non osservate, potrebbero causare danni all'apparec-
chiatura.
NOTA
Le note contengono informazioni importanti estrapolate dal te-
sto.
IMMAGAZZINAMENTO
Durante il trasporto e l'immagazzinamento delle pompe non
devono essere superate le seguenti condizioni ambientali:
−temperatura: da -15 °C a +60 °C
−umidità relativa: 0 - 95% (non condensante)
PREPARAZIONE PER L'INSTALLAZIONE
La pompa viene fornita in un imballo protettivo speciale; se si
presentano segni di danni, che potrebbero essersi verificati du-
rante il trasporto, contattare l'ufficio vendite locale.
Il peso dell’imballo, comprensivo della pompa, è, al massimo, di
circa 13 Kg.
Durante l'operazione di disimballaggio, prestare particolare at-
tenzione a non lasciar cadere la pompa e a non sottoporla ad
urti o vibrazioni.
Non disperdere l'imballo nell'ambiente. Il materiale è comple-
tamente riciclabile e risponde alla direttiva CEE 85/399 per la
tutela dell'ambiente.
NOTA
La pompa non può essere danneggiata rimanendo semplice-
mente esposta all'atmosfera. Si consiglia comunque di mante-
nerla chiusa fino al momento dell'installazione sul sistema onde
evitare eventuale inquinamento da polvere.
INSTALLAZIONE
Non installare e/o utilizzare la pompa in ambienti esposti ad
agenti atmosferici (pioggia, gelo, neve), polveri, gas aggressivi,
in ambienti esplosivi o con elevato rischio di incendio.
Durante il funzionamento è necessario che siano rispettate le
seguenti condizioni ambientali:
−temperatura: da +12 °C a +40 °C
−umidità relativa: 0 - 95% (non condensante).
PERICOLO!
Per proteggere contro corto-circuiti o sovraccarichi, si deve in-
stallare un interruttore automatico sulla linea d’alimentazione
principale verso i dispositivi Varian, di capacità adeguata (vede-
re la tabella seguente):
P/N 110 Vac 220 Vac
949-9308 4 A
949-9309 2.5 A
ATTENZIONE!
Prima di avviare la pompa, occorre procedere al rifornimento di
olio lubrificante, poichè la pompa viene fornita scarica.
PERICOLO!
Togliere i tappi di protezione posti sulle flange di aspirazione e
scarico prima di ogni successiva operazione. L’aria contenuta
all’interno della pompa, in caso di accensione involontaria, può
proiettarli contro l’operatore.
PERICOLO!
Durante l'installazione prestare la massima attenzione che la
flangia di aspirazione sia collegata alla camera da evacuare e
che la flangia di scarico non sia tappata (vedere la figura se-
guente).
La pompa non deve essere usata come compressore.
La massima pressione interna al contenitore dell'olio non deve
superare 1,5 bar (abs).
L'inosservanza di queste precauzioni può causare danni alla
macchina ed all'operatore.

ISTRUZIONI PER L’USO
2/16 87-900-977-01(C)
ATTENZIONE!
Controllare che la tensione di alimentazione corrisponda a quel-
la indicata sul cartellino del motore.
Collegare la pompa all’alimentazione.
USO
Prima di mettere la pompa in servizio effettivo è necessario, per
il raggiungimento del vuoto limite, far marciare per circa un’ora
la pompa con zavorra aperta allo scopo di eliminare l’umidità
nell’olio.
L'accensione della pompa non richiede particolari manovre; è
sufficiente collegarla all’alimentazione elettrica.
PERICOLO!
La pompa è progettata per operare con fluidi neutri o non cor-
rosivi. È assolutamente vietato l'impiego con sostanze poten-
zialmente esplosive o infiammabili.
Lo spegnimento della pompa non richiede particolari manovre;
è sufficiente scollegarla dall’alimentazione elettrica.
MANUTENZIONE
Il personale addetto alla condotta ed alla manutenzione della
pompa deve essere ben addestrato e deve avere un'approfon-
dita conoscenza delle norme antinfortunistiche.
PERICOLO!
Le alte tensioni possono causare morte al contatto. Operare
sempre con la massima cautela e secondo le norme antinfortu-
nistiche in vigore.
PERICOLO!
Quando la macchina è alimentata prestare attenzione per la
presenza di parti in movimento e di alta tensione.
PERICOLO!
Nel caso si debba procedere ad operazioni di manutenzione
della pompa al termine di un periodo di esercizio, è necessario
lasciarla raffreddare, poichè la temperatura esterna può supe-
rare i 60 °C.
PERICOLO!
Escludere sempre l'alimentazione della pompa prima di com-
piere operazioni di manutenzione. Apporre specifici cartelli di
avvertenza: APPARECCHIATURA IN MANUTENZIONE - NON
INSERIRE L'ALIMENTAZIONE, in corrispondenza dell'interrut-
tore di alimentazione. Al termine ripristinare i dispositivi di sicu-
rezza.
PERICOLO!
Non effettuare la sostituzione dell’olio subito dopo l’arresto del-
la macchina, in quanto la temperatura dello stesso può essere
elevata.
NOTA
Prima di rispedire al costruttore una pompa per riparazioni è
indispensabile compilare e far pervenire al locale ufficio vendite
la scheda "Sicurezza e Salute" allegata al presente manuale di
istruzioni. Copia della stessa deve essere inserita nell'imballo
della pompa prima della spedizione.
Qualora una pompa dovesse essere rottamata, procedere alla
sua eliminazione nel rispetto delle normative nazionali specifi-
che.
SMALTIMENTO
Significato del logo "WEEE" presente sulle etichette
Il simbolo qui sotto riportato applicato in ottemperanza alla di-
rettiva CE denominata "WEEE".
Questo simbolo (valido solo per i paesi della Comunità Eu-
ropea) indica che il prodotto sul quale è applicato, NON deve
essere smaltito insieme ai comuni rifiuti domestici o industriali,
ma deve essere avviato ad un sistema di raccolta differenziata.
Si invita pertanto l'utente finale a contattare il fornitore del di-
spositivo, sia esso la casa madre o un rivenditore, per avviare il
processo di raccolta e smaltimento, dopo opportuna verifica dei
termini e condizioni contrattuali di vendita.
FLANGIA DI
ASPIRAZIONE
FLANGIA DI
SCARICO

GEBRAUCHSANLEITUNG
3/16 87-900-977-01(C)
ALLGEMEINE HINWEISE
Dieses Gerät ist für den professionellen Gebrauch bestimmt.
Vor dem Gebrauch soll der Benutzer dieses Handbuch sowie
alle weiteren von Varian mitgelieferten Zusatzinformationen
genau lesen. Bei vollständiger bzw. teilweiser Nichtbeachtung
der enthaltenen Hinweise, unsachgemäßem Gebrauch durch
ungeschultes Personal, nicht autorisierten Eingriffen und
Benutzung unter Mißachtung der nationalen Bestimmungen
übernimmt Firma Varian keinerlei Haftung.
Die Pumpen DS42 sind dichte ölbadgeschmierte zweistufige
Flügelzellenpumpen, die von einem Einphasenstrommotor
betätigt werden.
Diese Hochvakuumpumpen eignen sich für das Pumpen von
nicht korrosiven Gasen.
In den folgenden Abschnitten sind alle erforderlichen
Informationen für die Sicherheit des Bedieners bei der
Verwendung des Geräts aufgeführt. Detaillierte technische
Informationen sind im Anhang "Technical Information"
enthalten.
In dieser Gebrauchsanleitung werden Sicherheitshinweise
folgendermaßen hervorgehoben:
GEFAHR!
Die Gefahrenhinweise richten die Aufmerksamkeit des Bedie-
ners auf eine spezielle Prozedur oder Praktik, die bei unkorrek-
ter Ausführung schwere Personenschäden zur Folge haben
könnte.
ACHTUNG!
Die Warnhinweise vor bestimmten Prozeduren machen den
Bediener darauf aufmerksam, daß bei Nichteinhaltung Schäden
am Gerät entstehen können.
ANMERKUNG
Die Anmerkungen enthalten wichtige Informationen, die aus
dem Text hervorgehoben werden.
LAGERUNG
Während des Transports und der Lagerung der Pumpen sollen
die folgenden Umgebungsbedingungen gegeben sein:
−Temperatur: -15 °C bis +60 °C
−Relative Feuchtigkeit: 0 - 95% (niederschlagsfrei)
VOR DER INSTALLATION
Die Pumpe wird in einer speziellen Schutzverpackung geliefert.
Eventuelle Transportschäden sind der zuständigen örtlichen
Verkaufsstelle zu melden.
Das Verpackungsgewicht beträgt, einschließlich der Pumpe,
maximal 13 Kg.
Beim Auspacken ist darauf zu achten, daß die Pumpe nicht
fallengelassen oder Stößen oder Vibrationen ausgesetzt wird.
Das Verpackungsmaterial ist ordnungsgemäß zu entsorgen. Es
ist vollständig recyclebar und entspricht der EG-Richtlinie
85/399 für den Umweltschutz.
ANMERKUNG
Die Pumpe kann, wenn sie einfach der Atmosphäre ausgesetzt
ist, nicht beschädigt werden. Sie sollte jedoch bis zur
Installation an der Anlage geschlossen bleiben, um
Verunreinigungen durch Staub zu vermeiden.
INSTALLATION
Die Pumpe darf nicht in Umgebungen installiert und/oder
benutzt werden, die ungeschützt vor Witterungsbedingungen
(Regen, Frost, Schnee), Staub und aggressiven Gasen sind
und in denen Explosions- oder erhöhte Brandgefahr besteht.
Während des Betriebs sollen die folgenden
Umgebungsbedingungen gegeben sein:
−Temperatur: +12 °C bis +40 °C
−Relative Feuchtigkeit: 0 - 95% (niederschlagsfrei).
GEFAHR!
Zum Schutz vor Kurzschlüssen oder Überlastungen, muss ein
automatischer Schalter in die Hauptspeisungsleitung zu den
Varian-Vorrichtungen installiert werden (siehe folgende Tabel-
le):
P/N 110 Vac 220 Vac
949-9308 4 A
949-9309 2.5 A
ACHTUNG!
Die Pumpe ist vor ihrer Inbetriebnahme mit Schmieröl zu füllen,
da sie leer geliefert wird.
GEFAHR!
Vor Aufnahme jeglicher Arbeiten sind die Schutzkappen an den
Saug- und Druckflanschen zu entfernen. Die im Pumpeninnern
enthaltene Luft könnte diese bei unbeabsichtigter Einschaltung
gegen den Bediener schleudern.
GEFAHR!
Bei der Installation ist unbedingt darauf zu achten, dass der
Saugflansch an die zu entleerende Kammer angeschlossen ist
und der Ablassflansch nicht verschlossen ist (siehe nachste-
hende Abbildung).
Die Pumpe darf nicht als Verdichter verwendet werden.
Der Druck im Ölbehälter darf nicht größer als 1,5 bar (abs) sein.
Bei Nichtbeachtung dieser Anweisungen besteht
Schadensgefahr für das Gerät und die Bedienperson.

GEBRAUCHSANLEITUNG
4/16 87-900-977-01(C)
ACHTUNG!
Kontrollieren, daß die Versorgungsspannung mit der
Spannungsangabe auf dem Typenschild des Motors
übereinstimmt.
Die Pumpe an das Versorgungsnetz anschließen.
GEBRAUCH
Vor der eigentlichen Inbetriebnahme der Pumpe ist es zur
Erreichung des Grenzvakuums erforderlich, die Pumpe
ungefähr eine Stunde mit geöffnetem Ballast laufen zu lassen,
um die Feuchtigkeit aus dem Öl zu entfernen.
Die Einschaltung der Pumpe erfordert keine speziellen Schritte,
sie braucht nur an die elektrische Energieversorgungsquelle
angeschlossen werden.
GEFAHR!
Die Pumpe ist für den Betrieb mit neutralen und nicht
korrosiven Fluiden konzipiert. Der Einsatz mit potentiell
explosions- oder feuergefährlichen Substanzen ist streng
verboten.
Die Ausschaltung der Pumpe erfordert keine speziellen
Schritte, sie braucht nur durch Betätigung des zweipoligen
(Version mit Einphasenstrommotor) oder des allpoligen
Trennschalters (Version mit Dreiphasenstrommotor) von der
elektrischen Energieversorgungsquelle getrennt zu werden.
WARTUNG
Das für den Betrieb und die Wartung zuständige Personal soll
geschult sein und über eine solide Kenntnis der
Unfallschutzvorschriften verfügen.
GEFAHR!
Hochspannungen können bei Kontakt tödliche Folgen haben.
Es ist stets mit größter Vorsicht und gemäß der geltenden
Unfallschutzvorschriften vorzugehen.
GEFAHR!
Bei eingeschaltetem Gerät ist auf Bewegungs- und
Hochspannungsteile zu achten.
GEFAHR!
Falls die Pumpe im Anschluß an den Betrieb gewartet werden
soll, ist abzuwarten, bis sie abgekühlt ist, da ihre Oberfläche
eine Temperatur von 60°C überschreiten kann.
GEFAHR!
Vor Wartungsarbeiten ist die Pumpe stets energiefrei zu
schalten. Am Netzschalter sind spezielle Warnschilder
“INSTANDHALTUNG AM GERÄT – NICHT EINSCHALTEN”
anzubringen. Nach Abschluß der Arbeiten sind die
Sicherheitseinrichtungen wieder zu aktivieren.
GEFAHR!
Keine Ölwechsel unmittelbar nach Stillsetzung des Gerätes
vornehmen, da die Öltemperatur sehr hoch sein kann.
ANMERKUNG
Bevor dem Hersteller eine Pumpe zur Reparatur zurückgesandt
wird, ist das Formular “Sicherheit und Gesundheit” in der
Anlage zum vorliegenden Handbuch auszufüllen und der
lokalen Verkaufsstelle zuzustellen. Eine Kopie des Formulars
ist der Pumpenverpackung vor dem Versand beizulegen.
Bei eventueller Verschrottung einer Pumpe ist diese
entsprechend der einschlägigen nationalen Vorschriften zu
entsorgen.
ENTSORGUNG
Bedeutung des "WEEE" Logos auf den Etiketten
Das folgende Symbol ist in Übereinstimmung mit der EU-
Richtlinie WEEE (Waste Electrical and Electronic Equipment)
angebracht.
Dieses Symbol (nur in den EU-Ländern gültig) zeigt an, dass
das betreffende Produkt nicht zusammen mit Haushaltsmüll
entsorgt werden darf sondern einem speziellen Sammelsystem
zugeführt werden muss.
Der Endabnehmer sollte daher den Lieferanten des Geräts -
d.h. die Muttergesellschaft oder den Wiederverkäufer - kontak-
tieren, um den Entsorgungsprozess zu starten, nachdem er die
Verkaufsbedingungen geprüft hat.
SAUGFLANSCH
ABLASSFLANSCH

MODE D'EMPLOI
5/16 87-900-977-01(C)
INDICATIONS GÉNÉRALES
Cet appareillage a été conçu en vue d'une utilisation profes-
sionnelle. Il est conseillé à l'utilisateur de lire attentivement
cette notice d'instructions ainsi que toute autre indication four-
nie par Varian avant d'utiliser l'appareil. Varian décline par
conséquent toute responsabilité en cas de non-respect total ou
partiel des instructions fournies, d'utilisation incorrecte de la
part d'un personnel non formé, d'opérations non autorisées ou
d'un emploi contraire aux réglementations nationales spécifi-
ques.
Les pompes DS42 sont des pompes rotatives à deux stades à
palettes, étanches en bain d'huile, actionnées par un moteur
électrique monophasé.
Ces pompes à vide poussé sont adaptées au pompage de gaz
non corrosifs.
Les paragraphes suivants fournissent toutes les indications
nécessaires pour garantir la sécurité de l'opérateur pendant
l'utilisation de l'appareillage. Des renseignements plus détaillés
se trouvent dans l'appendice “Technical information”.
Cette notice utilise les signes conventionnels suivants:
DANGER!
Les messages de danger attirent l'attention de l'opérateur sur
une procédure ou une manœuvre spéciale dont la mauvaise
exécution risque de provoquer de graves lésions.
ATTENTION!
Les messages d'attention apparaissent avant certaines procé-
dures dont le non-respect peut endommager sérieusement
l'appareillage.
NOTE
Les notes contiennent des renseignements importants, extrapo-
lés du texte.
EMMAGASINAGE
Pendant le transport et l'emmagasinage des pompes, il faut
veiller à respecter les conditions environnementales suivantes:
−température: de -15 °C à +60 °C
−humidité relative: 0 - 95% (non condensante)
PRÉPARATION POUR L'INSTALLATION
La pompe est fournie dans un emballage de protection spécial;
si l'on constate des marques de dommages pouvant s'être pro-
duits pendant le transport, contacter aussitôt le bureau de vente
local.
Le poids total de l'emballage et de la pompe est au maximum
de 13 Kg.
Pendant l'opération d'ouverture de l'emballage, veiller tout par-
ticulièrement à ne pas laisser tomber la pompe et à ne lui faire
subir aucun choc ni aucune vibration.
Ne pas jeter l'emballage dans la nature. Le matériel est entiè-
rement recyclable et il est conforme à la directive CEE 85/399
en matière de protection de l'environnement.
NOTE
La pompe ne peut être endommagée en restant simplement
exposée à l'atmosphère. Il est de toute façon conseillé de la
garder dans son emballage jusqu'au moment de sa mise en
fonction afin d'éviter toute pollution due à la poussière.
INSTALLATION
Ne pas installer et/ou utiliser la pompe dans des milieux expo-
sés aux agents atmosphériques (pluie, gel, neige), à des pous-
sières, à des gaz agressifs ainsi que dans des milieux explosifs
ou à risque élevé d'incendie.
Pendant le fonctionnement, il est nécessaire de respecter les
conditions environnementales suivantes :
−Température: de +12 °C à +40 °C
−Humidité relative : 0 - 95% (non condensante).
DANGER!
Pour protéger contre les court-circuits ou les surintensités, il
faut installer un disjoncteur automatique sur la ligne
d’alimentation principale vers les dispositifs Varian, de bonne
capacité (voir tableau ci-dessous):
P/N 110 Vac 220 Vac
949-9308 4 A
949-9309 2.5 A
ATTENTION!
Avant toute utilisation de la pompe, il est impératif de procéder
à son remplissage en huile de lubrification car elle est livrée
vide.
DANGER!
Avant toute autre opération, retirer les bouchons de protection
placés sur les brides d'aspiration et de vidange. En cas de mise
en marche inopinée de l'appareillage, l'air contenu à l'intérieur
de la pompe peut les projeter contre l'opérateur.
DANGER!
Pendant l'installation, faire très attention que la bride d'aspira-
tion soit reliée à la chambre à vider et que la bride d'évacuation
ne soit pas bouchée (voir la figure ci-après).
La pompe ne doit pas être utilisée comme un compresseur.
La pression maximale à l'intérieur du réservoir d'huile ne doit
pas dépasser 1,5 bar (abs).
Le non-respect de ces précautions peut entraîner un danger
pour l'opérateur et l'endommagement de la machine.

MODE D'EMPLOI
6/16 87-900-977-01(C)
ATTENTION!
Contrôler que la tension d'alimentation correspond à la tension
indiquée sur la plaquette du moteur.
Brancher la pompe à la source d'alimentation.
UTILISATION
Avant la mise en service de la pompe, il est nécessaire, pour
atteindre le vide maximum, de faire fonctionner la pompe pen-
dant environ une heure avec le reniflard ouvert afin de suppri-
mer l'humidité de l'huile.
La mise en marche de la pompe ne requiert aucune manœuvre
particulière; il suffit de la brancher à l'alimentation électrique.
DANGER!
La pompe a été conçue pour fonctionner avec des fluides neu-
tres ou non corrosifs. L'emploi de substances potentiellement
explosives ou inflammables est strictement interdit.
L'arrêt de la pompe ne requiert aucune manœuvre particulière ;
il suffit de la débrancher de l'alimentation électrique en agissant
sur l'interrupteur bipolaire (version avec moteur monophasé) ou
unipolaire (version avec moteur triphasé).
MAINTENANCE
Le personnel chargé de la conduite et de la maintenance de la
pompe doit avoir reçu la formation nécessaire et posséder une
connaissance approfondie des normes de prévention des acci-
dents du travail.
DANGER!
Les hautes tensions peuvent entraîner la mort par contact. Veil-
ler à toujours opérer avec le maximum de prudence et dans le
respect des normes de prévention des accidents du travail en
vigueur.
DANGER!
Lorsque la machine est sous alimentation, faire attention à la
présence d'organes en mouvement et de haute tension.
DANGER!
En cas de nécessité de procéder à des opérations de mainte-
nance de la pompe au terme d'une période de fonctionnement,
il est indispensable de la laisser refroidir car sa température
extérieure peut être supérieure à 60°C.
DANGER!
Avant toute opération de maintenance, il est impératif de tou-
jours couper l'alimentation de la pompe. Placer les pancartes
spécifiques d'avertissement : APPAREILLAGE EN COURS DE
MAINTENANCE – NE PAS BRANCHER L'ALIMENTATION,
près de l'interrupteur d'alimentation. Au terme des opérations
de maintenance, restaurer les dispositifs de sécurité.
DANGER!
Ne pas effectuer la substitution d'huile immédiatement après
l'arrêt de la machine car la température de cette dernière peut
être élevée.
NOTE
Avant de retourner une pompe au constructeur pour réparation,
il est indispensable de remplir et d'adresser au bureau local de
vente la fiche "Sécurité et Santé" jointe à la présente notice
d'instructions. Une copie de celle-ci devra être mise dans l'em-
ballage de la pompe avant expédition.
En cas de mise au rebut de la pompe, procéder à son élimina-
tion conformément aux réglementations nationales en la ma-
tière.
MISE AU REBUT
Signification du logo "WEEE" figurant sur les étiquettes
Le symbole ci-dessous est appliqué conformément à la direc-
tive CE nommée "WEEE".
Ce symbole (uniquement valide pour les pays de la Com-
munauté européenne) indique que le produit sur lequel il est
appliqué NE doit PAS être mis au rebut avec les ordures mé-
nagères ou les déchets industriels ordinaires, mais passer par
un système de collecte sélective.
Après avoir vérifié les termes et conditions du contrat de vente,
l’utilisateur final est donc prié de contacter le fournisseur du
dispositif, maison mère ou revendeur, pour mettre en œuvre le
processus de collecte et mise au rebut.
BRIDE DE
ASPIRATION
BRIDE DE
ÉVACUATION

INSTRUCTION MANUAL
7/16 87-900-977-01(C)
GENERAL INFORMATION
This equipment is destined for use by professionals. The user
should read this instruction manual and any other additional
information supplied by Varian before operating the equipment.
Varian will not be held responsible for any events occurring due
to non-compliance, even partial, with these instructions, im-
proper use by untrained persons, non-authorized interference
with the equipment or any action contrary to that provided for by
specific national standards.
DS42 pumps are dual-stage, rotary vane pumps oil sealed,
driven by a single-phase electric motor.
These high vacuum pumps are suitable for pumping non corro-
sive gases.
The following paragraphs contain all the information necessary
to guarantee the safety of the operator when using the equip-
ment. Detailed information is supplied in the appendix "Techni-
cal Information".
This manual uses the following standard protocol:
WARNING!
The warning messages are for attracting the attention of the
operator to a particular procedure or practice which, if not fol-
lowed correctly, could lead to serious injury.
CAUTION
The caution messages are displayed before procedures which,
if not followed, could cause damage to the equipment.
NOTE
The notes contain important information taken from the text.
STORAGE
When transporting and storing the pumps, the following envi-
ronmental requirements should not be exceeded:
−temperature: from -15° to +60 °C
−relative humidity: 0 - 95% (non-condensing)
PREPARATION FOR INSTALLATION
The pump is supplied in a special protective packing. If this
shows signs of damage which may have occurred during trans-
port, contact your local sales office.
Total weight of the pack, including the pump, is approx. 13 Kg.
When unpacking the pump, be sure not to drop it and avoid any
kind of sudden impact or shock vibration to it.
Do not dispose of the packing materials in an unauthorized
manner. The material is 100% recyclable and complies with
EEC Directive 85/399.
NOTE
Normal exposure to the environment cannot damage the pump.
Nevertheless, it is advisable to keep it closed until it is installed
in the system, thus preventing any form of pollution by dust.
INSTALLATION
Do not install or use the pump in an environment exposed to
atmospheric agents (rain, snow, ice), dust, aggressive gases,
or in explosive environments or those with a high fire risk. Dur-
ing operation, the following environmental conditions must be
respected:
−temperature: from +12 °C to +40 °C
−relative humidity: 0 - 95% (non-condensing)
WARNING!
Protect against short circuits and overload by installing on Var-
ian Device electrical main line an automatic circuit breaker of
proper capacity (see table here below):
P/N 110 Vac 220 Vac
949-9308 4 A
949-9309 2.5 A
CAUTION
Before starting the pump, fill up with lubricating oil as the pump
is delivered empty.
WARNING!
Take out the protective caps on the suction and exhaust
flanges before doing anything else. In the event of an acciden-
tal start-up, the air inside the pump could violently expel the
protective caps and harm the operator.
WARNING!
During installation, pay maximum attention that the suction
flange is connected to the vacuum chamber and the exhaust
flange is not closed (see the following figure).
The pump must not be used as a compressor.
Maximum pressure inside the oil container must not exceed 1.5
bar (abs.)
Non-observance of these precautions may be dangerous for
the machine and the operator.

INSTRUCTION MANUAL
8/16 87-900-977-01(C)
CAUTION
Check that your electrical mains voltage corresponds to that
indicated on the motor’s plate.
Connect the pump to the power supply.
USE
Before being put into service, in order to reach maximum vac-
uum, the pump must be left running for about an hour with the
gas ballast valve open. This will eliminate any humidity from the
oil.
There are no special procedures for switching the pump on; it
needs only to be connected to the electric power.
WARNING!
The pump is designed for operation with neutral or non-
corrosive fluids. It is absolutely forbidden to use potentially ex-
plosive or flammable substances.
There are no special procedures for switching the pump off; it
needs only to be disconnected from the electric power.
MAINTENANCE
Personnel responsible for pump operation and maintenance
must be well-trained and must be aware of the accident preven-
tion rules.
WARNING!
Death may result from contact with high voltages. Always take
extreme care and observe the accident prevention regulations
in force.
WARNING!
When machine is powered take care on account of moving
parts and high voltages.
WARNING!
If you have to perform maintenance on the pump after a con-
siderable time in operation, leave it to cool as temperature of
the outer surface may be in excess of 60 °C.
WARNING!
Always disconnect the power supply to the pump before start-
ing maintenance work. Place a special warning signs over the
power supply breaker switch: MACHINE UNDERGOING
MAINTENANCE - DO NOT POWER ON. When finished, re-
move the safety warning.
WARNING!
Do not change the oil immediately after stopping the machine
as the oil temperature may still be high.
NOTE
Before returning the pump to the constructor for repairs the
"Health and Safety" sheet attached to this instruction manual
must be filled-in and sent to the local sales office. A copy of the
sheet must be inserted in the pump package before shipping.
If a pump is to be scrapped, it must be disposed of in accor-
dance with the specific national standards.
DISPOSAL
Meaning of the "WEEE" logo found in labels
The following symbol is applied in accordance with the EC
WEEE (Waste Electrical and Electronic Equipment) Directive.
This symbol (valid only in countries of the European Com-
munity) indicates that the product it applies to must NOT be
disposed of together with ordinary domestic or industrial waste
but must be sent to a differentiated waste collection system.
The end user is therefore invited to contact the supplier of the
device, whether the Parent Company or a retailer, to initiate the
collection and disposal process after checking the contractual
terms and conditions of sale.
SUCTION
FLANGE
EXHAUST
FLANGE

TECHNICAL INFORMATION
9/16 87-900-977-01(C)
SECTION I
TECHNICAL DESCRIPTION
DS42 is a dual-stage, rotary vane pump oil sealed,
driven by a single-phase electric motor.
It is available in two models:
- DS 42 949-9308 100-110 V nominal voltage
- DS 42 949-9309 220-240 V nominal voltage
This vacuum pump is suitable for pumping non
corrosive gases.
The main features are:
- all materials are carefully selected to provide
extended life;
- a high capacity gas ballast device allow to
pump condensable vapors;
- all the parts composing the pump are fully re-
placeable due to the close machining toler-
ances and to the centering obtained by using
reference pins;
- due to its design features and low number of
gaskets, the pump requires little maintenance,
disassembly and reassemble are easy and
require minimal time.
The pump works with force-feed lubrication, pro-
vided by an auxiliary gear-pump driven by the rotor
of the vacuum pump itself. This ensures proper lu-
brication even when pressures are close to at-
mospheric.
The entire pump functional block is immersed in
the oil contained in the casing. The oil guarantees
perfect sealing of the discharge valves, enters the
pump to ensure lubrication and sealing of the parts
inside, facilitates heat dissipation and reduces
pump noise.
The pump is equipped with a special anti-
suckback device.
There is one oil seal on the rotor shaft, preventing
oil from seeping out of the pump. This seal acts on
a bushing fitted onto the shaft.
The vacuum pumps are connected directly to the
electric motor through a flexible coupling, so that
motion is transmitted even in case of poor align-
ment.
LUBRICATION
The pump’s lubricating system is force-feed type.
Oil circulation is obtained by means of a gear
pump connected to the rotor shaft.
The required flow of oil under pressure passes
through ducts that are drilled in the walls of the
pump and lubricates the bushings and the inside
parts.
INLET PORT
OUTLET PORT

TECHNICAL INFORMATION
10/16 87-900-977-01(C)
VACUUM SEALS
The seals in the circuit are obtained by means of
VITON gaskets.
Sealing of the rotor shaft is guaranteed by a rotat-
ing gasket with dust-guard lip.
The suction flange and duct are sealed by mean of
OR gaskets.
GAS BALLAST VALVE
When the pump sucks in vapors, these condense
during compression and mix with the oil, forming
an emulsion (an aqueous vapor, for example) or a
solution (organic solvent vapors, for example).
A number of problems arise from this, such as the
impossibility of obtaining high vacuums, the altera-
tion of the properties of the oil, could cause scaling
on parts of the pump.
To avoid this, during compression at the second
stage, atmospheric air is let into the pump through
an adjustable valve, or “gas ballast valve”, located
at the top of the pump.
In this way, the discharge valve of the second
stage opens through the effect of the atmospheric
air before the partial pressure of the vapor reaches
saturation point, thus preventing condensation
from occurring. The vapors are expelled mixed
with air.
TECHNICAL DATA
The following table lists the main technical data of
the DS42.
TECHNICAL DATA Hz UNITS VALUE
FREE AIR DISPLACEMENT 60 l/min (cfm) 45.5 (1.6)
50 l/min (m3/h) 38 (2.3)
PUMPING SPEED * 60 cfm 1.2
50 m3/h 1.8
ULTIMATE PARTIAL PRES-
SURE * mbar 10-4Range
ULTIMATE TOTAL PRES-
SURE * mbar 4x10-3
ULTIMATE TOTAL PRES-
SURE WITH GAS BALLAST * mbar 2x10-2
WATER VAPOR TOLERANCE mbar 15
WATER VAPOR CAPACITY g/h 60
OIL CAPACITY min/max l 0.6
MOTOR RATING 1ph 50/60 kW 0.4
NOMINAL ROTATION SPEED 50 rpm 2280
60 rpm 3480
OIL TEMPERATURE °C 60
(pump operating) ** °F 140
Installation category II
Pollution degree 2
OPERATING TEMPERATURE
RANGE °C 12-40
WEIGHT Kg 11.0
lb 24
INLET FLANGE DN 16
EXHAUST FLANGE DN 16
Dimensions:
- length mm 309
- width mm 173
- height mm 192
Input single phase versions
Nominal voltages: 50/60 V 220-240
50/60 V 100-110
Maximum currents: 50 A 1.8
60 A 2.7
Fuse (slow-blow type) 6
Lubricant 949-9305 RV Fluid
DS 31
Type
* According to PNEUROP 6602
** At ultimate total pressure, 20 °C (68 °F) room temperature

TECHNICAL INFORMATION
11/16 87-900-977-01(C)
SAFETY PRECAUTIONS
The pump must be set in position taking the up-
most care in order to avoid accidental falls.
WARNING!
In case of a need to handle the pump after a pe-
riod of operation, it must be left to cool first as the
external surface temperature may be in excess of
60 °C.
TRANSPORT AND INSTALLATION
The pumps are shipped to the customer inside
cardboard boxes.
Total weight of the pack, including the pump, is
about 13 Kg.
The case must be handled with care, using appro-
priate lifting equipment.
CAUTION
When moving the case, ensure that it is securely
bound to the lifting equipment and that the equip-
ment is strong enough to support the weight.
The pump’s working environment is a traditional
industrial environment. Naturally sites with corro-
sive vapors or excessive heat are best avoided.
Room temperature should ideally be between 12
°C and 40 °C.
If the temperature is not inside this range, consult
Varian technical service for the changes required.
Setting the pump in position should be performed
as follows:
- Pump laid on the ground. There are no special
instructions for this type of installation, except
that the floor should be as flat as possible and
suited to bear the weight of the pump (it
should ideally be a concrete floor) and of any
accessories mounted on it. Note that the
pump is stable on its base plate and it should
not be necessary to anchor it to the floor with
bolts and screws; also vibrations to and from
the pump are greatly reduced by the use of
rubber feet.
- Pump off the ground. In this case, the user
must design a suitable support structure, re-
membering the following points:
* the plane supporting the pump must be
perfectly horizontal;
* the structure should be adequately rigid;
* the relevant safety precautions should be
applied.
Note also that the pump should be attached to
the supporting structure after replacing the
rubber feet with special anti-vibration feet,
which should be screwed to the pump base
and to the supporting plane.
After taking the pump out of its packing case, you
are advised to ensure that the pump has not suf-
fered any damage during shipping.
PRELIMINARY OPERATIONS
Before starting the pump, fill up with lubricating oil
as the pumps are delivered empty.
NOTE
A tin of oil is included in the packing.
CAUTION
Oil must be poured into the casing through the
special threaded plughole and NOT through the
suction line.
WARNING!
Take out the protective caps on the suction and
exhaust flanges before doing anything else. In the
event of an accidental start-up, the air inside the
pump could violently expel the protective caps and
harm the operator.

TECHNICAL INFORMATION
12/16 87-900-977-01(C)
SECTION II
ELECTRICAL MOTOR
It’s in accordance with major international stan-
dards (UL, CSA, CE).
The correct cable for electrical wiring is a three
wires (Ph+N+Earth) cable. The wire section has to
be at least 1mm2(AWG17) and the cable external
diamenter has to be between 7mm to 12mm.
CAUTION
Before connecting to the mains, check that your
electrical mains voltage corresponds to the motor
voltage.
WARNING!
A switch on circuit breaker must be included in the
building installation.
It shall be in the close proximity to the equipment
and within easy reach of the operator.
It shall be marked as the disconnecting device for
the equipment.
NOTE
If you start a pump at low temperature, the current
absorbed by the motors will be for several seconds
higher than the nominal one, for this reason the
fuse or the protection device on the line must be of
the slow-blow type.
WARNING!
Disconnect the motor from the mains before open-
ing the electrical box.
WARNING!
Close the motor electrical box cover before con-
necting to the main.
CAUTION
It is recommended to connect the pump to the
power supply through a dedicated switch on the
main electrical panel of the installation, or in prox-
imity of the power supply connection point.
Motor Electrical box
GROUND CONNECTION
MAIN CABLE INPUT
MAIN TERMINALS

TECHNICAL INFORMATION
13/16 87-900-977-01(C)
CONNECTIONS TO THE INLET AND EXHAUST
FLANGES
Remove the protective caps from both flanges.
Connect the system to be evacuated to the inlet
flange, using a centering ring with OR and a lock-
ing collar.
NOTE
For guaranteed reliable sealing, use an OR gasket
in Perbunan or Viton.
The inlet duct is equipped with a sieve filter pre-
venting solid particles from entering and damaging
the pump.
NOTE
When the gases to be pumped out contain dust, it
is advisable to insert a dust filter before the inlet
flange.
NOTE
When the gases to be pumped out contain large
quantities of vapor, it is advisable to include a con-
dense separator before the inlet flange.
To make best use of the pump’s capacity, use only
short, straight piping, with a diameter not smaller
than that of the inlet flange.
NOTE
If rigid piping is used, it is good practice to use a
flexible joint in order to avoid undue forcing of the
connection on the pump.
The exhaust duct must be connected to a pipe that
will take away the pumped out gases.
NOTE
Application of an oil trap filter is necessary to avoid
pollution of the surrounding atmosphere by the oil
present in the exhaust duct during pump opera-
tion.
CAUTION
Never block the pump exhaust line. This would
cause overpressure in the casing with the risk of
breaking the glass window of the level indicator
and/or expelling the oil seal gasket.
STARTING AND RUNNING THE PUMP
Before being put into service, in order to reach
maximum vacuum, the pump must be left running
for about an hour with the gas ballast valve open.
This will eliminate any humidity from the oil.
WARNING!
The pump is designed for operation with neutral or
non-corrosive fluids. It is absolutely forbidden to
use potentially explosive or flammable substances.
NOTE
If the pump is started with cold oil, initially more
than normal noise will be heard; this will last for a
few minutes only until the oil reaches its working
temperature.
There are no special instructions for normal opera-
tion of the pump, which is delivered to you after
completion of a running-in cycle in the factory.
If the pump is sucking in environments with liquids
or vapors, it is important to leave it to run with the
gas ballast open so as to avoid condensation of
the vapors and contamination of the lubricating oil
as a result. When there is no danger of the oil be-
ing contaminated, the gas ballast valve should be
closed to reduce the pump’s power absorption.
The gas ballast valve will prove useful in the cold
season when, due to the lower room tempera-
tures, it takes longer for the pump to reach rated
temperature when switched on. Compression of
the air forced in by the gas ballast valve develops
heat, which in turn increases temperature of the oil
faster.
NOTE
If gases without vapors are sucked in, you are ad-
vised to open the gas ballast device from time to
time in order to eliminate the traces of humidity
they contain.
NOTE
For repetitive work cycles, with brief time intervals
in between, it is better not to stop the pump.

TECHNICAL INFORMATION
14/16 87-900-977-01(C)
STOPPING THE PUMP
There are no special procedures for switching the
pump off; it needs only to be disconnected from
the electric power.
When the pump is stopped, the anti-suckback de-
vice makes it possible to maintain vacuum in the
vessel connected on the inlet flange of the pump.
If the pump is expected to be stopped for a lengthy
period, or in any case if it has pumped in large
amounts of vapors, it is good practice to run it with
the gas ballast open and the inlet line closed for a
few minutes before switching off in order to limit
the risk of corrosion or scaling due to pollution of
the oil by condensed vapors.
SAFETY RULES
Personnel responsible for pump operation and
maintenance must be well-trained and must be
aware of the accident prevention rules.
The accident prevention precautions contained in
this section must be respected at all times during
operation and maintenance of the pump to avoid
damage to operators and to the pump.
These precautions are provided in the form of
WARNING and CAUTION notes.
WARNING!
Operating procedures, technical information and
precautions which, if not respected and/or imple-
mented correctly may cause body harm to opera-
tors.
CAUTION
Operating procedures, technical information and
precautions which, if not respected and/or imple-
mented correctly may cause damage to the pump.
WARNING NOTES 
a. Death may result from contact with high volt-
ages. Always take extreme care and observe
the accident prevention regulations in force.
b. Always disconnect the power supply to the
pump before maintenance work. Place a spe-
cial warning signs over the power supply
breaker switch: MACHINE UNDERGOING
MAINTENANCE - DO NOT POWER ON.
c. If you are performing maintenance after the
pump has been operating for a considerable
time, allow sufficient time for it to cool as the
external surface temperature may be in ex-
cess of 60 °C.
d. Failure to provide the pump with an earth con-
nection may cause serious damage to opera-
tors. Always ensure that there is an earth
connection and that it complies with the stan-
dards.
e. When cleaning the pump and its component
parts, avoid the use of flammable or toxic sol-
vents, such as benzin, benzol, ether or alco-
hol. The recommendation is to use a soap and
water solution, preferably in ultrasound wash-
ing machines, taking care to dry all the
cleaned parts at temperatures under 100 °C in
order to eliminate residual moisture.
f. Prolonged overloads or breakdowns may
cause the electric motor to overheat, and to
release noxious smoke; remove the power
immediately as a precaution and do not ap-
proach the pump at least until you have pro-
vided ventilation to drive out the smoke. Take
care not to breathe in the fumes remaining in-
side the pump in the course of repair work.
g. In case of fire, do not throw water on the
pump. Switch the power off and use CO2 ex-
tinguishers.
h. Carefully inspect the flanges to ensure that
there are no dust, oil, dirt or defects of the
mating surfaces, before making the required
connections.
i. Ensure that all joints and couplings are locked
correctly before starting the pump again after
repair work.
j. Do not wear any objects that may become en-
tangled in the mechanisms and/or act as con-
ductors (chains, bracelets, etc.).
k. Ensure that the tools to be used are in perfect
working condition and have insulating grips,
where necessary. Check that the insulating
material of the cables and that the conductors
of the test equipment do not show any signs
of damage.
l. Do not replace the oil immediately after stop-
ping the machine as the oil may still be at high
temperature.
m. Perform repairs in clean and, where possible,
dust-free areas. Protect all the clearances of
connection points with suitable plastic caps and
cover the machined surface areas of all parts
stripped down until they are put back on the
pump again.

TECHNICAL INFORMATION
15/16 87-900-977-01(C)
CAUTION NOTES 
a. Before putting the pump back into operation
after a breakdown, inspect it and check care-
fully for any other signs of damage.
b. Use only tools that are in perfect working or-
der and specially designed for the job; use of
inappropriate or ineffective tools may cause
serious damage.
c. Perform repairs in clean and, where possible,
dust-free areas. Protect all the clearances of
connection points with suitable plastic caps
and cover the machined surface areas of all
parts stripped down until they are put back on
the pump again.
d. Always check the lubricant and that it is prop-
erly distributed through the pump; inadequate
lubrication may damage the pump seriously.
MAINTENANCE ACTIONS
NOTE
The frequency with which repairs are performed de-
pends on the process and presence of substances
that shorten pump life (dust, abrasives, solvents,
water, chemically aggressive substances).
The pump must be cleaned at regular intervals of
time.
CAUTION
Do not clean with Alcohol the plastic or rubber
components of the pump.
Use only the strictly necessary amount of lubricant;
an excess of lubricating oil, like when there is
none, may sometimes compromise proper opera-
tion of the pump.
Only the recommended lubricants, or lubricating
oils with similar characteristics and known and ex-
perimented quality, should be used.
Oil changes must be made with the oil at a suffi-
ciently high temperature, after leaving the pump to
cool for a few minutes following operation.
The drain and filler plugs must not be left open any
longer than is strictly necessary.
When performing maintenance, look out for all sig-
nals that may precede a breakdown, in particular:
•traces of corrosion;
•oil leaks;
•slack joints or couplings.
Maintenance technicians must:
•be aware of all applicable national directives
concerning accident prevention during work
on motor-driven pumps and should know how
to apply them;
•have read and understood all the sections on
“Safety Rules";
•be familiar with the essential design features
and operation of the pump;
•know how to use and consult the pump docu-
mentation;
•be concerned about proper operation of the
pump;
•make a note of any irregularities in operation
of the pump and take the necessary action,
where appropriate.
Use original spare parts wherever possible and
repair a broken part as best as possible on site or
send it back to the manufacturer for repairs.
For all problems arising, or to order spare parts,
refer to our service department.
Varian S.p.A. - Vacuum Technologies
Via Varian 54
10040 Leinì (Torino) - Italy
Telephone: [phone]
Fax: [phone]
LUBRICANTS
It will be readily understood how important ade-
quate lubrication is to high technology pumps like
the Varian vacuum pumps. Correct use of appro-
priate lubricants makes a significant contribution to
achieving best performance and warding off de-
fects.
When handling lubricants, the following sanitary
protection measures should be observed at all
times:
•Avoid prolonged, excessive or repeated con-
tact of the skin with products for lubrication,
and also avoid directly inhaling the fumes or
vapors of such products.
•Protect the skin by wearing appropriate
clothes and equipment (e.g. special suits,
glasses or, where permitted by the safety
regulations, gloves) or by applying a special
protective product.
•Clean the skin carefully after contact with the
lubricants by washing freely with water and
soap.
•Apply a skin cream after washing.