Debem CUBIC Series Setup guide

AIR-OPERATED
PUMPS
series
CUBIC
CUBIC rev. 2022
TRANSLATION OF ORIGINAL
INSTRUCTIONS
DEBEM s.r.l. - Via Del Bosco, 41 - Busto Arsizio (VA) ITALY
Tel. [phone] - fax [phone] - [email protected] - www.debem.com
INDUSTRIAL PUMPS
[email protected] - www.debem.com
CHEMICAL / PAINTING / PRINTING / WATER TREATMENT / GALVANIC / TEXTILE / CERAMIC / AUTOMOTIVE / MECHANICAL / OIL & GAS

1 2 3 4 5 6 7 8
9 3 10 11 12 13
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IDENTIFICATION AND NOMENCLATURE OF PARTS
POS. NOMENCLATURE POS. NOMENCLATURE
1PUMP CASING 8AIR EXHAUST SILENCER
2BALL SEAT DELIVERY VALVES 9SUCTION BALL VALVE SEAT
3BALL 10 CAP
4OUTER DIAPHRAGM (product side) 11 DISTRIBUTOR CENTRAL BODY
5SHAFT 12 PNEUMATIC EXCHANGER
6DELIVERY MANIFOLD 13 SUCTION MANIFOLD
7INNER DIAPHRAGM (air side)
All rights of total or partial reproduction, translation and adaptation by any means are reserved in all countries.
Layout and creation of contents: Infograca sas

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Translation of Original Instructions CUBIC - rev. 2022
CHAPTER 1 GUIDANCE DOCUMENTS 4 - 12
1.1 DECLARATION OF CONFORMITY 5
1.2 LIST OF RESIDUAL RISKS 6
1.3 INTRODUCTION TO THE MANUAL 7 - 10
1.4 DELIVERY NOTE 11
1.5 GENERAL NOTES ON DELIVERY 11
1.6 WARRANTY 12
CHAPTER 2 INTRODUCTORY INFORMATION 13 - 21
2.1 PUMP IDENTIFICATION 14
2.2 PUMP CONFIGURATION CODE 15
2.3 ATEX MARKING AND DEFINITION 16 - 17
2.4 PUMP DESCRIPTION 18
2.5 INTENDED USE AND IMPROPER USES 18 - 19
2.6 TECHNICAL FEATURES 20 - 21
CHAPTER 3 WARNINGS AND REQUIREMENTS 22 - 26
3.1 SAFETY RULES 23 - 26
CHAPTER 4 TRANSPORT AND INSTALLATION 27 - 36
4.1 STORAGE AND PRESERVATION 28
4.2 TRANSPORT AND HANDLING 29
4.3 POSITIONING AND INSTALLATION 30 - 33
4.4 PNEUMATIC CONNECTION 34 - 36
4.5 CHECKS BEFORE COMMISSIONING 36
CHAPTER 5 COMMISSIONING AND SHUTDOWN 37 - 41
5.1 COMMISSIONING AND OPERATION 38 - 39
5.2 NORMAL SHUTDOWN OF THE PUMP 40
5.3 EMERGENCY STOP OF THE PUMP 41
CHAPTER 6 ROUTINE MAINTENANCE 42 - 55
6.1 SCHEDULED MAINTENANCE TABLE 43
6.2 EXTERNAL CLEANING AND TIGHTNESS CHECK 44 - 45
6.3 TIGHTNESS CHECK 46 - 47
6.4 PRODUCT CIRCUIT MAINTENANCE 48 - 52
6.5 AIR CIRCUIT MAINTENANCE 53 - 55
CHAPTER 7 TROUBLESHOOTING 56 - 57
CHAPTER 8 DECOMMISSIONING AND DISPOSAL 58 - 62
8.1 DECOMMISSIONING AND WASHING FORM 59 - 60
8.2 DISPOSAL 61 - 62
CHAPTER 9 SPARE PARTS 63 - 69
9.1 MIDGETBOX SPARE PARTS 64 - 65
9.2 CUBIC 15 SPARE PARTS 66 - 67
NOTES 68 - 71
TABLE OF CONTENTS

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Translation of Original Instructions CUBIC - rev. 2022
This chapter includes the Declaration of Incorporation, the List of Residual Risks and information on the struc-
ture of the Original Instructions so that Operators and Technicians can properly consult the manual itself.
THIS PART INCLUDES THE FOLLOWING TITLES PAGE
1.1 DECLARATION OF CONFORMITY
5
1.2 LIST OF RESIDUAL RISKS
6
1.3 INTRODUCTION TO THE MANUAL
7 - 10
1.4 DELIVERY NOTE
11
1.5 GENERAL NOTES ON DELIVERY
11
1.6 WARRANTY
12
Below is a detailed description of each topic mentioned.
CHAPTER 1
GUIDANCE DOCUMENTS

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CUBIC STANDARD
DICHIARAZIONE (CE - UE) DI CONFORMITÀ
DECLARATION (CE - UE) OF CONFORMITY
FABBRICATO DA: MANUFACTURED BY
DEBEM SRL - Via del bosco 41 - 21052 Busto Arsizio (VA) – ITALIA
LA PRESENTE DICHIARAZIONE DI CONFORMITÀ È RILASCIATA SOTTO LA RESPONSABILITÀ ESCLUSIVA DEL FABBRICANTE.
This declaration of conformity is issued under the sole responsibility of the manufacturer.
TIPO: TYPE
POMPA PNEUMATICA A MEMBRANA / AIR OPERATED DIAPHRAGM PUMP
MARCATURA ATEX: MARKING ATEX
II 3G Ex h IIB T4 Gc
II 3D Ex h IIIB T135°C Dc X
MODELLO: MODEL
MODELLO
N° DEPOSITO: DEPOSIT NUMBER
8000310728
CODICE: CODE
CODICE
MATRICOLA: SERIAL NUMBER
MATRICOLA
L’oggetto della dichiarazione di cui sopra è conforme alle pertinenti normative di armonizzazione dell’Unione:
The object of the declaration described above is in conformity with the relevant Union harmonisation legislation:
2006/42/CE : Direttiva Macchine / Machinery Directive
2014/34/UE: Direttiva ATEX, concernente l’armonizzazione delle legislazioni degli Stati membri relative agli apparecchi e sistemi di protezione
destinati a essere utilizzati in atmosfera potenzialmente esplosiva (rifusione)
2014/34/UE: ATEX Directive, on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in
potentially explosive atmospheres (recast)
UNI EN ISO 12100:2010 – Sicurezza del macchinario - Principi generali di progettazione - Valutazione del rischio e riduzione del rischio.
UNI EN ISO 12100:2010 – Safety of machinery - General principles for design - Risk assessment and risk reduction.
UNI EN 809:2009 - Pompe e gruppi di pompaggio per liquidi - Requisiti generali di sicurezza.
UNI EN 809:2009 - Pumps and pump units for liquids - Common safety requirements.
EN ISO 80079-36:2016 – Atmosfere esplosive - Parte 36: Apparecchi non elettrici destinati ad essere utilizzati in atmosfere potenzialmente
esplosive. Metodo e requisiti di base.
EN ISO 80079-36:2016 – Explosive atmospheres - Part 36: Non-electrical equipments to be used in potentially explosive environments. Method and basic
requirements.
EN ISO 80079-37:2016 – Atmosfere esplosive - Parte 37: Apparecchi non elettrici per atmosfere potenzialmente esplosive. Tipo di protezione non
elettrica per sicurezza costruttiva "c", per controllo della sorgente di accensione "b", per immersione in liquido "k".
EN ISO 80079-37:2016 – Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres. Non-electrical type of protection
constructional safety ''c'', control of ignition sources ''b'', liquid immersion ''k''.
ESTENSIONI: la presente dichiarazione si estende anche ai modelli MIDGETBOX e ai relativi modelli SCUBIC e SMIDGET.
EXTENSIONS: this declaration is also valid for the following versions MIDGETBOX and related SCUBIC and SMIDGET models.
ATTENZIONE: data l’innumerevole varietà di prodotti e composizioni chimiche, l’utilizzatore è ritenuto il maggior conoscitore delle reazioni e compatibilità
con i materiali costruttivi della pompa. Pertanto, prima dell’impiego, eseguire con perizia tutte le verifiche e prove necessarie al fine di evitare situazioni
pericolose anche se remote che non possono essere conosciute ed imputabili al costruttore. Per ogni controversia il Foro Competente è quello di Busto
Arsizio.
WARNING: since there exists an endless variety of products and chemical compositions, the user is presumed to have the best knowledge of their
reaction and compatibility with the materials used to build the pump. Therefore, before using the pump, all the necessary checks and tests must be performed
with great care to avoid even the slightest risk, an event that the manufacturer cannot foresee and of which he cannot be held responsible. Any controversy
lies within competence of the Court of Busto Arsizio.
PERSONA AUTORIZZATA A CUSTODIRE IL FASCICOLO: PERSON AUTHORISED TO KEEP THE FILE
MARCO DE BERNARDI - SOCIO AMMINISTRATORE
LUOGO PRESSO CUI È CUSTODITO IL FASCICOLO: THE FILE IS KEPT IN
VIA DEL BOSCO, 41 - 21052 BUSTO ARSIZIO (VA) – ITALIA
APPROVATO DA: APPROVED BY
MARCO DE BERNARDI - SOCIO AMMINISTRATORE
LUOGO: BUSTO ARSIZIO - DATA: DATASPED
FACSIMILE PAGE
1.1 DICHIARAZIONE DI CONFORMITÀ - DECLARATION OF CONFORMITY

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1.2 LIST OF RESIDUAL RISKS
After careful analysis and evaluation of the hazards involved in the operating phases of the CUBIC series of air-op-
erated pumps, the necessary measures have been taken to eliminate or reduce the related risks. The residual risks
were reported and dealt with in the Installation, Use, and Maintenance Manual (Original Instructions) provided with
the pump, so that they can be further reduced or eliminated through the design of the machines in which they will
be installed and the integration of safety measures:
HANDLING AND POSITIONING - CONSULT PROCEdURES IN THE ORIGINAL INSTRUCTIONS
• Impact and crushing hazard
INSTALLATION - CONSULT PROCEdURES IN THE ORIGINAL INSTRUCTIONS
• Hazards related to toxic and/or corrosive liquids to be pumped;
• Danger of chemical incompatibility with the uids to be pumped;
• Danger of product leakage with dangerous uids; (provide ow and collection containment protections);
• Danger of chemical reaction with uids reacting to tap water for testing; (open and dry the internal parts of the
pump before installing it);
• Crushing hazard.
OPERATION - CONSULT PROCEdURES IN THE ORIGINAL INSTRUCTIONS
• Hazards related to toxic and/or corrosive liquids to be pumped;
• Danger of chemical incompatibility with the uids to be pumped;
• Danger of stress corrosion cracking (combined action of corrosion and/or incorrect application of a load) com-
bined with high temperatures;
• Fire hazard due to the deposit of ammable dust or use with temperatures higher than those shown on the prod-
uct Identication Plate.
CLEANING AND MAINTENANCE - CONSULT PROCEdURES IN THE ORIGINAL INSTRUCTIONS
• Hazards related to toxic and/or corrosive liquids to be pumped;
• Danger of projection of pump parts during disassembly due to residual internal pressures (anomalous) in the pneu-
matic circuit of the pump;
• Danger of rupture of diaphragms due to lack of Scheduled Maintenance.
The persons in charge of designing the machine/system in which the CUBIC series air-operated pumps will be
installed must consider the residual risk indicated in each operational phase and must take the necessary safety
integration measures provided by the applicable directives before commissioning. It is forbidden to commission
the pump before the machine in which it is to be incorporated has been declared compliant with Directive
2006/42/EC and any further applicable specic Regulations and/or Directives.
Whoever works in these areas and deals with these operational phases must be trained and aware that there may
still be “residual risks” (related to the type of uid used and the chemical compatibility) that it was not possible to
eliminate.
The persons in charge of these operations must always have at their disposal (consult and understand) all the
information contained in the Manufacturer’s Manual (Original Instructions or Translation of Original Instructions) and
must obtain the necessary Personal Protective Equipment (PPE) provided before intervening.
The Customer, the Installation and Maintenance Technicians, and the Qualied Operators are responsible for
arranging all the necessary measures so that access near the pump is reserved and limited to trained and qualied
personnel and for providing adequate information and reports of any residual risk on the machine/system in which
it will be installed, in compliance with current safety laws.
Since an endless variety of products and chemical compositions of the uids exists, the user is presumed to have the
best knowledge of their compatibility and chemical reaction with the pump’s construction materials. The purchaser
is strictly responsible for selecting the construction materials compatible with the uid(s) with which the
pump components come into contact.
The user can contact the Manufacturer or the Distributor for suggestions concerning the construction materials that
offer the best chemical compatibility; however, neither the Manufacturer nor the Distributor will be held liable for
damage (malfunction, structural ageing, leakage or indirect damage) attributable to chemical incompatibility reac-
tions between the pump materials and the uids that come into contact with them.

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1.3 INTRODUCTION TO THE MANUAL
The Original Instructions have been developed taking into account all sizes, the different supply cong-
urations of the CUBIC series Air-operated Pumps, and the steps necessary for correct installation and
safe use.
This manual is an integral part of the pump and a safety device by which the manufacturer intends to
communicate important information so that the purchaser and their personnel install, use and maintain it
in a constant state of efciency and safety.
The processed information is aimed at pursuing the highest level of safety for the environment, the
exposed people and the technicians qualied for the operations foreseen by the Manufacturer.
CONSULTATION AND PRESERVATION
The Manufacturer’s Original Instructions must always be kept in good condition and be available for con-
sultation by the Technicians qualied to service the machine in which it will be installed.
Otherwise, the Manufacturer declines any liabilities concerning:
• Incorrect installation;
• Incorrect or missing assessments of chemical compatibility with the uid to be pumped;
• Incorrect or missing assessments of classication of the potentially explosive environment and suitability for
pump use according to the afxed Certication marking and the Declaration of Conformity;
• Improper use of the pump and/or for performances other than those declared;
• Use with higher temperatures than those declared by the Manufacturer;
• Interventions and/or use of the same by untrained personnel;
• Use contrary to the Manufacturer’s safety rules;
• Serious deciencies in maintenance;
• Changes or operations not authorised by the Manufacturer;
• Use of non-original spare parts and/or unsuitable parts for the pump;
• Total or partial non-compliance with the Manufacturer’s Original Instructions.
RECIPIENTS OF THE ORIGINAL INSTRUCTIONS
This Original Instructions manual is addressed to all Operators and Technicians qualied to transport,
handle, install, maintain, and/or repair the pump.
All Operators and qualied Technicians who work on the pump must be aware of the service procedures
established by the Manufacturer, of the residual risk present and of the safety measures to be taken to
prevent dangerous situations, and any damage that may arise for exposed people and operators, as well
as for the environment and property in general. In particular, Operators must be aware of all personal
protective equipment to be used during operations that require working near potentially dangerous areas.
The contents of this manual must be strictly followed.
LIMITS OF THE ORIGINAL INSTRUCTIONS
Please note that the instruction manual cannot replace the adequate knowledge and technical prepa-
ration of the installer or maintenance technician. This Manual provides information and instructions on
installation and maintenance that do not intend to replace or modify any general or specic standard,
requirement or law concerning safety and use, which affects the machine on which the pump will be
installed.
UPDATES TO THE ORIGINAL INSTRUCTIONS
The manual reects the state-of-the-art technique at the time of marketing the pump and cannot be
considered inadequate only because it is not updated based on any and future technical achievements.
The Manufacturer reserves the right to update production and the manual without prior notice and without
obligation to update the previously issued documents.

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Capitolo 2 - Informazioni IntroduttiveIstruzioni Originali - CUBIC rev. 2022
2.4 DESCRIZIONE DELLA POMPA
2.4.1 PRINCIPIO DI FUNZIONAMENTO
Le pompe pneumatiche della serie CUBIC sono costituite da uno Scambiatore Pneumatico con un ridotto
numero di componenti, che comanda tramite un perno centrale le membrane dei due gruppi pompanti. Le
membrane solidali al perno centrale di trascinamento vengono azionate con moto alternato in due stadi
(aspirazione-mandata) e costituiscono gli elementi pompanti.
Tra le due camere di pompaggio ed i condotti di aspirazione e mandata della pompa sono alloggiate le
rispettive valvole a sfera.
Il principio di funzionamento a doppio stadio avviene simultaneamente (mentre una camera è in fase di aspira-
zione, la seconda camera è in mandata) garantendo aspirazioni negative, prevalenze elevate e il pompaggio
di uidi con alta viscosità e parti solide in sospensione (vedere 2.7 CARATTERISTICHE TECNICHE).
2.4.2 REQUISITI E CARATTERISTICHE DI INSTALLAZIONE
Le pompe pneumatiche della serie CUBIC sono autoadescanti e possono funzionare a secco e consentono
la variazione della velocità di funzionamento anche durante il servizio.
Possono essere impiegate per il ricircolo e il pompaggio di liquidi con elevata viscosità e parti solide in
sospensione (vedere 2.7 CARATTERISTICHE TECNICHE). I
l loro funzionamento è previsto per installa-
zioni in orizzontale, sopra e sotto battente.
Le tubazioni di aspirazione e mandata devono essere opportunamente dimensionate (mai inferiori ai diametri
della pompa) per garantire le portate minime ed un rendimento ottimale.
2.5 USO PREVISTO E USI IMPROPRI
2.5.1 USO PREVISTO
Le pompe pneumatiche della serie CUBIC sono state progettate e costruite per il pompaggio di liquidi e
uidi aggressivi (acidi o alcalini) con composizione chimica e temperature compatibili con i materiali di com-
posizione della pompa e viscosità apparente compresa tra 1 e 20.000 Cps a 20°C
(vedere Scheda Tecnica
Modello pompa); per viscosità superiori
a 20.000 Cps a 20°C intervengono fattori sici che richie-
dono una corretta valutazione pertanto
è sempre necessario contattare preventivamente l’Ufcio
Tecnico del Costruttore.
La massima temperatura ammessa per uidi di processo è comunque subordinata e/o declassata dal mate-
riale costruttivo della pompa e dell’impianto.
ATTENZIONE
I limiti massimi di temperatura si basano su due fattori, meccanici e corrosivi. Alcuni uidi impiegati
potranno ridurre signicativamente le temperature massime di sicurezza a causa dell’elevato tenore cor-
rosivo.
Con il superamento della massima temperatura, non è più garantita la conformità della mar-
catura ATEX apposta sulla pompa.
2.5.2 CALCOLO DELLA MASSIMA TEMPERATURA DEL FLUIDO (per Zona 1 - Zona 21)
Qui di seguito viene indicata la formula per determinare la massima temperatura di processo del uido
consentita, per le pompe
serie CUBIC in versione CONDUCT (esecuzione: II 2/2 GD c IIB T135°C) per
installazioni in
Zona 1 - Zona 21.
Classe di Temperatura
ATEX
Fattore di Calcolo
(solo per Zona 1- Zona 21)
Massima Temperatura di
Processo del Fluido
ATEX T4 - Tx 55°C = Tf 80°C
4.3.4a
4.3.4b
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 ALLACCIAMENTO DEL CIRCUITO PRODOTTO
Dopo aver eseguito il posizionamento è possibile effettuare l’allacciamento della pompa al circuito del
prodotto operando come segue:
ATTENZIONE: pericolo di reazioni chimiche all’acqua
Prima di effettuare l‘installazione della pompa per l’impiego con liquidi che reagiscono con l’acqua di rubinetto
è necessario effettuare l’apertura del circuito prodotto e provvedere all’asciugatura di tutte le superci interne.
Requisiti tubazioni impianto prodotto
• I raccordi di allacciamento devono essere dello stesso materiale della pompa con lettature cilindriche
(non impiegare lettature coniche);
• L’allacciamento alla pompa deve prevedere uno spezzone di tubo essibile con anima metallica
(è vietato l’allacciamento diretto alla pompa con tubo rigido);
• tutte le tubazioni essibili presenti devono essere rinforzate con anima metallica;
• Le tubazioni devono essere auto sostenute e non gravare in nessun modo sulla pompa;
• Corretto dimensionamento dei condotti di (aspirazione e mandata) per una corretta velocità di aspirazione;
• Valvole di intercettazione prodotto (aspirazione e mandata, che non causino perdite di carico);
• Con particolato in sospensione, installare sull’aspirazione una succhieruola correttamente dimensionata
(supercie 2,5 / 3 volte la sezione di aspirazione della pompa con feritoia massima consentita);
• Con prodotti che cristallizzano prevedere un circuito di lavaggio (con prodotti compatibili);
• Condotti prodotto puliti internamente e privi di residui solidi di lavorazione (trucioli, particolato, ecc.).
 Le pompe a membrana con aspirazione negativa sono inuenzate dai seguenti fattori:
- viscosità del uido - peso specico del uido - diametro - lunghezza e/o curve sull’aspirazione.
Posizionare la pompa il più vicino possibile al punto di prelievo (entro 2,5 m) e in tutti i casi mai superiore a 5
m verticalmente. Il diametro del tubo di aspirazione non deve mai essere inferiore a quello dell’attacco della
pompa; deve essere opportunamente dimensionato con l’aumentare della distanza o della viscosità del uido.
ATTENZIONE:pericolo di usura prematura e/o rottura membrane.
Il uido da pompare con aspirazione negativa non deve mai superare una viscosità di 5.000 Cps a 20°C
ed un peso specico di 1,4 Kg/l.
Con viscosità superiori
intervengono fattori sici che richiedono una corretta valutazione pertanto è
sempre necessario contattare preventivamente l’Ufcio Tecnico del Costruttore.
 Le pompe serie CUBIC sono fornite con le sedi per attacco prodotto con lettature Gas cilindriche. Per
le connessioni ai collettori della pompa impiegare unicamente raccordi con lettature gas cilindrico (non
coniche) dello stesso materiale della pompa.
Esempio: (pompa in PP = raccordi in PP) oppure (pompa in INOX = raccordi in INOX).
Installare sul collettore di mandata e scarico una valvola manuale di uguale diametro all’attacco della
pompa (mai più piccola) o maggiorata per aspirazioni negative o per uidi con elevata viscosità.
Se necessario, caricare due giri di nastro in PTFE sul letto ed avvitare le valvole sui collettori
della pompa (con una forza di serraggio moderata) no a garantire la tenuta.
Valvola
Valvola
PP
PP
Pompa
Pompa
PP
PP
OK
Valvola
Valvola
INOX
INOX
Pompa
Pompa
PP
PP
MAX
2,5 m
MAX 5 m
Gas cilindrica
Gas conica
OK
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CONTENTS OF THE ORIGINAL INSTRUCTIONS
The topics are covered to allow a classication of the information and the professional address to which they are
addressed so that the contained information can be immediately and directly consulted.
The manual is divided into chapters and related sections that deal with the operational topics for correct installation,
use and maintenance of the pump, with exposure divided into numbered sequences.
The pages are characterised by the following layout and contents:
• A bar has been added at the beginning of each section which, through symbols, indicates the personnel autho-
rised to operate, the prohibitions and obligations to be observed, and the Personal Protective Equipment (PPE)
that must be used;
• The residual risk that may occur during the operations is highlighted by appropriate symbols integrated with the
text.
Special symbols are used within the manual to highlight and differentiate particular information or suggestions
important for the safety and/or correct installation, maintenance or replacement of the pump.
With these measures, the Manufacturer intends to draw the attention of qualied Technicians to the CAUTIONS, WARN-
INGS, or NOTES concerning them.
For any doubts or clarications regarding the contents of this manual, do not hesitate to contact the Man-
ufacturer’s Technical Service.
Tel. +39 / 0331 074034
Fax +39 / 0331 074036
e-mail: [email protected]
website : www.debem.com
Title
SECTION
Authorised
Personnel
CAUTIONS
WARNINGS
and NOTES
Numbers
PAGE
Contents
Graphs
Operaonal
Sequences
Title
CHAPTER

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SYMBOLS AND DEFINITIONS
MACHINE OPERATOR
Identies the type of Operator in charge of the mentioned operation. This qualication requires having
obtained the necessary training and specic skills in the sector of use of the pump, in addition to full
knowledge and understanding of the information contained in the Manufacturer’s user manual.
HANDLING OPERATOR
Identies the type of Operator in charge of the mentioned operation. This qualication requires specic skills
for lifting equipment, safe methods and characteristics for slinging and handling as well as full knowledge and
understanding of the information contained in the Manufacturer’s user manual.
INSTALLER/MECHANICAL SERVICEMAN
Identies the type of Technician in charge of the mentioned operation. This qualication requires the nec-
essary training and specic skills to carry out installation and maintenance works and full knowledge and
understanding of the information contained in the manufacturer's user manual.
EXTRAORDINARY PROCEDURES
Identies the operations that can only be performed by the Manufacturer’s After-Sales Service Techni-
cians.
HAZARD SYMBOLS
They indicate, together with the text, the type of residual risk that may occur during the mentioned oper-
ation:
General danger.
Temperature hazard.
Danger of toxic and/or corrosive uids.
Explosion hazard.
Danger of crushing and shearing.
PROHIBITION SYMBOLS
They indicate, together with the text, the type of prohibition to be observed during the mentioned operation:
Prohibition to come into contact with parts of the component when it is powered, running, or hot.
Prohibition to remove the guards with the pump powered or running.
Prohibition to lubricate.

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SYMBOLS AND DEFINITIONS
OBLIGATION SYMBOLS
They indicate, together with the text, the type of personal protection to be used to carry out a certain
operation:
Obligation to disconnect the power supply before intervening.
Obligation to wear gloves with toxic and corrosive uids.
Obligation to wear protective and anti-slip shoes.
Obligation to wear aprons with toxic and corrosive uids.
Obligation to wear a face mask with toxic and corrosive uids.
Obligation to wear a respirator with toxic and corrosive uids.
CAUTION
It informs the personnel concerned that the operation described presents a residual risk of exposure to
hazards with the possibility of personal injuries, harm to health, and/or the environment if not carried out
in compliance with the requirements and procedures described and/or in the absence of the required
suitable Personal Protective Equipment (PPE).
WARNING
It informs the personnel concerned that the described operation may cause damage to the pump and/or
its components and consequent risks for the Operator, Technicians and/or the environment if not carried
out in compliance with the prescribed procedures.
NOTE
It provides signicant technical details relating to the topic and/or operation in question, the content of
which is of technical importance or a technical/legal nature.

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2
POMPE
PNEUMATICHE
serie
CUBIC
CUBIC rev. 2022
ISTRUZIONI
ORIGINALI
DEBEM s.r.l. - Via Del Bosco, 41 - Busto Arsizio (VA)ITALY
Tel.[phone] - fax [phone] - [email protected] - www.debem.com
POMPE PER L’INDUSTRIA
[email protected] - www.debem.com
CHEMICAL/ PAINTING/ PRINTING/ WATERTREATMENT/ GALVANIC/ TEXTILE / CERAMIC/ AUTOMOTIVE/ MECHANICAL/ OIL & GAS
1
1.4 DELIVERY NOTE
The CUBIC series pumps are manufactured in accordance with Directive 2006/42/EC and 2014/34/EU in
compliance with the harmonised European standards EN ISO 80079-36:2016, EN ISO 80079-37:2016.
By drafting this manual, the Manufacturer hopes that you will be able to make the most of theperformance
of CUBIC pumps, in complete safety; CUBIC pumps present no danger to the operator when used in accor-
dance with the Manufacturer's Original Instructions.
It is the duty of the Client, the Installation and Maintenance Technicians and the Qualied Operators to
take the necessary measures to ensure that access to the pump is restricted to trained and authorised
personnel and to provide adequate information and warnings about any residual risk on the machine or
system in which it will be installed, in accordance with current safety laws.
All technical values refer to 'standard' CUBIC pumps (see 2.7 TECHNICAL FEATURES) and please note
that due to a constant search for technological innovation and quality, the reported technical features of
the products may change without prior notice; the version of the Original Instructions supplied with
the pump must always be followed.
It is forbidden to commission the pump before the machine in which it is to be incorporated has been
declared compliant with the Machinery Directive 2006/42/EC provisions and any further applicable Reg-
ulations and/or Directives.
Please note that the Original Instruction Manual, the Drawings and any other technical documents deliv-
ered with the pump are condential and the property of the Manufacturer, who reserves all rights (intellec-
tual property) and PROHIBITS their reproduction (even partial, by any means) and disclosure to third parties
without their prior written approval.
1.5 GENERAL NOTES ON DELIVERY
Upon receipt of the supply, check that:
• the packaging is intact;
• the supply matches the order specications (see accompanying document);
• the pump has not been damaged.
DESCRIPTION OF THE SUPPLY POS.
Pump 1
Ofcial Manual (Original Instructions) 2
In the event of damage or missing parts, immediately inform (within 7 days of receipt) and in detail (pos-
sibly with photographs) the Manufacturer and the Carrier.

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1.6 WARRANTY
The high quality of CUBIC pumps is promptly conrmed to us by our Customers’ satisfaction. However,
should any defect appear, please contact the Manufacturer’s After-Sales Service, your Dealer or the
nearest Customer Service Centre where you will receive assistance as quickly as possible.
In any case, provide the following:
A. Identication of the pump through the Serial number on the label afxed to it;
B. Description of the detected anomaly.
All CUBIC pumps are covered by the following warranty:
1 WARRANTY TERMS
The pump is warranted for 12 months (8 hours of daily operation) starting from the delivery date (see
Accompanying Document) on all mechanical parts found to be defective, except for the parts subject to nor-
mal wear due to operation. The warranty provides for free repair of the pump or the supply of replacement
parts, provided that the manufacturer acknowledges the defect construction fault.
Repair or replacement of defective parts constitutes the full satisfaction of the warranty obligations.
2 INTERVENTION NOTIFICATION
The Purchaser must report any defect to the Manufacturer in writing within 8 days.
3 METHODS OF INTERVENTION
The warranty intervention will be exclusively carried out at the Manufacturer’s workshop after the ship-
ment or sending of the defective pump at the Purchaser’s expense.
4 EVALUATION RESERVE
Warranty shall not be extended in case of repair or replacement.
5 EVALUATION RESERVE
The defective parts remain the Manufacturer’s property the moment they are replaced by the same under
warranty. If the parts are found not to be defective, the Manufacturer reserves the right to invoice the full cost
of the parts replaced under warranty.
Purchaser responsibility
The Manufacturer will not bear the costs and risks for the shipping or transport of the defective and/or
repaired or replaced parts, including any customs charges. The warranty DOES NOT cover any indirect
damage and, in particular, any lack of production. In addition, the warranty does not cover any normal con-
sumable materials (diaphragms, balls and ball seats, etc.). The warranty does not cover parts damaged as
a consequence of incorrect installation, carelessness, neglect, incorrect maintenance, or damages due to
transportation or any other reason or event not directly linked to functional or manufacturing defects.
Warranty and liability exclusion for chemical reactions:
Since an endless variety of products and chemical compositions of the uids exists, the user is presumed
to have the best knowledge of their compatibility and chemical reaction with the pump’s construction
materials. The purchaser is strictly responsible for selecting the construction materials compati-
ble with the uid(s) with which the pump components come into contact. The user can contact the
Manufacturer or the Distributor for suggestions concerning the construction materials that offer the best
chemical compatibility; however, neither the Manufacturer nor the Distributor will be held liable for damage
(malfunction, structural ageing, leakage or indirect damage) attributable to chemical incompatibility reactions
between the pump materials and the uids that come into contact with them.
The warranty excludes all cases of tampering, improper use or incorrect applications or non-obser-
vance of the information contained in the Manufacturer’s Original instruction manual.
Any controversy falls within the jurisdiction of the Court of Busto Arsizio (VA) ITALY.

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Translation of Original Instructions CUBIC - rev. 2022
CHAPTER 2
This chapter of the manual covers topics of a preliminary nature but is especially important for the safe
and correct use of the pump; therefore, follow the instructions in the sections below.
THIS PART INCLUDES THE FOLLOWING TITLES PAGE
2.1 PUMP IDENTIFICATION 14
2.2 PUMP CONFIGURATION CODE 15
2.3 ATEX MARKING AND DEFINITION 16 - 17
2.4 PUMP DESCRIPTION 18
2.5 INTENDED USE AND IMPROPER USES 18 - 19
2.6 TECHNICAL FEATURES 20 - 21
Below is a detailed description of each topic mentioned.
INTRODUCTORY INFORMATION

Debem S.r.l.
Via Del Bosco 41
21052 Busto Arsizio (VA)
Italy - www.debem.com
Denominazione pompa pneumatica
a membrana
ANNO/YEAR 4/2022
MATR/SERIAL CAMPIONE
TIPO/TYPE ICU15P NTTPN - -
II 3G Ex h IIB T4 Gg
II 3D Ex h IIIB T135°C Dcx
Ta: 0 °C÷ +40 °C BREVETTATO MADE IN ITALY
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2.1 PUMP IDENTIFICATION
 For any communication with the Manufacturer or authorised After-Sales Centres, always specify the data
shown on the identication plate of the pump.
The identication plate contains the following data:
1. Manufacturer’s Identication;
2. Manufacturer’s address and contact numbers;
3. Pump name;
4. Type and Composition Code of the pump;
5. ATEX Marking;
6. Identication code (serial number);
7. Year of manufacture:
ATEX: STANDARD - CONDUCT version
CAUTION
The nameplate and Declaration of Conformity contain highly important data, allowing the pump’s
material composition to be recognised (4. Type and Composition Code of the pump) essential to
properly assess the chemical compatibility with the uid to be used. The data shown indicate the
ATEX execution class (see ATEX marking) for the correct assessment of compatibility with the
working environment.
IT IS FORBIDDEN to remove and/or alter the identication plate and the data it contains; removal
involves forfeiture of the warranty.
 The number of this manual is written on the cover. Make a note of the revision code and keep it so that
you can request a new copy in case of loss.

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2.2 PUMP CONFIGURATION CODE
CUBIC series Air Pumps have been designed and manufactured in different congurations (composition
materials).
The identication plate of the pump contains the product model, which also species the composition
materials of the pump, which is reported and explained below in order to determine the suitability and
compatibility of the pump with the uid to be pumped and the surrounding environment.
CAUTION: risk of damage and product leakage.
Please note that the pump must always be installed in compliance with the characteristics of the pump
composition materials shown on the Identication plate (see sections 2.2 CONFIGURATION CODE and
2.7 TECHNICAL FEATURES).
It is always necessary to check the suitability of the chemical compatibility and temperature of the
uid to be pumped (if necessary, by subjecting it to prolonged tests) before installing and using
the pump.
Example of Pump Conguration Code:
IMID- P - N T A R T -- C
PUMP MODEL PUMP
BODY
AIR SIDE DIA-
PHRAGM
FLUID SIDE
DIAPHRAGM BALLS BALL SEATS O-RING MANIFOLD VERSION
IMID - MIDGETBOX
ICU15 - CUBIC 15
P PP
E ECTFE
PC PP+CF
N NBR T PTFE G Pyrex®1
D EPDM2
A AISI 316L
T PTFE2
R PPS1
K PEEK1
P PP2
E ECTFE2
A AISI 316L2
I PE - HMW
D EPDM2
V Viton®2
N NBR2
T PTFE
X Manifold
split
Y NPT thread C = CONDUCT
for ATEX Zone 1
1 : For MIDGETBOX only; * : MIDGETBOX only mounts PTFE O-rings.
2: only for CUBIC 15;

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... * * * Ex * * * *
Temperature Class
(group II):
Maximum
surface
temperature
Class [°C]
T1 = 450
T2 = 300
T3 = 200
T4 = 135
T5 = 100
T5 = 85
Ambient reference tempera-
ture minus 5°C - 60°C.
For the class of powders,
the maximum surface tem-
perature is followed by the
letter “T”: e.g. T100°C.
Gas Group:
I = Mines (Methane)
II = Surface industries
IIA = *Propane, etc.
IIB = *Ethylene, etc.
IIC = *Hydrogen,
*Acetylene etc.
* Example of Representative trigger gases.
Powder Group:
IIIA = *Volatile fuels, etc.
IIIB = *Non-conductive powder, etc.
IIIC = *Conductive powder, etc.
*Example of Representative trigger pow-
ders.
Method of protection:
Equipment protection level:
Gb = Protection Level b for Gas
Db = Protection Level b for Powders
in compliance with EN 80079-37
CE Mark
Identication Number
of the Notied Body
Use of equipment in
potentially explosive atmosphere
Equipment
Group:
M1 = protection
very high
M2 = protection
high
1 = protection
very high
2 = protection
high
3 = protection
normal
Surface
Equipment
Group:
I = Mines
II = Surface
Type of explosive
atmosphere
(group II):
G D
Vapours Powders
of Gas
0 20
1 21
2 22
2.3 ATEX MARKING AND DEFINITION
All the CUBIC series Air-operated pumps comply with the Community Directives for the free movement of
goods applicable to them (see Declaration of Conformity).
They are produced as standard in the STANDARD version in ATEX execution II 3G Ex h IIB T4 Gc
and II 3D Ex h IIIB T135°C Dc X for use in "Zone 2- Zone 22" (in the presence of ammable gas and
dust) and in ATEX execution .
Upon specic request in the order phase, pumps can be supplied in the CONDUCT version in ATEX
execution II 2G Ex h IIB T4 Gb and II 2D Ex h IIIB T135°C Db X for use in "Zone 1 - Zone 21".
CAUTION
The Identication Plate of the pump shows the ATEX marking and the category of the equipment. Check com-
pliance with he classication of the installation “Zone” before carrying out the installation.
The equipment user is responsible for classifying their installation zone.
Below is the denition of the ATEX marking of each execution.
: safety symbol in accordance with DIN 40012 attachment A.
II 3 G/ II 3 D : surface equipment for use in areas with the presence of gases, vapours or mists in addition to clouds of
combustible dust in the air that occur occasionally during normal operation, both in external and internal
areas (Zone 2 - Zone 22) .
II 2 G/ II 2 D : surface equipment for use in areas with the presence of gases, vapours or mists in addition to clouds of
combustible dust in the air that occur occasionally during normal operation, both in external and internal
areas (Zone 1 - Zone 21).
Ex h : Protection equipment «c», or «b», or «k», in accordance with EN 80079-37.

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IIB : excluding the following gases: hydrogen, acetylene, carbon disulphide.
IIIB : excluding the following powders: conductive powder.
T4/T135°C : class of admitted temperatures. The processed uid temperature value must fall within such class range
and the user must comply with the instructions contained in the manual and with the current laws. Fur-
thermore, the user must take into account the ignition points of the gases, vapours and mists in addition
to clouds of combustible powder in the air existing in the area of use.
Gb : Protection level b for Gas according to EN 80079-36:16.
Db : Protection level b for Dust according to EN 80079-36:16.
X : The internal area of the pump is not ATEX, that is, it cannot process powders.
The Technical File is deposited with TÜV NORD CERT of Hannover.

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2.4 PUMP DESCRIPTION
 OPERATING PRINCIPLE
CUBIC Air-operated pumps consist of a Pneumatic Exchanger with a reduced number of components,
which controls the diaphragms of the two pumping units via a central pin. The diaphragms integral with
the central driving pin are operated with alternating motion in two stages (suction-delivery) and constitute
the pumping elements.
The respective ball valves are housed between the two pumping chambers and the pump delivery and
suction ducts.
The dual-stage operating principle takes place simultaneously (while a chamber is sucking, the second cham-
ber is delivering), ensuring negative suctions, high heads and pumping of uids with high viscosity and solid
parts in suspension (see 2.7 TECHNICAL FEATURES).
 INSTALLATION REQUIREMENTS AND FEATURES
CUBIC Air-operated pumps are self-priming and can run dry and allow varying the operating speed even
during service.
They can be used for the recirculation and pumping of liquids with high viscosity and solid parts in sus-
pension (see 2.7 TECHNICAL FEATURES). Their functioning is designed for horizontal positive and neg-
ative suction installations.
The suction and delivery pipes can be suitably sized (never smaller than the pump) to ensure minimum ow
rates and optimal performance.
2.5 INTENDED USE AND IMPROPER USES
 INTENDED USE
The Air-operated CUBIC pumps have been designed and constructed to pump liquids and aggressive
liquids (acid or alkaline) with chemical composition and temperatures compatible with the pump materials
and apparent viscosity of between 1 and 20,000 Cps at 20°C (see the Technical Data Sheet of the Pump
model); physical factors intervene for viscosities higher than 20,000 Cps at 20°C that require a cor-
rect evaluation, therefore, it is always necessary to contact the Manufacturer’s Technical Depart-
ment in advance.
The maximum temperature allowed for process uid depends on and/or is adjusted based on the construc-
tion material of the pump and system.
CAUTION
The maximum temperature limits are based on two factors, mechanical and corrosive. Some of the u-
ids used may signicantly reduce the maximum safety temperatures due to the high corrosive content.
Conformity with the ATEX marking afxed on the pump is no longer ensured when the maximum
temperature is exceeded.
 CALCULATION OF THE MAXIMUM FLUID TEMPERATURE (for Zone 1 - Zone 21)
Below is the formula for determining the maximum permissible uid process temperature for CUBIC series
pumps in CONDUCT version: II 2/2 GD c IIB T135°C) for installation in Zone 1 - Zone 21.
Temperature Class
ATEX
Calculation Factor
(only for Zone 1- Zone 21)
Maximum temperature of
Fluid process
ATEX T4 - Tx 55°C = Tf 80°C

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 rev.
 TEMPERATURE CLASS PUMPS TO BE INSTALLEDIN EXPLOSIVE ENVIRONMENT (Zone 1):
The temperature class corresponding to the protection against the risk of explosion of the pumps designed
for use in Zone 1 with the presence of explosive atmospheres is T135°C (T4); all the data for calculating
the maximum uid temperature under the operating conditions are shown below.
NOTE
The equipment’s maximum temperature has been determined with no powder deposits on the external
and internal surfaces.
Denition of the Calculation Data (Zone 1):
T4 = ATEX temperature class 135°C;
Ta = maximum ambient temperature 40°C;
Tl = maximum temperature for dry use of the pump in the workplace (50°C);
Δs = safety factor (5°C);
Tx = calculation factor (Tl + Δs) only for Zone 1;
Tf = maximum allowed uid processing temperature.
CAUTION
In consideration of the admitted ambient temperature variation range in Zone 1, uid service temperature
values higher than those indicated above will not permit compliance to the corresponding temperature
class, T4 (135°C).
Where the user presumes that the temperature limits set forth on the product marking and in this
manual may be exceeded, a detection and protective device must be installed on the system to
prevent the maximum allowed temperature from being reached.
NOTE
The user must consider the ratio between the pump’s maximum surface temperature indicated on the
marking and the minimum ignition temperature of the layers and clouds of powder.
 IMPROPER USES
Any use of the CUBIC series pump other than that described above and specied in Section 2.7 TECHNICAL
FEATURES is considered improper and therefore prohibited by the manufacturer DEBEM .
In particular, it is prohibited to use the CUBIC series pump for:
• production of vacuum;
• operation as a shut-off valve, as a check valve (non-return valve), or as a metering valve;
• pump operation with powders of all types and kinds (ammable and non);
• use with uids that are chemically incompatible with the materials of construction;
• operation with air pressures, process temperatures and/or functional characteristics that are incompatible
with the Technical Data of the pump and/or the Certication marking afxed;
• pump operation in potentially explosive environments that are not classied and/or compatible with
the type of execution of the pump (see Certication marking afxed and Declaration of Conformity).
• unsuitable pump use (incorrect choice of materials and installations) to operate in the presence of stress
corrosion cracking phenomena;
• operation with alimentary or pharmaceutical uids.
CAUTION
The risks associated with the use of the pumps under the exact conditions outlined in the Manufacturer’s
use and maintenance manual have been analysed, whilst the analysis of the risks associated with the
interface with other system components must be carried out by the installer/user.
Use of the pump that does not comply with the Manufacturer’s Original Instructions is prohibited
and invalidates the Warranty and the safety and explosion protection requirements.

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INDUSTRIAL PUMPS
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2.6 TECHNICAL FEATURES
The technical performance data of the CUBIC series pumps refer to standard executions. The 'MAX ow rate'
values refer to pumping water at 20°C with an immersed suction pipe with a head of 50 cm (see gure 1). The
“Suction Capacity” values are measured with a vacuum gauge.
NOTE
the declared capacity of dry negative suction refers to the intake of uids with a viscosity and specic weight
equal to 1. The performance and duration of the pump’s diaphragms depend on the following factors:
• the uid’s viscosity and specic weight;
• the length and diameter of the suction pipe and/or presence of suction bends on the product circuit;
• presence of abrasive solid particles.
NEGATIVE SUCTION: with uids max up to 5,000 Cps at 20°C and a maximum specic weight of 1.4 Kg/l.
POSITIVE SUCTION: with uids max up to 20,000 Cps at 20°C (see Pump model).
With higher viscosities, physical factors intervene that require a correct evaluation; therefore, it is always
necessary to contact the Manufacturer’s Technical Department in advance.
The following tables show the Technical Data, the maximum overall dimensions, the clamping points and the
weights; for the dimensional values and the specic technical data of the supply, see the Technical Data
Sheets of the specic model.
TECHNICAL DATA unit of
measurement MIDGETBOX CUBIC 15
Sucon/delivery ngs inches  
Air ng inches  
Air pressure (MIN-MAX) bar  
Solids passing MAX   
Dry sucon capacity
   
Max head (   
MAX water
   
MAX uid
temperature

   
   
MAX uid
temperature

   
   
Weight
(empty)
PP   
   
   
Noise    
g. 1
NEGATIVE SUCTION
Max 5.000 Cps a 20°C
(specic weight of 1.4 Kg/l)
POSITIVE SUCTION
Max 20,000 Cps a 20°C
20°C
0.5 m