omi ED Series User manual

s.r.l. ED series
Cod. 710.0103.01.00 Rev2A – 11.2012
- EN -
DIRECT EXPANSION COMPRESSED AIR DRYERS
Operators Manual
- IT -
ESSICCATORI D’ARIA COMPRESSA AD ESPANSIONE DIRETTA
Manuale dell'Operatore
- ES -
SECADORES A EXPANSIÓN DIRECTA
Manual del Operador
- DE -
DRUCKLUFT KÄLTETROCKNER
Bedienerhandbuch
- FR -
SECHEUR D’AIR A EXPANSION DIRECTE
Manuel des Opérateurs
- RU -
ОСУШИТЕЛИ СЖАТОГО ВОЗДУХА РАСШИРИТЕЛЬНОГО ТИПА
Руководство по эксплуатации
Models / Modelli / Modelos / Modelle / Modèles / Модели
ED 1300
ED 1700
ED 2200
ED 2700
ED 3600
ED 4200
ED 5300
ED 6000
ED 6600
According to PED 97/23/CE
Secondo la direttiva PED 97/23/CE
Segun directiva PED 97/23/CE
Gemäß PED 97/23/CE
Selon la directive PED 97/23/CE
Всоответствии сДирективой PED 97/23/CE

1 - 113

4 - 113
- EN -
ATTENTION!
There is a variable delay before the dryer will start after the dryer is turned on, in order to warm up compressor oil.
- IT -
ATTENZIONE!
Allo scopo di riscaldare l’olio del compressore c'è un ritardo variabile prima che l'essiccatore entri in funzione dal momento
dell'accensione.
- ES -
ATENCIÓN!
Por calentar el aceite en el compresor hay un retardo variable de que el secador entre en funcionamiento desde el
momento del encendido.
- DE -
ACHTUNG!
Nach dem Einschalten startet der Trockner mit einer unbestimmbaren Verzögerung. Diese wird benötigt, um das
Kompressoröl zu erwärmen.
- FR -
ATTENTION!
Pour chauffer l'huile dans le compresseur, qu’il y a un délai variable avant le démarrage du séchoir une fois qu’il est mis en
marche.
- RU -
ВНИМАНИЕ!
Есть переменная задержка перед сушилка работает сзажиганием для нагрева масла вкомпрессоре.

5 - 113

Cod. 710.0103.01.00 Rev2A – 11.2012
1 - 111
- EN -
CONTENTS
1. GENERAL INFORMATION 4
1.1 Functional description 4
1.2 Safe use of the dryer 4
2. SAFETY INFORMATION 5
2.1 General safety instruction 5
2.2 Equipment nameplate values 5
2.3 Information about remaining
risks of the equipment 5
3. INSTALLATION 6
3.1 Acceptance, unpacking and
handling 6
3.2 Installation site 6
3.3 Installation 6
4. START-UP 7
5. MAINTENANCE 7
5.1 Weekly 7
5.2 Monthly 7
5.3 After 6 months 7
6. CONTROL PANEL 7
6.1 Icons description 8
6.2 Signalling Led description 8
6.3 Buttons function 8
6.4 Functions menu 9
6.5 Alarms 9
6.6 Programming 12
6.7 Set point display 14
6.8 Suggested maintenance function 14
6.9 Black out 15
6.10 Remote controls 15
7. TROUBLESHOOTING 16
8. CONDENSATE DRAIN 16
8.1 Drain valve maintenance 16
8.2 No loss condensate drain 16
8.3 Maintenance and malfunctioning
treatment 17
9. DECOMMISSIONING 17
10. SAFETY REQUIREMENTS 17
11. DAILY REGISTER 17
ATTACHMENTS TO THIS MANUAL
A) Refrigerant circuit 96
B) Electric circuit diagram 98
C) Technical data sheet 106
D) Correction factors 108
E) Dryer dimensions 109
F) Basic spare parts 110
- IT -
INDICE
1. INFORMAZIONI GENERALI 19
1.1 Descrizione funzionale 19
1.2 Uso sicuro dell’ essiccatore 19
2. SICUREZZA 20
2.1 Avvertenze generali di sicurezza 20
2.2 Dati di targa dell’impianto 20
2.3 Informazioni sui rischi residui
dell’apparecchiatura 20
3. INSTALLAZIONE 21
3.1 Accettazione e trasporto 21
3.2 Luogo di installazione 21
3.3 Installazione 21
4. AVVIAMENTO 22
5. MANUTENZIONE 22
5.1 Ogni settimana 22
5.2 Ogni mese 22
5.3 Ogni 6 mesi 22
6. PANNELLO DI CONTROLLO 22
6.1 Descrizione icone 23
6.2 Descrizione led di segnalazione 23
6.3 Funzione dei tasti 23
6.4 Menù funzioni 24
6.5 Gestione allarmi 24
6.6 Programmazione 27
6.7 Visualizzazione del set point 29
6.8 Manutenzione programmata 29
6.9 Mancanza di tensione 30
6.10 Controlli remoti 30
7. RICERCA GUASTI 31
8. SCARICATORE DI CONDENSA 31
8.1 Manutenzione valvola di scarico 31
8.2 No loss condensate drain 31
8.3 Manutenzione e trattamento
malfunzionamenti 32
9. SMANTELLAMENTO 32
10. MISURE DI PROTEZIONE 32
11. REGISTRO GIORNALIERO 32
ALLEGATI A QUESTO MANUALE
A) Circuito aria e frigo 96
B) Schema elettrico 98
C) Schede tecniche 106
D) Fattori di correzione 108
E) Dimensioni dell'essiccatore 109
F) Parti di ricambio fondamentali 110
- E -
ÍNDICE
1. INFORMACIONES GENERALES 34
1.1 Descripción funcional 34
1.2 Uso seguro de la máquina 34
2. SEGURIDAD 35
2.1 Advertencias generales de
seguridad 35
2.2 Datos de matrícula del equipo 35
2.3 Información sobre los riesgos
residuales del equipo 35
3. INSTALACIÓN 36
3.1 Aceptación y transporte 36
3.2 Lugar de instalación 36
3.3 Instalación 36
4. PUESTA EN MARCHA 37
5. MANTENIMIENTO 37
5.1 Semanal 37
5.2 Mensual 37
5.3 Semestral 37
6. PANNEL DE CONTROL 37
6.1 Descripción de los iconos 38
6.2 Descripción de los indicadores
LED de señalización 38
6.3 Función de los botones 38
6.4 Menú de funciones 39
6.5 Gestión de alarmas 39
6.6 Programación 42
6.7 Visualización del valor de set point 44
6.8 Mantenimiento programado 44
6.9 Falta de tensión 45
6.10 Controles remotos 45
7. SOLUCIÓN DE PROBLEMAS 46
8. DESCARGADOR DE CONDENSADO 46
8.1 Mantenimiento de la válvula
de descarga 46
8.2 No loss condensate drain 46
8.3 Mantenimiento y tratamiento
de fallas 47
9. DESMANTELAMIENTO 47
10. MEDIDAS DE PROTECCIÓN 47
11. REGISTRO DIARIO 47
ADJUNTOS A ESTE MANUAL
A) Circuitos de aire y refrigerante 96
B) Esquema eléctrico 98
C) Fichas técnicas 106
D) Factores de corrección 108
E) Dimensiones del secador 109
F) Pièces De Rechange Essentielles 110

Cod. 710.0103.01.00 Rev2A – 11.2012
2 - 111
- DE -
INHALTSVERZEICHNIS
1. ALLGEMEINE INFORMATIONEN 49
1.1 Funktionsbeschreibung 49
1.2 Sichere verwendung des trockners 49
2. SICHERHEITSINFORMATIONEN 50
2.1 Allgemeine Sicherheitshinweise 50
2.2 Maschinenschilddaten 50
2.3 Informationen über
Rückstandsrisiken des Apparates 50
3. INSTALLIERUNG 51
3.1 Abnahme und transport 51
3.2 Anforderungen an den
aufstellungsort 51
3.3 Installierung 51
4. ANLAUF 52
5. WARTUNG 52
5.1 Wöchentlich 52
5.2 Monatlich 52
5.3 Halbjährlich 52
6. BEDIENUNGSTAFEL 52
6.1 Symbolerläuterung 53
6.2 LED-Signalerläuterung 53
6.3 Tastenfunktion 53
6.4 Menüfunktionen 54
6.5 Alarmsteuerung 54
6.6 Programmierung 57
6.7 Setpointanzeige 59
6.8 Programmierte wartung 59
6.9 Spannungsausfall 60
6.10 Fernsteuerung 60
7. STÖRUNGSSUCHE 61
8. KONDENSATABLASSER 61
8.1 Wartung 61
8.2 No loss condensate drain 62
8.3 Wartung – fehlfunktionbeseitigung 62
9. ENTSORGUNG 62
10. SCHUTZMASSNAHMEN 62
11. TAGESREGISTER 62
ANLAGEN ZU DIESEM HANDBUCH
A) Luft- und Kühlungskreislauf 96
B) Stromlaufpläne 98
C) Technische Zeichnungen 106
D) Korrekturfaktoren 108
E) Abmessungen des Trockners 109
F) Ersatzteile 110
- FR -
TABLE DES MATIERES
1. INFORMATIONS GENERALES 64
1.1 Description fonctionnelle 64
1.2 Utilisation du sechoir en
toute securite 64
2. SÉCURITÉ 65
2.1 Avertissements généraux
de sécurité 65
2.2 Données de la plaque
de l’installation 65
2.3 Informations sur les risques
résiduels de l’appareil 65
3. INSTALLATION 66
3.1 Reception et transport 66
3.2 Lieu d'installation 66
3.3 Installation 66
4. DÉMARRAGE 67
5. ENTRETIEN 67
5.1 Toutes les semaines 67
5.2 Tous les mois 67
5.3 Tous les 6 mois 67
6. PANNEAU DE COMMANDE 67
6.1 Description des icônes 68
6.2 Description des DELS de
signalisation 68
6.3 Fonctions des touches 68
6.4 Menu fonctions 69
6.5 Gestion des alarmes 69
6.6 Programmation 72
6.7 Affichage du point de consigne 74
6.8 Entretien programmée 74
6.9 Absence de tension 75
6.10 Contrôles à distance 75
7. RECHERCHE DES PANNES 76
8. PURGE DE CONDENSANTS 76
8.1 Entretien de purge de condensants 76
8.2 No loss condensate drain 77
8.3 Entretien et remedes aux
dysfonctionnements 77
9. DEMANTELEMENT 77
10. DISPOSITIONS DE PROTECTION 77
11. REGISTRE QUOTIDIEN 77
ANNEXES AU MANUEL
A) Circuit frigorifique 96
B) Schéma électrique 98
C) Caractéristiques techniques 106
D) Facteurs de correction 108
E) Dimensions du sécheur 109
F) Pièces de rechange essentielles 110
- RU -
СОДЕРЖАНИЕ
1. О ЩАЯ ИНФОРМАЦИЯ 79
1.1 Функциональное описание 79
1.2 Техника безопасности при
использовании машины 79
2. ЕЗОПАСНОСТЬ 80
2.1 Основные правила техники
безопасности 80
2.2 Данные, указываемые на
фирменной табличке 80
2.3 Сведения об остаточных рисках,
связанных сэксплуатацией
оборудования 80
3. УСТАНОВКА 81
3.1 Приемка итранспортировка 81
3.2 Место установки 81
3.3 Установка 81
4. ПУСК 82
5. ТЕХНИЧЕСКОЕ О СЛУЖИВАНИЕ 82
5.1 Еженедельно 82
5.2 Ежемесячно 82
5.3 Через каждые 6 месяцев 82
6. ПАНЕЛЬ УПРАВЛЕНИЯ 82
6.1 Описание пиктограмм 83
6.2 Значение сигналов, выводимых
на светодиоды 83
6.3 Назначение клавиш 83
6.4 Меню функций 84
6.5 аварийная сигнализация 84
6.6 Программирование 87
6.7 Отображение заданного
значения величины 90
6.8 Плановое техническое
обслуживание 90
6.9 Внезапное исчезновение
напряжения электропитания 90
6.10 Дистанционное управление 90
7. ПОИСК ИУСТРАНЕНИЕ
НЕИСПРАВНОСТЕЙ 91
8. КОНДЕНСАТООТВОДЧИК С
ЭЛЕКТРОННЫМ УПРАВЛЕНИЕМ 92
8.1 Техническое обслуживание 92
8.2 No loss condensate drain 92
8.3 Техобслуживание иустранение
неисправностей 93
9. РАЗ ОРКА 93
10. МЕРЫ ЗАЩИТЫ 93
11. ЖУРНАЛ ЕЖЕДНЕВНОГО УЧЕТА
РА ОТЫ УСТАНОВКИ 93
ПРИЛОЖЕНИЯ КНАСТОЯЩЕМУ
РУКОВОДСТВУ
A) Воздушный иохлаждающий
Контуры 96
B) Электрическая схема 98
C) Таблица технических
Характеристик 106
D) Факторы исправления 108
E) Измерения сушилки 109
F) Основные Запасные Части 110

Cod. 710.0103.01.00 Rev2A – 11.2012 3 - 111
- EN -
Introduction
This manual is an integral part of the dryer you bought, and must remain with the machine even if this will be resold.
It is highly recommended that the qualified*personnel for installation maintenance and/or control will fully comply with the contents of
this manual and the prevention and safety rules in force in the country where the system will be used. In this way, not only the usage of
the machine will be rational, but also the service will result cost effective.
In case your dryer will present any kind of problem, please contact your local authorized OMI distributor.
Please note that, when necessary, the use of original spare parts will ensure efficiency and long duration to your dryer.
Due to the continuous technological evolution, OMI reserves the right to modify the specifications contained in this manual without
giving previous notice.
Symbols and labels used in the manual and on the dryer
or or or Air inlet. or or or Air outlet.
Read the Operators manual before attempt to start
up the machine and to perform any service
operation on the dryer.
Pay particular attention to components or systems
under pressure.
Pay particular attention to the indications preceded
by these symbols. Pay particular attention to hot surfaces.
Installation, maintenance, and/or control operations
preceded by these symbols must be performed
exclusively by qualified personnel*. Pay particular attention to the risk of electric shock.
Condensate drain point. Rotation direction of the fan.
Pay particular attention to the risk of moving parts
Attention: Before performing any
maintenance operation on this machine, do
not forget to disconnect the electric supply,
to completely discharge air pressure, and
to refer to the Operators manual
- Turn main power switch on position 1.
- Push the ON/OFF button.
- There is a variable delay before the dryer will start after the dryer is turned on, in order to warm
up compressor oil.
* Qualified personnel must be trained and certified in accordance with local laws and regulations.
Warranty
This product is supplied after being regularly tested. It is guaranteed for 12 months from the delivery date. This warranty applies
provided the customer has complied with contract and administrative rules and the machine is installed and used under the instructions
of this manual. The manufacturer agrees in fixing or replacing all parts proved to be worn and faulty at the factory free of charge. Final
decision is left to our “authorized service” technicians. Labor costs are not covered by this warranty and the customer will therefore be
charged with the relative amount. Any liability for direct or indirect damages caused to people due to misuse and improper maintenance
of this product is not included in this warranty. It is limited to operation and manufacture defects. All parts subject to wear due to their
specific use are not covered by this warranty. All transport, on-site, disassembly and reassembly costs due to our technician’s
intervention are not covered by this warranty and the customer will therefore be charged with the relative amount if defects are not
under our liability.

Cod. 710.0103.01.00 Rev2A – 11.2012 4 - 111
1. GENERAL INFORMATION
1.1 Functional description
OMI refrigerated air dryers remove moisture from compressed air. Moisture is detrimental to pneumatically operated appliances,
controls, instruments, machinery and tools.
Compressed air enters the patented aluminum heat exchanger where it is cooled down to the dew point temperature in two different
stages: In the first air/air sector compressed inlet air is cooled thanks to the colder compressed air coming out counterflow from the
condensate separator. In the second refrigerant / air sector, compressed air temperature is further lowered to the dew point
temperature. During this two stages almost all the oil and water vapours contained in compressed air are condensed to liquid and
successively be separated from the compressed air in the condensate separator and drained out by the automatic drain. At this point
the obtained cold air re-enters counterflow the initial air / air exchanger and it is reheated by the inlet hot air with the consequence of
energy recovering and also reduction of the relative humidity contained in the outflowing air.
This dryer can be easily installed into various pneumatic systems in which dry air is required or desired. Please refer to Principles of
Operation for complete operating details.
The dryer comes provided with all the control, safety and adjustment devices, therefore no auxiliary devices are needed.
A system overload not exceeding the maximum operative limits can worsen the operational performance of the dryer (high
dew point), but it will not affect its safety.
The electric diagram (attachment B) shows the minimum protection degree IP 42.
Improper grounding can result in electrical shock and can cause severe injury or death.
This product must be connected to a grounded, metallic, permanent wiring system or an equipment-grounding terminal or
lead on the product.
All grounding must be performed by a qualified electrician and comply with national and local electrical codes.
In the event of an electrical short circuit, grounding reduces the risk of electric shock by providing an escape wire for the
electric current.
Ground must be established with a bare grounding wire sized according to the voltage and minimum branch circuit
requirements.
Ensure good bare metal contact at all grounding connection points, and ensure all connections are clean and tight.
Check grounding connections after initial installation and periodically thereafter to ensure good contact and continuity has
been maintained.
Check with a qualified electrician or service technician if the grounding instructions are not completely understood, or if in
doubt as to whether the product is properly grounded.
1.2 Use of the machine in safe conditions
This system has been designed and manufactured in compliance with the European safety directive in force and UL/ULC, therefore
any installation, use and maintenance operations must be performed respecting the instructions contained in this manual.
Because an air dryer is pressurized and contains rotating parts, the same precautions should be observed as with any piece of
machinery of this type where carelessness in operation or maintenance could be hazardous to personnel. In addition to obvious safety
rules that should be followed with this type of machinery, safety precautions as listed below must be observed.
1. Only qualified personnel shall be permitted to adjust, perform maintenance or repair this air dryer.
2. Read all instructions completely before operating unit.
3. Pull main electrical disconnect switch and disconnect any separate control lines, if used, before attempting to work
or perform maintenance on the unit.
4. Do not attempt to service any part while machine is in an operational mode.
5. Do not attempt to remove any parts without first relieving the entire air system of pressure.
6. Do not attempt to remove any part of the refrigeration system without removing and containing refrigerant in
accordance with the EPA and local regulations.
7. Do not operate the dryer at pressures in excess of its rating.
8. Do not operate the dryer without guards, shields and screen in place.
9. Inspect unit daily to observe and correct any unsafe operating conditions.

Cod. 710.0103.01.00 Rev2A – 11.2012 5 - 111
2.0 SAFETY INFORMATION
2.1 General safety instruction
SAFETY INFORMATION
This dryer has been designed and manufactured in accordance with the European safety directive
2006/42/CE Machine Directive
2006/95/CE Low tension Directive
2004/108/CE Electromagnetical compatibility Directive
97/23/CE PED Directive
According to PED Directive, this plant is supplied with safety devices on the frigorific circuit, calibrated according to the
under mentioned specifications.
The working life of such equipments is expected between 10 and 20 years.
Any installation, use and maintenance operations must be done according to the instructions contained in this manual and in
accordance to the national rules.
Any cleaning/maintenance operation which needs access to the dryer must be carried out by qualified and export personnel
who must be aware of all necessary precautions.
The machine has been designed and manufactured to be used in conformity to the following specifications.
In case of different use of the machine or not in conformity to this manual, the Manufacturer can’t be accused of any
responsibility.
2.2 Equipment nameplate values
(Nameplate values extracted from Calculation data sheet)
Fluid Circuit Side Press. Max. Amm. Safety devices set Work. Temp Design Temp
MAWP
"PS" (bar rel) (bar rel) (°C) (°C)
Freon HFC
(R507, R407c, R134a, R404a) R134a R407c
R404a,
R507 R134a R407c R407c
R404a,
R507
Low press. -LP 20 20 18* 18* 18* min -10° min -15°
High Press. -HP 28 30,8 18* 27,9* 29* max +100° max +100°
Compressed air (Dryers) Compress. Air Side min 0
(Customer care)
min 0° min 0°
max. 13(aluminium) max +60° max +60°
max. 16 (copper)
Refrigerant Liquid (Chiller) Liquid side min 0 (Customer care) min -10° min -15°
max 8 max +45° max. +45°
Ambient air Ventilation side Atm. ( Not Appl.) min 5° min -15°
max +45° max. +45°
* - Safety Pressure switch Cat IV PED, Manual reset
Welding Joints Coefficient z 0,7 (Table 5.6-1)
Tickness allowance c 0,1 mm ( Per rame - For copper )
(Not required for surfaces in contact with freon - EN 14276-1) c 1 mm ( Per acciaio - For carbon steel )
Manufacturer design code 717.0012.01.00 Rev.08
Essential Safety Requirements ON10.0010.02 Rev.01
Manufacturer Working Procedure PO 08.2 Rev.01
Assembly classification according PED 97/23 Cat. II
Evaluation Module according PED 97/23 Mod. A1
PED Notified Body number 0474
2.3 Information about remaining risks of the equipment
Fire:
This equipment, in accordance to EN-378-2, isn’t supplied with freon drain safety valve.
In case of fire it is preferable to use fire extinguishers or extinction systems basically composed of powder or foam or carbon dioxide: it is possible to
cool the equipment thanks to nebulized water.
Avoid the massive use of water because, in case of freon gas leak, the chemical reaction can cause caustic effects, even if small.
In any case it is necessary to cool down the ambient and/or the equipment’s temperature and before any intervention wait until the temperature has
been reduced.
Therefore it is preferable to insert this equipment into the Fire Prevention and Factory Safety Plan.
Arrange adequate actions capable to prevent and fight the possible risk.
Dispersion of freon gas in the ambient:
the refrigerant means is toxic only if inhaled at high concentration: it is necessary to provide an adequate ventilation in the room where the equipment
is installed.
In any case check the scheme showing the values and the risk sentences.
Excessive pressure on the compressed air side:
this equipment isn’t supplied with safety devices on the compressed air side.
The safety devices on the compressed air side must be carried out by the installer.
Such devices will have to be carried out according to the applicable National Norms and to the limits mentioned in this Manual.
Ozone layer deterioration:
The adoption of HFC freon reduce to the minimum ozone layer deterioration and greenhouse effect.

Cod. 710.0103.01.00 Rev2A – 11.2012 6 - 111
3.0 INSTALLATION
3.1 Acceptance, unpacking and handling
Upon receiving your OMI air dryer, please inspect the unit closely. If rough handling is detected, please note it on your delivery receipt,
especially if the dryer will not be uncrated immediately. Obtaining the delivery person's signed agreement to any noted damages will
facilitate any insurance claims by the customer.
It is mandatory to keep the dryer always in vertical position, as indicated by the symbols present on the packaging. For handling, use
devices having sufficient capacity for the weight of the machine.
Remove the packaging after having positioned the dryer in the installation site. Dispose the various packaging materials in compliance
with the relevant rules locally in force.
If not in use, the dryer can be stored in its packaging in a dust free and protected site between 32°F (0°C) and 120 °F (50 °C), and a
specific humidity not exceeding 90 %. Should the stocking time exceed 12 months, please contact your local OMI authorized distributor.
Under no circumstances should any person attempt to lift heavy objects without proper lifting equipment (i.e., crane, hoist, slings or fork
truck). Lifting any unit without proper lifting equipment, may cause serious injury. Use fork lift channels where provided.
3.2 Installation site
While preparing a proper site for the installation of the dryer, please take into account the following requirements
The machine must be protected from atmospheric agents and not directly exposed to sun light.
A seating base flat and capable to hold the weight of the machine.
Ambient temperature complying with the nominal data of the dryer.
The dryer should be located in a clean area, without forced air draft that can affect the fan control system.
Make sure to leave sufficient clearance (20 inches, 500 mm) around the dryer in order to allow an adequate
cooling of the machine and for maintenance and/or control operations.
The incoming air must be free from smoke or flammable vapours which could lead to explosion or fire risks.
3.3 Installation
Before attempting any installation operation, make sure that
No parts of the air system are under pressure.
No parts of the system are electrically powered.
Tubing to be connected to the dryer are free of impurities.
All interconnecting piping has been tightened.
After having verified the points listed above, you can proceed to the installation of the machine.
1. Connect the dryer to the compressed air lines. If not already existing, we suggest to install a by-pass allowing to
isolate the machine from the plant, thus to facilitate eventual maintenance operations.
2. Perform the electrical connection in accordance with any local laws and regulations after reviewing the dryer
electrical specifications and wiring diagram.
3. Check the condensate drainage assembly, and connect the drain flexible hose to the draining line, keeping in
mind that the condensate separated by the dryer may contain oil, therefore, in order to dispose of it in
compliance with the local rules in force, we suggest installing a water-oil separator having adequate
capacity.
4. Power the dryer after having checked that the nominal voltage and line frequency are constant and matching the
nominal values of the machine. The user must provide the installation with an adequate line protection
and a ground terminal complying with the electrical rules locally in force.
In order to optimise the use of the dryer, we suggest to place it in such a way that all the control instruments of the
machine will result easily visible.
A suitably sized prefilter must be installed before the dryer. Failure to install and maintain a proper prefilter will
void the dryer warranty. The rating for this filter must be at least 10 micron.

Cod. 710.0103.01.00 Rev2A – 11.2012 7 - 111
4.0 START-UP
•Make sure that intake and outtake valves are closed, switch on the devices (1S1).
•TO START THE DRYER IT IS NECESSARY TO PRESS AND HOLD THE ON/OFF BUTTON FOR AT LEAST FOR 3 SECONDS
•THERE IS A DELAY BEFORE THE DRYER WILL START AFTER THE DRYER IS TURNED ON, IN ORDER TO WARM UP COMPRESSOR OIL.
•IF THE UNIT FAILS TO START MAKE SURE THAT PHASES ARE CONNECTED CORRECTLY.
•Allow some minutes for the dryer to run at full speed, i.e. until the displayed value on the temperature display is within the field of good operation
(about 3°C).
•Now open the outlet air valve and then open gradually the intake air valve. In this way, the plant is gradually pressurized.
•If the plant is overloaded over the max. use limits (see technical data), the dryer's performance will be remarkably lower but safety will not be in
danger.
5.0 MAINTENANCE
5.1 Weekly
Check visually if the condensate is properly drained.
5.2 Monthly
Clean prefilter to remove any possible dirt on the inner filtering element.
Perform the following after stopping the compressed air flow by closing the intake and outtake valves.
5.3 After 6 months
Isolate the machine before performing the following.
According to the room temperature quality and when summertime begins, clean the condenser with a low pressure air jet and clean the fins of the unit to
remove possible scales or deposits the might decrease its performance.
Check that the compressor power consumption values fall within the range detailed on the machine plate (see compressor product label).
6.0 CONTROL PANEL
The machines in this series are equipped with an electronic controller for the adjustment of the operating parameters. Adjustments can
be made using the digital panel, located on the dryer’s front panel. Please note that the SET POINT & other control parameters
have been optimized and factory set. Although the set point value can be displayed, the ability to alter these factory settings
via the digital interface on the front panel has been removed to eliminate the possibility of unit damage caused by improper
settings.
fig.1 - Control panel
Normal conditions read - out
At normal operating conditions, if no alarms are present, the upper display shows the DEW
POINT temperature, the lower display shows the AMBIENT TEMPERATURE.
Led (dryer ON) is lighting.
refrigerant compressor icon (refrig. compressor ON) is lighting.

Cod. 710.0103.01.00 Rev2A – 11.2012 8 - 111
6.1 Icons description
ICON DESCRIPTION
Generic Alarm
High / Low refrigerant discharge pressure Alarm (HP/LP)
Icon ON shows “Celsius degrees”
Icon OFF shows “Fahrenheit degrees”
Refrigerant compressor energized
(Blinking when start refrigerant compressor delay activated)
Suggested Maintenance
(Icon connected to CO14 parameter)
“Functions menu” activated
Icon connected to time parameters
(ON when in Functions or Programmation area)
6.2 Signalling Led description
SIMBOL STATUS DESCRIPTION BUTTON
ON Dryer energized
ON Condensate drain energie
(Not used with no loss discharger)
6.3 Buttons function
Single buttons function
SYMBOL DESCRIPTION LED /
ICON
Activates or deactivates unit operation when pressed for 3 seconds (ON/OFF).
When deactivated, the OFF message is displayed.
When the dryer is switched off using this button all digital outputs are disconnected.
Allows entry the “Functions Menu”
Pressed during normal operation displays the compressor oil temperature.
When pressed during programming mode, it scrolls the parameters list or increases the displayed value.
Pressed during normal operating displays the refrigerant circuit suction pressure.
When pressed during programming mode, it scrolls the parameters list or decreases the displayed value.
Pushed and released shows on display the SET POINT value.
In programming mode selects a parameter or confirms a value.
When pressed for more than 3 seconds during the normal operating, it performs a test of the condensate
discharge valve. (Not used with no loss discharger)
Buttons combinations
Enters the PARAMETER PROGRAMMING MENU
Exits the PARAMETER PROGRAMMING MENU

Cod. 710.0103.01.00 Rev2A – 11.2012 9 - 111
6.4 Functions menu
Press and release button to enter the Functions menu.
When in “Functions Menu” the icon is illuminated.
Press and release to close the Functions menu or wait 15 sec. (Automatic close).
Functions Menu allows to:
1. Show and reset the active alarms (“ALrM” function).
2. Show or reset the ALARM LOG (“ALOG” function).
3. Show and reset the time running hour counters of refrigerant compressor (“C1Hr” function).
4. Upload the parameters from the controller to the Hot Key (“UPL” function).
6.5 Alarms
The controller is able to recognize particular types of faults in the drying circuit. When this occurs, the display shows the required
information necessary to find out the cause.
The controller is programmed to recognize and display prealarms and alarms.
Alarm conditions read - out
When a fault is detected the Lower display shows a blinking alarm label and the correspondent
icon alternating with the temperature. The Upper display always shows the Dew Point
temperature.
Buzzer active.
Silencing the Buzzer (if present)
When an alarm is activated, the electronic board will emit an acoustic signal (buzzer).
The buzzer can be stopped in two ways:
- Automatically: when the alarm condition is recovered.
- Manually: push and release one of the keys of the controller; the buzzer is stopped even if the alarm is still active.
6.5.1 Prealarms and Alarms description
Prealarms show conditions of critical operation of the dryer, they will not stop the refrigerant compressor.
When this situation occurs it’s suggested to make the required maintenance to eliminate the prealarm condition.
Alarms means conditions of critical operation of the dryer for a determinate preset delay, normally they are preceded by a prealarm
signalling. Alarms stop the refrigerant compressor, except Pb2, Pb3 and Pb4.
When this situation occurs it’s necessary to make maintenance for recover the fault condition.
6.5.2 For display and reset an alarm
1. Enter the “FUNCTIONS MENU” ( button).
2. Find “ALrM” using the buttons and .
3. Push button to display the alarms:
-Lower display will show the code of the active alarm.
-Upper display will show “rSt” label if the alarm can be resetted or “NO” label if it is not resettable.
-To reset an alarm push button when “rSt” label is lighted (at reset done the controller automatically skips to next alarm).
-Scroll all alarms by using and buttons.
4. Quit by pushing button or wait for automatic quit.
Resettable alarms
An alarm is defined resettable (rSt) when the generating cause disappears. These alarms can be directly resetted by the controller
proceeding as follows:
-Display the alarms following the above instructions, then push button when “rSt” label is lighted (at reset done the
controller automatically skips to next alarm, if present).
-Quit by pushing button or wait for automatic quit.

Cod. 710.0103.01.00 Rev2A – 11.2012 10 - 111
Not resettable alarms
An alarm is defined NOT resettable (NO) when the cause that produces it persists, these types of alarms can’t be directly reset by the
controller until the causes that produce them are eliminated.
When one of these alarms appear proceed as follows:
-Identify the alarm code shown on controller display.
-Follow indications on alarm table PAR. 6.5.3. to eliminate the alarm original cause.
-Reset the alarm using the procedure described on previous point.
-if the alarm persists, try to reset pushing button for 3 sec. stopping the operation process (label OFF shown on
controller display), then restart pushing the same button.
-If the alarm persists call your local OMI distributor.
-Quit pushing button or wait for automatic quit.
6.5.3 Alarm table
Label Meaning Cause / Origin Controller status Reset
P1 (Pb1) Dew point probe
alarm
Missing, faulty probe or
resistance exceeding
value
Open collector / ala
rm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if the probe value recovers
If the alarm persists call your local OMI distributor
P2
(Pb2) Air inlet
temperature probe
alarm Valid only if
CF05 =1
Missing, faulty probe or
resistance exceeding
value
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if the probe value recovers
If the alarm persists call your local OMI distributor
P
(Pb3) Ambient
temperature probe
alarm
Missing, faulty probe or
resistance exceeding
value
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if the probe value recovers
If the alarm persists call your local OMI distributor
P4
(Pb4) Refrigerant circuit
suction temperature
probe alarm
Missing, faulty probe or
resistance exceeding
value
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if the probe value recovers
If the alarm persists call your local OMI distributor
A1
Dew Point high
temperature prealarm
(Pb1 probe)
Dew Point temperature
higher than the presetted
value
( PB1 > AL23 )
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
ot necessary
A2
Dew Point low
temperature prealarm
(Pb1 probe)
Dew Point temperature
lower than the presetted
value
( PB1 < AL20 )
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
ot necessary
A
High inlet air
temperature prealarm
(Pb2 probe) Valid only
if CF05 =1
Inlet air temperature
higher than the presetted
value
( PB2 > AL26 )
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
ot necessary
A4
High ambient
temperature pre-alarm
(Pb3 probe)
Ambient temperature
higher than the presetted
value
( PB3 > AL11 )
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
ot necessary
A5
High refrigerant circuit
suction temperature
prealarm (Pb4)
Refrigerant circuit suction
temperature higher than
the presetted value
( PB4 > AL29 )
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
ot necessary
AHP
High pressure safety
switch (HP/LP) alarm
(1P1 switch)
High pressure switch
digital input activation
Open collector / alarm relay O
Buzzer O
High pressure alarm icon lighted
Alarm code on display
Manual
Digital input deactivation then manual reset from Functions
menu.
AtFA (1Q2) Fan thermal
protection alarm
Digital input
activation
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Manual
Restart the (1Q2) thermal protection, then proceed with
manual reset from Functions menu.
If the alarm persists call your local OMI distributor
ALP
Low pressure switch
(LP) alarm
(1P3 switch)
Low pressure switch
digital input activation
Open collector / alarm relay O
Buzzer O
Low pressure alarm icon lighted
Alarm code on display
Automatic
It becomes manual after AL02 activations / hour
Manual
Digital input deactivation then manual reset from Functions
menu.

Cod. 710.0103.01.00 Rev2A – 11.2012 11 - 111
AtCO
(1S2) High Refrigerant
discharge temperature
alarm.
(1Q1) Refrigerant
compressor thermal
protection alarm
Digital input
activation
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
(1S2)
-
Manual
if the
temperature returns into range of good
working, then proceed with manual reset from Functions
menu.
(1Q1) - Manual
Restart the (1Q1) thermal protection, then proceed with
manual reset from Functions menu.
After AL09 events in 1 hour and digital input not active, set
parameter AL10=0 to resume with reset procedure from
Functions menu.
If the alarm persists call our Aftersale service
AMnC
Refrigerant
compressor
suggested
maintenance alarm
Running hours >
CO14
Open collector / alarm relay O
Buzzer O
Maintenance alarm icon lighted
Alarm code on display
Manual
Reset running hours from Functions menu.
(See PAR. 6.8)
A10 High Dew Point
temperature alarm A1 with AL22 delay
General
alarm icon lighted
Alarm code on display
Regulation OFF
Automatic
if Pb1 < AL23 - AL24
If the alarm persists call your local OMI distributor
A20 Low Dew Point
temperature alarm
A2 with AL19
delay
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if Pb1 > AL20 + AL21
If the alarm persist call your local OMI distributor
A 0
High inlet air
temperature alarm.
Valid only if CF05 =1
A3 with AL25
delay
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if Pb2 < AL26 - AL27
If the alarm persists call your local OMI distributor
A40
High ambient
temperature alarm
Valid only if CF05 =1
A4 with AL13
delay
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if Pb3 < AL11 – AL12
If the alarm persists call your local OMI distributor
A50
High refrigerant circuit
suction temperature
prealarm
A5 with AL28
delay
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
if Pb4 < AL29 – AL30
If the alarm persists call your local OMI distributor
EE EEPROM error alarm Memory data lost
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Manual
Reset from Functions menu. If after Reset procedure alarm is
occurring again, the controller remains blocked : call your
local OMI distributor
ACF2 Configuration alarm
CF01= 0
-
1
-
2
-
3 e
FA02 =1-2,
without
condensing
probe control
configuration
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
After parameter proper debug.
If the alarm persists call your local OMI distributor
ACF Configuration alarm
Two digital inputs
having the same
function
Open co
llector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
After parameter proper debug.
AFr Frequency alarm
The frequency of
power supply is
out of range
Open collector / alarm relay O
Buzzer O
General alarm icon lighted
Alarm code on display
Automatic
After the frequency becomes normal
If the alarm persists call your local OMI distributor
Alarms Log
Alarms Log contains the last 50 alarms events detected by the controller. Each new alarm higher than this number will take
automatically the place of the oldest memorized. The read-out is ordered from oldest (01) to newest (50).
To read Alarms Log list proceed as follow:
1. Enter the “FUNCTION MENU” (Push button)
2. Select “ALOG” function using and .
3. Push button to display the Alarms Log:
-Lower display will show the code of an alarm.
-Upper display will show the progressive number of the same alarm.
-Scroll all alarms contained using and .
4. Quit by using the button or wait automatically quit.
N.B.: Alarms Log can be erased only with password.

Cod. 710.0103.01.00 Rev2A – 11.2012 12 - 111
6.6 Programming
The controller’s parameters are collected into aggregates, each identified by a label. This allows the user an easy access to the
interested parameters. the label is shown on the display.
On table 6.6.2 are indicated and described all labels and the correspondent programming parameters.
6.6.1 Enter the PARAMETERS MENU and modification of the operation parameters
To ENTER the “parameters menu” proceed as follows:
1. Push simultaneously for a few seconds buttons. The Leds marked with and start to blink, the upper
display will show the label of the first parameters family that can be entered.
2. Using and buttons it’s possible to scroll the available parameters family list.
3. Push button to show the parameters list contained in the selected family: lower display will show alternately the selected
family label and the code of the first parameter contained, while upper display shows the value of the same parameter.
4. Using and buttons it’s possible to scroll through the parameters contained into the selected family.
5. Push to activate the MODIFICATION of the displayed parameter value.
6. Increase or decrease the parameter value using and buttons.
7. Push button to save the new value. In the end of the memorize procedure the controller automatically skips on the
parameters list showing the code of the next parameter.
8. Push button to return at previous menu.
9. To QUIT the menu push simultaneously buttons or wait 4 minutes without pushing any button (Automatic quit).
NOTE: a new set value is memorized also when the outlet is automatic and happens without pushing the confirmation
button.
The CF parameter family can be modified only with the unit in stand-by mode (display shows OFF)
6.6.2 Family Label table
LABEL
Containe
d
Paramete
rs
Parameters Description udm STANDARD
Value
ALL
Shows all
parameters ALL
ST01
Summer Set Point °C/°F
-
1,5
ST
ST02
Summer differential °C/°F
6
Thermoregulatio
n parameters ST05
Minimum summer set point °C/°F
-1,5
ST06
Maximum summer set point °C/°F
+1
CF04
PB1 probe configuration (DEW POINT)
0 = Probe absent
1 = NTC temperature
1
CF05
PB2 probe configuration (COMPRESSOR OIL PROBE)
0 = Probe absent
1 = NTC temperature
2 = NTC temperature for compressor oil
2
CF06
PB3 probe configuration (AMBIENT)
0 = Probe absent
5 = NTC temperature
5
CF07
PB4 probe configuration (REFRIGERANT CIRCUIT SUCTION)
0 = Probe absent
1 = NTC temperature
1
CF08
ID1 digital input configuration (1S2)
0 = refrigerant circuit thermal protection
0
CF09
ID2 digital input configuration (REMOTE ON/OFF)
3 = remote on/off
3
CF10
ID5 digital input CONFIGURATION (1Q2 – FAN THERMAL PROT.)
1 = Fan thermal protection
1
CF11
N.U:
4

Cod. 710.0103.01.00 Rev2A – 11.2012 13 - 111
CF12
ID1 digital input polarity (1S2)
0 = active with close contact
1 = active with open contact
1
CF
CF13
ID2 digital input polarity (REMOTE ON/OFF)
0 = active with close contact
1 = active with open contact
1
Configuration
Parameters CF14
ID3 digital input polarity (1P1)
0 = active with close contact
1 = active with open contact
1
CF15
ID4 digital input polarity
0 = active with close contact
1 = active with open contact
0
CF16
ID5 digital input polarity (1Q2 – FAN THERMAL PROTECTION)
0 = active with close contact
1 = active with open contact
1
CF19
PB4 polarity (REFRIGERANT CIRCUIT SUCTION)
0 = active with close contact
1 = active with open contact
1
CF20
Condensate drain valve/s relais polarity(RL4)
0 = active with close contact
1 = active with open contact
0
CF22
Refrigerant pressure value = 4ma bar
0
CF23
Refrigerant pressure value = 20ma bar
30
CF24
PB1 probe calibration offset (DEW POINT) °C/°F
-
1
CF25
PB2 probe calibration offset (COMPRESSOR OIL) °C/°F
0
CF26
PB3 probe calibration offset (AMBIENT) °C/°F
0
CF27
PB4 probe calibration offset (REFRIGERANT CIRCUIT SUCTION) °C/°F
0
CF28
Condensate drain unit operation
0 = Always ON
1 = Timed
1
CF29
Condensate drain ON - time Sec
3
CF30
Condensate drain OFF - time Sec
60
CF32
Selection: °C or °F
0 = °C / BAR
1 = °F / psi
0
CF33
Selection of mains frequency
0 = 50 Hz
1 = 60 Hz
2 = Direct current
2
CF34
Serial address
1
CF35
Remote controller
0 = 4 buttons
1 = 6 buttons
2 = 6 buttons with NTC probe on board
1
CF36
Default controller display
0 = IN / PROBE
1 = OUT / PROBE
2 = IN / rtC
3 = OUT / rtc
0
CF37
Firmware release
2.0
CF38
EEprom parameters map
1
Pr2
Password
CO01
Minimum delay at compressor re-start sec 10x
18
CO02
Minimum delay for compressor stop sec10x
18
CO
CO05
Delay at Refrigerant Compressor start form Power ON min10x
48
Refrigerant
compressor CO12
Refrigerant Compressor 1
0 = ON
1 = OFF
0
parameters CO14
Refrigerant Compressor hour counter SET (SUGGESTED
MAINTENANCE) h 10x
0
CO17
Difference between oil compressor and ambient temperature °C/°F
5
Pr2
Password
FA
N.U. ---
---
AL01
Digital input low pressure alarm delay Sec
5
AL02
Low pressure digital input Max. number of activations / hour
5

Cod. 710.0103.01.00 Rev2A – 11.2012 14 - 111
AL03
Low pressure alarm with dryer in remote OFF status or stand-by
0 = alarm detection OFF
1 = alarm detection ON
1
AL08
Refrigerant compressor thermal protection alarm delay at start Sec
1
AL09
Refrig. compressor thermal protection Max. number of activations / hour
16
AL10
Refrigerant compressor thermal protection alarm rest after AL09
0
AL11
High temperature alarm Set point PB3 (AMBIENT) °C/°F
bar/psi
45
AL12
High temperature Differential PB3 (AMBIENT) °C/°F
bar/psi
5
AL13
High temperature alarm delay PB3 (AMBIENT) Min
15
AL
Alarm
parameters AL17
Active output contact for remote output relay
0= alarm output ON
1= alarm output OFF
0
AL18
Alarm relay polarity
0= active output close contact
1= active output open contact
0
AL19
Low temperature alarm delay PB1 (DEW POINT) Min
5
AL20
Low temperature alarm Set PB1 (DEW POINT) °C/°F
-
1,0
AL21
Low temperature alarm differential PB1 (DEW POINT) °C/ °F
3
AL22
High temperature alarm delay PB1 (DEW POINT) Min
10
AL23
High temperature alarm Set point PB1 (DEW POINT) °C/°F
15
AL24
High temperature alarm differential PB1 (DEW POINT) °C /°F
2
AL25
High temperature alarm delay PB2 (COMPRESSOR OIL)
Valid only if CF05 =1 Min
20
AL26
High temperature alarm Set point PB2 (COMPRESSOR OIL)
Valid only if CF05 =1 °C/°F
60
AL27
High temperature alarm differential PB2 (COMPRESSOR OIL)
Valid only if CF05 =1 °C/°F
10
AL28
High temperature alarm delay PB4 (REFRIGERANT SUCTION) Min
20
AL29
High temperature alarm Set point PB4 (REFRIGERANT SUCTION) °C/°F
45
AL30
High temperature alarm differential PB4 (REFRIGERANT SUCTION) °C/°F
5
AL31
Alarm Probe PB1 - Max. number of activations / hour
5
AL32
Alarm Probe PB2 - Max. number of activations / hour (COMPRESSOR
OIL). Valid only if CF05 =1
5
AL33
Alarm Probe PB3 - Max. number of activations / hour
5
AL34
Alarm Probe PB4 - Max. number of activations / hour
5
AL35
Numero massimo interventi ora allarme generico utente
5
AL36
Delay temperature alarm signalling from compressor start Min
2
Pr2
Password
Warning for user:
It’s forbidden to modify setting parameters of the electronic controller without the
authorization of the manufacturer.
6.7 SET POINT DISPLAY
Push and release button:
•Lower display shows the message “SET”.
•Upper display shows current set point value.
NOTE: Any change to the machine’s configuration parameters could be harmful to its
efficiency and therefore it must be done only in collaboration with the Manufacturer.
6.8 SUGGESTED MAINTENANCE FUNCTION
The electronic controller is set through the CO14 “Refrigerant Compressor hour counter set” parameter. This will advise the operator
that preventive maintenance of the dryer is required (according to CAP. 5.0) every 3000 operation hours (the icon + AMnC alarm
code are blinking). This alarm WILL NOT STOP THE AIR DRYER WORKING. The alarm disappears after resetting the hour counter
from the Functions Menu.

Cod. 710.0103.01.00 Rev2A – 11.2012 15 - 111
Display Refrigerant Compressor working hours
1) Enter the Functions Menu ( button).
2) Push or buttons until the lower display will show the label “C1Hr” (refrigerant compressor working hours). Upper display
shows the number of working hours. The icon will be on.
Reset Refrigerant Compressor working hours
1) Enter the Functions Menu ( button).
2) Push or buttons until the lower display will show the label “C1Hr” (refrigerant compressor working hours). Upper display
shows the number of working hours.
3) Push button for more than 3 sec. so the upper display will show “0” confirming the reset.
4) Quit the Functions menu pushing button or wait 15 sec. (automatic quit).
6.9 BLACK OUT
After a power black-out:
1. The controller restarts from the previous status.
2. All the working time delay will be reloaded.
6.10 REMOTE CONTROLS
6.10.1 Remote ON/OFF
The dryer can be remotely started and stopped (REMOTE ON/OFF). Proceed as follow to activate this function:
1. Disconnect the dryer from electrical supply and open the electrical box.
2. Remove the bridge between the two terminal blocks marked with “ON/OFF” (See electric wiring diagram – wires 14 and 10).
3. Connect the “ON/OFF” terminal blocks to remote a unipolar switch.
Remote ON/OFF digital input is configured as follow: close contact = dryer ON.
When the dryer is switched off using remote OFF command, the controller shows on upper display line
the message “OFF” and the remote ON/OFF led blinks.
The remote OFF function disables the ON function from the dryer’s control board (until the ON function
is activated from remote ON/OFF switch). To restart the dryer it’s necessary to operate on the remote
control.
The activation of the above function is at the user’s discretion. The user will purchase all necessary
installation materials himself. Any operation which needs access to the dryer must be carried out by
qualified personnel.
6.10.2 Remote signalling alarm
The dryer control board is supplied complete with a digital output configured as remote signalling alarm. This digital output is controlled
by a relays configured as normally open: when an alarm is detected, these relays close a circuit. The status of the relays can be
inverted, if necessary, using AL18 programming parameter (See 6.6.2 Parameters table).
Proceed as follows to activate a remote alarm output:
1. The User must provide a signaller in compliance to output relays electrical features (solenoid coil, light bulb, acoustic signaller,
...).
2. Disconnect the dryer from the electrical supply and open the electrical box.
3. Connect the signaller on “REMOTE ALARM” terminal blocks (See electric wiring diagram – wires 25 and 26).
The activation of the above function is at the user’s discretion. The user will purchase all necessary
installation materials himself. Any operation which needs access to the dryer must be carried out by
qualified personnel.
Alarm Output relays electric features:
Voltage on User’s discretion
max. current 3A

Cod. 710.0103.01.00 Rev2A – 11.2012 16 - 111
7.0 TROUBLESHOOTING
SYMPTOM POSSIBLE ORIGIN SOLUTION
A) Temperature
shown in display
higher than the preset
value.
•
High compressed air inlet temperature.
•High compressed air flow.
•High ambient temperature.
•Fouler refrigerant condenser.
•Low refrigerant charge.
•Phases connected incorrectly.
•Faulty refrigerant compressor.
•Faulty fan.
•Faulty fan pressure switch or thermostat.
•Faulty electronic controller
•
Reduce air temperature to within design limits.
•Reduce air flow to within design limits.
•Increase ventilation rate of installation area.
•Clean condenser.
•Locate and repair leak and re-charge.
•Connect the phases correctly.
•Replace item.
•Replace item.
•Replace item.
•Replace item.
B) Excessive air
pressure drop across
dryer.
•
Inlet / outlet piping reversed.
•Temperature probe out of well.
•Faulty refrigerant solenoid valve.
•Ambient temperature below freezing.
•Obstruction in air circuit.
•Air by – pass valve closed.
•
Connect properly.
•Re-install.
•Replace item.
•Install dryer in heated space.
•Locate and remove blockage.
•Open valve.
C) Water present in air
downstream of dryer.
•
Condensate drain strainer fouled.
•Faulty condensate drainer.
•Faulty electronic controller.
•High dew – point temperature.
•Air by – pass valve open.
•
Clean strainer.
•Replace item.
•Replace item.
•See Symptom #A above.
•Close valve.
8.0 CONDENSATE DRAIN
8.1 Drain valve maintenance
•Close the ball valve located on the filter/stop installed at the drain trap inlet.
•Depressurize the trap by pushing the TEST button on the control panel.
•Unscrew the plug in the end of the filter/stop to access the filter screen (F) and
clean it with a compressed air jet.
•Reassemble and open filter/stop valve.
Cleaning of the drain solenoid valve
8.2 NO LOSS CONDENSATE DRAIN
Electronic drain discharge is the new discharger applicable
to any compressed air systems. It eliminates the
condensate without wasting compressed air.
Electronic drain discharge starts automatically, without the
need of any adjustment. The condensate discharge occurs
to the use of an electronic sensor, which detects the
amount of condensate in the integrated water collecting
tank. The level sensor drives start and duration of the
drainage, so preventing any wasting of compressed air.
At the end of installation, put the system under pressure
and push the TEST key repeatedly to eliminate the air
bubbles contained in the discharger inlet fittings.
To this discharger will be applied the Beko warranty
conditions.
(F)