Direct drive and without energy loss

The air end compressor and motor are directly flanged by

a casing, where the elastic coupling is placed.

This kind of assembly is the most effective one, due to:

• Eliminates the transmission loss produced at the belt system.

• Guarantees a perfect alingment of the compressor with the motor.

• It doesn't require maintenance.

• It reduces the vibrations of the rotor, which prolongs the life

of the bearings.

High performance rotors

The whole range uses rotors with new 5/6 design, with the latest

and newest profile, which remarkably improve the performance

of the traditional rotors with 4/6 design.

As they have been worked in high precission machines, the internal

loosenesses of the rotor have been reduced.

¿Rotor's revolutions? -The optimum ones

All the rotors have a performance curve like the one at the right

chart. Taking into account that there is an optimum range of revolutions

for using each rotor, this range varies depending on the size of it.

When the rotor works out of this optimum range, the performance

slows down due to the following reasons:

• If the rotor turns at very low revolutions, the air flow is too slow

and many internal leaks are produced between the

rotors, and between these and the housing that holds thems.

• If the rotor at very high revolutions, there are too many dynamic losses

due to the air friction with the inside part of the rotor.

At the range ER-55 PMX, the rotors are only used within the optimum

range area. For this reason, there are three different size rotors

depending on the model (up of 5) of the machine.

Direct drive: reliable and proffitable

Integrated oil separator

The oil separator, with an exclusive design, is made up of

one tank containing inside several elements, which cause,

by means of the centrifuging and the change of air flow direction,

the first oil separation.

Integrated refrigerators with flameproof motor

The refrigeration pack has been specifically designed for

its use at ER-55 PMX compressors, and they make one

integrated set.

The advanzed design of the fan's blades reduces:

• More than 30% of energy consumption with regard to the fans

with conventional blades.

• The emitted noise.

• Motor with Ex II 26 EEx, T1, T2, T3 classfication for

Divission 1, Type 1 classed areas .

As it has been integrated, presents big advantages when

compared with solutions where the fan is set independently from the

radiator, because both the collector and the position of the

fan are the best ones. This assures that the air flow and the pressure

are son uniform on the whole surface of the radiator.

This system allows the compressor to work at full load with the

doors open, which is completely necessary for testing the

machine during the machine's maintenance.

Direct access to radiator

The refrigerators need frequent cleaning operations in

order to keep their efficiency. In order to make easier this routine

the ER range have a direct access lockgate that allows to do

this job within a few minutes.

Profitable innovation

New BETRONIK-II control

New BETRONIK-II control. Precission and optimum performance.

The BETRONIK-II control, is a strong industrial microprocessor specially developped for compressors and capableof bearing the hard conditions that usually are inside compressor rooms.

By means of sensors, it controls the elements that require vigilance of compressor. Trough a display with symbols andpictograms, it allows to check and modify the performance of the compresor, and to know the parts that requiremaintenance.

Display• Impulse temperature• Outlet pressure• Internal pressure of the tank• Differential pressure of separator filter• Total working hours• Load working hours• Oil filter maintenance hours• Separator filter maintenance hours• Air filter maintenance hours

At VF models:• Motor's rpm speed• % of load

Warnings and notices• High impulse temperature• High impulse pressure• High internal pressure• High differential pressure of separator filter• Maintenance of separator filter• Maintenance of oil filter• Maintenance of air filter

Comunications• RS485 port for net integration with other compressors

and room controllers.• RS485 port with MODBUS RTU protocol

Control• Solenoid valve for regulation• V Solenoid valve for condensate drainage • Thermostatic "by-pass" valve• Remote load / unload• Integrated rotation system for up to three compressors• Register of the last 15 warnings and alarms • Automatic restart after current breaking.

(optional)• Control of number of starts per hour

Alarms and disconnection • Maximum impulse temperature• Maximum impulse pressure• Maximum internal pressure• Maximum pressure of separator filter• Internal mininum start pressure• Internal mininum working pressure• Fail due to main motor overload• Fail due to fan motor overload• Temperature of the motor • Emergency stop• Fail of the pressure and temperature sensors

Display

Start-up

Start button

Stop button

Emergency button

Motor

Electric thriphasic motor US brand, squirrel-cage armature, completely closed,with outdoor ventilation, horizontal working position, EFFICIENCYPREMIUM PLUS, and flameproof.

• Insulation type F, Design B

• 230/460 V

• 60 Hz

• Service factor 1.15

• For areas classedDivission1, type 1

• Motor with “UL” approval.

Oil drilling instalations

Electric cupboard and wiring

Electric cupboard and wiring following flameproof standards.

New BETRONIK-II control. Precission and optimumperformance

The BETRONIK-II control, is a strong industrial microprocessorespecially developped for compressors, and capable of beraing the hardcondicions that usually are inside compressor rooms.By means of sensors, controls the elements that require vigilance ofcompressor. Trough a display with pictograms and symbols, it allowsto check and modify the performance of the compresor, and to knowthe parts that require maintenance.

Painting

Special for maritime environments• Degreasant-Phosphated.• Epoxi primer.• Intermediate epoxi thick coat.• Enamel polyurethane coat.

Technical characteristics

Reference conditions:

— Suction temperature 20 OC.

— Absolute suction pressure 1 bar.

Dissolved Air Flotation measured at following conditions:

— Model of 8 bar measured at 7,5 bar.

— Model of 10 bar measured at 9,5 bar.

— Model of 12 bar measured at 11,5 bar.

(1) Unit's air flow measured according to ISO 1217 +/- 5% Standards.

(2) Sound level measured at a distance of 1 m according to Cagi/Pneuropt+/-3dB(A) test code..

(3) Made according ISO 5388 security standards.

CARACTERÍSTICAS TÉCNICASMODEL Pressure Flow (1) Nominal Power Sound level Measures

bar m3/min l/s Kw dB(A)(2) L mm. A mm. H mm. Kg.

50 - 60 Hz.

7,5 9,96 166,0 55 75

ER-55 PMX 10 8,17 136,2 55 75 2.170 1.100 2.233 1.700

12 6,85 114,1 55 75

Certified Security

All Betico compressors fulfill European directives of security 98 / 37 / CE and of pressure vessels 97 / 23 / CE.Avoid responsabilities demanding for the fulfillment of these directives, and carrying out the maintenance by our specialist authorized technicians.

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