M&C TechGroup FA-1-2-3 bi Operator's manual

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Operating Manual

Flow alarm sensors Series FA®

Version FA -1/2/3,bi

Electronic Controllers Series FA®

Version FA-1.1, FA-1.4

Pre-Amplifier K-FA..

Gas sampling and conditioning technology 5-6.10-ME

This Operating Manual does not claim completeness and may be subject to technical modifications. © 01/2006 M&C TechGroup Germany GmbH. Reproduction of this document or its content is not allowed without permission from

M&C. FA® is a registered trade mark.

1st Edition: 01/06

Dear customer,

we have made up this operating manual in such a way that all necessary information about the product can be found and understood quickly and easily. Should you still have any question, please do not hesitate to contact M&C directly or go through your appointed dealer. Respective contact addresses are to be found in the annexe to this operating manual. Please also contact our homepage www.mc-techgroup.com for further information about our products. There, you can read or download the data sheets and operating manuals of all M&C products as well as further information in German, English and French.

Gas sampling and conditioning technology 5-6.10-ME

Contents

1 General information ................................................................................................................... 4

2 Declaration of conformity ......................................................................................................... 4

3 Safety instructions ..................................................................................................................... 5

4 Warranty ..................................................................................................................................... 5

5 Used terms and signal indications ........................................................................................... 6

6 Introduction ................................................................................................................................ 7

6.1 Patented flow alarm sensor ................................................................ .................................. 7

7 Application ................................................................................................................................. 7

8 Technical data ............................................................................................................................ 8

9 Description ................................................................................................................................. 9

10 Receipt of goods and storage ................................................................................................ 10

11 Installation instructions .......................................................................................................... 10

12 Mounting ................................................................................................................................... 11

13 Electrical connection ............................................................................................................... 11

13.1 Electronic controller FA-1.1 ................................................................................................ 12

13.2 Electronic controller FA-1.4 ................................................................................................ 13

13.3 Pre-amplifier K-FA ............................................................................................................. 14

14 Starting ..................................................................................................................................... 15

14.1 Sensitivity Adjustment for electronic controllers FA1.1 and FA1.4 ..................................... 16

14.2 Sensitivity adjustment for use of pre-amplifier K-FA.. ......................................................... 16

14.3 Adjustment of the delay time .............................................................................................. 17

15 Closing down ........................................................................................................................... 18

16 Maintenance and Repair .......................................................................................................... 18

17 List of spare parts .................................................................................................................... 18

18 Annexe ...................................................................................................................................... 19

List of illustrations

Figure 1 Flow alarm sensor FA-1/2/3bi on measuring glass with bi-stable or mono-stable

function ................................................................................................................................. 10

Figure 2 Electrical connection and dimensions FA-1.1....................................................................... 12

Figure 3 Electrical connection and dimensions FA-1.4....................................................................... 13

Figure 4 Assembly plan of the FA-1.4 ................................................................................................ 14

Figure 5 Electrical connection K-FA ................................................................................................... 15

Figure 6 Circuit diagram of the electronic controller FA1.1, 115/230V ............................................... 20

Figure 7 Circuit diagram of the electronic controller FA1.1, 24VAC ................................................... 21

Figure 8 Circuit diagram of the electronic controller FA1.4, 115/230V ............................................... 22

Figure 9 Circuit diagram of the electronic controller FA1.4, 24V AC/DC ............................................ 23

Figure 10 Circuit diagram of the electronic controller K-FA (-H), 115/230V ......................................... 24

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Head Office

M&C TechGroup Germany GmbH  Rehhecke 79  40885 Ratingen  Germany

Telefone: 02102 / 935 - 0 Fax: 02102 / 935 - 111 E - mail: info@mc-techgroup.com www.mc-techgroup.com

1 GENERAL INFORMATION

The product described in this operating manual has been examined before delivery and left our works in perfect condition related to safety regulations. In order to keep this condition and to guarantee a safe operation, it is important to heed the notes and prescriptions made in this operating manual. Furthermore, attention must be paid to appropriate transportation, correct storage, as well as professional installation and maintenance work. All necessary information a skilled staff will need for appropriate use of this product are given in this operating manual.

2 DECLARATION OF CONFORMITY

CE - Certification

The product described in this operating manual complies with the following EC directives:

EMV-Instruction

The requirements of the EC directive 2004/108/EC “Electromagnetic compatibility“ are met.

Low Voltage Directive

The requirement of the EC directive 2006/95/EC “Low Voltage Directive“ are met. The compliance with this EC directive has been examined according to DIN EN 61010.

Declaration of conformity

The EU Declaration of conformity can be downloaded from the M&C homepage or directly requested from M&C.

Gas sampling and conditioning technology 5-6.10-ME

3 SAFETY INSTRUCTIONS

Please take care of the following basic safety procedures when mounting, starting up or operating this equipment:

Read this operating manual before starting up and use of the equipment. The information and warnings given in this operating manual must be heeded.

Any work on electrical equipment is only to be carried out by trained specialists as per the regulations currently in force.

Attention must be paid to the requirements of VDE 0100 (IEC 364) when setting high-power electrical units with nominal voltages of up to 1000 V, together with the associated standards and stipulations.

Check the details on the type plate to ensure that the equipment is connected to the correct mains voltage.

Protection against touching dangerously high electrical voltages: Before opening the equipment, it must be switched off and hold no voltages. This also applies to any external control circuits that are connected.

The device is only to be used within the permitted range of temperatures and pressures. Check that the location is weather-protected. It should not be subject to either direct rain or moisture. The devices described in this Operating Manual must not be used in hazardous areas. Installation, maintenance, monitoring and any repairs may only be done by authorized personnel with

respect to the relevant stipulations.

4 WARRANTY

If the equipment fails, please contact M&C directly or else go via your appointed M&C dealer. We offer a one year warranty as of the day of delivery as per our normal terms and conditions of sale and assuming technically correct operation of the device. Consumables are hereby excluded. The terms of the warranty cover repair at the factory at no cost or the replacement at no cost of the equipment free ex user location. Reshipments must be sent in a sufficient and proper protective packaging.

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DANGER!

This means that death, severe physical injuries and/or important material damages will occur in case the respective safety measures are not fulfilled.

W ARN IN G !

This means that death, severe physical injuries and/or important material damages may occur in case the respective safety measures are not fulfilled.

CARE!

This means that minor physical injuries may occur in case the respective safety measures are not fulfilled.

CAR E!

Without the warning triangle means that a material damage may occur in case the respective safety measures are not met.

ATT ENT ION !

This means that an unintentional situation or an unintentional status may occur in case the respective note is not respected.

NOTE!

These are important information about the product or parts of the operating manual which require user’s attention.

SKILLED STAFF

These are persons with necessary qualification who are familiar with installation, use and maintenance of the product.

5 USED TERMS AND SIGNAL INDICATIONS

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6 INTRODUCTION

The flow alarm units FA... are used for monitoring failures of sample gas or test gas in analysing equipment or analyse systems. The patented M&C flow alarm sensor FA-1/2/3bi can only be used on flow meters with meter tubes out of transparent material. By means of the optical scanning, it is possible to register also very small flow quantities for example in case of non-metallic or small particles.

We can also supply a high temperature version for temperatures of up to 180°C. The M&C flow alarm units FA... are designed for stationary continuous operation and provide a long

service life and a minimum of maintenance work presuming a correct installation.

6.1 PATENTED FLOW ALARM SENSOR

The patented optical flow alarm sensors (forked light barriers) FA1/2/3bi are produced by M & C TechGroup GmbH, D- 40885 Ratingen. [PATENT-No.: 3528270]

7 APPLICATION

In the analyse technique, the optical flow alarm sensors FA-1/2/3bi are used for the flow monitoring in flow meters with meter tubes made of transparent material, for example Duran glass. By means of the optical scanning, it is possible to detect also very low flow quantities in flow meters with non-metallic or very small particles (1 mm).

The M&C electronic controllers series FA® are to be used for operating the flow alarm sensors FA-

1/2/3bi and FA2-H (see data sheet 5-6.15) as well as the liquid sensor KS 2 (not KS 2.Ex).

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Flow alarm sensor Type

FA-1, bi

FA-2, bi

FA-3, bi

Part-No.

02E1000

02E2000

02E3000

Meter tube

5-14 mm

13-27 mm

26-55 mm

Dimensions B x T x H in mm

35 x 23 x 15

63 x 40 x 22

103 x 75 x 25

Weight

50 g

100 g

200 g

Operating temperature

-25°C to +70°C

Storage temperature

-25°C to +70°C

Electrical connection

3 m connection cable standard; ø 4,5 mm, 4 cores (for each additional meter of sensor connection cable = Part-No.: 02E9000, max. 10 meters) (>10 m = with pre-amplifier K-FA.. max. 200 meters)

Mounting

With clamping screw

Function

Bi-stable and mono-stable

Power supply voltage

From electronic controller FA...

Protection type

IP65 EN 60529

Material

Aluminium anodised, epoxy, PVC cable, semi-conductors

Electronic Controller Type

FA-1.1

FA-1.4

K-FA**

230V 50/60Hz 115V 50/60Hz 24V DC 24V AC

02 E 7300* 02 E 7300* 02 E 7300 d 02 E 7300 b

02 E 7110 02 E 7110 a 02 E 7110 d 02 E 7110 d

02 E 4020

Mounting

Wall mounting housing

Rail mounting housing EN 50022

Wall mounting housing

Sensor inlets

111

Function mono-stable / bistable / KS 2

all, selectable via electrical assignment mono- or bi-stable

Power consumption

2 VA

1 VA1 VA

Alarm Relay (MC/NC/NO) Contact rating max.

250V AC/DC AC=500VA, DC=50W, 3A

250V AC/DC, AC=500VA, DC=45W, 2A

Pull-in/drop-off time lag of alarm relay

2 sec.

Cable inlet

1x clamping range 3mm - 6,5mm 2x clamping range 5mm - 10mm

1x clamping range 3mm - 6,5mm 1x clamping range 5mm - 10mm

Electrical connection

Terminals max. 2,5 mm2

Adjustment of sensitivity for sensor FA..

After removing the lid on the potentiometer

On the front side of the housing on the potentiometer

Distance between sensor and electronic FA-..

max. 10m

>10m, max. 200m

Line break monitoring

Yes

Protection type

IP65 EN 60529

IP20 EN 60529

IP65 EN 60529

Housing material

Polycarbonate

Polyamide

Polycarbonate

Ambient temperature

-25°C to +60°C

Electrical standard

EN61010

Dimensions

W 80 x L 160 x H 55 mm

W 22,8 x L 100 x D 111 mm

W 80 x L 160 x H 55 mm

Weight

0,31 kg

0,18 kg

0,3 kg

8 TECHNICAL DATA

* reversible mains voltage 230V 50Hz / 115V 60Hz, adjusted at works: 230V 50Hz. **To be used in connection with electronic controller FA-1.1 or FA-1.4 for cable lengths of above 10m between forked light barrier and electronic controller

Serie FA® Version FA-1.4

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9 DESCRIPTION

The M&C flow alarm sensor FA-1/2/3bi consists of a compact aluminium body with a fixed, open prism and a pressure screw. This makes the positioning of the flow alarm sensors FA-1/2/3bi onto the measuring glass of the flow meter very easy; it is not necessary to disassemble the measuring glass. Three basic versions FA-1bi, FA-2bi and FA-3bi cover a measuring glass diameter range of 5-55 mm. Inside the sensor’s body, a mechanically protected, high-intensity LED is mounted on the left side as light source and two phototransistors are mounted on the opposite side as receivers. The standard connection cable of 3 meters comes out on the left side laterally to the pressure screw. The light beam of the LED meets the photo transistors through the flow measuring glass. As soon as the floating particles interrupt the light beam, one or both phototransistors are blacked out.

The M&C electronic controllers series FA® are available in 2 housing types for wall mounting or rail mounting. Both types contain three service functions to be determined via the electrical connection:

 Electronic controller for flow monitoring in bi-stable execution in combination with the flow

alarm sensors (forked light barriers) FA-1/2/3bi.

 Electronic controller for flow monitoring in mono-stable execution in combination with the flow

alarm sensors FA-1/2/3bi or FA2-H.

 Electronic controller for liquid sensor KS 2 or operation in combination with the external pre-

amplifier K-FA, in case the cable length between flow alarm sensor FA-1/2/3bi and electronic FA-1.. is more than 10 meters or in case of strong straying signals influencing the evaluation via the sensor cable.

For sure operation, a line break monitoring is integrated. For sure alarm signalling a potential-free change-over contact with „Safety-first“ switching is existing. In order to avoid unwanted alarm signals in case of pulsating gas flow, the alarm switch has got a pull-in and drop-off time-lag. Two LED’s are signalling operational or fault status. The electronic controllers FA-1.. are balanced in the factory relating to the flow alarm sensors FA- 1/2/3bi and the measuring glasses of the flow meter FM-40 7-70NL/h. Additionally, the luminosity of the flow monitoring sensor FA-1/2/3bi is automatically controlled in dependence on the ambient and

operating conditions (lighting conditions, temperature, agjng of the LED’s, contamination of the flow

meter glass, etc.). In case of operating a bi-stable flow monitoring, the identification of the set flow value adjusted by the flow alarm sensors FA-1/2/3bi is guaranteed in case of exceeding or falling below the present value (MIN or MAX). In case of mono-stable operation, there is only an indication given whether the floating particle is located in the light beam of the flow alarm sensor FA-1/2/3bi or above or below it (see figure 1).

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











  





bistable (bi) min. - Alarm

Monostable (mo)













bistable (bi) max. - Alarm

10 RECEIPT OF GOODS AND STORAGE

 Please take the flow alarm units FA... and eventual special accessories carefully out of the

packaging material immediately after arrival, and compare the goods with the items listed on the packing list.

 Check the goods for any damage caused during delivery and, if necessary, notify your

transport insurance company without delay of any damage discovered.

The flow alarm units FA... are containing 1 to 4 parts depending on the desired range of delivery:

1. Flow alarm sensor FA-.bi

2. Electronic controller FA-1..

3. Pre-amplifier K-FA

4. Flow meter FM...

11 INSTALLATION INSTRUCTIONS

In case a complete monitoring unit containing forked light barrier, electronic controller and flow meter is ordered, we will execute a balance in our works with the flow meter FM-40 7-70Nl/h. This balancing may also be appropriate for other flow meters depending on the ambient conditions (lighting conditions). Should this not be the case, see chapter 14.2 and 14.3.

black floating particle: Alarm; white floating particle: o.K

 Float stopper  Flow alarm sensor FA1bi  Locking screw  Flow meter measuring tube  Floating particle

Figure 1 Flow alarm sensor FA-1/2/3bi on measuring glass with bi-stable or mono-stable function

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W ARN IN G !

Incorrect power supply may destroy the device. When connecting the equipment, please ensure that the supply voltage is identical with the information provided on the type plate!

W ARN IN G !

When setting high-power electrical units with nominal voltages of up to 1000 V, attention must be paid to the requirements of VDE 0100 together with the associated standards and stipulations! A main switch must be provided externally.

The main circuit of the device must be equipped with a fuse corresponding to the nominal voltage (over current protection); for

electrical details see technical data.

12 MOUNTING

Fix the flow alarm sensor , while the connection cable points to the left side (M&C-imprinting is readable) and using the locking screw  onto the flow meter’s measuring tube  on the desired control point for a min.-alarm (floating particle is situated in normal operation above the flow alarm sensor) in such a way that the light beam of the flow alarm sensor will not be deflected by eventual inscriptions or coloured background of the measuring tube.

The design of the optical flow alarm sensor (forked light barrier) provides perfect function in case of normal day light or normal illumination. A strong incidence of light from outside to the sensor should however be avoided.

In case the flow alarm sensor is mounted by 180° distorted, (connection cable points to the right side), the function is reversed (max.-alarm, floating particle is in normal operation below the forked light barrier).

The electronic controller FA1.1 is destined for wall mounting. Mounting dimensions see figure 2, page 13 . The electronic controller FA1.4 is destined for rail mounting according to EN 50022. Mounting dimensions see figure 3, page 14.

13 ELECTRICAL CONNECTION

The sensor cable should not be too short when being fixed in order to assure a simple dismounting of the forked light barrier in case of control or cleaning.

The electronic controllers FA-1.1 are equipped with a selector switch S3 for the power supply of 230 or 115 V. At the factory, this switch is adjusted to 230 V. Before starting, check the desired supply voltage and adjust the selector switch if necessary by means of a screw driver.

The electronic controllers FA-1.4 in 24 V execution are suitable for both direct voltage as well as alternating voltage.

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80 50

148

160

210

Ø4,3

13.1 ELECTRONIC CONTROLLER FA-1.1

For the electrical connection, the following steps have to be executed (see figure 2):

 Loosen the 4 lid screws and remove the lid.  Direct the connection cable through the respective clamping screws.  The electrical connection of the sensors FA-1/2/3bi is to be made according to the colours of

the terminals 5 = yellow, 6 = green, 7 = white and 8 = brown.

 The electrical connection of the sensor KS 2 and the pre-amplifier K-FA.. is to be made

according to the colours of the terminals 15 = yellow, 16 = green, 17 = white and 18 = brown.

 The voltage supply occurs on the terminals 1 = L, 2 = N and 3 = PE.  The alarm is to be connected to terminal 11 = centre contact (MC), 12 = alarm (NC) and 14 =

o.k. (NO).

 For a mono-stable evaluation, the attached jumper must be mounted between terminals 16 and

17 (this is not necessary for operation with pre-amplifier K-FA.. because a bi-stable or monostable operation is set on the pre-amplifier (see chapter 13.3))

Figure 2 Electrical connection and dimensions FA-1.1

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5 6 7 8

15 16 17 18

L/+ N/- PE PE

11 12 14 NC

1 2 3 4

ye. gn. wh. bn.

22,5

13.2 ELECTRONIC CONTROLLER FA-1.4

For the electrical connection, the following steps have to be carried out (see also figure 3):  The electrical connection of the sensors FA-1/2/3bi is to be made on the terminals 5 = yellow,

6 = green, 7m = white and 8 = brown.

 The electrical connection of sensor KS 2 and the pre-amplifier K-FA.. is to be made on the

terminals 15 = yellow, 16 = green, 17 = white and 18 = brown.

 The voltage supply happens on the terminals 1 = L, 2 = N and 4 = PE.  The alarm is to be connected to terminals 11 (MC), 12 (NC) and 14 (NO). In case of alarm

contact 11 and 12 are closed and voltage free.

 For a mono-stable evaluation, the attached jumper must be mounted between the terminals 16

and 17 (this is not necessary for operation with pre-amplifier K-FA.. because a bi-stable or mono-stable operation is set on the pre-amplifier (see chapter 13.3))

Figure 3 Electrical connection and dimensions FA-1.4

Gas sampling and conditioning technology 5-6.10-ME

Figure 4 Assembly plan of the FA-1.4

13.3 PRE-AMPLIFIER K-FA

For the electrical connection, the following steps have to be carried out (see also figure 4):

 Loosen the 4 lid screws and remove the lid.  Lead the connection cable through the respective clamping screws.  The electrical connection of the sensors FA-1/2/3bi is to be made on the terminals 5 = yellow,

6 = green, 7 = white and 8 = brown, clamping block X2.

 The electronic controller FA-1.. is to be mounted on clamping block X1, terminals 5 = yellow,

7 = white and 8 = brown.

 The function mono-stable or bi-stable is determined via the 3 jumpers S1, S2 and S4.

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W ARN IN G !

Wrong power supply may destroy the equipment. When connecting, please ensure that the supply voltage is identical with the information provided on the model type plate!

148

160

210

Ø4,3

Figure 5 Electrical connection K-FA

14 STARTING

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NOTE!

For bi-stable electronic controller: If the floating particle  is situated above the flow alarm sensor  when starting and before the power supply of the electronic controller FA-1.. is switched, the red LED is beaming and signalises alarm (Safety-Firstswitching). The same applies in case of a short-time voltage failure during operation. This alarm is cleared by cutting first and re-feeding of gas.

 Without feeding of gas, the floating particle  is placed on the float stopper  on the bottom of

the flow meter measuring glass.

 In case of mono-stable function, the sensor is fixed to the meter tube in such a way that the

floating particle is placed on the lowest position (alarm point) and the light beam of the sensor is blacked out. For adjusting the alarm level, the float stopper must be regulated.

 In case of bi-stable function, the sensor is fixed to the meter tube in such a way that it marks

the necessary minimum flow rate (min. alarm) or the maximum admissible flow rate (max. alarm).

 Switch on the power supply for the electronic controller.  The red LED of the electronic controller or the pre-amplifier is beaming – alarm situation.  Move the floating particle  by feeding of gas into a position above the flow alarm sensor .  The green LED of the electronic controller or the pre-amplifier is beaming - O.K. situation.

The flow control unit is ready for work!

14.1 SENSITIVITY ADJUSTMENT FOR ELECTRONIC CONTROLLERS FA1.1 AND FA1.4

The standard adjustment of the electronic controllers FA-1.. is made at works for the flow alarm sensor (forked light barrier) FA-1bi and the measuring glasses of the flow meters FM-40 for 7-70Nl/h.

If the client composes a system with single components and if the alarm function is not given in case of using other measuring glasses than ours, the adjustment of the forked light barriers FA-1/2/3bi can be made as follows:

 The forked light barrier must be mounted onto the flow meter glass.  The floating particle of the flow meter must not be inside the light beam of the forked light

barrier FA-1/2/3bi.

 Concerning the wall mounting version FA-1.1 : Loosen the 4 screws and remove the lid. Press

the button S1 and search simultaneously the respective spot on the potentiometer P1 where the LED indication changes from read to green or from green to red (turn clockwise in order to change from red to green).

 Concerning the rail mounting version FA-1.4 : Press the button Bal.-Control and search

simultaneously the respective spot on the potentiometer (Balance-adj.) where the LED indication changes from red to green or from green to red.

14.2 SENSITIVITY ADJUSTMENT FOR USE OF PRE-AMPLIFIER K-FA..

When using a pre-amplifier K-FA.., the sensitivity adjustment is only to be made on the pre-amplifier and not on the connected electronic controller FA-1.. .

 For executing the sensitivity adjustment, loosen the 4 screws and remove the lid.

Gas sampling and conditioning technology 5-6.10-ME

NOTE!

When adjusting the sensitivity, the following principle should be considered: As sensitive as necessary, as insensitive as possible.

Resistor

Slow operation

Resistor

Slow release

R17 1 KΩ

approx. 0 seconds

R16 1 KΩ

approx. 0 seconds

R17 100 KΩ*

approx. 3 seconds

R16 100 KΩ*

approx. 2 seconds

R17 270 KΩ

approx. 7 seconds

R16 270 KΩ

approx. 6 seconds

R17 560 KΩ

approx. 11 seconds

R16 560 KΩ

approx. 10 seconds

R17 1 MΩ

approx. 14 seconds

R16 1 MΩ

approx. 13 seconds

 Adjust the voltage signal on the electronic board of the pre-amplifier K-FA.. for both photo

transistors to a value between +0,08 (lowest sensitivity) to + 0,18 VDC (highest sensitivity). The

tension is to be measured on the connection points of the sensor’s connection cables or the

soldering points M1 – M3. The adjustment is to be made on the potentiometers P1 and P2.

ws (white) resp. M2 = lower phototransistor, adjustable at P1 gn (green) resp. M1 = upper phototransistor, adjustable at P2 ge (yellow) resp. M3 = earth

 Measurement to be made in bi-stable version between:

ge (yellow) resp. M3 = 0V and ws (white) resp. M2 = +V (lower phototransistor) ge (gelb) resp. M3 = 0V and gn (green) resp. M1 = +V (upper photoransistor)

 Measurement to be made in mono-stable version between:

ge (yellow) resp. M3 = 0V and ws (white) resp. M2 = +V (only lower phototransistor)

14.3 ADJUSTMENT OF THE DELAY TIME

By applying the following, unwanted alarm indication in case of pulsating gas flow can be avoided. Slow operation: Alarm release is given with a time-lag. Slow release: Alarm is given with a time-lag.

The electronic board is accessible as follows:

 In wall mounting version FA-1.1 by removing the 4 lid screws.  In the rail mounting version FA-1.4 you have to loosen the locking behind the terminals on the

upper and lower side by using a screw driver. Then, you can tear the printed board together with the housing front out of the back housing part.

The pick-up and drop-out time delay of the alarm relay is adjustable with the fixed resistors R16/R17 at the adjusting points on the electronic board of the electronic controller FA-1.. . The position of the resistors is to be seen in figures 2 and 4.

* Standard adjustment at works = 33 KΩ = 1second pick-up and drop-out time delay The times represent approximate values and are dependent on the tolerances of the components.

Gas sampling and conditioning technology 5-6.10-ME

NOTE!

Before carrying out any maintenance or repair work, the specific safety procedures pertaining to the system and the operational process have to be observed!

15 CLOSING DOWN

For closing down the equipment, no special measures are to be taken.

16 MAINTENANCE AND REPAIR

The flow control units series FA® are functioning without necessity of maintenance over a long time. It may be that the LED and the phototransistors of the flow alarm sensor FA-1/2/3bi must be cleaned due to dust deposits. Please execute this cleaning with a dry cotton bud (Q-tip). If you want to humid this cotton bud, do only use water ! If there is any defect on the electronics, please return the device for repair to M&C.

17 LIST OF SPARE PARTS

Flow alarm unit FA... (C) Consumable parts, (R) Recommended spare parts and (S) Spare parts

Recommended quantity for operation time of:

Part-No.: Description (V/E/T) 1 2 3 years

________________________________________________________________________________ Sensor FA-1bi: 02 E 1000 Optical flow sensor FA-1,bi with 3m connection cable (S) 1 02 E 1010 Optical flow sensor FA-1,bi with 6m connection cable (S) 1 02 E 9000 Connection cable FA.., per meter (S)

Gas sampling and conditioning technology 5-6.10-ME

18 ANNEXE

Circuit diagram FA1.1, 115/230V Circuit diagram FA1.1, 24VAC Circuit diagram FA1.4, 115/230V Circuit diagram FA1.4, 24V AC/DC Circuit diagram K-FA (-H)

For further product documentation, please see our internet catalogue:

www.mc-techgroup.com

Gas sampling and conditioning technology 5-6.10-ME