AFRISO DMU 30 Manual de instrucciones - Página 2

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4.3 Electrical installation

Establish the electrical connection of the device according to the

technical data shown on the manufacturing label, the following

table and the wiring diagram.

Pin configuration:

Electrical

M12x1

ISO 4400

connections

(4-pin)

Supply +

Supply -

Shield

ground pin

Electrical

Cable colours

connections

(IEC 60757)

Supply +

WH (white)

Supply -

BN (brown)

GNYE

Shield

(green-yellow)

Wiring diagram:

Supply +

Supply -

5. Commissioning

Danger of death from explosion,

airborne parts, leaking fluid,

electric shock

Explosion hazard if the operating

voltage is too high (max. 28 V

DANGER

Operate the device only within the

specification! (according to data sheet

and EU-type examination certificate)



The device has been installed properly.



The device does not have any visible defect.

6. Maintenance

Danger of death from airborne parts,

leaking fluids, electric shock

Always service the device in a

depressurized and de-energized

DANGER

condition!

Danger of injury from aggressive fluids

or pollutants

Depending on the measured medium,

this may constitute a danger to the

operator.

WARNING

Wear suitable protective clothing

e.g. gloves, safety goggles.

If necessary, clean the housing of the device using a

moist cloth and a non-aggressive cleaning solution.

During the cleaning processes, note the compatibility of the

cleaning media used in combination with the media-wetted

materials of the pressure measuring devices. Permissible

concentrations and temperatures must be observed.

Verification/validation by the user is essential.

Deposits or contamination may occur on the diaphragm/

pressure port in case of certain media. Depending on kind and

quality of the process, suitable cyclical maintenance intervals

must be specified by the operator. As part of this, regular checks

must be carried out regarding corrosion, damage of

diaphragm/seal(s) and signal shift. A periodical replacement of

the seal(s) may be necessary.

7. Troubleshooting

Danger of death from airborne parts,

leaking fluids, electric shock

If malfunctions cannot be resolved, put

the device out of service (proceed

DANGER

according to chapter 8 up to 10)

Danger of death from explosion

As a matter of principle, work on

energized parts, except for intrinsically

safe circuits, is prohibited while there is

DANGER

an explosion hazard.

In case of malfunction, it must be checked whether the device

has been correctly installed mechanically and electrically. Use

the following table to analyse the cause and resolve the

malfunction, if possible.

Fault: no output signal

Possible cause

Fault detection / remedy

Connected incorrectly

Checking of connections

Checking of all line

Conductor/wire breakage

connections.

Checking of ammeter

Defective measuring device

(miniature fuse) or of analogue

(signal input)

input of your signal processing

unit

Fault: analogue output signal too low

Possible cause

Fault detection / remedy

Checking of load resistance

Load resistance too high

(value)

Checking of power supply

Supply voltage too low

output voltage

Checking of the power supply

Defective energy supply

and the supply voltage being

applied to the device

Fault: slight shift of the output signal

Possible cause

Fault detection / remedy

Diaphragm of senor is

Checking of diaphragm; if

severely contaminated,

necessary, send the device to

calcified or crusted

AFRISO for cleaning

Fault: large shift of the output signal

Possible cause

Fault detection / remedy

Diaphragm of sensor is

Checking of diaphragm; when

damaged (caused by

damaged, send the device to

overpressure or mechanically)

AFRISO for repair

Fault: wrong or no output signal

Possible cause

Fault detection / remedy

Checking of cable; pitting

corrosion on the stainless-steel

Cable damaged mechanically,

housing as a result of damage

thermally or chemically

on cable; when damaged, send

the device to AFRISO for repair

8. Removal from service

Danger of death from airborne parts,

leaking fluids, electric shock

Disassemble the device in a

depressurized and de-energized

DANGER

condition!

Danger of injury from aggressive

media or pollutants

- Depending on the measured medium,

this may constitute a danger to the

operator.

WARNING

- Wear suitable protective clothing

e.g. gloves, goggles.

NOTE -

After dismounting, mechanical connections must be

fitted with protective caps.

9. Service / repair

Information on service / repair:

www.afriso.com

[email protected]

Service phone: +49 7135 102-211

9.1 Recalibration

During the life-time of a transmitter, the value of offset and span

may shift. As a consequence, a deviating signal value in

reference to the nominal pressure range starting point or end

point may be transmitted. If one of these two phenomena occurs

after prolonged use, a recalibration is recommended to ensure

furthermore high accuracy.

9.2 Return

Danger of injury from aggressive

media or pollutants

- Depending on the measured medium,

this may constitute a danger to the

operator.

WARNING

- Wear suitable protective clothing

e.g. gloves, goggles.

Before every return of your device, whether for recalibration,

decalcification, modifications or repair, it has to be cleaned

carefully and packed shatter-proofed. You have to enclose a

notice of return with detailed defect description when sending

the device. If your device came in contact with harmful

substances, a declaration of decontamination is additionally

required. Appropriate forms can be downloaded from our

homepage.

Download these by accessing www.afriso.com or request them:

[email protected] | phone: +49 7135 102-211

In case of doubt regarding the fluid used, devices without a

declaration of decontamination will only be examined after

receipt of an appropriate declaration!

10. Disposal

Danger of injury from aggressive

media or pollutants

- Depending on the measured medium,

this may constitute a danger to the

operator.

WARNING

- Wear suitable protective clothing

e.g. gloves, goggles.

The device must be disposed of according to the

European Directive 2012/19/EU (waste electrical

and electronic equipment). Waste equipment must

not be disposed of in household waste!

NOTE -

Dispose of the device properly!

11. Warranty terms

The warranty terms are subject to the legal warranty period of 24

months, valid from the date of delivery. If the device is used

improperly, modified or damaged, we will rule out any warranty

claim. A damaged diaphragm will not be accepted as a warranty

case. Likewise, there shall be no entitlement to services or parts

provided under warranty if the defects have arisen due to normal

wear and tear.

12. EU declaration of conformity / CE