Emerson FG-110 manual Use, Maintenance and repair

Softing Linking Device –

Manual for Configuration, Installation and Maintenance

k)To circuits of Zone 2 only such equipment may be connected that is suitable for operation in this zone and has been certified accordingly (suitable documents have been provided).

l)The devices have to be protected from UV light exposure.

m)The device has to be connected at low inductance with the PE of the system.

n)Spare parts are ordered as complete units giving the material number stated on the device (marking, type label).

o)Do not put stress on the system by bending or torsion.

p)Inside the potentially explosive atmospheres assembly shall only be performed taking the locally applicable rules of erection into account. The following hints have to be observed (incomplete):

(1)Assembly and maintenance to be done only of atmosphere is Ex-free and a hot work permit is in place;

(2)Additional precautions have to be taken if the presence of hydrosulphide, ethylene oxide and/or carbon monoxide is to be expected: those substances are of a very low ignition energy;

(3)Where these substances are present and where any substance of explosion group IIC is present, and where yet a potentially explosive atmosphere is expected to be present, only non-sparking tools shall be used!

9.6 Use

The linking device is only approved for intended and appropriate use. In case of non-compliance, the warranty and manufacturer’s liability do no longer apply!

a)Only such auxiliary components may be used in potentially explosive atmospheres which meet all requirements of European and national directives and legislation.

b)The environmental conditions specified in the manual have to be followed strictly.

c)The linking device is not to be used in systems where cathodic systems for corrosion protection are in place. Although special precautions may make that possible (additional earthing bridges), the manufacturer has to be consulted in each case.

d)The operator has to provide measures for protection against lightning.

e)The maximum surface temperatures depend on the circumstances of installing the equipment, and the customer or operator is responsible for those. During intended operation no temperature increases of > 20 K are to be reached at the outside parts of the enclosure. Thus temperature T4 is maintained.

f)All outside parts are made from suitable low-sparking materials. Nevertheless, the operator has to inspect any ignition hazards that may be caused by sparks when operating the entire machine. Parts containing light metal alloys have to be installed in a way that they are protected against external impact.

g)In explosion group IIC and Zone 1 no projected plastic surfaces > 20 cm³ are allowed; in IIB or dust-Ex, 100 cm² may be reached.

h)Dust settlements have to be removed regularly.

i)The company installing the device has to ensure that the transient characteristic is limited to 40% above the service voltage.

j)Icing is not permitted!

9.7 Maintenance and repair

Definition of terms according to IEC 60079-17:

Maintenance: defines a combination of any actions carried out to retain an item in, or restore it to, conditions in which it is able to meet the requirements of the relevant specification and perform its required functions.

Inspection: defines any action comprising careful scrutiny of an item carried out either without dismantling, or with the addition of partial dismantling as required, supplemented by means such as measurement, in order to arrive at reliable conclusion as to the condition of an item.

Visual inspection: defines an inspection which identifies, without the use of access equipment and tools, those defects, such as missing bolts, which will be apparent to the eye.

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