GuaRdboX
-
series
IOM (
Installation, Operation & Maintenance Manual) 0100-ENG
rev.5
1
Eisenbau s.r.l. a socio unico
Via T.A:Edison, 16 20090 Cusago (MI) Italy
Phone : +390293562116 Fax: +390293567735
Guardbox production unit : Via XXIV Maggio, 13
25017 – Sedena di Lonato (BS)
Phone : +390309131240 Fax: +390309130946
1. Introduction:
This instruction manual contains important information regarding the safety instructions, installation, operation, maintenance and storage of
the “Guardbox” limit switch boxes.
The limit switch boxes may only be mounted, wired and installed by qualified and trained personnel, according to International standards
requirements for hazardous areas. If you require any additional information or assistance, please contact the manufacturer or its
representative. All contacts are listed in the footnote together with the QR code for an easy access to the complete product documentation.
Please read these instructions carefully before proceeding with the limit switch box installation and save them for future reference.
2. Product description:
Guardbox Limit switch boxes are electromechanical devices ideal for monitoring the remote operation of industrial valves in plants,
designed and manufactured for demanding application in extreme environments and where there are requested high standards for safety
and reliability products. The Guardbox devices are used to control the position of the valve and provide high accuracy electrical feedback
signal of valve status to plant control systems. Guardbox devices are equipped in standard configuration with a 3D high visibility position
indicator that represent a true indication of valve position. The indicator is visible on all 4 sides and is fully adjustable on 360° without
disassembly. Guardbox limit switch boxes are built to be installed on valves or actuators which drive the process valves from closed to
open position (Normal acting) or from open to closed position (Reverse acting) . Normal acting is considered full CW when the process
valve is closed and CCW when the process valve is open. Reverse acting is full CW when the process valve is open and CCW when the
process valve is closed.
3. Safety instructions:
Guardbox Limit switch boxes are electromechanical devices ideal for monitoring the remote operation of industrial valves in plants,
designed and manufactured for demanding application in extreme environments and where there are requested high standards for safety
and reliability products. The Guardbox devices are used to control the position of the valve and provide high accuracy electrical feedback
signal of valve status to plant control systems. GD Guardbox explosion proof Exd series limit switch box are specially projected and built to
withstand the most extreme weather conditions and be installed into hazardous areas with flammable gases, vapours and mist, according
with the relevant Union harmonization legislation of ATEX Directive 2014/34/EU, and to IECEx Scheme and applicable standards.
Reference standards are the IEC60079-0:2011 (Ed6.0), IEC60079-1:2014 and IEC60079-31:2013 (Ed2.0), and the applied marking of
Group, category and applied Ex protection is:
Ex – Equipment Marking II2G Ex db IIC T6…T4 Gb
II2D Ex tb IIIC T85°C…T135°C Db
Ex – Marks
II 2 G Ex db IIC T6 T5 T4 Gb
II 2 D Ex tb IIIC T85°C T100°C T135°C Db
On the outside of the Exd box cover there are two metal nameplates on which are etched and marked the Ex-marking and all the
information and references about the manufacturer, electrical and ambient range of use of the specific product, together with a Data Matrix
code for a quick link and easy access to the product documentation including wiring diagram, drawings, datasheet and certificates:
gas
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