Precision Digital Corporation EXDIRECT EX Series Reference Manual

A PRECISION DIGITAL CORPORATION BRAND
233 SOUTH ST, HOPKINTON, MA 01748 USA
(774) 233-7061
EX SERIES ENCLOSURE - REFERENCE MANUAL
DISCLAIMER
The information contained in this document is subject to change without
notice. ExDirect makes no representations or warranties with respect to the
contents hereof; and specifically disclaims any implied warranties of
merchantability or fitness for a particular purpose.
This product is not recommended for life support applications or applications
where malfunctioning could result in personal injury or property loss. Anyone
using this product for such applications does so at his/her own risk. ExDirect
shall not be held liable for damages resulting from such improper use.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
SAFETY INFORMATION
Read complete instructions prior to installation.
Installation and service should be performed only by trained service
personnel.
Verify that the operating atmosphere of the installation is consistent with the
appropriate hazardous locations certifications.
Substitution of components may impair hazardous location safety.
Service requiring replacement of components must be performed at the
factory.
CAUTION
Risk of electric shock or personal injury.
Failure to follow installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
Never remove the cover in explosive environments when the circuit is live.
Cover must be fully engaged to meet flameproof/explosion-proof
requirements.
The user/installer shall implement precautions to prevent the build-up of
electrostatic charge, e.g. locate the equipment where a charge-generating
mechanism (such as wind-blown dust or high-pressure steam) is unlikely to
be present and only clean with a damp cloth.
Use suitably certified and dimensioned cable entry devices and/or plugs.
Flameproof joints are not intended to be repaired.
The EX Series of enclosures have no serviceable parts.
If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
WARNINGS (AVERTISSEMENTS)
OPEN CIRCUIT BEFORE REMOVING COVER (OUVRIR LE CIRCUIT
AVANT D'ENLEVER LE COUVERCLE)
POTENTIAL ELECTROSTATIC CHARGING HAZARD – SEE
INSTRUCTIONS (RISQUE POTENTIEL DE CHARGEMENT PAR
ÉLECTROSTATIQUE - VOIR LES INSTRUCTIONS)
SEAL REQUIRED WITHIN 18 INCHES (JOINT EXIGE DANS LES 18
POUCES)
sales@exdirect.com
C US
APPLICATION
The EX Series of component enclosures form the basis for certification of a
unit or protection system for use in hazardous areas other than Zone 0 or
Zone 20.
MODIFICATION
Flameproof joints are not intended to be repaired. Please contact the factory.
The EX Series enclosures shall have no holes, whether for mechanical or
electrical purpose and whether blind or clear, drilled through the enclosure,
with the exception of the internal wall of the EX550.
User Modification Instructions: 1/2-14 NPT or 3/4-14 NPT openings, with a
minimum of 5 full threads, may be drilled and tapped through the 10.6 mm
(0.4 in) thick internal wall for installation of a suitably certified bushing, in
order to maintain the isolation between chambers.
INSTALLATION
Flameproof joints are not intended to be repaired. Please contact the factory.
Unpacking
Remove the enclosure from its box. Inspect the packaging and contents for
damage. Report damages, if any, to the carrier.
Mounting
All enclosures (except for the EX550) has a slotted mounting flange that may
be used for pipe mounting or wall mounting. Alternatively, the enclosure may
be supported by the conduit using the conduit holes.
Aluminum models must not be installed in locations where they may be
subjected to conditions (such as high-pressure steam) which might cause a
build-up of electrostatic charges on non-conductive surfaces.
Earthing / Grounding
When the enclosure is properly mounted, a earthing / grounding conductor,
10 AWG or 6.6 sq mm maximum, must be installed to the external ground
terminal's green M4x0.7 pan head screw.
Locking Set Screw
The locking set screw is intended to prevent the removal of the enclosure's
cover in a explosive environment without the use of a tool. Using a M2 hex
wrench, turn the screw clockwise until the screw contacts the enclosure's
base. Turn the screw an additional 1/4 to 1/2 turn to secure the cover.
Conduits
Conduit sealing fittings (entry closure devices), approved for the specific
hazardous location where the enclosure is used, must be installed within 18"
(450 mm) of the enclosure.
Suitable thread sealing compound (non-setting, non-insulating, non-
corrosive, not solvent based, suitable for the ambient rating) must be used at
the NPT conduit entries to achieve the IPx8 rating while maintaining the Ex
protection concept.
A minimum of five (5) full threads engagement is required for all NPT device
connections/ threaded openings. A minimum of seven (7) full threads
engagement is required for all Metric device connections/ threaded openings.
All unused openings must be closed with suitably certified and dimensioned
cable entry devices and/or plugs.
MAINTENANCE
If needed, clean only with a damp cloth.
If needed, corrosion inhibiting grease such as Petrolatum or soap thickened
mineral oil (shall be of a type that does not harden because of ageing, does
not contain an evaporating solvent, and does not cause corrosion of the joint
surfaces) can be added to the base to lid threads.
LIMITED WARRANTY
Precision Digital Corporation (ExDirect) warrants these products against
defects in material or workmanship for a period of one year from the date of
shipment from the factory. Precision Digital's liability under this limited
warranty shall not exceed the purchase value, repair, or replacement of the
defective unit. See Warranty Information and Terms & Conditions on
www.predig.com for complete details.