INSTALLATION
ELECTRICAL POWER MUST BE TURNED OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
1 EIH Instrument enclosures are furnished with 3/4 inch NPT offset through feed cast hubs for conduit entries (Use Cooper
Crouse-Hinds RE21-SA to reduce to 1/2 inch hubs )
2 Secure the enclosure to the conduit system If the enclosure has mounting feet, select a mounting location that will
provide sufficient strength and rigidity to support the enclosure as well as the enclosed device and wiring
SELECT A MOUNTING LOCATION SO THAT THE ENCLOSURE WILL NOT BE SUBJECTED TO IMPACT BY HEAVY OBJECTS.
IMPACTS CAN DAMAGE ENCLOSED DEVICES OR GLASS LENS.
3 Install Cooper Crouse-Hinds EYS sealing fittings required by Section 501-5 and/or 502-5 of the National Electrical Code and
Section 18 of the Canadian Electrical Code or any other applicable local codes and when enclosure is installed in Class I
Group B hazardous locations (For CSA Group C applications, unsealed conduit lengths must not exceed
five feet or 152 cm )
THE HAZARDOUS LOCATION INFORMATION SPECIFYING CLASS AND GROUP LISTING OF EACH INSTRUMENT
ENCLOSURE IS MARKED ON THE NAMEPLATE OF EACH ENCLOSURE.
ALL UNUSED CONDUIT OPENINGS MUST BE PLUGGED. PLUG UNUSED CONDUIT OPENINGS WITH COOPER CROUSE-
HINDS PLG2. PLUGS MUST BE A MINIMUM OF 1⁄8 INCH THICK AND ENGAGE A MINIMUM OF FIVE FULL THREADS.
4 Unthread instrument (and power side) covers and carefully set aside to prevent damage to the cover threads and glass
lens (when glass lens cover is used)
5 Pull wires into enclosure making certain they are long enough to make the required connections and to remove the
instrument or power supply if servicing is required Install instrument and power supply, if applicable, and make all
electrical connections
OTEE:
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When installing device, be sure to check instrument dimensions to avoid interference with clamping ring on glass
lens and the cover on standard units
6 Test wiring for correctness by checking continuity and also check for unwanted grounds with insulator resistance tester
Make sure test equipment being used will not damage instrument to be housed in the EIH Instrument enclosure
7 Carefully re-thread cover to enclosure housing Tighten cover until cover flange contacts body face
USE CARE TO PREVENT DIRT, GRIT OR OTHER FOREIGN MATERIAL FROM LODGING ON THREADS. IF SUCH MATERIAL
SETTLES ON THREADS, CLEAN WITH KEROSENE OR STODDARD SOLVENT*, THEN RE-LUBRICATE WITH COOPER
CROUSE-HINDS TYPE STL THREAD LUBRICANT.
8 Tighten cover set screws to prevent cover from loosening under vibration
* TO AVOID THE POSSIBILITY OF AN EXPLOSION, OXIDATION AND CORROSION, DO NOT USE GASOLINE OR SIMILAR
SOLVENT.
TO MAINTAIN THE EXPLOSION PROOF INTEGRITY OF THE ENCLOSURE WITH A SCREW IN A TAPPED MOUNTING PAD
HOLE, THERE MUST BE A MINIMUM OF 1⁄16 INCH OF MATERIAL BETWEEN THE DRILL POINT AND THE BACK WALL. IF
FOR ANY REASON A SCREW WILL NOT BE THREADED INTO THE DRILLED HOLE, A MINIMUM OF 1⁄8 INCH OF MATERIAL
MUST REMAIN BETWEEN THE DRILL POINT AND THE BACK WALL.
Installation
Page 5
March 2017
DSY-PM-00277-EN-03
