Max-machinery Explosion Proof Install User Manual download pdf

an ISO 9001:2008 certified company

EXInstallEnglish_001Q2.pdf • Rev2 • © 08/14/2013 Max Machinery, Inc. `

Installation Instructions — Hazardous Locations

Applies only to Max Model EX295 and EX296 Transmitters with explosion proof certication.

These transmitters provide protection via a ame proof housing and through current limiting to the circuit board:

Must wire with a class 2 power supply (See table for loads page 3).

Meets US and Canadian Haz-Loc classications, Class I, Div 1, Groups C and D, Tx

As well as ATEX/IECEx II 2 G Ex d IIB Tx Gb

Certication numbers Demko 11 ATEX 1013058X and IECEx UL 10.0048X

Mechanical Installation

The outer housing freely rotates to align the conduit hole with your electrical connection point. If the transmitter is

already attached to the meter skip to step 5:

1. To attach the transmitter to the ow meter, apply a small amount of low strength thread adhesive, such as Loctite™,

on the threads and screw the transmitter onto the exterior threads on top of the ow meter.

2. Locate the locking set screw below the conduit hole and using a 3/32" hex wrench remove it. Rotate the outer housing

clockwise until the screw hole lines up with a hole in the inner housing. (Inserting an Allen key into the threaded hole

while rotating the housing can help in nding the point of alignment.) Now re-insert the set screw and hand-tighten it to

lock the inner and outer housing together.

3. Finish tightening the transmitter onto the meter by applying a torque of 2 to 5 ft.-lb. (2.7 to 6.78 N-m).

4. Now back out the locking set screw until it is ush with the surface of the transmitter.

5. The housing can now be rotated to align the conduit port in the desired direction.

6. To remove the lid for wiring, remove the safety screw at the edge of the lid and then remove the cap using a 3/8”

socket drive.

7. Install conduit. Within 18” of the housing install a conduit stop and fully seal with potting compound.

8. Connect wires to terminal block as shown below, using 2 mm screw driver.

9. A case ground terminal is provided internally, but if grounded metallic conduit is not used, then one of the external

grounds below the conduit tting must be used. For metric- use either a 6 or 8 mm long stainless steel M5 x 8.0 bolt. For

inch measurement – use either a 1/4” or 5/16” long stainless steel #10-32 bolt.

10. Reattach cap and tighten to 40 in-lbs to seal enclosure. Install safety lock screw at the edge of the lid and hand

tighten.

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Summary of Contents

Page 1 - Mechanical Installation

an ISO 9001:2008 certified companyEXInstallEnglish_001Q2.pdf • Rev2 • © 08/14/2013 Max Machinery, Inc. ` Installation Instructions — H

Page 2 - Electrical Installation

33A Healdsburg AvenueHealdsburg, CA 95448T +1 707.433.2662F +1 707. 433.1818Max Machinery, Inc.maxmachinery.comEXInstallEnglish_001Q2.pdf • Rev2 • © 0

Page 3 - Temperature Classication

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Page 4 - EC Declaration of Conformity

33A Healdsburg AvenueHealdsburg, CA 95448T +1 707.433.2662F +1 707. 433.1818Max Machinery, Inc.maxmachinery.comEXInstallEnglish_001Q2.pdf • Rev2 • © 0