Oval ALTI mass CA00A - 10.6 Precautions on the Explosionproof Specification

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10.6 Precautions on the Explosionproof Specification
10.6.1 About the explosionproof
Special conditions to use the explosionproof equipment safely:
- Prohibition of altering the part constituting the explosionproof performance
Part constitutes the flameproof: Display (glass) – body/terminal lid – parts screwed on the body
Side lid – spigot joint of the body
- Special class of the fastening screw to fix the side lid shall be “A-50”.
- Transmitter shall be used only in the position specified in the instruction manual.
- Threaded electric conduit shall engage 8 threads min. completely.
- Electric capacitance of the label shall be 1nF max. and to avoid charging of static electricity. Use a
wet cloth to clean the label.
10.6.2 About Cable Gland
■ TIIS, ATEX, IECEx, EAC and NEPSI explosionproof
Please use attached cable gland supplied by OVAL only. Do not use cable gland other than that.
In addition, please refer to the drawing below for the torque value of each part when install the cable
gland and pay attention not to cause slackness, pullout and so on. If there is a gap between packing
and cable, rain water infiltrates and may results in unexpected accident.
G3/4
G3/4
Gland
Clamp
Union coupling
Rubber packing
Gland’s tightening torque: 16 to 36N・m
Clamp’s tightening torques: 1N・m
Screw: M4
Fig.10.1
CAUTION
(1) Give the passage of cable through rubber packing, screw in the gland and push the
packing. Screw in the gland until the cable stops.
(2) A hook is attached to the cable gland. After step (1), screw on the clamp with M4 screw
and fix the cable.
Caution at Assembling
Please contact us in the case the ambient temperature exceeds max. ambient temperature in the graph.