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Chapter 2: Installation
■ Flameproof universal elbow installation procedure
The installation procedure for the flameproof universal elbow is shown below.
Step Procedure
1 Referring to the diagram below, position the lock nut so that its edge is aligned with the
edge of the groove for the O-ring.
Figure 2-28. Alignment of Lock Nut Edge and O-Ring Groove Edge
2
Screw the flameproof universal elbow into the terminal box conduit connection until the
lock nut meets the conduit connection.
Note
• Apply adequate waterproofing to these parts.
3
Turn the flameproof universal elbow in the direction that loosens it until it is in the
desired direction.
Note
• Do not loosen the elbow by more than one turn.
4 Tighten the lock nut using the special-purpose tool.
■ Cable-pulling equipment for non-TIIS explosion-proofing
When using this device after it has received explosion-proofing certification other than
TIIS explosion-proofing, carry out cable-pulling work in accordance with local guide-
lines for electrical wiring work.
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