Installation and Maintenance Requirements for Explosion-Proof Junction Boxes
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The installation and maintenance of explosion-proof junction boxes must comply with the following specifications13:
Installation Procedures
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Strict Adherence to Manuals
Operate according to the manufacturer’s instructions to ensure all terminals are correctly connected13． -
Location Compliance
Select installation sites meeting industry standards (e.g., IECEx/ATEX zones) and restrict non-professional access13． -
Tool Restrictions
Metallic or conductive tools should be prohibited to prevent short circuits during operation18．
Maintenance Protocols
| Task | Key Actions | Critical Notes |
|---|---|---|
| Routine Inspection | Clean surfaces/internal components; check screw tightness and wiring integrity13 | Quarterly recommended |
| Component Handling | Replace/repair electrical parts only via certified technicians after de-energizing15 | Unauthorized modifications void safety certifications |
| Record Keeping | Log all operations (date/actions/personnel); report abnormalities immediately16 | Essential for compliance audits |
Core Safety Measures
- Power Isolation: Mandatory circuit shutdown before maintenance36．
- Grounding Integrity: Verify permanent earthing to prevent electrostatic hazards46．
- Seal Preservation: Maintain cable gland compression and ingress protection (IP rating) during reassembly68．
Critical Reminder: Always engage certified professionals for installation and servicing to preserve explosion-proof integrity