Operating; Trouble Shooting - nVent RAYCHEM EM4-CW Manuel D'installation

OPERATION
Initial start-up
Electrical requirements
Complete all electrical testing following
applicable local codes and practices. Inspect
all wiring for conformance to design drawings.
Check for correct rating on all protection devices.
Controller checks
Check controller in accordance with the
instructions provided with the unit.
Resistance tests
Perform final resistance test to ensure that the
connection lead and supply cable have not been
damaged since installation.
General operation and maintenance
TROUBLE SHOOTING GUIDE
Warning: Isolate supply before working on any part of the electrical system.
Problem A : Over-current protection (circuit breaker) trips or blows
Probable causes
Electrical fault at:
• connection lead
• damaged heating cable
Protection undersized
Defective protection
20 | nVent.com
The system has no moving parts and therefore
requires minimum maintenance. Local
maintenance codes and requirements for
electrical equipment should be complied with.
Circuit breakers should be checked periodically.
Residual current devices (rcd) should be tested at
least annually.
Periodically inspect the system controls.
Operate the controls to ensure that they function
correctly.
Max. exposure temperature for heating cable:
65°C. Installer must supply operator/owner with
the layout drawing.
Correction
Locate and rectify the fault and reset or replace
protection.
Re-establish what the current loads are going to
be and install new protection (NB: if protection
is replaced, ensure it is compatible with the
supply cable).
Replace