Troubleshooting Guide - Raychem EM4-CW Installations- Und Betriebshandbuch

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.
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
General operation and
maintenance
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
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