Commissioning and
Preventive Maintenance
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8.2 Preventive Maintenance
Recommended maintenance for nVent heat-tracing
systems consists of performing the commissioning
tests on a regular basis. Procedures for these tests are
described in Section 9. Systems should be checked
before each winter.
If the heat-tracing system fails any of the tests, refer
to Section 10 for troubleshooting assistance. Make
the necessary repairs and replace any damaged cable
immediately.
De-energize all circuits that may be affected by
maintenance.
Protect the heating cable from mechanical or thermal
damage during maintenance work.
The recommended cable installation methods allow
for extra cable at all pipe fixtures (such as valves,
pumps, and pressure gauges) that are likely to incur
maintenance work.
Maintenance records
The “Installation and Inspection Record,” (refer to
Section 11), should be filled out during all maintenance
and repair work, and kept for future reference.
Repairs
Use only RAYCHEM cable and components when
replacing any damaged heating cable. Replace the
thermal insulation to original condition or replace with
new insulation, if damaged.
Retest the system after repairs.
WARNING: Damage to cables or components
can cause sustained electrical arcing or fire. Do not
attempt to repair damaged heating cable. Do not
energize cables that have been damaged by fire.
Replace damaged cable at once by removing the entire
damaged section and splicing in a new length using
the appropriate RAYCHEM splice kits. Do not reuse
grommets. Use new grommets whenever the heating
cable has been pulled out of the components.
