Electric heat trace system quarterly maintenance checklist

Setpoints and alarms checked at the controller

Maintain temperature and alarm settings as intended, no standing alarms, each circuit showing energized on its own indicator.

Each circuit's control mode matched to its duty

Freeze-protection circuits armed on ambient or pipe sensing ahead of the freeze season, process maintain circuits controlling year round, none forced on or off in manual.

Pipe or ambient sensor placement checked where the circuit has one

Pipe sensor lead entering the lagging at the point on the installation record, ambient sensor shaded and clear of exhaust or other heat, readings plausible at the controller.

Ground-fault protection status verified per circuit

GFEP not tripped or bypassed on any circuit, trip history noted where the controller logs it.

Energized-work procedure set before the current readings

Clamp readings taken at the heat trace panel or controller under the site's energized-work procedure with its PPE, covers removed only as that procedure allows.

Per-circuit current draw read

Draw measured on each circuit and compared against the expected value for its length, a low or zero reading flagged as a break.

Insulation and lagging condition over the run checked

Cladding intact and dry along the traced run, no crushed or water-logged insulation, coverage present at valves, flanges and hangers.

Power connection kits closed, glanded and dry

Each power connection box lid closed and gasketed, cable gland tight, conduit or pigtail intact, no water staining or rust at the box. Left closed on the round.

End seals and splice or tee kits sound where they exit the lagging

Each end seal, splice and tee kit visible at the cladding is intact, not crushed or pulled, cap or boot in place and no bare cable showing. Opened only on the annual.

Electric traced labels present on the insulation

Caution labels marking the pipe as electrically traced visible on the cladding along the run and at valves as the installation record shows, legible and not painted over.

Heat trace panel or controller enclosure closed and dry

Door latched and gasketed, circuit schedule posted on or beside it, no water, heat staining or odor at the enclosure.

Remote alarm or monitoring point matches the controller

Where circuits report to building automation or a remote annunciator, alarms and circuit status shown there match the controller, with nothing suppressed.

Owner's reports of frozen or cold lines collected

Owner's staff asked about frozen lines, slow drains or low process temperatures since the last round, each tied to its circuit number on the schedule.

Every circuit left in service and findings reported

All circuits back at their setpoints with none forced off, and any tripped circuit, low current or damaged lagging reported to the owner by circuit number.