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4. SYSTEM OPERATION
Operate the system in accordance with the control and monitoring instructions.
5. SYSTEM MAINTENANCE
The system has no moving parts and therefore requires minimum maintenance. Refer to and comply with applicable codes and requirements
for the maintenance of electrical equipment. Test all ground-fault breakers per manufacturer's instructions. Periodically inspect the system
controls by operating them to ensure that they function correctly.
6. SYSTEM TROUBLESHOOTING
Trouble Shooting Guide
WARNING: Disconnect all power before working on any part of the electrical system.
Symptom
Probable Causes
Insulation resistance less
1. Rain or high humidity.
than expected
2. Nicks or cuts in heating wire or cold lead, with
3. Kinked or crushed heating wire or cold lead.
4. Physical damage to heating wire or cold lead is
5. Presence of moisture in terminations or
6. Damaged termination.
Resistance lower than
1. Conductor(s) shorted to sheath between the
expected
termination and the end seal.
2. Both conductors shorted together between the
Resistance is infinite
1. Conductor is open circuited.
Resistance is zero
1. Conductor(s) shorted to sheath at termination or
hot/cold splice.
Circuit breaker trips
1. Circuit breaker undersized.
2. Defective circuit breaker.
3. Short circuit in electrical connections.
4. Excessive moisture in connection boxes.
5. Nicks or cuts in heating wire or cold lead, moisture
6. Kinked or crushed heating wire or cold lead.
7. GFEP device trip level too low (5 mA used instead of
30 mA) or miswired.
moisture present.
causing a direct short from conductor to sheath.
connections.
termination and the end seal.
present.
Corrective Action
(1)
Dry tails and face of seal. Inspect power
connection box for moisture or signs or
tracking. Dry out connections and retest.
(2, 3) Fault locate to find damaged section of wire. If
damaged, repair or replace heating wire or cold
lead.
(4)
Check for visual indications of damage
around any area where there may have been
maintenance work. Look for cracked or
damaged concrete or asphalt or any evidence
of work on the slab surface. Repair or replace
damaged sections of heating wire, cold lead or
terminations.
(5)
Dry out cold lead and/or connections and
replace termination if necessary.
(6)
Replace termination.
(1, 2) Fault locate to find damaged section of wire.
Repair or replace damaged sections of heating
wire.
(1)
Fault locate to find damaged section of wire.
Repair or replace damaged sections of heating
wire, cold lead, or terminations.
(1)
Fault locate to find damaged section of wire.
Repair or replace damaged hot/cold splice or
termination.
(1)
Recalculate circuit load current. Resize breaker
and wiring as required.
(2)
Repair or replace breaker.
(3)
Locate and repair the incorrect connections.
(4)
Install drains in connection boxes as required.
Dry cold lead and replace terminations if
required.
(5,6) Fault locate to find damaged section of wire.
Repair or replace damaged sections of heating
wire, cold lead, or terminations.
(7)
Replace 5 mA GFEP device with 30 mA GFEP
device. Check the GFEP wiring instructions.
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