Reference information | ||||||
Circuit number | ||||||
Fuse number | ||||||
Drawing number | ||||||
Fuse length: | ||||||
Visual inspection of heating cable length | ||||||
No signs of moisture or rust formation | Initial | |||||
Date | ||||||
Correct electrical connections | Initial | |||||
Date | ||||||
Correct earthing | Initial | |||||
Date | ||||||
Electrical control of heating cable length | ||||||
Megaohmtest (500V) (bypass-control) | Meg ohms | |||||
Date | ||||||
Current measurement (self-limiting cable at operating temperature) Compare with mark or electrical drawing |
Ampere | |||||
Amb.temp. | ||||||
Date | ||||||
Control of the resistance of the length | Resistance | |||||
Date | ||||||
Control/Temperature transmittor | ||||||
Temperature control correctly settled | Set point | |||||
Date | ||||||
Transmitter in function | Initial | |||||
Date | ||||||
Sealings and junction boxes, intact | Initial | |||||
Date | ||||||
Control of thermal insulation | ||||||
Passages in the outer sheath of the insulation, intact | Initial | |||||
Date | ||||||
The insulation is complete, dry and protected for the weather | Initial | |||||
Date |
Date:…………………………………………………………… Signature:………………………………………………………
Maintenance
VÄRMEKABELTEKNIK recommend that heating cable system for keeping warm gets a continuous inspection in form of current measurement (control with current pliers). Also the thermostat/regulators should be function tested. Repair or replace all damaged heating cables and connections.
Note the undertaken repairs and measurings in the maintenance protocol.