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Operation and Installation Manual PBTC-300
12
Maintenance
WARNING
Risk of fire and electric shock from electrical trace heating system
Risk of injury due to electric current
When starting installation and maintenance work, disconnect all circuits from the power supply and check that they are
voltage-free!
Operate electrical trace heating systems with residual current protection device!
The junction box with thermostat module is maintenance-free. However, the following inspection and maintenance activities are re-
quired for repair work after malfunctions or defects or conversions:
Check the thermal insulation for possible damage, missing seals, cracks, damage to the outer sheath, missing thermal insulation
feed-throughs for heating lines and cables, infiltrated water or chemicals. In case of damage to the thermal insulation, check the
heating cable for possible to check for damage.
Damaged heating cables must be replaced with new ones, worn parts must be replaced (e.g. seals, locking plates, etc.). After a
heating cable has been removed from the base of the junction box, a new suitable CAK kit must be used when installing a new heating
cable.
Check the thermostat module connection cables and Resistance Temperature Device for damage and to ensure that they are installed
in such a way that they cannot be mechanically damaged.
Wipe off any dirt with a damp cloth, do not use cleaning agents or solvents. Observe the danger of electrostatic charge, do not damage
cable connections. Absorb any existing moisture. Find the cause of the moisture penetration and remove it.
Check mechanical and electrical condition: Check cables and cable connections for faultlessness and good condition (signs of over-
heating, loose cables, loosened insulation). Eliminate faulty condition.
The thermostat module contains no parts that can or must be repaired or replaced. In the event of damage, malfunction or when
100% of the service life is reached, the thermostat module must be replaced. To do this, it must be switched off, the connecting cables
disconnected and the thermostat module dismantled. It must not be operated any further.
Check the junction box for corrosion damage and mechanical damage. Make sure that all housing covers are mounted and correctly
closed.
The maintenance carried out must be documented in a maintenance log. The date of the maintenance point and the maintenance
activity are described.
21-54C3-7D0002/-
Notice: Technical data subject to change without notice.
01/2022-EHT-441169
No claims for damage arising from alternations, errors or misprints shall be allowed.
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