Maintenance and repair
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240634 / 8146662300
2016-07-11·BA00·III·en·02
(Double) temperature controller and
limiter
Series 8146/5041, 8146/5051
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What to do if the measuring system breaks
If the measuring system is destroyed, i.e., if the expansion liquid escapes, the pressure
in the membrane will drop and permanently opens the circuit of the temperature controller
and temperature limiter. The temperature limiter can no longer be unlocked.
What to do if the temperature is below normal
If the sensor of the temperature controller or limiter has cooled down to temperatures
below approx. -20 °C (-65 °C at TU = -60 °C), the electric circuit opens, however, it closes
automatically again if temperature rises.
10
Maintenance and repair
10.1 Maintenance
• Consult the relevant national regulations to determine the type and extent
of inspections.
• Adapt inspection intervals to the operating conditions.
During maintenance of the device, check at least:
• whether the clamping screws holding the electric lines are securely seated,
• whether the device enclosure and / or protective enclosure have cracks or other visible
signs of damage,
• whether the permissible ambient temperatures are observed,
• whether the device is used according to its designated use.
WARNING
Risk of electric shock or malfunctioning of the device due to unauthorized
work!
Non-compliance can result in severe injuries and material damage.
• Work performed on the device must only be carried out by appropriately
authorized and qualified electricians.
