07/2015
Temperature Difference Controller TDC 3
Page 4 of 47
A.4 Changes to the unit
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Changes, additions to or conversion of the unit are not permitted without the written
permission from the manufacturer
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It is likewise forbidden to install additional components that have not been tested
together with the unit
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If it becomes clear that safe operation of the unit is no longer possible, for example
because of damage to the housing, then turn the controller off immediately
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Any parts of the unit or accessories that are not in perfect condition must be
exchanged immediately
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Use only original spare parts and accessories from the manufacturer.
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Markings made on the unit at the factory must not be altered, removed or made
illegible
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Only the settings actually described in these instructions may be made on the
controller
A.5 Warranty and liability
The controller has been manufactured and tested with regard to high quality and
safety requirements. The unit is subject to the statutory guarantee period of two years
from the date of sale.
The warranty and liability shall not include, however, any injury to persons or material
damage that is attributable to one or more of the following causes:
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Failure to observe these installation and operating instructions
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Improper installation, commissioning, maintenance and operation
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Improperly executed repairs
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Unauthorized structural changes to the unit
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Installation of additional components that have not been tested
together with the unit
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Any damage resulting from continued use of the unit despite an
obvious defect
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Failure to use original spare parts and accessories
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Use of the device for other than its intended purpose
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Operation above or below the limit values listed in the
specifications
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Force majeure
Danger
Changes to the unit can compromise the safety and function of the unit or the entire
system.