Introduction and Safety
Model API 3171 Installation, Operation, and Maintenance Manual
7
• Make sure that thermal contacts are connected to a protection circuit according to the
approval classification of the product, and that they are in use.
• Intrinsically safe circuits are normally required for the automatic level-control system by the
level regulator if mounted in zone 0.
• The yield stress of fasteners must be in accordance with the approval drawing and the
product specification.
• Do not modify the equipment without approval from an authorized ITT representative.
• Only use parts that are provided by an authorized ITT representative.
Description of ATEX
The ATEX directives are a specification enforced in Europe for electrical and non-electrical
equipment installed in Europe. ATEX deals with the control of potentially explosive atmos-
pheres and the standards of equipment and protective systems used within these atmos-
pheres. The relevance of the ATEX requirements is not limited to Europe. You can apply these
guidelines to equipment installed in any potentially explosive atmosphere.
Guidelines for compliance
Compliance is fulfilled only when you operate the unit within its intended use. Do not change
the conditions of the service without the approval of an ITT representative. When you install or
maintain explosion proof products, always comply with the directive and applicable standards
(for example, IEC/EN 60079–14).
Product warranty
Coverage
ITT undertakes to remedy faults in products from ITT under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to an ITT representative within the warranty period.
• The product is used only under the conditions described in this manual.
• The monitoring equipment incorporated in the product is correctly connected and in use.
• All service and repair work is done by ITT-authorized personnel.
• Genuine ITT parts are used.
• Only Ex-approved spare parts and accessories authorized by ITT are used in Ex-approved
products.
Limitations
The warranty does not cover faults caused by these situations:
• Deficient maintenance
• Improper installation
• Modifications or changes to the product and installation made without consulting ITT
• Incorrectly executed repair work
• Normal wear and tear
ITT assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Warranty claim
ITT products are high-quality products with expected reliable operation and long life. However,
should the need arise for a warranty claim, then contact your ITT representative.
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