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• Before you start work on the product, make sure that the product and the control panel
are isolated from the power supply and the control circuit, so they cannot be
energized.
• Do not open the product while it is energized or in an explosive gas atmosphere.
• 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 Xylem
representative.
• Only use parts that are provided by an authorized Xylem representative.
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 Xylem representative.
When you install or maintain explosion proof products, always comply with the directive
and applicable standards (for example, IEC/EN 60079–14).
Permitted liquid level for ATEX
ATEX-approved products must be fully submerged according to the ATEX approval. Level-
sensing equipment must be installed if the product can be operated at less than the
minimum submersion depth.
Monitoring equipment
For additional safety, use condition-monitoring devices. Condition-monitoring devices
include but are not limited to the following:
• Level indicators
• Temperature detectors
MSHA requirements
According to the Code of Federal Regulations, the following requirements must be fulfilled
to maintain permissibility of this equipment:
Subject area
General safety
Flygt 2400 Installation, Operation, and Maintenance Manual
Requirements
• Frequent inspections must be made.
• All electrical parts, portable cable, and wiring must be kept in a safe condition.
• There must not be any openings into the casings of the electrical parts.
• The machine frame must be effectively earthed (grounded).
• Power wires must not be used for earthing (grounding).
• The operating voltage must match the voltage rating of the motor.
Introduction and Safety
7
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