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Basic Safety Instructions
3. BASIC SAFETY INSTRUCTIONS
These safety instructions do not make allowance for any
• Contingencies and events which may arise during assembly, operation, and maintenance of the devices.
• Local safety regulations – the operator is responsible for observing these regulations, also in relation to the instal-
lation personnel.
DANGER!
Danger – high pressure!
• Before loosening lines and valves, turn off the pressure and vent the lines.
Danger of explosion in explosive atmosphere (only in the event of a fault as zone 2)!
• Opening the hood or the housing in an explosive atmosphere is only allowed in a not energized state!
• Secure housing with lead seal or optionally with plastic self-cutting screws (diameter 3 mm, length approx.
10 mm; e.g. Ejot PT screw K 30 x 10) to prevent it from being opened without a tool!
• Activating the DIP switches on the PCB, using the service interface and the Teach buttons, is not permitted in
an explosive atmosphere!
• Layers of dust on the housing may not exceed 5 mm! Lint, conductive and non-conductive dust particles are
allowed. The inside of the housing must not be dirty!
• When wiping the control head, use a damp or anti-static cloth in the explosion-risk area to prevent electrostatic
charges!
• Use only cables and cable glands which have been approved for the respective application area and which
have been screwed into place according to the respective installation instructions!
• Close all unnecessary openings with locking screws/sealing plugs approved for explosions area!
WARNING!
Risk of electric shock!
• Before reaching into the system (except for the Teach-In procedure in a non-explosive atmosphere) switch off
the power supply and secure it to prevent restarting!
• Observe applicable accident prevention and safety regulations for electrical equipment!
General hazardous situations.
To prevent injuries:
• Ensure that the system cannot be activated unintentionally.
• Installation and maintenance work, as well as operator control actions may be carried out by authorized and
qualified technicians only and with the appropriate tools.
• Do not make any unauthorized internal or external changes to the device!
• After an interruption in the electrical or pneumatic supply, ensure that the process is restarted in a defined or
controlled manner.
• The device may be installed and operated only when in perfect condition and in consideration of the operating
instructions.
• The general rules of technology apply to application planning and operation of the device.
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