Particular Hazards; Electric Voltage; Refrigerant Circuit; Combustible Refrigerants - AHT CB 196 Manuel D'utilisation

AHT Cooling Systems GmbH

1.6 Particular Hazards

1.6.1 Electric Voltage

Work on the electrical systems may only be performed by a qualified electrician.
In the event of error messages or damage to the unit, contact the maintenance service (see →Chapter10.4).
Contact with live parts can lead to an electric shock. Danger of fire from sparking or
overloading.
►Do not connect a damaged unit or damaged parts (such as power cords) to the electric circuit.
►Check the safety devices to make sure they are complete and in working order.
►Protective devices and covers installed on the unit must not be removed.
►Before connecting to the power supply, observe the following:
-applicable local electrical safety regulations
-applicable standards and safety instructions.
-information on the rating plate (see → Chapter 2.2.1).
►In the event of damage to the unit during operation and before maintenance work, observe the
following safety regulations:
1. Disconnect the unit (switch off all sources of electrical power and on all sides)
2. Secure the unit against being switched back on.
►Replacement of damaged parts only by specialists such as, for example,:
-mains connections
-light replacement (see → Chapter 10.2.2)
-battery replacement (see → Chapter 10.2.3)
►Protective devices and covers installed on the unit must not be removed.
►Do not crush or kink mains connections.
►Do not use any extension cables or power bars.
►No steam and high-pressure cleaners may be used for the basic cleaning (see → Chapter 10.1).
►Electrical parts must not be damaged.
1.6.2

Refrigerant Circuit

Work on the refrigerant circuit may only be performed by specialists.
In the event of error messages or damage to the unit, immediately contact the maintenance service
(see → Chapter 10.4).

1.6.2.1 Combustible Refrigerants

Specific safety and warning information for units with combustible refrigerants.
• According to DIN EN 378-1, R290 belongs to safety group A3.
The refrigerant that is used and the fill-up quantity can be seen on the rating plate (see → Chapter 2.2.1).
• The refrigerant is highly flammable.
Refrigerant can escape if there are leaks and cause an explosive gas/air mix. This can subsequently lead to a
fire and explosion with a subsequent risk of a fire.
► Keep away from sources of ignition (heat, sparks, open flames, hot surfaces).
► Use a damp cloth or sponge to remove condensate and for cleaning.
Do not use any dry cloths or sponges for rubbing dry (risk of electrostatic charging and sparking).
• Requirements of the installation room:
► The unit may only be setup in well-ventilated rooms.
► Do not setup the unit in basement rooms or other below-grade rooms.
► Sewers and wall breakthroughs under and behind the unit must be sealed in accordance with fire
prevention regulations.
► Minimum space for setup room is 300m²
• Liquid refrigerant causes frostbite on the skin.
► Protect your hands and face against contact with liquid/leaking refrigerant.
► Wear safety glasses and protective gloves.
• Do not seal ventilation openings in the housing of the unit (such as the air intake grating on the front of the unit,
the top of the unit, interior of the unit; honeycomb air ducts). If accessories are to be installed, make sure that no
ventilation openings are sealed.
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