AHT Cooling Systems GmbH
If leaks occur, the refrigerant can escape and create an explosive gas/air mixture. This can lead to fire
and explosion with subsequent fire risk.
► Keep away from ignition sources (heat, sparks, open flames, hot surfaces).
► To remove condensation and for cleaning, use a damp cloth or sponge.
Do not use dry cloths or sponges for rubbing dry.
(Danger of electrostatic charging and sparking).
► Fill drain before commissioning and re-commissioning with about 2 liters of water (to prevent
carry-over of refrigerant into sewerage).
Additional specifications for VENTO GREEN devices (> 150g refrigerant R-290):
► There must be no fixed potential ignition sources (e.g. connectors, switches, etc.) within 0.5 m of
the device's boundary edges.
► Work with an open flame (e.g. welding, soldering, or fuel cutting operations) within 0.5 m of the
device's boundary edges must be performed by authorized AHT qualified staff (staff trained in
flammable refrigerants).
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An explosive atmosphere must not be present before starting the work.
Disconnect the device before starting the work.
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Secure the device against restarting.
• Requirements for the installation area:
► The device must only be installed in well-ventilated areas.
► Do not install the device in cellars or lowered areas.
► Channels and wall penetrations must be sealed underneath and behind the device, in
accordance with fire protection laws.
► Minimum area for installation room 300m²
• Fluid refrigerant causes frostbite on the skin.
► Protect hands and face from contact with fluid/leaking refrigerant.
► Wear protective goggles and gloves.
• Do not close the ventilation openings in the device housing (e.g. front ventilation grills or upper air
conduits). If accessory parts are to be installed, care must be taken to ensure that ventilation
openings are not closed.
• Observe the minimum distances to the boundary walls and to other devices to avoid hindering the air
circulation (see →Chapter 7).
• To accelerate the defrosting process, do not use any mechanical devices or other means (e.g. ice
scrapers) other than those recommended by the manufacturer.
• Do not damage the refrigerant circuit.
► Do not expose the device during storage and transport to temperatures higher than 70°C (158°F).
► Avoid transmission of pulsations and vibrations to the device.
► Avoid external force upon the device such as careless movements with floor trucks or floor
cleaning machines.
► Drilling or other work on the device is not permitted.
► Do not squeeze or bend pipes.
Do not operate any electrical devices (e.g. wet vacuum cleaners) within the refrigerator compartment
•
that are not of the type recommended by the manufacturer. Devices with explosion protection markings
(see → 1.2) are permitted.
Additional specifications for VENTO GREEN devices (> 150g refrigerant R-290):
•
► In the case of a critical alarm (priority 1+, red warning light is illuminated) in the corridor
outside the device, do not operate any electrical devices
cleaning machine, electrical pallet) that do not correspond to the manufacturer's recommended
design). Devices with explosion protection markings (see → 1.2) are permitted.
• Steam or high-pressure cleaners may not be used for the basic cleaning (see → 10.1.1).
• Work on the electrical system and the cold system must only be performed by qualified staff (staff trained
in flammable refrigerants).
► Opening the refrigerant circuit and suctioning of the refrigerant may only be performed in a well
ventilated area outside of business hours of the market (without customer traffic) or outdoors.
► Disconnect the device before each maintenance/repair (see → 9.2).
► Secure the device against restarting.
(e.g. wet vacuum cleaner, floor
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