Ideal AKE AKV 116, Operating Manual

Page: 99 / 168

Subject to technical changes | Valid from July 2021 Subject to technical changes | Valid from July 2021
15
REFRIGERATED DISPLAY CASES
1.9. SPECIAL SAFETY INSTRUCTIONS FOR UNITS WITH PROPANE (R290)
REFRIGERANT
The following applies to units with propane (R290) refrigerant:
• During installation or when combining with devices and/or electrical and refrigeration components that do not corre -
spond to the respective guidelines for an R290, the unit must be covered and demarcated from the adjoining units/
components.
• The refrigerant circuit may be opened and the refrigerant extracted exclusively in a well-ventilated room or outdoors.
Activities must be carried out exclusively by authorised, qualified specialists who are trained for the refrigerant propane
(R290).
• Work on the refrigeration system must be carried out exclusively by authorised, qualified specialists who are trained for
the refrigerant propane (R290).
• Only electrical devices that are approved under the applicable ATEX Directive may be used inside the unit.
• The cooling circuit and refrigeration system of the unit must not be damaged. This can lead to an unintended exother -
mic reaction of the ignitable gas/air mix.
• The ventilation openings of the cladding of the unit (including accessories) must not be blocked or covered. In the
event of a leak in the refrigeration system, this can lead to an unintended exothermic reaction of the ignitable gas/air
mix.
• The ventilation openings on the front and back side of the appliance must be kept free. The minimum distances to
other units must be complied with. Ensure that the air circulation is unobstructed. In the event of a leak in the refrigera
-
tion system, a blockage of the air circulation can lead to an unintended exothermic reaction of the ignitable gas/air mix.
• According to DIN EN 3787-1, the refrigerant propane (R290) is combustible and explosive (refrigerant group A3).
• The refrigerant propane (R290) can create an ignitable gas/air mix, which can trigger an exothermic reaction in a criti -
cal mixing ratio with air and in combination with a corresponding ignition energy (ignition source).
• The specified filling quantity on the rating plate must be observed. Overfilling may result in damage to components of
the refrigeration circuit.
Use/installation of units with propane (R290) as a refrigerant in closed rooms
Units with propane (R290) refrigerant have a maximum filling quantity of ≤ 150 g.
This filling quantity results in a minimum requirement (in accordance with Kälteanlagenverordnung [Refrigeration Plant
Ordinance] (KAV) and EN 378-1) for the local conditions on the installation site:
Limit value [kg/m³] x free room volume [m³] = maximum refrigerant filling weight [kg].
45% x LFL* = 0.0141 [kg/m³]
Ambient temperature: 25°C
Height above sea level: up to 1750 m
*LFL…. lower flammable limit in accordance with EN378-1 Table E
Manufacturer‘s recommendation for the installation site: min. 12 m³
room volume per unit (for maximum refrigerant filling
quantity of ≤ 150 g).
The data and requirements listed must be checked and complied with by the operator in compliance with all safety stan -
dards and workplace evaluations.
CAUTION