General Maintenance Instructions - aldes DFE Série Manuel D'installation Et De Maintenance

I. General maintenance instructions
CONSTRUCTION characteristics
The structure is made out of omega shaped anodized aluminium profiles connected by reinforced polypropylene
auto-extinguishable (M1) corner pieces. The panels are 15mm double skin steel plates insulated. The outside
panels are 0,8mm thick pre-painted (5µm primer + 20µm polyester)-gray RAL 9002 color, covered with a plastic
protection (to be removed after installation). The inside panel is 0,8mm galvanized steel. This combination allows
the exposure of the panels to outdoors conditions, and forms a rigid structure. Thermal insulation is carried out by
EPS panels (density 30 g/l), self-extinguishing (M1 class), in conformity with the European environment standards,
inserted between layers. The DFE is mono-structured. All the access doors to the ventilators and filters are
equipped with handles.
Micro-watt technology fans
The DFE series is equipped with micro-watt technology centrifugal ventilators. The DFE regulation is specifically
developed to take advantage of this technology. Verify that the supplied voltage corresponds to the specification of
the ventilators and that the connection is made according to the supplied wiring instructions.
Attention! : The starting up / stop of the unit must be activated by using the soft stop function via K1/K2/K3
inputs on the CBr or via the RC, and not by shutting off the power supply.
Always check the following electrical specifications:
Power supply voltage: 230VAC (210V<V<250V).
Power supply frequency: 50/60 Hz.
Grounding the unit is compulsory
The motor is self-protected against overloading. It is thus NOT necessary to install an electrical overload protection
device. See section 3.2 for detailed wiring instructions.
Isolation class
Fans/DFE: IP44.
RC TAC3 REC: IP20
Nominal temperatures: -10° C/+55° C.
Conformity: CE (motors are also UL approved).
Before starting the unit
- If the fan wheel is turning properly, without resistance?
- Verify if the installation and the connections are made according to the applicable European standards.
- Are the precautionary measures to avoid an accident taken? (Wiring, rotating parts, security measures,)
Operating conditions
The temperature over the fan motor cannot be lower than -10° C, or superior to 55° C. The unit is not de signed to
operate in an aggressive or an explosive environment. It is strongly not advised to stop and start the unit more often
than every 5 minutes.
About the counter flow AIR/AIR heat exchanger
When properly maintained the heat exchanger will obtain efficiencies superior to 90% according to working
conditions. This may result in the production of condensates which will be collected by the drain pan. In severely
cold conditions, condensation can also cause a production of frost on the heat exchanger.
Before starting the unit, check that the drain pan is properly connected with the siphon delivered, and that the
connections to the drainage are airtight.
The slope of the drainage must be of at least of 1cm/m.
The siphon must be accessible
In the outdoor version of the DFE a siphon with membrane is supplied
If a risk of frosting of the drainage is existent, install a wire resistance (not supplied).
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