General Maintenance Instructions - aldes DFE Compact micro-watt Manuel D'installation Et De Maintenance

I. General maintenance instructions
CONSTRUCTION characteristics
The structure is made out of omega shaped anodized aluminum profiles connected by reinforced polypropylene
auto-extinguishable (M1) corner pieces. The panels are 20mm 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
foam panels, self-extinguishing (M1 class), in conformity with the European environment standards, inserted
between layers. The DFE Compact is mono-structured. All the access doors to the ventilators and filters are
equipped with handles.
Micro-watt technology fans
The DFE Compact series is equipped with micro-watt technology centrifugal ventilators. The DFE Compact
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 softstop 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 Compact: 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 counterflow 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 (DFE Compact is delivered with a
condensates pump).
Protect the heat exchanger by regularly cleaning or replacing the filters.
To protect from frosting, the DFE Compact control is as standard delivered with an inbuilt heat exchanger antifreeze
system (by unbalancing the in and out airflows).
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