Unit installation

  1. Check unit for transport damage.
  2. Prepare installation location for duct, wall or foot mounting: Lay ventilation duct or flexible duct. If mounting on wall, make sure there is a level support surface.
  3. Lay a permitted power cable to the installation location. Use a connection cable suited to the unit type.

  4. Risk of cuts from metal housing plates with sharp edges.

    1. Wear personal protective equipment (cut-resistant gloves) for installation.
  5. DZR.. Ex e / t: Secure appropriate mounting foot (type FU) to fan housing with self-cutting tapping screws provided. Any installation position can be selected. Make sure that there is free access to terminal box at the installation location.
  6. DZQ/DZS/DZR/DZD .. Ex e / t: Transport fan to installation location. Note safety instructions and data in the previous chapter.
    DZD .. If possible, position Ex e / t, on the roof at the installation site using a crane.
  7. DZD .. Ex e / t: Use suitable insulation, sound-absorbing and installation materials between the unit and roof/ roof socket.

  8. Risk of explosion/risk of injury due to incorrectly mounted or falling unit.

    1. Only mount on walls/ceilings with sufficient load-bearing capacity and sufficiently dimensioned mounting material.
    2. Mounting material is to be provided by the customer.
    3. During installation, do not allow people to stand under the installation location.

  9. Risks of leakages if unit is not sealed tightly enough.

    Firmly screw fan down at all flange holes.

  10. Install fan and screw down securely to wall/ceiling/roof/roof socket at all flange holes [X] (4...16 holes, depending on type). Mounting material of the sufficient size should be provided by the customer. Note rotation direction and air flow direction air direction arrows on unit sticker.
  11. DZR.. Mount Ex e / t with pre-fitted mounting foot to wall, ceiling or bracket. Mounting material of the sufficient size should be provided by the customer.
  12. DZR/DZD .. Ex e / t: Connect ventilation ducts. Securely screw down folded spiral-seams ducts to all fan flange holes with flexible cuffs or flexible couplings (MAICO types EL-Ex / ELAEx). Ensure seal integrity.
  13. Check air gap between impeller and housing. DZQ ../DZS ..: Check air gap between impeller and housing after mounting with the gauge provided Fig. A1, table.

  14. Risk of explosion when operating without protective device, should foreign bodies fall or be drawn into the air duct.

    Risk of death due to spark formation.

    1. Be sure to fit any free air inlet/outlet with a protective device that meets the requirements of EN 13857 and is suitable for Ex areas, e.g. with MAICO protective grille SG..Ex (IP 20 degree of protection according to EN 60529). When using non-Maico products, an ignition hazard assessment must be carried out.
  15. If the air inlet or outlet is not covered, mount a permitted protective grille, e.g. MAICO protective grille SG... in front of the unit.
  16. Ensure a sufficient fresh air supply intake.
  17. Fit suitable insulation, sound-absorbing and installation materials.