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3.1.1.1 Proper and improper use
Use the unit only for the intended purposes for which it was designed. Any other use relieves Mehits of all liability arising from
improper use of the unit.
Air-handling units are designed for civil and industrial air handling.
In case of corrosive and/or explosive operating environments, during the design stage it is essential to make the machine
suitable for handling particular flows.
The use of the unit must always and in all cases comply with the design parameters set during the contract negotiations in
agreement with the customer. Any other use must be considered improper and dangerous.
Mehits shall not be liable for damage caused by different and unintended uses of the materials provided.
PROHIBITION:
It is strictly forbidden to connect the unit to rooms with naked flames (e.g. smoking rooms or
kitchens).
OBLIGATION:
The unit can only be connected to rooms with naked flames (e.g. smoking rooms or kitchens) if it is
equipped with the safety damper accessory.
It is forbidden to use the unit:
•
In explosive atmosphere
•
In a flammable atmosphere
•
In a corrosive atmosphere
•
In excessively dusty environments
•
By untrained personnel
•
Not in accordance with current legislation
•
If incorrectly installed
•
With supply defects
•
Without fully or partially following the instructions
•
If not properly maintained and/or if non-original spare parts are installed
•
With inefficient safety components.
3.1.2
Precautions against residual risks
Prevention of residual mechanical risks
•
The unit must be installed outdoors;
•
Install the unit according to the instructions set out in this manual;
•
Regularly carry out all the maintenance operations foreseen in this manual;
•
Wear protective equipment (gloves, eye protection, hard hat, etc.) appropriate for the work being carried out. Do not
wear clothing or accessories that can get entangled or sucked in by the air flow. Collect and tie hair to the head before
entering the unit;
•
Before opening the machine panelling make sure that it is firmly hinged to the machine;
•
The fins on heat exchangers and the edges of metal components and panels can cause cuts;
•
Do not remove the guards from mobile components while the unit is operating;
•
Make sure that mobile component guards are fitted correctly before restarting the unit;
•
Fans, motors and belt drives might be running: before accessing these, always wait for them to stop and take
appropriate measures to prevent them from starting up;
•
Fans, motors and transmissions may be running: before starting the machine make sure to install the appropriate
protections to prevent contact with the components during operation;
•
The surfaces of the machine and pipes can get very hot or cold and cause the risk of scalding;
•
Never exceed the maximum pressure limit (PS) of the water circuit of the unit indicated;
•
Before removing parts on the pressurised water circuits, close the section of the piping concerned and drain the fluid
gradually to stabilise the pressure at the atmospheric level;
•
Do not use your hands to check possible refrigerant leaks.
Installation, use and maintenance manual
10
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