8) Check that the current (amps) taken by the fan does not exceed the current shown on the
rating plate.
9) Ensure rotation of impeller is correct. Incorrect rotation may cause irreversible damage to
the motor. Three phase units require a trial connection, to reverse direction interchange
any two supply leads.
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RESPONSIBILITY
Vent Axia Incorporating Roof Units Limited, as suppliers of the equipment cannot be
responsible for the final installation and electrical connection of the product on site. We have
made reasonable effort to offer guidance and assistance but the installer and electrical
contractor on site have a responsibility for ensuring the equipment is safely and securely
installed and electrically / mechanically safe in accordance with statutory requirements.
The fans are supplied as a component to be incorporated into a ventilation system. The final
complete system installation that includes the fans MUST meet all relevant directives.
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INSPECTION
These pieces of equipment require maintenance, cleaning and inspection, therefore allow
reasonable access for these operations to be carried out by a suitably qualified person safely.
ISOLATE FROM POWER SUPPLY AND ENSURE POWER CANNOT BE RE-CONNECTED
BEFORE ANY WORK IS CARRIED OUT.
It is recommended that the fan be inspected after three months or sooner if conditions dictate.
If a build up of dirt / deposits is evident then this should be carefully cleaned off. Please take
care not to damage the fan or affect the balance of the impeller motor assembly (balance
weights may be fitted to the impeller).
Further inspections should be carried out periodically as necessary dependant on experience
and site conditions. It is recommended that a minimum of two inspections per year be carried
out.
The fan motors are fitted with “sealed for life” bearings and, under normal circumstances,
should not require maintenance.
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BELT TENSION AND ALIGNMENT
The belt tension and alignment should be checked:-
1) When fitting new belts, installing a new fan or just prior to starting the fan for the first time.
2) After the first 30 minutes of operation.
3) At least every 6 months.
Alignment
Ensure that the pulleys are correctly aligned before checking the belt tension and after any
adjustments.