S&P HDT Serie Instructions D'emploi Et D'installation page 7

HDT/HDB 288085004 30/12/04 16:40 Página 7
(*) For explosive atmosphere applications, when used inside and/or as part of a third
party machine then the installation must be inspected and certified by an official
Health and Safety body.
Electrical Connection
Before carrying out any installation or wiring of the HDT/HDB range ensure that the
mains electrical supply is disconnected. Before making any electrical connections
ensure that the voltage and frequency of the mains electrical supply matches that of
the fan data plate label (maximum permissible deviation of voltage and frequency +/-
5%). All models must be wired in accordance with the enclosed instructions and the
direction of rotation must be checked. The earth connection must be connected and
checked for continuity before leaving the installation. In addition it is important to
check that the wires within the terminal block/box are separated whereby a minimum
of 10mm distance (at 400 volts) and that the wires are correctly and firmly tightened
within the terminal block and that the connection box lid is replaced.
Aluminium Impeller
All HDT/HDB fans include a dynamically balanced aluminium impeller.
The impellers with adjustable pitch angle have been factory set to the correct blade
angle of operation. UNDER NO CIRCUMSTANCES MUST THE BLADE ANGLE BE
ADJUSTED OR CHANGED, OTHER THAN BY AN S&P APPROVED ENGINEER.
General Operating and Maintenance
All HDT/HDB fans are suitable for operation within the temperature ranges of –30∞C
up to 40∞C. The excessive accumulation of dust and debris on the impeller must be
avoided to ensure optimum operation and avoid unbalancing the impeller, which may
result in a product failure. We would recommend that the product is cleaned regu-
larly to ensure trouble free operation. To clean the appliance simply wipe with a damp
(not wet) cloth. Do not use any abrasives or solvents. Do not use high pressure
water or steam cleaning apparatus to clean the unit. All ball bearing assemblies are
sealed for life and do not require maintenance.
Technical Assistance
The HDT/HDB range of axial fans are offered with a comprehensive guarantee and
technical assistance service. If the appliance is found to be defective within the peri-
od of the guarantee then first please contact your local technical assistance point,
then only if necessary return to an authorised S&P supplier. IMPORTANT: Any
repairs or work carried out on the appliance by person(s) not authorised by S&P will
invalidate the guarantee.
S&P reserve the right to alter specifications without prior notice.