3
INSTALLATION
Ensure that suitable fastener is used for each of the mounting holes in the panel.
Ensure that the fan panel and drive components are not bent or twisted during installation.
Fan should be installed so that any obstructions will not be within 1 Diameter of the fan inlet and outlet.
Ensure that the fan orientation is correct for the required air flow direction.
Electrical Connection
Before carrying out any installation or wiring of the 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 fre/- 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 required.
Impeller
All APN fans include a dynamically balanced 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 KRUGER APPROVED ENGINEER.
ROUTINE MAINTENANCE
Maintenance should always be performed by experienced and trained personnel. Do not attempt any
maintenance on a fan unless the electrical supply has been locked out or tagged out and the impeller has
been secured.
Under normal circumstances, handling clean air, the system should require cleaning only about a year.
However, the fan and system should be checked at regular intervals to detect any unusual accumulation.
The fan impeller should be specially checked for build-up of material or dirt which may cause an Imbalance
with resulting undue wear on bearings and belt drives. A regular maintenance program should be established
as needed to prevent material build-up.
Periodic inspection of the rotating assembly must be made to detect any indication of weakening of the rotor
because of corrosion, erosion, or metal fatigue.
(For APN only)
