415005 Topvex TR Operation and Maintenance Instructions
Topvex TR800, TR1300, TR1800, TR4000 Operation and Maintenance Instructions
Systemair Inc.
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5.3.3 Checking the Fans
Even if the required maintenance, such as change of lters, is carried out dust and grease may slowly build
up inside the fans. This will reduce their efciency.
The fans can be removed by loosening the screws which attach the rack to the unit’s inner wall section.
The complete fan rack can then be pulled out after all the attached fast couplings to the electrical wires
have been disconnected (gure 8). The fans may be cleaned with a cloth or a soft brush. Do not use water.
A mild solvent can be used to remove obstinate settlements. Allow fan to dry properly before reinstalling.
The fan motor bearings are permanently lubricated and should not be re-greased.
Fig. 8 Removing the fans
Fig. 7 Removing the heat exchanger
Note:
Make sure that the rotor motor is not exposed to moisture
After extended use dust may build up in the exchanger and block the air ow. It is important to clean the
exchanger regularly to maintain high efciency. The complete rotating heat exchanger block can be taken
out of the unit (gure 7) in the smaller models to facilitate cleaning and maintenance. Wash in hot soapy
water or use pressurized air. Do not use detergents containing ammonia.
Check at least once a year that the exchanger rotor rotates easily. Check this by removing the drive
belt and move the rotor by hand. Check also that the brushes are undamaged. The rotor bearings are
permanently lubricated from factory and should not be re-greased.
Check 4 times per year that the drive belt is sufciently tight, that it follows the tracks and that it is
undamaged. If the belt tension is too low it needs to be shortened.
5.3.2 Checking the Heat Exchanger