KOJA Future Series - 4 Filter Section Fstf; Construction; Operating Conditions; Installation

AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
Filter secon FSTF
2017-02-13 V. 2.0 13
4. FILTER SECTION FSTF
4.1. Construction
The filter section FSTF is available in four lengths. The hygiene type Future Clean can be equipped with a pull-
out filter frame up to unit size 1209.
The filter section has a thermally insulated casing. The particle filters used are disposable filter cassettes of the
module’s length. The cassettes are pushed into the mounting frame and pressed against the rubber strips made
of EPDM. The activated carbon filters have carbon cylinders fixed to the connection plate.
The section has connections for a differential pressure gauge and filter indicator.
4.2. Operating conditions
• The operating temperature range is –40…+80 °C.
4.3. Installation
Filter section FSTF is installed in the upright position (see figure above) or in the horizontal position, in which
case the air flow can be directed upwards or downwards when using coarse-grain filters G3 and G4 or wide-area
filter F7. With other filter grades, the air flow direction is downwards only. The air flow direction is marked on
the filter section and on the filters. If there are no markings, the filter section must be installed so that the air
must enter the filter from the filter groove side.
4.4. Commissioning
The filters must be installed before test-running the unit. The filters are placed in the mounting grooves with
the folds in upright position, and then clamped against the gasket.
• Check that the filters are intact and of the correct type.
• Check that the filters are tight against the frame gasket and that there are no leaks.
• Check that the filters are clamped in place.
• Check that the differential pressure gauge is intact and reset.
• Check that the differential pressure hoses of the filter section are intact and in their places.
At the installation stage, the pressure difference limits for the filter indicators must be set according to the Fu-
ture dimensioning program documentation. The filter pressure difference values must under no circumstances
exceed the dimensioning pressure drop in the filter by more than two times. If the pressure difference is ex-
ceeded, the components or structure of the unit may become damaged. The warranty does not cover damages
due to negligence in replacing the filters.