Section 12, Ventilation Fans, Filters (Electrical Enclosure) - Gardner Denver VST110 Operating And Service Manual

SECTION 12
VENTILATION FANS, FILTERS (ELECTRICAL ENCLOSURE)
Ventilation Fans/Filters - The electronics housed in the standard IP54 enclosure box are ventilated by a
combination of triple intake and discharge side air filters and a single roof-mounted axial fan. Refer to
Figures 1-4 and 4-1, pages 12 and 29 in their corresponding Sections of this manual, for details.
Filter Inspection - In order to ensure the electronics operate at peak efficiency and free from
troublesome temperature-related stoppages, it is imperative that the filter elements be kept clean:
1. Be sure the unit is completely off and oil reservoir is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Remove the access panel, located below the electrical enclosure area, by unlatching all four (4)
provided latches. The three (3) intake filter assemblies, located on the floor of the electrical
enclosure, are now accessible.
4. Remove the filter elements from each bracket by prying open the retaining grill area.
5. Inspect the elements. If dirty, gently clean with soapy water and allow to dry completely before re-
installation. If damage is evident, replace.
6. Replace elements into frame and replace snap grills.
7. Replace access panel in reverse order.
8. Open the electrical enclosure doors. The three (3) discharge filter assemblies are located on the
upper rear area of the electrical enclosure, above the VFD modules.
9. Repeat steps 4 through 6 to inspect, clean and replace these filter elements.
10. Close door.
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