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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
Fan - sizes 04 and 06
Inspection
1. Remove one end of the fan assembly’s earth braid. Remove the screws (posi-
tion 2) in the connection plate (position 1) and unhook the fan unit from the
keyholes in the anti-vibration supports (position 4), both upper and lower.
2. Check that the fan impeller with motor (position 5) rotates easily, is in balance
and does not vibrate. Also check that the fan impeller is clean from any accu-
mulation of particles. Imbalance may be due to a coating or damage to the fan
impeller blades.
3. Listen to the sound from the motor bearings. If the bearings are in good condi-
tion, you will hear a slight purring sound. A scraping or pounding sound may
mean that the bearings are damaged and service is then required.
4. Check that the fan impeller with motor (position 5) is firmly mounted in the
upper fan support (position 7) and that it has not shifted sideways toward the
inlet cone (position 6). Also check to make sure that the inlet cone is properly
secured.
5. The fan unit is mounted on the connection plate by means of rubber anti-vibra-
tion mountings (position 3) between the lower fan support (position 8) and the
anti-vibration supports (position 4). Check that the anti-vibration mountings are
intact and are firmly fitted.
6. Check that the gasket on the connection plate (position 1) around the connec-
tion opening is intact and is firmly fitted.
7. Check that the measurement tubes are securely fitted on each measurement
outlet.
8. Check that the edge protection on the upper fan support (position 7) is firmly
mounted and protects the cables that are wired to the junction box (position 9).
2
2
6
8
7
9
5
4
3
1
Fan unit, sizes 04 and 06
1. Connection plate
2. Screws (suspension)
3. Anti-vibration mounting
4. Anti-vibration support
5. Fan impeller with motor
6. Inlet cone
7. Fan support, upper
8. Fan support, lower
9. Junction box
Summary of Contents for Envistar Compact Series
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