Fans - CIAT Climaciat Instruction Manual

- 4. Clean the filter support frames,
- 5. Check the operation of the pressure drop measuring instruments,
- 6. Clean the inside of the filtration box. Remove any impurities using a vacuum cleaner and/or a cleaning product,
- 7. Make sure there are no foreign objects inside the box,
ƒ Replacing the filters:
- Once the maximum pressure drop recommended by the manufacturer has been reached (see table § 9.3 Filters).
- In case of excessive leaks, damage or corrosion,
- In case of odours, spare cells can be ordered from the unit manufacturer's distribution network. Only original parts
guarantee optimal operation.
ƒ When replacing filters:
- Take care not to damage the gaskets when disassembling fouled filters,
- Clean all the components upstream of the filters and the duct networks,
- Clean the filter support frames,
- Match the original technical and dimensional specifications of the filter cells,
- Check the filters. New filters have an expiry date, which must be observed,
- Refit the new filters and lock with the runners or the hooks depending on the assembly,
- Clean the inside of the filtration box. Remove any impurities using a vacuum cleaner and/or a cleaning product,
- Make sure there are no foreign objects inside the box.
Disposal of filters:
ƒ
- Depending on the filtration environment, the filter cells may be considered as special waste, and must comply with
environmental and health regulations in force at the installation site.

10.3 Fans

10.3.1 Direct drive fan
Periodic maintenance
ƒ Every 3 months
ƒ Every month for ATEX units
ƒ Follow the instructions given in section 10.1 General recommendations for cleaning
Warning!
Follow the safety instructions (see § 2 - SAFETY INSTRUCTIONS).
ƒ When working inside the unit, make sure that the motors are switched off and the fans are not running.
- Follow the instructions in § 9.4 Fans.
- Check the motor/fan/mountings assembly for corrosion.
- Check for noise and vibrations from the bearings.
- Check that the fan is clean. Fouled blades may lead to imbalance and breakdown of the fan.
- If the motor has a cooling grille, check that it is clean.
- Remove any impurities using a vacuum cleaner and/or a cleaning product.
- Check the protection components (grille, crankcase).
- Check the tightness of the electrical connections (see § 7.5 Connecting the fans).
- For plug fans, check the balance of the wheel and the deviation between the wheel and the frame (see
page 24).
- Check the flexible connections.
- Check the anti-vibration mounts.
- Check the tightness of all mounting bolts.
10.3.2 Direct drive fan
- Follow the instructions and settings in § 9.4 Fans
ƒ Bearings:
- The maintenance frequency for the bearings depends on the fans' operating conditions.
- Most fans have lifetime lubricated bearings.
- Some fans have bearings with their own lubricators. Observe the frequency and type of lubricant recommended by the
fan manufacturer.
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