Sound Attenuator; Heat Recovery Units - CIAT Climaciat Instruction Manual

ƒ For the dampers:
- Check the integrity and efficiency of the protective grilles,
- Clean the dampers, repair any damage and remove any corrosion. The blade drive shafts are mounted in the plastic
bearings, which do not require maintenance,
- Check the condition of the linkages and replace if necessary,
- Make sure the blades are straight,
- Check the condition of the gaskets between the blades, and that they are perfectly joined,
- Uncouple the servomotor and make sure the blades rotate freely,
- Retighten the servomotor coupling,
- Actuate the dampers in the fully closed position and make sure the blades are perfectly joined,
- Place the damper in the fully open position before restarting,
- Remove any impurities using a vacuum cleaner and/or a cleaning product,
- Make sure the damper box is clean and free from foreign objects.
ƒ For the servomotors:
- Retighten the servomotor mountings,
- Make sure the drive (damper servomotor) reaches the end of travel positions (adjust the end limits if necessary).
ƒ For drain pan option:
- Clean and disinfect the drain pans with a suitable product.
ƒ For siphon option:
- The siphon must be activated during commissioning, or after each period of prolonged downtime.
- The siphon level must be checked periodically,
- Operation without condensation may result in evaporation of the water contained in the siphons,
- Clean and disinfect the siphon with a suitable product.

10.8 Sound attenuator

Warning!
Follow the safety instructions (see § 2 - SAFETY INSTRUCTIONS).
ƒ Frequency:
- Every three months,
- Every month for ATEX units
- Follow the instructions given in section 10.1 General recommendations for cleaning
ƒ Cleanliness is a determining factor in the efficiency of sound attenuators:
- Make sure the sound attenuator box is clean and free from foreign objects. Remove any impurities using a vacuum cleaner
and/or a cleaning product,
- Clean the baffle surfaces without damaging the fabric covering the rock wool. Warning: this fabric is fragile and a
maintenance vacuum cleaner may be too powerful. It may be sufficient to wipe the baffles with a cloth,
- Check for corrosion on the baffle frames and inside the box,
- Replace the baffles if they are worn, or if the protective fabric is torn.

10.9 Heat recovery units

10.9.1 Plate recovery unit
10.9.1.1 Plate recovery unit maintenance
Warning!
Follow the safety instructions (see § 2 - SAFETY INSTRUCTIONS).
ƒ Frequency:
- Every three months,
- Every month for ATEX units
- Follow the instructions given in section 10.1 General recommendations for cleaning
ƒ Cleanliness is a determining factor in the efficiency of the unit:
- Check the condition of the plates and the fouling level, and for any corrosion or damage,
- Remove any impurities using a vacuum cleaner and/or a cleaning product,
- The plates are only a few tenths of a millimetre thick. Do not use tools, screwdrivers, knives or abrasives for cleaning,
- Cleaning with water is only authorised if a drain pan is present,
- Remove any deposits of oil or grease using water with a product added to dissolve the grease.
ƒ The siphon level must be checked periodically. Operation without condensation or prolonged downtime may result in
evaporation of the water it contains.
- Clean and disinfect the siphon with a suitable product.
- Make sure any pressure and temperature sensors are operating correctly.
- Clean and disinfect the drain pans with a suitable product.
- Clean and maintain the Bypass dampers, refer to §10.6 Damper and mixing.
10.9.2 Rotary heat exchangers
10.9.2.1 Rotary heat exchanger maintenance
Warning!
Follow the safety instructions (see § 2 - SAFETY INSTRUCTIONS).
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