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Reco-Boxx ZXR / ZXA / Flat – Operation and maintenance instructions
[03/
2022 ]
8.3 Every 12 months
1.
For plate heat exchanger (PX) units
• Clean the drain pan
• Clean the inside of the bypass. To access the interior of the bypass it is necessary to force it open,
proceed as follows: place a jumper between terminals IN3 and +12V on the TAC circuit board. The
bypass is now open, regardless of the temperature conditions.
• Remember to remove the jumper between terminals IN3 and +12V once cleaning of bypass is done.
• Always clean against the direction of the airflow.
• Cleaning must only be done by blowing with compressed air, vacuum cleaning with a soft nozzle or
through wet cleaning with water and/or solvent. Before you begin cleaning, cover adjacent functional
sections to protect them. If cleaning solvent is used, do not use solvent that will corrode aluminium or
copper.
2.
Fan maintenance:
Check again whether the power supply is shut down and fans are not running.
Inspect and clean the fan impellers to remove any dirt deposits, be careful not to alter the impeller
balance (do not remove balancing clips). Check the impeller to make sure that it is not out of balance.
Clean or brush off the fan motor. It can also be cleaned by carefully wiping it with a damp cloth that has
been dipped in a solution of water and detergent. Clean the fan space, if needed. Remove the fans if
necessary.
3.
Check seals on the unit:
Ensure that the side access panels are fully closed and that the seals are intact. Replace if necessary.
