28
Commissioning and Maintenance
Unit part
Interval
(months)
Task
Cooler with/
without
droplet
eliminator
12 months
• Check for tightness and for possible contamination on the air side.
• If there is a risk of frost, also check the safety devices regularly,
or take appropriate precautionary measures such as draining the
equipment or adding antifreeze.
• Check that pipe connections and mountings are secure.
• Clean air side as necessary (blow through heat exchanger using
compressed air or low pressure water).
• Bleed.
• Clean condensate tray/drain.
• Check siphon, top up as necessary.
• Clean droplet eliminator with descaling spray.
Before
each
winter
season
• Drain cooler coil before the start of winter if necessary.
Evaporator/
condenser
12 months
• Clean and check evaporator/condenser.
• Make sure that all refrigeration components in direct evaporators
(refrigerating machine, direct evaporator, distribution manifold,
refrigerant lines, etc.) are working efficiently.
Heat pipe
12 months
• Clean the heat transfer fins.
• Clean condensate tray/drain.
• Check siphon, top up as necessary.
• Where a heat pipe with bypass is used, check the air control and
shut-off dampers.
Liquidcoupled
heat
exchangers
12 months
• Carry out tasks specified under “Cooler with/without droplet
eliminator” (interval – 12 months).
Plate heat
exchanger
12 months
• Carry out cleaning depending on the type of contamination in the
plate block.
• Check the function of the bypass damper as necessary.
Wet cleaning may only be carried out if a tray has been installed!
• Remove oil and fat deposits.
