Denco CAIRplus - Page 60

Commissioning and Maintenance CAIRplus
60 PR-2009-0096-GB • Subject to modifications • R8-10/2015
Cooler with-
out or with
droplet sepa-
rator
(see page 73)
Every 12
months
• Check for leak-free condition and possible dirt on the air side.
• To ensure frost protection, periodically check the safety devices and take proper
precautions such as draining the equipment or adding antifreeze agents.
• Ensure that pipework connections and mountings are securely fixed.
• Clean on air side, if necessary (blow through heat exchanger using compressed
air or low pressure water).
• Air vent.
• Clean coil drip tray and condensate line.
• Check trap for proper operation, top up as necessary.
• Clean droplet separator with a descaling spray.
Before
winterizati
on
• Drain water from the cooling coil before winter.
Evaporator/
condenser
(see page 75)
Every 12
months
• Clean and check evaporator/condenser.
• Ensure that all refrigeration components (refrigerating machine, direct
evaporator, distribution manifold, refrigerant lines, etc.) are functioning properly.
Heat pipe
(see page 76)
Every 12
months
• Clean coil fins.
• Clean coil drip tray and condensate line.
• Check trap for proper operation, top up as necessary.
• If a heat pipe is fitted with a bypass, check air-regulating and shut-off dampers
for proper operation.
Liquid-cou-
pled energy
recovery as-
sembly
(see page 76)
Every 12
months
• Complete the same steps specified in "Cooler with/without droplet separator"
(every 12 months).
Plate heat
exchanger
(see page 77)
Every 12
months
• Carry out cleaning depending on contamination degree of the plate assembly.
• Check bypass damper for proper operation, if required.
Complete wet cleaning only if a tray is installed and available!
• Remove oil and fat deposits.
Rotation heat
exchanger
(refer to
page 78)
Every 3
months
• Check tension of drive belt, tighten as necessary.
Every 12
months
• Clean coil fins – carry out wet cleaning only if a tray is installed! Never use high-
pressure water or steam for cleaning coil fins.
• Remove dirt from the section.
• Check dampers with energy-recovery system and bypass arrangement for
proper operation.
• Check run-around gaskets, adjust as necessary.
• Check motor alignment.
Unit part Frequen-
cy
(months)
Action
✓