Denco CAIRplus Operation Manual page 60

Commissioning and Maintenance
Unit part Frequen-
cy
(months)
Every 12
Cooler with-
months
out or with
droplet sepa-
rator
(see page 73)
Before
winterizati
on
Every 12
Evaporator/
months
condenser
(see page 75)
Every 12
Heat pipe
months
(see page 76)
Every 12
Liquid-cou-
months
pled energy
recovery as-
sembly
(see page 76)
Every 12
Plate heat
months
exchanger
(see page 77)
Rotation heat Every 3
exchanger months
(refer to
Every 12
page 78)
months
60
Action
•
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.
•
Drain water from the cooling coil before winter.
•
Clean and check evaporator/condenser.
•
Ensure that all refrigeration components (refrigerating machine, direct
evaporator, distribution manifold, refrigerant lines, etc.) are functioning properly.
•
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.
•
Complete the same steps specified in "Cooler with/without droplet separator"
(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.
•
Check tension of drive belt, tighten as necessary.
•
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.
PR-2009-0096-GB • Subject to modifications • R8-10/2015
CAIRplus
✓