Installation and Commissioning Guide
Hercules Package Unit
67
Installation and Commissioning Guide - Hercules Package Unit
Doc. No.0525-021
Ver. 21 221110
Cleaning the Condenser Coils
Clean the coils at least once a year or more frequently if unit is located in a dusty and dirty environment, in order to maintain
your system’s proper operating performance. High discharge pressures are good indication that the coils need cleaning.
When using detergent or solvents to clean the coils, follow the manufacturer’s instructions to avoid potential damage to the
coils and to the unit.
To clean the refrigerant coils, use a soft brush and water spray, such as garden hose or pressure washer with low pressure
nozzle.
WARNING
Do Not Use High Alkaline Detergent!
When using detergent for coil cleaning, ensure that the alkaline level is no higher than 8.5, which can cause corrosion damage
to the coils.
No Water into the Electrical Compartments!
Ensure consideration is given to the possibility of water entering the electrical compartments during cleaning of the condenser
coil.
When using water jets to clean the coils, make sure that you do not spray water directly into the electrical components and
connections.
Coil Cleaning Procedures
•
Disconnect power to the unit.
•
Remove the louvered panels from the unit to gain access to the air inlet side of the coils.
•
Open evaporator access door and remove access panel to the condenser section.
•
Use a soft brush to remove loose dirt and debris from both sides of the coils.
•
Straighten bent coil fi ns with fi n comb.
•
Prepare the detergent solutions according to the manufacturer’s instructions.
•
Spray solution at a 90° angle to the coils, keeping a minimum nozzle spray angle of 15°, with at least a 1800mm distance
from the coils and 600 psi pressure.
•
Spray leaving air side of the coils fi rst then the air inlet side. Allow the solution to stand on the coils for fi ve minutes.
•
Rinse both sides of the coils with cool clean water.
•
Inspect the coils, if they are still dirty, repeat the cleaning procedure.
•
Clean and wipe dry the outer and inner sides of the unit, the refrigerating parts and other components.
•
Ensure that the condensate drain lines are not blocked.
•
Reinstall all unit panels, covers and guards.
•
Restore electrical power to the unit.
