Operation / Installation Manual – FCF 5,000, 9,000, 12,000, 16,000
Page 25
MAINTENANCE
REVERSING VALVES
Reverse cycle units have a reversing valve; the valve must be energized periodically to keep the internal parts
moving freely. To do this, switch the a/c unit into heat for a few seconds once a month.
SEAWATER STRAINER
Ensure that your pump receives adequate seawater flow by regularly cleaning the strainer basket. Periodically
check the overboard discharge for a steady stream of water. Check seawater intake speed scoop for obstructions.
Make sure hoses are not looped, kinked or crushed.
BLOWERS
Oil blowers every six months with SAE20 or equivalent. This does not apply to high velocity blowers with the motor
encased in the blower housing.
CONDENSER COIL CLEANING
1. With the system turned off at the circuit breaker on the ship's panel, disconnect the inlet and outlet
connections of the condenser coil.
2. Use chemical resistant hoses (PVC 5/8" I.D., etc.) to connect the inlet of the condenser coil to the outlet of
a chemical resistant, submersible pump and let the hose connected to the Coil outlet flow freely into the
container mentioned below.
3. Place a strainer or piece of screen over the inlet of the pump and submerse the pump into a container filled
with a 5% solution of muriatic or hydrochloric acid and fresh water or use a premixed over-the-counter
solution. Use a large container as possible to hold the solution (5-25 gallons). CAUTION: avoid spilling or
splashing the solution. Remember to wear all necessary protective gear, i.e. approved safety goggles and
chemical resistant gloves. Follow all warnings and recommendations given by the manufacturer of any
acids or premixed solutions.
4. Power the pump and circulate the solution through the condenser coil for 15-45 minutes depending upon
the size of the coils and the extent of the contamination. Visual inspection of the solution in the container
should indicate when the contamination has been removed.
5. Circulate fresh water through the coil to flush any residual acid from the system.
6. Restart the system and check operational parameters to ensure thorough cleaning has taken place.
Additional cleaning may be necessary with extreme contamination.
For the purpose of protecting the environment, dispose of any contaminated
acid solutions in accordance with federal, state and/or local regulations.
RETURN AIR FILTERS
Check the return air filter about once a month and clean as necessary. To clean the filter, remove it from the unit,
rinse with water, air dry and reinstall. (Do not used compressed air)
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