Dometic MCS5 Notice D'utilisation page 32

_BA_MCS.book Seite 32 Donnerstag, 2. April 2009 9:56 09
Maintenance
10.3 Condenser Coil Cleaning
Warning
a
For the purpose of protecting the environment, dispose of any con-
taminated acid solutions in accordance with federal, state and/or
local regulations.
Coils can become fouled over a period of time due to marine growth or scale
build-up. This both obstructs water flow and prohibits proper heat transfer.
Turn off the system at the circuit breaker on the ship's panel.
Disconnect the inlet and outlet connections of the condenser coil.
Place a strainer or piece of screen over the inlet of the pump.
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.
Caution
a
Avoid spilling or splashing the solution.
Follow all warnings and recommendations given by the manufac-
turer of any acids or premixed solutions.
Use chemical resistant hoses (MAS white PVC 5/8"/16 mm I.D., etc.) to
connect the inlet of the condenser coil to the outlet of a chemical resistant,
submersible pump (MAS P-500 pump, etc.) and let the hose connected to
the coil outlet flow freely into the container.
Use a large container as possible to hold the solution (19 – 95 l).
Power the pump and circulate the solution through the condenser coil for
15 – 45 min, 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 removal has stopped.
Circulate fresh water through the coil to flush any residual acid from the
system.
Restart the system.
Check operational parameters to ensure thorough cleaning has taken
place.
Additional cleaning may be necessary with extreme contamination.
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MCS5, MCS15