35
EN
Smart Touch Cabin Control Maintenance
10 Maintenance
This section describes routine activities to maintain
properly working system components.
WARNING: ACID HAZARD . Failure to obey the
following warnings could result in death or
serious injury .
• Follow all warnings and recommendations given by
the manufacturer of any acids or premixed solutions.
• Dispose of any contaminated acid solutions
in accordance with federal, state and/or local
regulations.
• Avoid spilling or splashing any antifreeze solution.
Monthly
Task
Section
Check the return-air filter.
Energize the reverse-cycle units.
Periodically - DX Only
Task
Section
Check the seawater strainer function.
Clean the condenser coil.
Winterizing - DX Only
Task
Section
Circulate antifreeze in the system.
10 .1 Checking the Return-Air Filter
Check the return-air filter about once a month and clean
as necessary. To clean the filter:
1. Remove the filter from the unit and rinse with water.
2. Air dry the filter and reinstall.
10 .2 Energizing the Reversing Valve
Units – DX Only
Energize the reverse-cycle (cooling and heating) units to
keep the internal parts moving freely.
To energize the reversing valve, switch the air
conditioning unit to heat mode for a few seconds very
month.
10 .3 Checking the Seawater
Strainer – DX Only
Ensure the pump receives adequate seawater flow. To
maintain proper flow:
1. Regularly clean the strainer basket.
2. Periodically check the overboard discharge for a
steady stream of water.
3. See the seawater intake speed scoop for blockage.
4. Ensure the hoses are not looped, kinked, or crushed.
10 .4 Cleaning the Condenser Coil –
DX Only
To avoid a marine-growth-fouled coil which reduces
efficiency by raising the total system pressure and
decreasing its ability to produce cold air:
1. Turn off the circuit breaker on the ship’s panel, and
disconnect the inlet and outlet connections of the
condenser coil.
2. Use chemical-resistant hoses [white PVC 0.6 in.
(16 mm) I.D., etc.] to connect the inlet of the
condenser coil to the outlet of a chemical resistant,
submersible pump (P-500 pump, etc.). 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 fresh water or with a premixed over-the-counter
solution. Use as large a container as possible to hold
5–25 gal (19–95 L) of solution.
4. Power the pump and circulate the solution through
the condenser coil for 15–45 minutes depending
on the size of the coils and the extent of the
contamination. Visually inspect the solution in the
container to determine when the contamination
removal has stopped.
5. Circulate fresh water through the coil to flush any
residual cleaner from the system.
6. Restart the system. Check the operational parameters
to ensure thorough cleaning has taken place.
Additional cleaning may be necessary with extreme
contamination.
Summary of Contents for MCS-CTRL
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