EnviroComfort Installation Manual
Reversing Valves
L-2657 ENGLISH
17
MAINTENANCE
R
EVERSING
V
ALVES
Units that both cool and heat have a reversing valve; the valve must be energized periodically to keep the internal parts moving
freely. To do this, switch the air conditioner unit into heat for a few seconds once a month.
S
EAWATER
S
TRAINER
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.
C
ONDENSER
C
OIL
C
LEANING
A marine-growth-fouled coil reduces efficiency, raising total system pressure and decreasing its ability to produce cold air.
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 (MAS white PVC 5/8" 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 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 as large a
container as possible to hold the solution (5-25 gallons [19-95 liters]).
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 removal has stopped.
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.
Coil iced.
1.
Thermostat set point is too low.
Check setting on temperature knob. If setting is
extreme for conditions, raise set point.
2.
Improper air flow.
Clean return air filter or remove obstructions from return air
stream. Check for crushed or restricted ducting. Ducting run must be as straight as
possible; remove any excess ducting.
Short-cycling compressor.
1.
Supply air returning directly to return-air grille.
Redirect supply air so that it is
not directed into the return-air stream.
System runs continuously.
1.
Port hole or hatch open.
Close all port holes and hatches.
2.
Thermostat setting is excessive for conditions.
Raise thermostat setting to
cycle compressor.
Pump not working.
1.
No water flow.
Remove obstructions.
2.
Pump is in run-dry protection mode.
If water flow is available, wait for the
pump’s next restart sequence, or if locked out, disconnect then reconnect power.
CAUTION
Avoid spilling or splashing the solution. Follow all warnings and recommendations given by the manufacturer of any
acids or premixed solutions.
WARNING
For the purpose of protecting the environment, dispose of any contaminated acid solutions in accordance with
federal, state and/or local regulations.
Table 3: General Troubleshooting Guidelines (continued)
PROBLEM
POSSIBLE REASONS & SOLUTIONS
Содержание EnviroComfort ECD
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