e) Winterization is now completed. If the boat is to remain in the water, do not reopen
the sea cock until you are ready to again use the air conditioning unit when freezing is
no longer a threat.
WARNING
IF THE SEA COCK IS REOPENED WITH THE BOAT IN THE WATER AND
FREEZING OCCURS, WATER HOSES MAY RUPTURE AND FLOODING MAY
OCCUR CAUSING SIGNIFICANT DAMAGE OR SINKING OF THE BOAT
SECTION 6
(THEORY of OPERATION and TROUBLE SHOOTING)
CLEAN AIR ACT AMENDMENTS OF 1990 [TITLE VI - SECTION 608(C-1)]
"Effective July 1, 1992, it shall be unlawful for any person, in the course of maintaining,
servicing, repairing, or disposing of an appliance or industrial process refrigeration, to
knowingly vent or otherwise knowingly release or dispose of any Class I* or Class II**
substance used as a refrigerant in such appliance (or industrial process refrigeration) in a
manner which permits such substance to enter the environment. De minimis releases
associated with good faith attempts to recapture and recycle or safely dispose of any such
substances shall not be subject to the prohibition set forth in the proceeding sentence."
*Class I substances include CFC-12
**Class II substances include HCFC-22
All Mermaid air conditioners have always been charged with HCFC-22 (R22), similar to
your home air conditioner or refrigerator. CFC-12 (R12) has never been used in
Mermaid air conditioners. It is unlawful for any technician who is not EPA certified as at
least a Type1.
A. THEORY of OPERATION:
1. General:
Note: It is helpful to refer to the Operational Block Diagram, FIGURE 2, and the
Model Wiring Diagrams, FIGURES 4a through 4c, as you read this Theory of
Operation.
All Mermaid "cool only" air conditioning units are controlled and function exactly the
same, regardless of the btu capacity of the unit. Units equipped with a "heat option" are
controlled in the same manner as "cool only" units, but may employ completely different
concepts for producing heat. The digital thermostat is the master control of the system
and dictates the operational mode of the air conditioning unit through an electrical
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