2.2.2 D) The low pressure cut-out will open the circuit if the filters are very dirty, if there is a restriction in the airducts, and/or if the system is not fully charged due to refrigerant leaks, etc. This control is of theautomatic reset type.E)The high pressure cut-out will open the circuit if the condenser water circuit is fouled sufficiently to greatlyimpair the heat transfer, if there is a restriction in the water piping, if there is no water, if water regulatingvalve is set too high, and/or if the refrigerant system is greatly overcharged. This control is of the manualreset type.F) Resetting of the high pressure control switch, P/N 057R101, is accomplished by depressing manual resetlever located in the controls section of the NAC-600 (See Drawing #0700-1600).WARNING ------------ WARNING ------------------- WARNINGIF UNIT IS STORED IN AN AREA WHERE THE TEMPERATURE MAY FALL BELOWFREEZING, DRAIN ALL WATER FROM THE CONDENSER.WHEN SERVICING THE UNIT, PURGE AS LITTLE GAS AS POSSIBLE FOR THE UNITCONTAINS A CRITICAL CHARGE THAT FACTORY METERED TO 1/2 POUND.MINIMUM OPERATING CONDENSER WATER INLET PRESSURE OF 35 PSIG AT UNIT ISREQUIRED FOR SATISFACTORY PERFORMANCE.17
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