SPX Cooling Technologies 92-1322C user manual Operation, Operating Instructions

/ Operation /

Operating Instructions

To operate the heater system, visually check that the water level is above the sensor probe before energizing the power supply. The temperature control is preset at 45°F. The system will not energize unless the water level is above the sensor probe and the temperature of the water is below the

45° set point. The solid state relay card located in the control panel has a green and a red LED—see Figure 1. In a "ready" condition, with water

level above the sensor probe and temperature above 45°F both these LEDs will be off. If the red LED is illuminated this indicates a low water condition and the heaters will not operate. If the green LED is illuminated the heater elements are on.

Figure 1

Table 3

SOLID STATE RELAY CARD

CT			G2	RED
				BLK
120 N			T1 T2 G1
		RED GREEN		RED
	COM			BLK
24 240	NC NO		SH	SHIELD

LED INDICATORS

Red	Green
OFF	OFF	Ready, No Demand
ON	OFF	Low Water Level
OFF	ON	Heater On

PROBE

BASIN

Caution

Should water be drained, either intentionally or accidentally, from the basin, the basin heater MUST be checked manually to insure the power source to the heating element is OFF. Although equipped with a low liquid level sensor probe, contaminants on or around the probe may cause false readings allowing the element to remain energized under low or no water conditions. Do not re-energize the unit until the sensor probe is fully submerged in water.

IF THE UNIT IS ENERGIZED WHILE THE SENSOR PROBE IS NOT FULLY SUBMERGED IN WATER, COMBUSTION/FIRE MAY RESULT, WHICH COULD DAMAGE OR DESTROY THE TOWER AND MAY CAUSE DAMAGE TO PERSONS OR PROPERTY NEARBY.

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