Schreiber Chillers 50ACsf - Manual (Page 12)

50AC
motor. The refrigeration system will not run unless the water pump switch is in the
on position.
8. Set the temperature controllers to the desired temperature. If you want to stage
each refrigeration system set at 2 0 temperature difference between the two
temperature controllers. For example, if you want 48 0 F chilled water then set the
No. 1 thermostat at 48 0 F, and the No. 2 thermostat at 50 0 F. If the 1st stage cannot
maintain 48 0 F then the 2nd stage would start when the water temperature reaches
50 0 F. If the temperature is set below 36 0 F, antifreeze must be added to the water
return line. Never add more antifreeze than necessary, because it is a poor
conductor of heat.
9. With the temperature controller set, the compressor can be turned on by the
manual switch. The refrigeration system is now running. It should be noted that
there could be a two or three degree difference between the temperature control
setting and the dial thermometer. Use the dial thermometer as a guide. Once set,
the temperature controller will control the temperature of the water automatically.
10. This unit is not weatherproof and should not be installed outdoors. Outdoor
installation is possible in some areas of the country. Please check with the factory
for more information.
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