Service manual

17
Low Side Pressure Changes
The chart above shows the low side pressure changes through the cycles of a CLR60 unit.
It shows that during a harvest cycle, the low side pressures climb to nearly 60 psig. When
the freeze cycle starts, the pressure quickly drops to approx. 17 psig and throughout the
freeze cycle it continues to slowly drop to approx. 7 psig just before the harvest cycle.
This unit was operating in a 75° farenheit ambient temperature and the incoming
water temperature was 50° farenheit.
If a unit is operating in conditions other than these, the low side pressures will be dif-
ferent. A unit operating in a warmer ambient environment or using warmer water will
have higher pressure readings. A unit in a cooler ambient environment or using cool-
er water will have lower pressure readings.