Check out these case studies of real life examples on problems that where spotted and solved using Vista Data Vision before any critical damage occurred.
VDV Retail Monitoring – Brochure
VDVRM is a comprehensive monitoring systems solution tailor made for small and large refrigeration systems as found in Supermarkets and Convenience Stores.
Operation of a Refrigeration System
When studying the behavior of refrigeration systems it is useful to know that such systems may work very well indeed and as designed. There may be days, weeks and months of perfect operation.
Termostat Error
This refrigeration system is for Fresh Meat with case temperature setpoint of 29°F. The compressor rack supplies five Fresh Meat cases. One day something happened!
TEV Problem
The graph show 4 days of operation. Blue trend line is the temperature of the Meat Vault. The green line is the setpoint of 30°F. The yellow and red lines are the alarm markers of High and HighHigh settings. Defrost runs every 6 hours.
Defrost Heater Problem
The graph shows 28 days of operation of three Frozen Food cases. The green line is the setpoint of -4°F. The yellow and red lines are the alarm markers of High and HighHigh settings. Defrost runs once every day.
Compressor Error
The graph shows 2 days of operation. Blue trend line is the temperature of the Deli Island. The green line is the setpoint of 31°F. The yellow and red lines are the markers of High and HighHigh alarm settings. Defrost runs every 6 hours.
Icing Up
The graph shows 2 weeks of operation of two Frozen Food cases. The green line is the set point of -4°F. The yellow and red lines are the alarm markers of High (H) and HighHigh (HH) settings. Defrost runs once very day.
System Defrost Clock not working
The graph shows 2 months of operation of five Frozen Food cases. The green line is the setpoint of -4°F. The yellow and red lines are the alarm markers of High and HighHigh settings. Defrost runs once every day.
Evaporator fans
The graph shows 2 days of operation of two multi deck Meat cases. The green line is the setpoint of 27°F. The yellow and red lines are the alarm markers of High and HighHigh settings. Defrost runs once 6 hours.
Tuning of a refrigeration system
These two refrigeration systems are serving Frozen Food cases. In both examples operations needs to be tuned. On the left hand side of each graph is the operation as it had been for a long time. On the right hand side of each graph is the operation after it had been tuned by a refrigeration expert using VDVRM as the tuning aid.