1.2 SUPPLY AIR CARE FOR CONTROL SYSTEMS THE PROBLEM Most pneumatic control systems have no means of alerting building operators to air leaks. Excessive compressor run time is normally the only indicator available, which may result from deterioration of the compressor or air leaks in the control system. Both generate the same symptom. Which is causing the current problem? Some causes of leaks in your control system are: (1) Diaphragms rupture in control components. (2) Vandals break thermostats off walls. (3) Renovation workers break airlines. (4) Cable installers break airlines. Leaks in your control system will: (1) Cause poor control in areas of low pressure. (2) Cause changeover controllers to be on the wrong mode for summer/winter or day/night. (3) Cause your compressor to run excessively. Excessive run time on the compressor will: (1) Shorten the life expectancy of your compressor. (2) Waste electricity. (3) Over-heat the pump, increasing the probability of passing destructive oil in to the control system. Having no means to assess the cause of your compressor's excessive run time, you may: (1) Choose to change the compressor pump finding that the new unit runs excessively as well. The real problem being air leaks in the control system. (2) Choose to dedicate days of labour looking for air leaks that do not exist. The real problem being a deteriorated compressor pump. This report contains a simple solution allowing you complete confidence and control, identifying which path leads to correcting your problem. 9.163
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