High Pressure Drop; Downstream Air Supply Interrupted - Parker CDAS HL 050 Guide D'utilisation

6.2 High Pressure drop

A high pressure drop will result in low pressure gauge readings or intermittent operation of the downstream equipment.
Possible Cause
Filtration has not been correctly maintained.
The inlet parameters have changed.
The compressor is not functioning correctly.
There is a pressure loss from the system.
The dryer is not powered up.
An isolation valve is closed or partially closed.

6.3 Downstream air supply interrupted

An interruption of the air supply downstream will result is a rapid loss of system pressure and failure of the downstream equipment.
Possible Cause
The compressor is not functioning correctly.
There is a pressure loss from the system.
The dryer is not powered up.
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Action Required
If the element and float drain have been installed longer than 12
months ensure that they are both changed.
Verify that the float drain is operating correctly.
If the inlet flow-rate has increased ensure that the filters and dryer
are re-sized accordingly.
If the inlet temperature has increased verify that the filters are within
specification. Ensure that the oil vapour removal filters and the dryer
are re-sized accordingly.
If the inlet pressure has changed ensure that the filters and dryer
are re-sized accordingly.
Contact Parker for details on particle counting and air quality air
measurement.
Check the documentation supplied by the compressor manufacturer
for troubleshooting guidance.
Check for leaks in the piping and at connection points.
Ensure that all drain cocks and pressure relief valves are closed.
Check to see if the downstream flow-rate demand has increased.
Verify that the dryers power indicator is illuminated. If the dryer is
not powered check the isolator and circuit breaker.
Check the position of all isolation valves.
Action Required
Check the documentation supplied by the compressor manufacturer
for troubleshooting guidance.
Check for leaks in the piping and at connection points.
Verify that the dryers power indicator is illuminated. If the dryer is
not powered check the isolator and circuit breaker.
Check the dryer fault indicators.