Parker Domnick Hunter PNEUDRI DME012 User Manual

Contents

Parker Domnick Hunter PNEUDRI DME012 User Manual Manual pdf 15 page image

TroubleshootingEN146 TroubleshootingIn the unlikely event that a problem occurs on the equipment, this troubleshooting guide can be used to identify the probable cause and remedy.6.1 Dewpoint FailureA dewpoint failure will result in there being water in the downstream piping and equipment.Troubleshooting should only be attempted by competent personnel. All major repair, and calibration work should beundertaken by a domnick hunter trained, qualified and approved engineer.Possible Cause Action RequiredThe inlet parameters have changed.If the inlet flow-rate or the inlet temperature have increased ensurethat the filters and dryer are re-sized accordingly.If the inlet pressure has changed ensure that the filters and dryerare re-sized accordingly.The condensate is not being drained.Verify that all condensate drains are functioning correctly.Check that the drain hoses are free from kinks and obstructions.Ensure that the isolation valves on the drains are fully open.The compressor is not functioning correctly. Check the documentation supplied by the compressor manufacturerfor troubleshooting guidance.The compressor capacity has changed. Ensure that the filters and dryer are sized accordingly.The after cooler is not functioning correctly.Test that condensate drain is operating correctly.Check that the cooling water system is functioning correctly and thatthe water temperature is within specification (water cooled systemsonly).Ensure that the after cooler and dust filter (if fitted) are clean (aircooled systems only).Ensure that the fan is functioning correctly (air cooled systems only).There is no wet air receiver fitted within the system.Install a wet air receiver and drain within the system (if possible).Ensure there is adequate drainage on the piping prior to the dryerpre-filtration. A water separator should also be installed before thedryer pre-filtration to ensure removal of bulk liquid.Filtration has not been correctly maintained.If the element and float drain have been installed longer than 12months ensure that they are both changed.Verify that the float drain is operating correctly.The dryer has been by-passed. If a bypass line has been installed on the system ensure that it isclosed. Use bypass filtration.The regeneration column pressure within the dryer is greater than350mbar. Contact a Parker domnick hunter approved service agent.There is a fault with the dryer timer. Contact a Parker domnick hunter approved service agent.There is a fault with the dryer valves. Contact a Parker domnick hunter approved service agent.The desiccant is approaching the end of its useful life. Contact a Parker domnick hunter approved service agent.