Parker DAS 1, User Manual, Page: 12 / 265

Safety Information EN
11
6 Troubleshooting
In the unlikely event that a problem occurs on the equipment, this troubleshooting guide can be used to identify the probable cause and remedy.
Troubleshooting should only be attempted by competent personnel. All major repair, and calibration work should be
undertaken by a Parker domnick hunter trained, qualified and approved engineer.
Problem Possible Cause Action Required
Poor dewpoint identified by water in the
downstream piping and equipment.
Entrained water. Check pre-filtration drains.
Excessive air flow demand.
Check actual flow against rated flow of dryer
Check for recent additions to the air system
Inlet pressure too low. Check against technical specification
Excessive inlet air temperature Check against technical specification
Insufficient purge air flow
Factory set for 6 bar g (87 psig) system pressure.
Parker domnick hunter trained personnel to
adjust.
Exhaust silencers blocked
Change by Parker domnick hunter trained
personnel
Contaminated desiccant
Eliminate source of contamination. Desiccant
change by
Parker domnick hunter trained
personnel
Electrical fault Hardware fault
Contact Parker domnick hunter customer
services
High differential pressure Excessive outlet flow Check and regulate air demand
Failure to purge
Purge valve blocked or shut.
Exhaust silencers blocked.
Parker domnick hunter trained personnel to
adjust .
Change by
Parker domnick hunter trained
personnel
Outlet air flow stops
Electrical fault.
Blown fuse in plug.
Parker domnick hunter trained personnel to
adjust .
Change by
Parker domnick hunter trained
personnel
Constant depressurisation Damaged valve.
Change by Parker domnick hunter trained
personnel
Warning