18
DME012-RX - DME080-RX
6. Troubleshooting guide
In the unlikely event that a problem occurs on the equipment, this troubleshooting guide can be used to identify the probable cause and
remedy.
Warning
Troubleshooting should only be attempted by competent personnel. All major repair, and calibration work should
be undertaken by a domnick hunter trained, qualified and approved engineer.
Problem Indication Probable Cause Remedy
Poor dewpoint Crystals go clear in the outlet
sight glass (DME040 - 080-RX
Models only)
Entrained Water
Excessive air flow demand
Inlet pressure too low
Excessive inlet air
temperature
Insufficient purge air flow
Exhaust silencers blocked
Contaminated desiccant
Check pre-filtration drains.
Check actual flow against rated flow of
dryer
Check for recent additions to air system
Check against technical specification
Check against technical specification
Factory set for 6 bar g (87 psig) system
pressure.
domnick hunter trained personnel to
adjust
Change by domnick hunter trained
personnel
Eliminate source of contamination.
Desiccant change by domnick hunter
trained personnel
Electrical fault Flashing Yellow LED Hardware fault
Contact domnick hunter customer
services
High differential pressure Pressure gauges Excessive outlet flow Check and regulate air demand
Failure to purge
No depressurisation and poor
dewpoint
Purge valve blocked or shut.
Exhaust silencers blocked.
domnick hunter trained personnel to
adjust.
Change by domnick hunter trained
personnel
Outlet air flow stops
Downstream pressure drops.
Yellow LED “OFF”
Electrical fault.
Blown fuse in plug.
domnick hunter trained personnel to
adjust.
Change by domnick hunter trained
personnel
Constant depressurisation Erratic air flow from exhaust Damaged valve.
Change by domnick hunter trained
personnel
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