Sullair DMD-100 - Troubleshooting; Common Problems and Solutions

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NOTES
TROUBLESHOOTING
Problem Indication Probable Cause Remedy
Poor Dewpoint n/a High inlet temperature Check after cooler condition and clean
as necessary
Entrained Water Check pre-filtration and pre-filtration
drains
Excessive air flow
demand
Check actual flow against rated flow of
dryer
Check for recent additions to 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 100 psi g system
pressure
Exhaust silencers
blocked
Change by Sullair trained personnel
Contaminated desiccant Eliminate source of contamination.
Desiccant change by Sullair trained
personnel
Electrical Fault Power LED ‘OFF’ Hardware fault Contact Sullair customer service
Failure to Purge No depressurisation
and poor dewpoint
Purge valve blocked or
shut
Sullair trained personnel to adjust
Exhaust silencer blocked Change by Sullair trained personnel
Outlet Air Flow Stops Downstream
pressure drops
No air suply to the dryer Check compressor air supply to dryer
Check all pipework and fittings for
leaks
Constant
depressurisation
Erratic air flow from
exhaust
Damaged valve Change by Sullair trained personnel