Fault Diagnosis Table; Known Misuse - Sullair SAR024 User Manual

8. FAULT DIAGNOSIS TABLE

Problem
Poor Dewpoint
Electrical fault
High differential pressure Pressure gauges
Failure to purge
Outlet air flow stops
Constant depressurisationErratic air flow from exhaust

9. KNOWN MISUSE

Filters
Lack of filtration.
Installation of inlet filters remote from the dryer inlet head, allowing possible condensation to occur
between filters and dryer.
Blow down valve upstream of filters causing back flow / possible collapse of filter element.
Installing filters in wrong flow direction.
Opening inlet valve too quickly, causing initial high differential pressure across filter element.
Differential pressure gauge/indicator fitted wrong way around giving false differential pressure reading.
Combining drain pipes from filters to a single drain valve.
Inlet / outlet head
Pipe diameter too small.
Pipework unsupported.
Inlet pipework taken from low point of manifold range, allowing bulk water intrusion into the dryer.
Control box/electric's
Incorrect wiring configuration by user, or incorrect supply voltage.
No neutral or earth wire fitted by user to dryer.
Additional Items
Use of non recommended componentry.
Untrained / unauthorised maintenance or installation personnel used.
Subsequent increase in air consumption without relation to dryer flow capacity.
Purging of pneumatic system and dryer with cleaning agents that have the potential to damage desiccant
material.
Covers removed or loose during operation.
Indication
Crystals go pink in outlet
moisture indicator
Flashing Yellow LED
No depressurisation
and poor dewpoint
Downstream pressure drops
Yellow LED "OFF"
Probable cause
Entrained water
Excessive air flow demand
Inlet pressure too low
Excessive inlet air temperature
Insufficient purge air flow
Exhaust silencers blocked
Contaminated desiccant
Hardware fault
Excessive outlet flow
Purge valve blocked or shut.
Exhaust silencers blocked
Electrical fault
Blown fuse in plug
Damaged valve
7
Remedy
Check pre-filtration and 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.
Sullair trained personnel to adjust
Change by Sullair trained personnel
Eliminate source of contamination. Desiccant
change by Sullair trained personnel
Contact Sullair customer services
Check and regulate air demand
Sullair trained personnel to adjust
Change by Sullair trained personnel
Contact Sullair customer services
Change by competent personnel
Change by Sullair trained personnel