Specifications

Semi-Annual Checklist
1. Removeandinspectallfiltersforexcessiveparticulateloadingandphysicaldamage–ifrequired
replaceprefilters,afterfilters,pilotairfilterandmufflers(filterelementsshouldstillbechangedon
regularbasisonceayearmaximumfora1shiftoperation.Changemorefrequentlyifoperating2
or3shiftssuchasevery6months.).
2. Checkpressuredifferentialindicatorandifitturnsred,replacetheelement.
3. Removeexhaustmufflers.Knockoutexcessparticulateandbackflowwithdrycompressedair.
Ifparticulatecannotberemovedcompletelychangetheexhaustmufflers.Checkbackpressure
inregeneratingtower,ifmorethanafewpsigonthepressuregauge,cleanorreplaceexhaust
mufflers.(Changemufflersonaregularbasistypicallyevery2-3monthsforoptimumperformance)
4. Checkdesiccantcondition.Powderinthemufflersisaindicationofthestatusofthedesiccant.
5. Checkallsolenoidvalves-coilconditionandcontrolcircuit.
6. Checkdryeroperation.
7. InspectandcleaninletandoutletAPV(AutomaticPistonValves).
Annual Checklist
1. Replaceelementsinprefilters,afterfilters,andpilotairfilter.
2. Replace mufflers.
3. Recalibratedewpointanalyzerprobe(ifused)sendbacktofactoryforrecalibration.
4. Checkinletandoutletvalvesealscleanorreplaceasneeded.
5. Checkdryerforproperoperation.
18
Maintenance (cont’d)
WARNING!
• Beforeanyserviceormaintenance
workisperformedonthe
refrigerated air dryer system,
disconnectpowersupplyandlock
out power supply and depressurize
system.
• Followproperlockout/tagout
procedures before performing
serviceormaintenancework.
• Followallsafetyprocedurespriorto
performing any maintenance activity
on the dryer.
AircelAHLDE-Series-Models1000-5000