Specifications
17
HeatlessRegenerativeDesiccantAirDryer
Maintenance
Priortoperforminganymaintenanceonthedryer,allpersonnelarestronglyadvisedtofamiliarize
themselves with the equipment by reading the entire contents of this operation manual. Aircel strongly
recommends the strict adherence of all the safety procedures prior to any performing any maintenance
activity on the dryer.
A. Thepressuredifferentialindicatorreferredtoasthe“Delta-P”isaverygoodindicatorofthestate
ofthefilterelements.Maintenancepersonnelmustpayattentiontothesetokeepthedryerrunning
withfullefficiencyChangefilterelementsonaregularbasis,onceayearmaximumfora1-shift
operation. Change more frequently if operating 2 or 3 shifts such as every 6 months.
B. Theusefullifeofafilterelementdependsonthequalityofair.Freeopenareasforinputand
exhaustwillensurelesserintakeofdirtandparticles.
C. Powdereddesiccantcanaccumulateinthemufflerandincreasethebackpressureintheregenerating
tower change mufflers on a regular basis typically every 2-3 months for optimum performance.
D. Oilandoilvaporcandrasticallyreducethelifeofthedesiccant.Takeprecautionstoeliminateall
traces of oil from the airflow
E. Fluctuatingdewpointindicatesunevendryingandregenerationbetweenthetowers,anexhaust
valvemaynotbeworkingproperlyormufflermaybecloggedordirty,alsovesseldiffuserscreen
may be clogged.
Weekly Checklist
1. Checkalldrainvalves,prefilter,afterfilterandseparators
2. Checkanypressuredifferentialindicators(Delta-P)onthepre-filterandafterfilter(filterelements
shouldstillbechangedonregularbasisonceayearmaximumfora1shiftoperation.Changemore
frequentlyifoperating2or3shiftssuchasevery6months.).
3. Checkdryerforcorrectoperation.
4. Verifydryerispurgingatthepurgeexhaust,afterdryerdepressurizes.
5. Checkthedewpoint(ifavailable)toensurethedewpointisbeingachieved.
6. Checkbackpressureinregeneratingtower,ifmorethanafewpsigonthepressuregauge,clean
orreplaceexhaustmufflers(Changemufflersonaregularbasistypicallyevery2-3monthsfor
optimumperformance).