Gardner Denver RNC Series User manual

SERVICE DEPARTMENT: [phone]
REFRIGERATED
TYPE
COMPRESSED
AIR DRYERS
INSTRUCTION MANUAL
RNC Series
Models: RNC100, RNC125, RNC150,
RNC200, RNC250, RNC300,
RNC400, RNC500, RNC600,
RNC750
5002737 Rev. B 02/09
18-2-670 RNC100-750 New Platform 1st Edition
33F......................39F
1C.......................4C
CONTENTS
GENERAL SAFETY INFORMATION ...........................2
RECEIVING, MOVING, AND UNPACKING.................. 2
1.0 INSTALLATION ..................................................3
2.0 OPERATION.......................................................5
3.0 MAINTENANCE .................................................8
SIZING ................................................................... 10
ENGINEERING DATA (MODELS 100-250) ............... 11
ENGINEERING DATA (MODELS 300-750) ............... 12
WIRING DIAGRAM............................................13-17
DIMENSIONS / WEIGHTS .......................................18
TROUBLESHOOTING GUIDE...................................19
PARTS LIST............................................................ 21
WARRANTY...........................................................24

2
GENERAL SAFETY INFORMATION
1. PRESSURIZED DEVICES:
This equipment is a pressure containing
device.
• Donotexceedmaximumoperating
pressure as shown on equipment
serial number tag.
• Makesureequipmentisdepressurizedbefore
workingonordisassemblingitforservice.
2. ELECTRICAL:
This equipment requires electricity to
operate.
• Installequipmentincompliance
with all applicable electrical codes.
• Standardequipmentissuppliedwithelectrical
enclosuresnotintendedforinstallationinhazardous
environments.
• Disconnectpowersupplytoequipmentwhen
performinganyelectricalservicework.
3. BREATHING AIR:
• Air treated by this equipment may
notbesuitableforbreathingwithout
furtherpurication.
 Refertoapplicablestandardsand
specicationsfortherequirementsforbreathing
quality air.
RECEIVING, MOVING, AND UNPACKING
A. RECEIVING
Thisshipmenthasbeenthoroughlychecked,packedand
inspectedbeforeleavingourplant.Itwasreceivedin
goodconditionbythecarrierandwassoacknowledged.
CheckforVisibleLossorDamage.Ifthisshipmentshows
evidenceoflossordamageattimeofdeliverytoyou,
insistthatanotationofthislossordamagebemadeon
the delivery receipt by the carrier’s agent.
B. UNPACKING
CheckforConcealedLossorDamage.Whenashipment
hasbeendeliveredtoyouinapparentgoodorder,but
concealeddamageisfounduponunpacking,notifythe
carrier immediately and insist on his agent inspecting
the shipment. Concealed damage claims are not our
responsibilityasourtermsareF.O.B.pointofshipment.
C. MOVING
Inmovingortransportingdryer,donottipdryerontoits
side.
D. STORAGE/SHUT DOWN
Dryershouldnotbestoredoutside(either
packedorunpacked)orexposedtotheweather.Damageto
electrical and control components may result.
IMPORTANT:WATER-COOLEDUNITS-Ifunitisshutdownbelow
freezingtemperatures,thewater-cooledcondensermay
freezeandcausepermanentdamage.Condensermustbe
drained when the unit is shut down.
Important:Donotstoredryerintemperaturesabove130°F
(54.4°C).

3
IMPORTANT:
READPRIORTOSTARTINGTHISEQUIPMENT
1.0 INSTALLATION
1.1 Location
A. Fortypicalplacementinacompressedairsystem,see
drawing.
B. Aircompressorintake–Locateaircompressorsothat
contaminantspotentiallyharmfultothedryer(e.g.
ammonia)arenotdrawnintotheairsystem.
C. Dryershouldbeinstalledinamoderatelyheated,well
ventilated area. Avoid locations immediately adjacent
tocoldexteriorwindowsorwalls,oradjacenttohigh
temperature ovens or boilers.
D. Clearances:Minimumrequirementsforfreeairowand
service access
 Front36inches(914mm)
 Back6inches(152mm)
 Sides36inches(914mm)
E. Standardunitsaredesignedtooperateinambients:
 Air-cooled:40to110°F(4to43°C).
 Water-cooled:40to130°F(4to54°C).
F. Installationsinaltitudesabove4500feet(1370meters)–
Dryerisadjustedtooperateinaltitudesupto4500feet
(1370meters).Ifdryerisinstalledinanaltitudeabove
this,andhasnotbeenpresetatthefactoryforthis
altitude,contactmanufacturer’sServiceDepartment.
G. Theinstallationofaexibleconnectionpriortothe
dryerisrecommendedtopreventpossibledamagefrom
vibration.
NOTE:Outdoorinstallation–Standardunitsaredesigned
forindoorinstallation.Contactmanufacturerifinstalling
outdoors.
1.2 Mounting
Mountthedryeronalevelsolidsurface.Holesareprovidedin
thedryerbasetopermanentlymountthedryertotheoor.
Aftercooler
Separator
DryerOil Removal
Filter
Compressor
Control Panel
Air Inlet
Air Outlet
Electrical Entry
(230 VAC)
Drain Outlet
Condensor
Moisture Separator
Coalescing Filter
(Option)
Float Drain
(Standard)
Model
RNC100
Electric Time Drain
with 3-Way Valve
(Standard)
Control Panel
Air Inlet
Air Outlet
Drain Outlet
Coalescing Filter
(Option)
Moisture Separator
Condenser
Electrical Entry
(230VAC)
Models
RNC125 & RNC150
Air Inlet
Air Outlet
Condenser
Drain Outlet
Control Panel
Electrical Entry
RS 232 Entry
3-Way Drain Valve
Moisture Separator
Coalescing Filter
(Option)
Solenoid Valve
Models
RNC200, RNC250, RNC300, RNC400, RNC500, RNC600, & RNC750

4
1.3 Piping connections
A. AirInlet-Connectcompressedairlinefromairsource
toairinlet.(Referencemarkingsondryeror,seecallout
drawingonpages18forairinlet/outletconnection
locations)
RefertoSerialNumberTagformaximum
workingpressure.Donotexceeddryer’sMaximumWorking
Pressure.
NOTE:
Installdryerinairsystemathighestpressurepossible(e.g.
beforepressurereducingvalves).
NOTE:
Installdryeratcoolestcompressedairtemperaturepossible.
Maximuminletcompressedairtemperature:110°F(43°C).
Ifinletairexceedsthistemperature,precooltheairwithan
aftercooler.
B. Air Outlet—Connect air outlet to downstream air lines.
C. By-passpiping—
Ifservicingthedryerwithoutinterruptingtheairsupply
isdesired,pipingshouldincludeinletandoutletvalves
andanairby-passvalve.
D. Water-cooledmodels-coolingwaterinletandoutlet
1. Connectcoolingwatersupplytocoolingwaterinlet.
2. Connectcoolingwaterreturnlinetocoolingwater
outlet connection.
NOTE:Strainerandwaterregulatingvalvearesuppliedon
water-cooledmodels.Also,itisrecommendedtoaddwater
inlet/outlettemperatureandpressuregaugestothewater
piping.
1.4 Electrical connections
IMPORTANT:Usecoppersupplywiresonly.
A. Dryerisdesignedtooperateonthe
voltage,phase,andfrequencylistedon
the serial number tag.
B. Ifdryerissuppliedwithacordandplug,
installinareceptacleofpropervoltage.
C. Electricalentryonlargerdryersisthroughaholeinthe
cabinet.Itislocatedontherightsidepanelwhenfacing
thefrontoftheunit.Connectpowersourcetothe
terminal strip in the electrical enclosure as shown on the
electrical schematic included with the dryer.
 Ifoptionaldisconnectissupplied,useentryholein
disconnect enclosure.
NOTE:Refrigerationcondensingunitisdesignedtorun
continuously and should NOTbewiredtocycleon/offwith
the air compressor.
1.5 Moisture separator
A. Model100:
 Separator(andOilRemovalFilterwhere
applicable)hasaninternaldrainwhich
automatically discharges collected
condensate.
 Models125-750:
 Separator(andOilRemovalFilterwhereapplicable)hasan
externaldrainwhichautomaticallydischargescollected
condensate.
NOTE:Itmaybedesirabletopipethecondensatefrom
theAutomaticDrainoutlettoasuitabledrain.
B. Model100withstandardpaneloroptionalI-Controller
Level1ONLY:
 Separatorhasaknurledttingwithexibledraintubing
attached.Besureknurledttingistightenedbyturning
counter-clockwisebeforeoperatingdryer.
TO CLOSE
TURN COUNTERCLOCKWISE
C. Models125-750
Formanualdraining,convenientdryerdepressurization,
anddrainvalvemaintenance,athree-wayvalveassembly
is installed between the drain port on the moisture
separatorandthedrainvalve.Modelswiththeoptional
coldcoalescinglterareequippedwithaseparatedrain
valveandthree-wayvalveassembly.OnModels125and
150,thethree-wayvalveispanelmountedinsidethe
dryercabinet.OnModels200-750,thethree-wayvalveis
mountedtothebottomoftheseparatorvesselusinga
quickdisconnecttting.Reviewthefollowingforproper
drainfunction:
• AutomaticDraining-Valvehandleshouldbe
positionedparalleltothevalvebody(asshown),with
the arrow on the handle pointing toward the drain
valve.Inthisposition,condensatewillowfromthe
bowl to the drain valve.
• DrainIsolation(Shutdown)-Valvehandleshallbe
turnedperpendiculartothevalvebody(rotate90°).
Inthisposition,condensateowisshutoff.
MRD100-150
Models 125-150
MRD200-750
Models 200-750
• ManualDraining-Drainvalvehandleshallberotated
slightly past the drain isolation position to allow
throttlingthroughthevalveformanualdischarge
anddepressurization.

5
• NOTE:(Models200-750only)Thequickdisconnect
ttingallowsremovaloftheentiredrainassembly.
However, the unit must be depressurized prior
to disassembly or serious injury may occur.
NOTE:Dischargeisatsystempressure.Drainlineshouldbe
anchored.
NOTE: Condensate may contain oil. Comply with applicable
laws concerning proper disposal.
2.0 OPERATION
2.1 Minimum/Maximum operating conditions
A. Maximuminletairpressure:refertodryerserialnumber
tag
B. Minimuminletairpressure:30psig(2.1kgf/cm
2
)
C. Maximuminletairtemperature:120°F(49°C)
D. Maximumambienttemperature:
 Air-cooledmodels:110°F(43°C)
 Water-cooledmodels:130°F(54°C)
E. Minimumambienttemperature:40°F(4°C)
2.2 Start-up
IMPORTANT:Energizedryerdisconnectswitch(providedby
others,seeNEC)24hoursbeforerefrigerationcompressor
isstarted!Neverusethedisconnectswitchtoshut-down
thedryerforaextendedperiodoftime(exceptforrepair).
Failuretofollowtheseinstructionsmayresultinanon-
warrantablecompressorfailure.
I - Controller Level 2 - Model 100 (Optional)
Models 125-750 (Standard)
Condensate
Draining
Drain
Push-to-Test
On/Off
Switch
SwitchLegend
PowerOn
Light
Compressor On
Light
DewPoint
Temperature
Indicator
33F.................. ....39F
1C.................... ...4C
I - Controller Level 1 - Model 100 (Standard)
On/Off
Switch
PowerOn
Light
DewPoint
Indicator
Table 1 Timed drain illuminated LED Settings
Inlet Pressure
75 100* 125 150 200 225
Dryer Model
RNC100 3 3 4 4 4 4
RNC125 3 3 3 3 4 4
RNC150 2 3 3 3 3 4
RNC200 2 3 3 3 3 3
RNC250 2 2 2 3 3 3
RNC300 1 2 2 2 3 3
RNC400 1 2 2 3 3 4
RNC500 1 1 2 2 3 3
RNC600 1 1 1 2 2 3
RNC750 1 1 1 1 2 2
* Recommendedandpre-programmedfactorysettingsforeachRNC
Seriesmodeldryer.AssumesCAGIADF100inletconditionswith100°F
ambientand10°Fair-cooledaftercoolerapproachtemperature.
NOTE:Itisrecommendedthatdryerbestarted15minutes
beforecompressedairowbegins.
NOTE:Ifthereisnopowertothecontrolboardfora
periodoftwoweeksormore,itmayreturntothedefault
mode.
1. ConrmOn/OffSwitchisinthe“Off”position.
2. Onwater-cooledmodels:after24hours,begincooling
waterow.
3. Checkforproperelectricalvoltage.
4. Energizedryer.Greenpower-onlightwillilluminate.
5. Slowlypressurizeunitairsidebyopeninginletisolation
valve.Checkforleaks.
6. After15minutes,openoutletisolationvalveslowly.
7. Closeairby-passvalve.
8. IdentifyControllerondryer.
A. ModelswithI-ControllerLevel1or2-proceedto
Step9.
B. ForModelswithI-ControllerLevel3,seeSection2.6
forfurtherinstructions.
9. ToggleON/OFFswitchtotheONposition.
2.3 Timer Drain
 (OnlyModelswithI-ControllerLevel2)
NOTE:TheTimerDrainLEDlevelhasbeenpre-programmed
atthefactoryforyourspecicRNCSeriesdryer.
Programmingisbaseduponaminimumof100psisaturated
inletairpressureandmaximumenergyefciency.Thedrain
opentimeisxedatonesecondandasmallamountofair
willbeexhaustedwitheachcycle.Generally,noadjustmentto
the timer is required.
Ifwaterispresentdownstreamofthedryer,
alwaysverifythatanycondensatedrainsinstalledupstreamof
thedryeraredrainingproperlybeforeattemptingtoreadjust
theLEDsetting.
1. Forminimuminletairpressuresthatfallbetween
columnvalues,thesettingforthelowerpressureis
recommended.(i.e.selectthe100psicolumnvaluesfor
124psiinletpressurelistedinTable1.)
2. Wherethedryerisconsistentlyoperatingatlessthan
maximumcapacity,itmaybepossibletoincreasetheLED
setpointtominimizeairloss.Discretionaryadjustments
tothedryershouldonlybemadeonahot,humidday
whenthemaximumexpectedairloadisowingthrough
the dryer. Failure to do so may prevent the condensate
fromdrainingcompletelywhenoperatingunderpeak
load conditions.

6
Programming Buttons
Right Arrow
LeftArrow
Enter
2.6 I-Controller Level 3 –
(Optional on models RNC200-RNC750)
RNCSeriesdryersupgradedwiththeoptionalI-Controller
Level3includetextmessagingontheVacuumFluorescent
TextDisplay(VFTD),Alert/Alarmconditiondisplaypanel
warninglights,processdiagramLEDindicatorlights,Demand
OperatedCondensateDrain(s)asstandardfeatures.
Programming, Start-up and, Operating Instructions
RNCSeriesdryersarepre-programmedinaccordancewith
themanufacturersrecommendations.Programmingdetails
arelistedwithinTable3.
NOTES:
a) Programmingcanbeaccomplishedwhiledryerisin
eithertheONorOFFmode.
b) TheOPERATIONsub-directorylistautomaticallyscrolls
sequentiallyevery3seconds.Pressthe(ENTER)key
repeatedly to scroll manually.
VFTD Text Viewing Instructions
1.Press(Right-Arrow)or(Left-Arrow)toselectfromthe
followingMainMenuitems:OPERATION,
MAINTENANCE,CONFIGURATION,UNITSETUP
2. Pressthe(ENTER)keytoaccessthesub-directoryofthe
MainMenuitemofyourchoice.
NOTE:Press(ENTER)repeatedlytosequencethroughthe
sub-directorytextdisplayslistedinTable3.
2.4 Timer Drain Programming Mode
1. Pressthe“DrainIntervalProgram”button(the
“CondensateDraining”LEDwillstarttoash,and
theilluminatedLEDonthe“DewPointTemperature
Indicator”willidentifythefactorysettingfor“Minutes
BetweenDrainCycles.”(SeeTable1)
2. Pressandreleasethe“DrainIntervalSelector”buttonto
sequencethe“MinutesBetweenDrainCycleLED’s”from
lefttorightuntilreachingyourselection.The“Red”LED
isnotused(ReferenceTable2for“DrainCycleIntervals”)
3. Toinitiatethenewsetting,pressthe“DrainInterval
Program”button(thiswillstorethenewsettingandexit
theprogram).
4. ExitingtheProgramwillcausetheTimerDrainto
discharge and begin a new cycle.
NOTE:Failuretoperformstep3within25secondsof
completingstep2willcausetheunittorevertbacktothe
previous setting.
NOTE:Intheeventofabrieforextendedperiodofpower
loss,theunitwillretaintheexistingprogramsettingandwill
beginanewcycleoncepowerisreapplied.Haddrainbeen
readytodrainbeforethelossofpower,thedrainbowl’s
capacitywouldpreventdownstreamooding.Condensate
willdraincompletelywithinacoupleofcycles.(Manually
pressingthe“Push-to-Test”buttonwoulddrainbowl
immediately)
2.5 Operating check points
Checkthefollowingonaperiodicbasis:
A.Greenpoweronlightisilluminated.
B.Dewpointindicatorisingreenarea.
C.Condensateisdischargingfromdrain.
Table 2 LED Legend
LED
Illuminated
Minutes
between
Drain Cycles
1st 1
2nd 3
3rd 5
4th 10
5th 20
6th 30
7th 40
8th 50
9th 60
CondensateDraining
(Flashesin
programmingmode)
DrainInterval
Program
DewPoint
TemperatureIndica-
tor
DrainInterval
Selector
(LEDilluminated
indicates drain cycle
setting)
I-Controller Level 3 - (Optional)
VacuumFluo-
rescentText
Display
On
Switch
Off
Switch
Gauge
LED’s
Temperature
LED’s
DrainLED AlarmLight Warning/
Maintenance
Light
Reset
Compres-
sor Running
Light
DrainPush-
to-Test
Power-on
Light
Programming
Buttons

7
2.7 Electronic Demand Drain – I-Controller Level 3
A. Anautomaticelectricdemanddrain(EDD)
discharges condensate removed by the
separator.
B. AllstandardI-ControllerLevel3modelsare
suppliedwithoneEDD.Modelswiththe
additional(optional)coldcoalescinglteraresupplied
withasecondEDD.
C. Models200-750
 Formanualdraining,convenientdryerdepressurization,
andEDDservice,athree-wayvalveassemblyhasbeen
installedatthebottomofthemoistureseparator(and
coldcoalescinglterwhereapplicable).Reviewthe
followingforproperdrainfunction:
• AutomaticDraining-Valvehandleshouldbe
positionedparalleltothevalvebody(asshown),with
thearrowonthehandlepointingtowardtheEDD.
Inthisposition,condensatewillowfromthebowl
totheEDD.
• DrainIsolation(Shutdown)-Valvehandleshallbe
turnedperpendiculartothevalvebody(rotate90°).
Inthisposition,condensateowisshutoff.
• ManualDraining-Drainvalvehandleshallberotated
slightly past the drain isolation position to allow
throttlingthroughthevalveformanualdischarge
anddepressurization.
• NOTE:Thequickdisconnectttingallowsremoval
oftheentiredrainassembly.However, the
unit must be depressurized prior to
disassembly or serious injury may occur.
NOTE:Dischargeisatsystempressure.Drainlineshouldbe
anchored.
NOTE: Condensate may contain oil. Comply with applicable
laws concerning proper disposal.
D. Verifythatisolationvalvesareopen.Ifthedrainfailsto
dischargeafterthevalveisenergized,theelectronic
controlcircuitwillrepeatedlyenergizethevalveinan
attempttoclearthedischargeport.If,after60seconds,
thedrainstillfailstodischarge,thecontrolcircuitthen
switchestothealarmmode.Inthismodethevalve
isde-energizedandtheredalarmlightisactivatedon
the drain and the dryer controller. The valve is then
automaticallyenergizedevery4minutesfor5seconds.
Checkthedrainoperation.Pushdrain(push-to-test)
buttonontheEnergyManagementMonitorcontrol
boardtoenergizedrain.Aowofcondensateand/orair
should be present at the drain outlet. The alarm mode
automaticallyclearsafterthedrainreturnstonormal
operation.
Programming Instructions
(CONFIGURATION or UNIT SET UP modes only)
1. Press(Right-Arrow)or(Left-Arrow)toselectfromthe
followingMainMenuitems:OPERATION,MAINTENANCE,
CONFIGURATION,UNITSETUP
2. Pressthe(ENTER)keytoaccessthesub-directoryofthe
MainMenuitemofyourchoice.
Note:Press(ENTER)repeatedlytosequencethrough
thesub-directorytextdisplaysaslistedinTable3.
3. Toreprogramyourselection,pressandreleaseand/or
holddownthe(+)or(-)keyuntilyoureachthedesired
value
4. Press(ENTER)toacceptthenewsetting.
NOTES:
a) Displaywillautomaticallyreturntonormaloperating
mode30secondsafterlastkeyisdepressed.
b) Programmingautomaticallyrevertsbacktopriorsettings
in30secondsif(ENTER)isnotdepressed.
Start-up Instructions - I-Controller Level 3
(Continued from Section 2.2)
1. Energizedryer.
A. GreenPOWERONlightwillilluminate.
B. VFTDwillread“GARDNERDENVERIC3(version)”Text
displayautomaticallysequencesat3secondintervals
inthefollowingorder:
a. AMBIENTAIRTEMP(°For°C)
b. INLETAIRTEMP(°For°C)
c. TIME/DATE(hours:minutes:seconds/month/
day/year)
d. DRYEROFForON(status)
e. DEW POINT TEMP (°F or °C)
C. LEDs–TheGREENThermometerLEDsontheProcess
Diagramwillilluminatewhenthecorresponding
temperaturepointisshownintheVFTD.
2. DepressGreen(START)button.
A. TheGreen“COMPRESSORON”panellight 
andprocessdiagramLEDwillilluminate.
NOTE:Ifdryerisstartedwhile“DRYEROFF”isdisplayed
withintheVFTD,itwillchangeto“DRYERON”withthenext
display rotation.
Table 3
Operation Maintenance Conguration UnitSetUp
(view) (view) (programmable*) (factory
setting) (programmable*) (factory
setting)
DewPoint
Temp(°F/°C)
Hours
toService
GardnerDenver
IC3Ver(xxx) n/a *DewPointSetPt
(50°F-95°F)
50°F/
10°C
Ambient Temp
(°F/°C)
Total
Hours
*SetLanguageEng.,
Spanish,French English *AmbientSetPt
(95°F-122°F)
105°F/
41°C
InletAirTemp
(°F/°C)
*SetDate
MO/DA/YR Current *InletAirSetPt
(95°F-140°F)
105°F/
41°C
HR:MIN:SEC
MO/DA/YR
*SetTime
HR:MIN:SEC
Eastern
Standard
*ServiceInterval
(0-4000Hours)
2000
Hours
Dryer
ON(OFF)
*SetTemp
°F/°C F

8
1
2
3
4
E. Condensateentersthereservoir(1) through the inlet
port.Whenthecondensatelevelinthereservoircovers
thecapacitancesensor,anelectronicsignalissenttothe
solid state countdown processor. The processor delays
theopeningofthesolenoidvalveforagivenperiod
oftime.Oncethetimehaselapsed,thesolidstate
processortransmitsinformationtoenergizethecoilin
the solenoid valve (2).Themagneticforceofthecoil
causes the solenoid core (3)tomove,closingthepilotair
supplylineandopeningthepilotairexhaustline.After
the pilot air above the diaphragm (4)isvented,pressure
inthereservoiropensthedischargeportandforces
the condensate through the discharge port and outlet
piping.
2.8 Operating Instructions – I-Controller Level 3
1. Checkthefollowingonaperiodicbasis:
a. Power-onlightglows(green)indicatingpowertothe
dryer
b. Compressor-onlightglows(green)indicatingthe
refrigerationcompressorisoperating
c. VFTDisautomaticallyscrollingevery3seconds
throughOPERATIONmodereadingsandsettings
d. Warning/MaintenanceAlertlight(yellow)isNOT
ashing
e. Alarmlight(red)isNOTashing
f. Condensateisdraining
2. ALARM/ALERTFaultConditionActivation
 (SeewiringdiagramforN/Ocontactlocation.)
 Uponactivation,textidentifyingtheFaultwillbe
displayedontheVFTD.AnAudibleAlarmwillsound,a
FlashingPanellight(Warning/Yellowor,Alarm/Red)and,a
FlashingProcessDiagramLED(GreenorRed)combineto
indicatethefaultcondition.Whereapplicable(seetable
2onpage20)anormallyopen(N/O)circuitwillactivatea
customer supplied remote alarm.
NOTE:IfyellowAlertlightor,redAlarmlightAREashing,
seefaultconditionidentiedinVFTDwindow.Referencethe
conditionintheTroubleshootingGuideonpage20.
3. REMOTESTART/STOPFunction
 Softwareprogrammingallowsthedryertobestopped
and started by a remotely controlled signal. Consult
factoryfordetails.
4. DOWNLOADABLEMEMORYFunction
 Softwareprogrammingallowsthedryertostorethelast
10alarmrelatedevents.Outputcommanddeliversthe
eventscompletewiththedate,timeand,faultcondition.
Consultfactoryfordetails.
5. RS-232&RS-485CommunicationsCapable
 Dedicatedpinarrangementisusedtomonitordryer
operationfromahostcomputer.Consultfactoryfor
details.
3.0 MAINTENANCE
3.1 Condenser coil
A. Air-cooled-cleanoffaccumulateddustanddirtmonthly
or as necessary in dirty environments.
B. Water-cooled-cleanstrainermonthly,moreoftenif
required.Shutoffwater,removesmallplugtorelieve
pressure,thenremovelargeplugtoremovestrainer.
Clean strainer and replace.
3.2 Moisture Separator/Oil Removal Filter
NOTE:Prepackagedmaintenancekitsareavailable
thatincludeallnecessarylterandtimeddrainvalve
components.Maintainmaximumperformanceand
efciencywithGenuineParts.Seepage21forordering
information.
When to replace the Separator/Filters
 Replacelterelementwhenpressuredropacrossdryeris
excessiveorannually.
Dryershavetheoptionofoneortwostagesofltration.
Thedirectionsforservicingeitherlterisidentical.
 Whenremovingliquidsatratedowconditions,an
increaseinpressuredropwilloccurastheseparator/
lterelementsbecomeloadedwithsolidparticles.
Procedure for Separator / Filter Element Replacement
THISFILTERISAPRESSURECONTAININGDEVICE.
DEPRESSURIZEBEFORESERVICING.Iflterhasnotbeen
depressurizedbeforedisassembly,anaudiblealarmwillsound
whenthebowlbeginstoberemovedfromthehead.Ifthis
occurs,stopdisassembly,isolateandcompletelydepressurize
lterbeforeproceeding.
1. Isolatedryer(closeinletandoutletvalvesifinstalled)or
shutoffairsupply.
2. Depressurizelterbyslowlyopeningmanualdrainby-
pass valve.
3. Removebowl
a. FormodelsRNC100throughRNC150-bayonet
mount-pushbowlup,turnbowl1/8thturntoyour
left,andpullbowlstraightdown
b. FormodelsRNC200throughRNC750-threaded
bowls-unscrewbowlfromheadusinghand,strap
wrench or C spanner.
4. Cleanlterbowl
5. Replacemoistureseparatorelement.
a. ReplacingcompleteGradeBelement.
1)Pulloffoldelementanddiscard
2)Makecertaino-ringsonmaleofreplacement
element adaptor are in place and push element
intolterhead.
NOTE:DonothandleOilRemovalFilterelementsbyoutside
foamcover.Handlebybottomendcaponly.

9
3.3 Check separator daily to be sure automatic
drain is discharging.
NOTE:Unitswithtwostageltrationhavetwosetsofdrains.
3.4 Blow down separator weekly by pushing test
button on control panel.
3.5 Rebuild drain mechanism annually.
 Tofacilitateservice,maintenancekitsareavailable.
Seepage21.
6. Aftermakingcertainthato-ringinsidetopofbowl(and
onbayonetmountheads,wavespring)areinplace,
reassemble bowl to head.
NOTE:Makecertaino-ringisgenerouslylubricated.(Use
lubricantprovided)
NOTE:Wavespringendsshouldbepointeddowntoprevent
thewavespringfrominterferingwithreassembly.
NOTE:Threadedbowltoheadconnection,generously
lubricatethreadswithahighgrade/temperatelubricant150
°F,66°C.(Uselubricantprovided).
7. Disassemblecondensatedrainvalve(s).
8. RebuilddrainvalvesusingGenuineParts.Seepage21
fororderinginformation.
Model RNC100
Bowl
O-Ring Wave Spring
Pneumatic Pilot
Operated Drain
Tube
Separator Element
or Optional Oil Removal
Element
Timer Drain Valve
(ONLY with I-Controller Level 2)
Models RNC125 thru RNC150
Separator Element
or Optional Oil Removal
Element
Wave
Spring
Bowl
O-ring
Timer Drain Valve - Standard
Models RNC200 thru RNC750
Separator Element or
Optional Oil Removal Element
Timer Drain Valve - Standard with I-Controller Level 2
Demand Drain - I-Controller Level 3 Only
Drain Quick Disconnect

10
SIZING
Determiningdryercapacityatactualoperatingconditions
Todeterminethemaximuminletowcapacityofadryer
atvariousoperatingconditions,multiplytheratedcapacity
fromTable1bythemultipliersshowninTable2.
Example:Howmanyscfmcananair-cooledmodelRNC750
handlewhencompressedairtobedriedisat200psigand
100°F;ambientairtemperatureis80°F?
Answer:750x1.22x1.12 =1,025scfm.
TABLE 1
Ratedcapacity(scfm)andpressuredrop@100psiginlet
pressure,100°Finlettemperature,and100°Fambient
temperature
RNC MODEL 100 125 150 200 250
Rated capacity
of air-cooled
models (scfm)
60 Hz
50 Hz
100
84
125
105
150
125
200
170
250
210
RNC MODEL 300 400 500 600 750
Rated capacity
of air-cooled
models (scfm)
60 Hz
50 Hz
300
250
400
340
500
420
600
540
750
630
TABLE 2
Aircapacitycorrectionfactors(Multipliers)
INLETCOMPRESSEDAIRCONDITIONS
INLET
PRESSURES
INLETTEMPERATURES
80°F 90°F 100°F 110°F 120°F
psig kgf/cm227°C 32°C 38°C 43°C 49°C
50
80
100
125
150
175
200
3.5
5.6
7.0
8.8
10.5
12.3
14.0
1.35
1.50
1.55
1.63
1.70
1.75
1.80
1.05
1.17
1.23
1.31
1.37
1.42
1.47
0.84
0.95
1.00
1.07
1.13
1.18
1.22
0.69
0.79
0.82
0.91
0.95
0.99
1.03
0.56
0.66
0.70
0.74
0.80
0.84
0.89
COOLINGMEDIUM*
AMBIENT
TEMPERATURE
MULTIPLIER
°F °C
80
90
100
110
27
32
38
43
1.12
1.06
1.00
0.94
*Air-cooledmodels;water-cooledmodelsuse1.15multiplierifcoolingwater
isbelow35°C,95°F.

11
ENGINEERING DATA (MODELS 100-250)
Air System Data
Rated Flow Capacity at 100°F, 100 psig Inlet, 100°F Ambient Temperature 100 125 150 200 250
Maximum / Minimum Inlet Air Pressure (compressed air at inlet to dryer) 232 psig (16 barg) / 30 psig (2 barg)
Maximum / Minimum Inlet Air Temperature (compressed air at inlet to dryer) 120°F (49°C) / 40°F (4°C)
Maximum / Minimum Ambient Temperature Air-cooled: 110°F (43°C) / 40°F (4°C), Water-cooled: 130°F (54°C) / 40°F (4°C)
Outlet Air Temperature (nominal at rated conditions) 85°F (29°C)
Refrigeration System Data
Refrigeration Capacity @ 35°F Evaporator & 100°F Ambient (BTU/hr) 60 Hz 4820 6030 8900 15200
50 Hz 4020 5690 7420 12700
Refrigerant Type R-134A
Refrigerant Charge See Data Tag on Dryer
Suction Pressure Setting - Hot Gas Bypass Valve (psig) 30.5 psig (2.1 barg)
Compressor Control Ranges (out-in) High N/A 281 - 190 psig (19.4 - 13.1 barg)
Low N/A 22 - 34 psig (1.5 - 2.3 barg)
Air-Cooled Condensers
Air Flow Across Condenser (cfm) (air-cooled models) 60 Hz 300 450 710 1070
50 Hz 250 370 590 890
Condenser Fan Switch Setting (in-out) Fan 1 110 - 70 psig (7.6 - 4.8 barg) 113 - 78 psig (7.8 - 5.4 barg)
Fan 2 N/A
Water-Cooled Condensers
Water Regulating Valve Setting 135 psig (9.3 barg)
Required Available Water Pressure Differential 40 psig (2.8 barg) - minimum
Flow Required with 85°F Cooling Water (gallons per minute) 60 Hz N/A 1.1 2.0
50 Hz N/A 0.9 1.7
Electrical Data
Nominal Voltage 115/1/60 208-230/3/60
Min. - Max. Voltage 104 - 127 187 - 253
Input Power @ Rated Flow (watts) 932 1280 1298 1255 1962
Rated Load Amps** 10.2 15.2 7.5 10.4
Locked Rotor Amps** 51.0 66.3 51.0 66.0
Minimum Circuit Ampacity 13.6 18.3 10.5 15.9
Branch Circuit Fuse Size (amps) 20 25 15 20
Resistance (ohms) 4.3 S / 0.7 R 3.2 S / 0.4 R 1.8 1.3
Nominal Voltage 208-230/1/60 460/3/60
Min. - Max. Voltage 187 - 253 414 - 506
Input Power @ Rated Flow (watts) 932 1280 1298 1255 1962
Rated Load Amps** 5.4 9.0 3.6 4.7
Locked Rotor Amps** 30.0 33.5 25.0 33.0
Minimum Circuit Ampacity 7.3 10.5 5.2 7.5
Branch Circuit Fuse Size (amps) 15 15 15 15
Resistance (ohms) Main/Start 9.0 S / 2.3 R 7.9 S / 1.6 R 7.4 5.0
Nominal Voltage 100/1/50 575/3/60
Min. - Max. Voltage 90 - 110 518 - 633
Input Power @ Rated Flow (watts) 680 1019 991 1255 1962
Rated Load Amps 10.2 15.2 3.6 4.7
Locked Rotor Amps 51.0 66.3 25.0 33.0
Minimum Circuit Ampacity 13.6 18.3 4.2 6.0
Branch Circuit Fuse Size (amps) 20 25 15 15
Resistance (ohms) 4.3 S / 0.7 R 3.2 S / 0.4 R 7.4 5.0
Nominal Voltage 240/1/50 380-420/3/50
Min. - Max. Voltage 216 - 264 342 - 462
Input Power @ Rated Flow (watts) 680 1019 991 1002 1613
Rated Load Amps** 4.5 8.3 3.6 4.7
Locked Rotor Amps** 21.0 53.0 25.0 33.0
Minimum Circuit Ampacity 6.2 9.9 5.2 7.5
Branch Circuit Fuse Size (amps) 15 15 15 15
Resistance (ohms) 19.5 S / 3.3 R 10.5 S / 1.8 R 7.4 5.0
* For 60 Hz, 35°F Evaporator, 100°F Ambient; for 50Hz, 35°F Evaporator, 77°F Ambient
** Compressor Only

12
ENGINEERING DATA (MODELS 300-750)
Air System Data
Rated Flow Capacity at 100°F, 100 psig Inlet, 100°F Ambient Temperature 300 400 500 600 750
Maximum / Minimum Inlet Air Pressure (compressed air at inlet to dryer) 232 psig (16 barg) / 30 psig (2 barg)
Maximum / Minimum Inlet Air Temperature (compressed air at inlet to dryer) 120°F (49°C) / 40°F (4°C)
Maximum / Minimum Ambient Temperature Air-cooled: 110°F (43°C) / 40°F (4°C), Water-cooled: 130°F (54°C) / 40°F (4°C)
Outlet Air Temperature (nominal at rated conditions) 85°F (29°C)
Refrigeration System Data
Refrigeration Capacity @ 35°F Evaporator & 100°F Ambient (BTU/hr) 60 Hz 15200 19200 22000 30500
50 Hz 12700 16000 18300 25400
Refrigerant Type R-134A
Refrigerant Charge See Data Tag on Dryer
Suction Pressure Setting - Hot Gas Bypass Valve (psig) 30.5 psig (2.1 barg)
Compressor Control Ranges (out-in) High 281 - 190 psig (19.4 - 13.1 barg)
Low 22 - 34 psig (1.5 - 2.3 barg)
Air-Cooled Condensers
Air Flow Across Condenser (cfm) (air-cooled models) 60 Hz 1070 2470 1680 2170
50 Hz 890 2060 1400 1810
Condenser Fan Switch Setting (in-out) Fan 1 113 - 78 psig (7.8 - 5.4 barg)
Fan 2 N/A 183 - 124 psig (12.6 - 8.6 barg)
Water-Cooled Condensers
Water Regulating Valve Setting 135 psig (9.3 barg)
Required Available Water Pressure Differential 40 psig (2.8 barg) - minimum
Flow Required with 85°F Cooling Water (gallons per minute) 60 Hz 2.0 2.1 4.9 6.8
50 Hz 1.7 1.8 4.1 5.6
Electrical Data
Nominal Voltage 208-230/3/60
Min. - Max. Voltage 187 - 253
Input Power @ Rated Flow (watts) 1999 2031 2680 2910 4120
Rated Load Amps** 10.4 11.4 13.9 22.1
Locked Rotor Amps** 66.0 75.0 88.0 115.0
Minimum Circuit Ampacity 15.9 20.0 19.7 30.4
Branch Circuit Fuse Size (amps) 20 25 30 45
Resistance (ohms) 1.3 1.1 1.0 0.7
Nominal Voltage 460/3/60
Min. - Max. Voltage 414 - 506
Input Power @ Rated Flow (watts) 1999 2031 2680 2910 4120
Rated Load Amps** 4.7 5.1 7.1 9.6
Locked Rotor Amps** 33.0 40.0 44.0 63.0
Minimum Circuit Ampacity 7.5 9.6 10.4 15.2
Branch Circuit Fuse Size (amps) 15 15 15 20
Resistance (ohms) Main/Start 5.0 4.1 4.0 2.7
Nominal Voltage 575/3/60
Min. - Max. Voltage 518 - 633
Input Power @ Rated Flow (watts) 1999 2031 2680 2910 4120
Rated Load Amps 4.7 5.1 7.1 9.6
Locked Rotor Amps 33.0 40.0 44.0 63.0
Minimum Circuit Ampacity 6.0 7.7 8.3 12.2
Branch Circuit Fuse Size (amps) 15 15 15 20
Resistance (ohms) 5.0 4.1 4.0 2.7
Nominal Voltage 380-420/3/50
Min. - Max. Voltage 342 - 462
Input Power @ Rated Flow (watts) 1622 1667 1992 2040 2860
Rated Load Amps** 4.7 5.1 7.1 9.6
Locked Rotor Amps** 33.0 40.0 44.0 63.0
Minimum Circuit Ampacity 7.5 8.1 10.4 15.2
Branch Circuit Fuse Size (amps) 15 15 15 20
Resistance (ohms) 5.0 4.1 4.0 2.7
* For 60 Hz, 35°F Evaporator, 100°F Ambient; for 50Hz, 35°F Evaporator, 77°F Ambient
** Compressor Only

13
COMPRESSOR HARNESS
PE
T2
T1
FAN 1 HARNESS
IO
PE
GROUND
STUD
L2
L1
L2
230 VAC
CUSTOMER SUPPLIED
L1 PE
POWER ON
PILOT LIGHT
T2
T2
T2
T1
T1
PE
T2
T1 T1
FPS 1
FAN 1
MTR2
START RELAY
SR
SR
L3
L3
M6
5
SCAPACITOR 4
OVERLOAD
313
MTR1
COMPRESSOR
R
C
S
120 VAC
POWER CORD SUPPLIED
WIRING DIAGRAM
I-ControllerLevel1
Model100(120/230VAC)
I-ControllerLevel2
Model100thru150(115or208-230V/60Hz,100or240V/50Hz)
21
20
19
18
17
16
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
T1
T2
T1
CONT 1
L3
L2
L1
T3
T2
T1
4
CAPACITOR
START RELAY
MTR1
COMPRESSOR
ML3
13
SL3 SR
R
S
C
OVERLOAD
SR
COMPRESSOR HARNESS
1
C
PE
FAN 1 HARNESS
FPS 1
T1
T2
FAN 1
MTR2
THERMISTER
THERMISTER
NEUTRAL
COMPRESSOR ON
DRAIN NEUTRAL
DRAIN LINE
LINE
BROWN
BLUE
GRN/YELLOW
GRN/YELLOW
TO GROUND BAR
TEST ALM
120VAC
1
3
2
L1
3
PE
PE
OPTIONAL DRAIN
2
3
1120VAC
ALM
TEST
CONT 1
HEATER HARNESS
HEATER 1
N
1L1
H2
H1
-2NC-1NC
TC1
1
O I
N
A2
A1
COMPRESSOR
CONTACTOR
CONT 1
L1
3
BROWN
BLUE
TO GROUND BAR
TO GROUND BAR PE
TO GROUND BAR
TO GROUND BAR PE
GARDNER DENVER
IC1 LEVEL BOARD
DRAIN HARNESS
DRAIN HARNESS
CUSTOMER CONNECTION
GROUND BAR
DRAIN
L1
L1
N
L1
L1
T2
3
L1
3 3
1
1
N
N
N
L1
L1
L1
L1
L1
L1
N N
N
N
1L1
N PE
J5
7
6
4
5
3
2
1
NOTES: JUMPER J5-1 TO J5-3 AND J5-5 TO J5-7 FOR 120 VAC

14
WIRING DIAGRAM
I-ControllerLevel2
Models200thru600(230-400-460V/3/50-60Hz)
CUSTOMER CONNECTION
L1 L2 L3
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
21
27
26
25
24
23 L1
L3
L2
L3
L1
L1
L2
L3
COMPRESSOR
MTR1
MTR2 FAN 1
T1
T2
T3
FAN 2
TB2
PE
PE
TB2
20
L1
L2
L3
CONT 1
TB2
PE
MTR3
-1NC -2NC H1 H2
1L2
L3
HEATER 1
PE
TB2
22 L1 L3
T1
T2
T3
T1
T2
T3
T2
42
43
41
40
39
38
37
36
35
34
33
32
31
30
29
28
TB2
X
(4 Terminal Blocks)
N
TB2
XN
TO SHEET 02 TO SHEET 02
L1
L3
XN
FPS 1
FPS 2
COMPRESSOR HARNESS
HEATER HARNESS
FAN 1 HARNESS
FAN 2 HARNESS
CONT 1
PEL3L2L1
(4 Terminal Blocks)
REF SHEET 01 LINE 19
REF SHEET 02 LINE 18
Optional Fan
(for 500-600 models only)
FU1
H1H2H3H4H5
FACTORY SET TO 460V
H6 H1575V
H6 H2460V
H6 H3400V
H6 H4230V
208V H5H6
L1L2
X2
XFX3
X1
FU3
FU2
H6
TO LINE 22
FROM LINE 21
L1
L2
L3
L3
T1
T2
T3
T1
T2
T3
T3
TB1
FROM SHEET 01 FROM SHEET 01
X
X
TB2
N
CONT 1
COMPRESSOR
CONTACTOR
IC2 LEVEL BOARD
A1 A2
4 N
LINE
DRAIN LINE
DRAIN NEUTRAL
COMPRESSOR
IO
1
TB2
N
HPS/LPS SENSOR HARNESS
LPSHPS
TB2
2
NEUTRAL
N
TB2
CONT 1
-4NO -3NO
1
TB2
X
TEST ALM
24VAC
1
3
2
DRAIN HARNESS
3
TB2
PE
TB2
THERMISTER
THERMISTER
N
X
X
TB2
N
2 2 4
5
1
OPTIONAL DRAIN
X
3
PE
X
N
X
X N
21
20
19
18
17
16
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
X
X
PE
3
X
DRAIN HARNESS
2
3
124VAC
ALM
TEST
TB2
PE
DRAIN HARNESS
X
TB2 X
X
1
3
BROWN
BLUE
GRN/YELLOW
GRN/YELLOW
BLUE
BROWN
2
PE PE PE PE
TB1
HARNESS LANDING
1
2
3 3
X X X
N N N
PE
L1L1
L2 L2
L3 L3 PE PE
INSTRUMENT BOARD LANDING
TB2

15
WIRING DIAGRAM
I-ControllerLevel2
Model750(230-400-460V/3/50-60Hz)
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
21
27
26
25
24
23 L1
L3
L2
L3
L1
L1
L2
L3
COMPRESSOR
MTR1
MTR2 FAN 1
T1
T2
T3
FAN 2
TB2
PE
PE
TB2
20
L1
L2
L3
CONT 1
TB2
PE
MTR3
-1NC -2NC H1 H2
1L2
L3
HEATER 1
PE
TB2
22
L1 L3
T1
T2
T3
T1
T2
T3
T2
42
43
41
40
39
38
37
36
35
34
33
32
31
30
29
28
TB2
X
(4 Terminal Blocks)
N
TB2
X
TO SHEET 02
N
TO SHEET 02
L1
L3
XN
FPS 1
FPS 2
COMPRESSOR HARNESS
HEATER HARNESS
FAN 1 HARNESS
FAN 2 HARNESS
CONT 1
(4 Terminal Blocks)
REF SHEET 01 LINE 20
REF SHEET 02 LINE 12
FU1
H1H2H3H4H5
FACTORY SET TO 460V
H6 H1575V
H6 H2460V
H6 H3400V
H6 H4230V
208V H5H6
L1L2
X2
XFX3
X1
FU3
FU2
H6
TO LINE 22
FROM LINE 21
L1
L2
L3
L3
T1
T2
T3
T1
T2
T3
T3
TB1
L3 L2
L1
DISCONNECT
L1 L2 L3 PE
CUSTOMER CONNECTION
FROM SHEET 01 FROM SHEET 01
X
X
TB2
N
CONT 1
COMPRESSOR
CONTACTOR
IC2 LEVEL BOARD
A1 A2
4 N
LINE
DRAIN LINE
DRAIN NEUTRAL
COMPRESSOR
IO
1
TB2
N
HPS/LPS SENSOR HARNESS
LPSHPS
TB2
2
NEUTRAL
N
TB2
CONT 1
-4NO -3NO
1
TB2
X
TEST ALM
24VAC
1
PE
2
DRAIN HARNESS
3
TB2
PE
TB2
THERMISTER
THERMISTER
N
X
X
TB2
N
2 2 4
5
1
OPTIONAL DRAIN
X
3
PE
X
N
X
XN
21
20
19
18
17
16
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
X
X
PE
3
X
DRAIN HARNESS
2
PE
124VAC
ALM
TEST
TB2
PE
DRAIN HARNESS
X
TB2 X
X
1
3
BROWN
BLUE
GRN/YELLOW
GRN/YELLOW
BLUE
BROWN
2
PE PE PE PE
TB1
HARNESS LANDING
1
2
3 3 X X X N N N
PE
L1L1
L2 L2
L3 L3 PE PE
INSTRUMENT BOARD LANDING
TB2

16
WIRING DIAGRAM
I-ControllerLevel3
Models200thru600(230-400-460V/3/50-60Hz)
COMPRESSOR
Optional Fan
(for 500-600 models only)
TO LINE 22
21
20
18
19
17
16
15
14
13
L1 L3
L2
CONT 1
-1NC
PE
HEATER HARNESS
-2NC 1L2
L3
TB2
TB2
PE
T3
T2
H1 H2
HEATER 1
FAN 2 HARNESS
FPS 2
MTR3 FAN 2
REF SHEET 02 LINE 11
REF SHEET 02 LINE 10
REF SHEET 01 LINE 20
03
10
11
12
09
08
07
06
05
04
L3
L3
L3
L2
L2
L3
L2
T3
T2
02
01
00
PETB1 L1 L2 L3
L1
L1
CUSTOMER CONNECTION
L1 L2 L3
L1
CONT 1
T1
PE
TB2
T1
T2
T3
T3
T2
T3
TB2
PE
T2
T3
T2
FAN 1 HARNESS
FPS 1
MTR2 FAN 1
MTR1
T1
T1
T1
COMPRESSOR HARNESS
43
42
X
TO SHEET 02
40
41
39
38
37
36
35
N
TO SHEET 02
25
(4 Terminal Blocks)
TB2
32
33
34 X
31
30
X
29
28
27
26
X3
FU3
X2
X1
FU2
H5H6 H4
FU1
H3 H2 H1
FROM LINE 21
L3
24
23 L1
22 L3
L1
L3
L1
(4 Terminal Blocks)
TB2
H4
FACTORY SET TO 460V
N
460V
400V
H1
H1 H5
N
230V
208V
L3L1
H1
H1 H3
H2
24VAC
TEST
ALM
24VAC
TEST
TB2
DRAIN 1 HARNESS
2
3
6
X
PE
5
6
7
8
N
X
2
3
6
X
N
8
7
6
DRAIN 1 HARNESS
PE
TB2
N
TB2
PE
TB2
8
8
7
7
6
6
TB2
5
5
TB2
TB2
4
PE
1
OPTIONAL DRAIN
1
PE
5
4
LPS
HPS
5
HPS/LPS SENSOR HARNESS
4
1
2
3
4
TB2
3
TB2
2
TB2
1
3
2
1
4TB2
5ALM
PE
TB2
N
TB2
X
TB2
TB2
X
N
PE
N
N
A1
CONT
CONTACTOR
COMPRESSOR
A2 TB2
TB2
TB2
13
12
14
9
X
TB2
12
13
8
7
X
9
TC1
TC3
TC2
14
1
2
24VAC IN
24VAC IN
00
02
03
01
7
6
C
3
4
5
NO
NC
2
1
POWER ON
DRAIN TEST
CONNECTION
FAULT
4
5
6
3
2
1
THERMISTOR #1
THERMISTOR #2
THERMISTOR #3
04
05
06
08
07
09
10
11
12
P4 (2PIN)
P3 (7PIN)
P2 (6PIN)
L2 L3
L1
13
14
L3 L2
L1
PE PE PE PE PE
PEPE
11
8
10
8 7 7
6
5 N N N 5
6
X
X
X
12
5
6
TB2
11
TB2
10
11
6
5
10
JUMPER
3
2
1
4
TERMINAL BLOCK LAYOUT
TB1 TB2
10
9
7
8
6
5
SSMP
DRAIN ALARM
REMOTE START / STOP
4
3
1
2
HPCO
LPCO
14
15
16
17
18
19
20
21
22
P1 (10 PIN)
13

17
WIRING DIAGRAM
I-ControllerLevel3
Model750(230-400-460/3/50-60Hz)
COMPRESSOR
TO LINE 22
21
20
18
19
17
16
15
14
13
L1 L3
L2 CONT 1
-1NC
PE
HEATER HARNESS
-2NC 1L2
L3
TB2
TB2
PE
T3
T2
H1 H2
HEATER 1
FAN 2 HARNESS
FPS 2
MTR3 FAN 2
REF SHEET 01 LINE 20
03
10
11
12
09
08
07
06
05
04
L3
L3
L3
L2
L2
L3
L2
T3
T2
02
01
00
PE
L1
L1
CUSTOMER CONNECTION
TB1 L1 L3L2
L1
CONT 1
T1
DISCONNECT
PE
TB2
T1
T2
T3
T3
T2
T3
TB2
PE
T2
T3
T2
FAN 1 HARNESS
FPS 1
MTR2 FAN 1
MTR1
T1
T1
T1
COMPRESSOR HARNESS
43
42
40
41
39
38
37
36
35
N
TO SHEET 02
25
(4 Terminal Blocks)
TB2
32
33
34 X
31
30
X
29
28
27
26
X3
FU3
X2
X1
FU2
H5H6 H4
FU1
H3 H2 H1
FROM LINE 21
L3
24
23 L1
22
L3
L1
L3
L1
(4 Terminal Blocks)
H4
FACTORY SET TO 460V
N
460V
400V
H1
H1
H5
TB2
N
230V
208V
L3L1
H1
H1
H3
H2
X
TO SHEET 02
13
P1 (10 PIN)
22
21
20
19
18
17
16
15
14
HPCO
LPCO
2
1
3
4
SSMP
DRAIN ALARM
REMOTE START / STOP
5
6
8
7
9
10
TB2 TB1
TERMINAL BLOCK LAYOUT
4
1
2
3
JUMPER
10
5
6
11
10
TB2
11 TB2
6
5
8 X X X
4
1
N N N 2 3 5 5
6
7
6
7
PE PE PE PE PE
L1
10
8
11
13 12
14
L1
PE
L3 L2 L2
L3
PE
P4 (2PIN)
P3 (7PIN)
P2 (6PIN)
12
11
10
09
07
08
06
05
04
THERMISTOR #1
THERMISTOR #2
THERMISTOR #3
1
2
3
6
5
4
POWER ON
DRAIN TEST
CONNECTION
FAULT
1
2
NO
NC
5
4
3
C6
7
01
03
02
00
24VAC IN
24VAC IN
2
1
14
TC3
TC2
TC1
9
X
7
8
13
12
TB2
X
9
14
12
13
TB2
TB2
TB2
A2
CONTACTOR
COMPRESSOR
CONT
A1 NN
PE
N
X
TB2
TB2
XTB2
N
PE
TB2
5ALM
4TB2
1
3
2
1
TB2
2
TB2
3
TB2
4
2
3
1
5
HPS/LPS SENSOR HARNESS
4
HPS
LPS
4
PE
1
OPTIONAL DRAIN
1
PE
5
4
TB2
TB2
55
TB2 66
77
88
TB2 PE
TB2 N
TB2
X
N
8
7
6
DRAIN 1 HARNESS
PE
6
3
2
PE
5
6
7
8
N
X
X
6
3
2
DRAIN 1 HARNESS
TB2
TEST
24VAC
ALM
TEST
24VAC

18
FRONT VIEW
BOTTOM VIEW
RIGHT SIDE VIEW
DETAIL A
A
"B"
"A"
"D"
"E"
"F"
"G"
"H"
"I"
"J"
"C"
Ø "K" MOUNTING HOLE
4-PLACES TYP.
"L" - I/O CONNECTIONS
CONDENSER AIR FLOW
Ø 1.00 (25MM) ELECTRICAL ENTRY
MODELS 100-150 (230 VOLT):
0.25-NPT DRAIN CONNECTION
MODELS 100-150
Ø 1.00 (25mm) ELECTRICAL ENTRY
MODELS 200-750:
RS-232 ACCESS: Ø .750 (19mm)
MODELS 200-750
0.25-NPT DRAIN CONNECTION
MODELS 200-600
2.500
6-FT POWER CORD
MODELS 100-150 (115 VOLT)
1/2-18 FPT I/O WATER CONNECTIONS
MODELS 200-750 ONLY
"M"
"N" "O"
33F......................39F
1C.......................4C
NOTE:DimensionsandWeightsareforreferenceonly.Requestcertieddrawingsforconstructionpurposes.
DIMENSIONS / WEIGHTS
Dimensions, inches (mm)
Model 100 125 150 200 250 300 400 500 600 750
A 37.56 (954) 37.56 (954) 37.56 (954) 38.60 (980) 38.60 (980) 45.38 (1153) 45.38 (1153) 58.06 (1475) 58.06 (1475) 58.06 (1475)
B 25.62 (651) 25.62 (651) 25.62 (651) 32.15 (817) 32.15 (817) 32.15 (817) 32.15 (817) 32.15 (817) 32.15 (817) 32.15 (817)
C 1.63 (41) 1.63 (41) 1.63 (41) 1.88 (48) 1.88 (48) 2.63 (67) 2.63 (67) 2.77 (70) 2.77 (70) 2.77 (70)
D 23.62 (600) 23.62 (600) 23.62 (600) 30.15 (766) 30.15 (766) 30.15 (766) 30.15 (766) 30.15 (766) 30.15 (766) 30.15 (766)
E 17.62 (448) 17.62 (448) 17.62 (448) 30.15 (766) 30.15 (766) 30.15 (766) 30.15 (766) 39.62 (1006) 39.62 (1006) 39.62 (1006)
F 19.62 (498) 19.62 (498) 19.62 (498) 32.15 (817) 32.15 (817) 32.15 (817) 32.15 (817) 41.62 (1057) 41.62 (1057) 41.62 (1057)
G 9.58 (243) 9.58 (243) 9.58 (243) 7.64 (194) 7.64 (194) 13.51 (343) 16.25 (413) 20.44 (519) 20.44 (519) 20.44 (519)
H 14.96 (380) 14.96 (380) 14.96 (380) 15.80 (401) 15.80 (401) 21.82 (554) 25.68 (652) 27.79 (706) 27.79 (706) 27.79 (706)
I 28.54 (725) 28.54 (725) 28.54 (725) 30.19 (767) 30.19 (767) 29.98 (761) 36.89 (937) 49.06 (1246) 49.06 (1246) 49.06 (1246)
J 25.02 (636) 25.02 (636) 25.02 (636) 26.04 (661) 26.04 (661) 25.74 (654) 32.82 (833) 44.78 (1137) 44.78 (1137) 44.78 (1137)
K 0.31 (7.9) 0.31 (7.9) 0.31 (7.9) 0.31 (7.9) 0.31 (7.9) 0.31 (7.9) 0.31 (7.9) 0.63 (16) 0.63 (16) 0.63 (16)
L 1 MPT 1 MPT 1 MPT 1.5 MPT 1.5 MPT 1.5 MPT 2 MPT 2.5 MPT 2.5 MPT 2.5 MPT
M N/A N/A N/A 4.56 (116) 4.56 (116) 4.56 (116) 4.56 (116) 4.81 (122) 4.81 (122) 4.81 (122)
N N/A N/A N/A 9.84 (250) 9.84 (250) 9.84 (250) 9.84 (250) 20.82 (529) 20.82 (529) 20.82 (529)
O N/A N/A N/A 3.13 (80) 3.13 (80) 3.13 (80) 3.13 (80) 3.13 (80) 3.13 (80) 3.13 (80)
Weight
lbs (kg) 251 (114) 273 (124) 279 (127) 425 (193) 463 (210) 527 (239) 571 (259) 684 (310) 691 (313) 734 (333)

19
TROUBLESHOOTING GUIDE
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
A) Water downstream of dryer. 1. Residual free moisture remaining in
downstream pipelines.
2. Air bypass system is open.
3. Inlet and Outlet connections are reversed.
4. Temperatures surrounding air lines
downstream of dryer have dropped below
dryers dew point rating.
5. Excessive free moisture (bulk liquid) at dryer
inlet.
6. Condensate not being automatically drained
Drain mechanism is clogged or inoperative.
Drain line is restricted or frozen.
Electric drains-timer not set to allow for
sufficient condensate removal.
7. Dryer overloaded resulting in elevated dew
point.
8. Refrigeration system not functioning.
Blow out system with dry air.
Check valve positions.
Check for correct connection.
Insulate or heat trace air lines exposed to low
ambients or dry air to lower dew point.
Install separator ahead of dryer.
Replace drain mechanism if inoperative.
Open drain line.
Electric drains-reset time so that all liquid is
discharged.
Check inlet air temperature and pressure, flow
rate (compressor capacity) and ambient air or
water temperature.
See D below.
B) High pressure drop across dryer. 1. Excessive air flow.
2. Freezing of moisture in evaporator because
of refrigeration system fault.
3. Separator or optional Oil Removal filter
element clogged.
Check flow rate.
See D below.
Replace filter element(s).
C) Dew point indicator in red area. 1. Dryer overloaded resulting in high air outlet
temperature.
2. Refrigeration system not functioning
properly resulting in high air outlet
temperature.
3. Dryer is running with no load.
See A 7.
See D below.
Light will go out when air flow is established.
D) Refrigeration system not
functioning properly.
1. Power on light off.
2. Compressor on light off.
3. Refrigeration compressor cycles on
and off.
a. Power failure.
a. ON/OFF switch is “OFF”.
b. Line disconnect switch open.
c. Blown fuses, open breaker.
d. Faulty wiring, loose terminals.
a. High or low ambient conditions.
b. Air-cooled models - Dirty, clogged
condenser fins, obstructed air flow across
condenser, or non functioning fan motor or
fan control switch.
Check power to unit.
Turn switch “ON”.
Close disconnect switch.
Check for continuity.
Have electrician check electrical connections.
Check min./max. temperature ranges.
Clean condenser and check for free air flow, if
problem persists contact qualified refrigeration
repairman or manufacturer’s service
department.

20
Troubleshooting Guide
I-ControllerLevel3
VFTD READING
(Fault conditions) POSSIBLE CAUSE(S) CORRECTIVE ACTION
ALERT AMBIENT TEMP
(HighAmbientAirTemperature)
1. Poorventilation Ensureventilationisadequateforheatload
Ensurecompressorisnotventilatedtowarddryer
ALERT INLET AIR TEMP
(HighInletAirTemperature)
1. Noaftercooleroncompressor
2. Dirtyaftercooler
3. PoorVentilation
Installanaftercooler
Cleanaftercooler
Ensureventilationisadequateforheatload
ALARM DEW POINT TEMP
(HighDewPointTemperature)
1. Refrigerantleak
2. SystemOverload
3. DirtyCondenser
Haveservicedbyaqualiedrefrigerationtechnician
Reviewambient,inlet,andairowconditions
Blowdustoutofcondenserns
SHUTDOWN LOW PRESSURE
(LowCompressorSuction
Pressure)
1. Lowambientcondition
2. Refrigerantleak
3. ImproperHotGasBypassValve
setting
Elevateambienttemperature
Haveservicedbyaqualiedrefrigerationtechnician
ProperlyadjustHGBV
SHUTDOWN HIGH PRESSURE
(HighCompressorDischarge
Pressure)
1. Fan(s)notworking
2. Highambientcondition
3. Systemoverload
Checkcondenserfanfunction
Ensureventilationisadequateforheatload
Ensurecompressorisnotventilatedtowarddryer
Reviewambient,inlet,andairowconditions
SHUTDOWN MOTOR PROTECT
(CompressorMotorOverload)
1. Motoroverloadstriggered
2. Refrigerantleak
Checkvoltage.Checkforshorttoground
Haveservicedbyaqualiedrefrigerationtechnician
ALERT MAINTENANCE 1. Pre-setMaintenanceinterval Blowdustoutofcondensers,verifydrainfunction,
checkpressuredropacrossdryer
ALARM DRAIN
(FailuretoDrainCondensate)
1. Failuretodischarge
condensate
Checkautomaticdischargelineforclosedhand
valveorkinkinhose
Clean and rebuild drain valve
VerifypowertovalvewithPush-to-Testbutton
I-CONTROLLER LEVEL 3
Alert/AlarmConditionIndicators        
TABLE 2
I-ControllerLevel3Alert/AlarmFaultStatusIndicatorGuide      
Text Window Fault Condition Panel Lights Process Diagram LEDs* Audible Alarm (1)
Fault
Notification
LCD text
Event
Identification
See Troubleshooting Section
Alarm
Red
Alert /
Maintenance
Yellow
Compressor
Green
Thermometer
Green
Gauge
Red
Separator /Filter
Drain
Green
Contacts N/O
Alarmed
Contacts N/C
Normal
ALERT AMBIENT TEMP High Ambient Air Temperature - Flashes ON/OFF Flashes - - - N/C
ALERT INLET AIR TEMP High Inlet Air Temperature - Flashes ON/OFF Flashes - - - N/C
ALARM DEW POINT TEMP High Dew Point Temperature Flashes - ON Flashes - - N/O N/C
SHUTDOWN LOW PRESSURE Low Compressor Suction Pressure Flashes - OFF - Flashes - N/O (2) N/C
SHUTDOWN HIGH PRESSURE High Compressor Discharge Pressure Flashes - OFF - Flashes - N/O (2) N/C
SHUTDOWN MOTOR PROTECT Compressor Motor Overload Flashes - OFF - - - N/O (2) N/C
ALERT MAINTENANCE Perform Standard Maintenance Reminder - Flashes ON - - - N/C
ALARM DRAIN Failure to Drain Condensate Flashes - ON - - Flashes N/O N/C N/C
* During an Alert/Alarm condition, the Process Diagram LED rotation ceases. The Fault based LED will “Flash” until the fault condition is resolved.
(1) Depress the (RESET) button to silence the Audible Alarm. The Fault Condition will remain visible in the VFTD text window until corrected.
(2) The Refrigeration Compressor will remain “”OFF”” until the fault condition is corrected.