Install Instructions

www.emersonclimate.com/owcontrols
OMB Electronic Oil Level Management System
OMB Electronic Oil Level Management System
Instruction Sheet
PA-00301
November 2011
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA CUSTOMER SERVICE [phone]
FEATURES
• Selfcontainedunitwithoillevelsensorandintegralsolenoidto
manage oil level supply
• Hall-effectsensorforprecisemeasurementofoillevel
• AlarmandstatusindicationbyLEDs
• SPDToutputcontactforcompressorshutdownoralarming
• Easyinstallationbysightglassreplacement
• Adapterssuitableforvarioustypesofcompressorsincluding
conventional and scroll compressors
• Signalgeneratedbygravitybasedoat–notpronetoerrorsfrom
 foaminglikeopticalsensors
• Sacricialmagnetforreliableoperation
SAFETY INSTRUCTIONS
WARNING:Beforeopeninganysystem,makesurethepressureinthe
systemisbroughttoandremainsatatmosphericpressure.Failureto
comply can result in personal injury and/or system damage.
WARNING:TheOMBoperatesbyusingastrongmagneticsensor.It
isimportanttokeepthecontrolfreeofanysteelorironparticleswhich
couldaccumulateonitduringinstallation.Thesemayhamperorprevent
thecontrolfromoperating.
1. Readinstallationinstructionsthoroughly.Failuretofollowinstructions
mayresultinproductfailure,systemdamage,orpersonalinjury.
2. Donotopensystemunderpressure.
3. EnsuresupplyvoltageiswithinspeciedOMBlimits.
4. Disconnectsupplyvoltagefromsystem/OMBbeforeinstallation/ser-
vice.ComplywithlocalelectricalregulationswhenwiringOMB.
5. Donotexceedmaximumworkingpressure.
6. Keeptemperaturewithinnominallimits.
7. Workshouldbeperformedbyqualiedservicepersonneloralicensed
contractor.
SPECIFICATIONS
MaximumWorkingPressure .................... 640 psig
SolenoidMOPD .............................. 350 psig
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24VAC,50/60Hz
Solenoid Coil ASC2L .......................... 24VAC,50/60Hz
Current Consumption .......................... 0.6A
TimeDelayforLowLevelSignal ................. 10 seconds
TimeDelayAfterSetpointRecovery............... 5 seconds
AlarmDelayTime(includingalarmcontact)......... 120 seconds
AlarmSwitch................................. SPDT
Alarm Contact Rating .......................... 10A-125V,
5A-250V
RefrigerantCompatibility(notforusewith . . . . . . . . . . HFC,HCFC,CFC
ammablerefrigerantsorammonia)
RefrigerantTemperature........................ -40°to180°F
StorageandAmbientTemperature................ -40°to120°F
AmbientTemperature(Housing).................. -40°to120°F
OilSupplytting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ¼ Male SAE
Kit AUA for Copeland 6D Semi-Hermetic Compressors
1. Assurethatthereisnopressureinthecompressorcrankcase.Note
theoillevelanddrainthecrankcaseuntilitisbelowthelevelofthe
sightglass.Removethecompressorsightglassanddiscardthe
O-ring.
2. UsingtheO-ringprovided,installadaptertothecompressorusing
theoriginalsightglassbolts.Torqueto120in-lbs.
3. UsingtheO-ringandboltsprovided,installthecontrolunit.Usethe
boltsprovidedandtorqueto120in-lbs.
4. Connecttheoilsupplylinetothe¼inchmalearetting.Aclean-
ablestrainerisincorporatedintothetting.
5. MakewiringconnectionsinaccordancewithFigure1.
Important: The screw clamp style connector plugs used for the
power supply and solenoid coil must be unplugged from the cir-
cuit board to gain access to the wire clamp screws. Use a small
screwdriver to pry them outward.
6. Assurethereisproperoillevelinthecrankcase.
Kit ACA for Scroll Compressors
1. Assurethatthereisnopressureinthecompressorcrankcaseand
unscrewthesightglassfromthecompressor.Takenoteofthe
 originaloillevelsinceoilmaybelostwhenthesightglassis
 removed.Tipthecompressortoavoidoillossifpossible.
2. UsingPTFEtapeasasealant,threadtheadapterintothe
 compressorwiththethreeholeangeinstalledontheadapter.
Torquethepipethreadto30-40ft.-lbs.Takecarenottoscratchthe
O-ringsealsurfaceoftheadapter.
3. UsingtheO-ringandboltsprovided,installthecontrolunitto
 theadapterange.Thetopofthecontrolunitmustbeperfectly
 horizontalwiththeoilinletttingtotheleft.Torquetheboltsto
 120in.-lbs.(Note:Boltholesarenotsymmetrical.)
4. Connecttheoilsupplylinetothe¼inchmalearetting.Aclean-
ablestrainerisincorporatedintothetting.
5. MakewiringconnectionsinaccordancewithFigure1.
Important: The screw clamp style connector plugs used for the
power supply and solenoid coil must be unplugged from the cir-
cuit board to gain access to the wire clamp screws. Use a small
screwdriver to pry them outward.
6. Assurethereisproperoillevelinthecrankcasebeforerestartingthe
compressor.
INSTALLATION INSTRUCTIONS
1. Readinstallationinstructionsthoroughly.
2. Assurethatyouhavetheappropriatemountingadapterkitforthe
compressor.SeeTable1.Forsemi-hermeticcompressors,seesteps
1through5.
3. O-ringreplacementkit(KS30368)canbeusedonbothOMBandOMA
controls.
Adapter Kit Thread Adapter Kit Application
 ACA 3/4"x14NPTF CopelandGlacier,ZF,ZS,ZB
 ACB 1-1/8"x12UNF CopelandA/CSpecter
 ACD 1-1/4"x12UNF CopelandA/CSummitSeries
 ACE 1-3/4"x12UNF CopelandLCSSeries
 AUA None Copeland6DSemi-Hermetic
Table 1 – Mounting Adapter Kit Applications*
* IMPORTANT NOTE:Typicalmodels–Alwayscheckcompressorthreadssizebecausenumer-
ouschangeshavebeenincorporatedthroughtheyears.