Quincy Compressor QOF 20 User manual

OIL-FREESCROLL
COMPRESSORS
QOF20,QOF22,QOF30
InstructionManual
Thismanualcontainsimportantsafetyinformationandshouldbemadeavailableto
all personnel who operate and/or maintain this product. Carefully read this manual
before attempting to operate or perform maintenance on this equipment.
ManualNo.2930 7140 30
November2014Edition

Table of Contents
Quincy Compressor
Section I - General Information
SafetyAlertSymbols ...........................................................................................................1
SafetyPrecautions ...............................................................................................................2
SparePartsOrderingInformation .......................................................................................3
Serial/ModelIdentificationPlate .........................................................................................3
Warranty ..............................................................................................................................4
Section II - Description
Generaldescription.............................................................................................................5
Flowdiagram.......................................................................................................................8
Regulating system .............................................................................................................10
Electricalsystem ................................................................................................................10
Electricdiagram.................................................................................................................11
Temperatureprotection.....................................................................................................11
Airdryer.............................................................................................................................12
Section III - Controller
General..............................................................................................................................14
Control panel.....................................................................................................................16
Iconsused .........................................................................................................................17
Main screen .......................................................................................................................22
Calling up menus...............................................................................................................26
Shutdown warning.............................................................................................................27
Shutdown ..........................................................................................................................31
Inputsmenu.......................................................................................................................32
Outputs menu ...................................................................................................................35
Counters............................................................................................................................36
Control mode selection.....................................................................................................37
Service menu.....................................................................................................................39
Setpoint menu...................................................................................................................43
Eventhistorymenu............................................................................................................45
Generalsettingsmenu ......................................................................................................46
Infomenu ..........................................................................................................................48
Weektimermenu ..............................................................................................................49
Testmenu ..........................................................................................................................59
Userpasswordmenu .........................................................................................................60
Webserver ........................................................................................................................61
Programmablesettings .....................................................................................................69
Section IV - Installation guidelines
Dimensiondrawing ...........................................................................................................72
Installationproposal ..........................................................................................................72
Electricalconnections........................................................................................................75
Pictographs........................................................................................................................76
Section V - Operating instructions
Initialstart-up.....................................................................................................................77
Starting ..............................................................................................................................78
Duringoperation ...............................................................................................................78

Table of Contents
Quincy Compressor
Stopping............................................................................................................................79
Takingoutofoperation .....................................................................................................79
Section VI - Maintenance
Preventivemaintenanceschedule.....................................................................................80
Servicekits.........................................................................................................................82
Disposalofusedmaterial ..................................................................................................82
Section VII - Adjustments and servicing procedures
Airfilter..............................................................................................................................83
Aircooler...........................................................................................................................83
Drivemotor .......................................................................................................................84
Safety valve .......................................................................................................................84
Beltsetexchangeandtensioning .....................................................................................85
Cleaning the compressor element ....................................................................................85
Replacement of the outlet pipe ........................................................................................87
Dryermaintenance ............................................................................................................88
Section VIII - Problem solving .......................................................................89
Section IX - Technical data
Electriccablesizeandfuses ..............................................................................................91
Reference conditions and limitations ................................................................................97
Compressor data...............................................................................................................98
Section X - Guidelines for inspection .........................................................102
Section XI - PED (Pressure Equipment Directive) .......................................103
Section XII - Declaration of conformity .......................................................104
Standard Terms and Conditions ..................................................................106

Section I - General Information
Quincy Compressor 1
• Safety Alert Symbols
• Safety Precautions
• Spare Parts Ordering Information
• Serial/Model Identification Plate
• Royal Blue Warranty
Safety Alert Symbols
DANGER!
This symbol identifies immediate
hazards which will result in severe
personal injury, death or substantial
property damage.
DANGER!
This symbol identifies life threatening
electrical voltage levels which will result
in severe personal injury or death. All
electrical work must be performed by
a qualified electrician.
CAUTION!
This symbol identifies hot surfaces
which could result in personal injury or
property damage.
IMPORTANT!
Throughout this manual we have identified key hazards. The following symbols identify
the level of hazard seriousness:
WARNING!
This symbol identifies hazards or unsafe
practices which could result in personal
injury, death or substantial property
damage.
CAUTION!
Identifies hazards or unsafe practices
which could result in minor personal
injury or property damage.
NOTICE!
Identifies important installation,
operation or maintenance information
which is not hazard related.

Section I - General Information
2 Quincy Compressor
Safety Precautions
Read this manual and follow all instructions
prior to installing or operating the
compressor.
Listed below are some, but not all, safety
precautions that must be observed with
compressors and compressed air systems.
WARNING!
Failure to follow any of these precautions
may result in severe personal injury,
death, property damage and/or
compressor damage.
•Airfromthiscompressorwillcause
severe injury or death if used for
breathingorfoodprocessing.Air
used for these processes must
meetOSHA29CFR1910.134or
FDA21XDE178.3570regulations.
•Disconnectandlockoutallpower
supplies to the compressor plus any
remote controllers prior to servicing the
unit.
•Neverassumeitissafetoworkonthe
compressor because it is not operating.
Many installations have automatic start/
stop controls and the compressor may
start at any time.
•Thiscompressorisdesignedforusein
the compression of normal atmospheric
aironly.Noothergases,vaporsor
fumes should be exposed to the
compressorintake,norprocessed
through the compressor.
•Relieveallpressureinternaltothe
compressorpriortoservicing.Donot
dependoncheckvalvestoholdsystem
pressure.
•Aproperlysizedpressurereliefvalve
must be installed in the discharge
piping ahead (upstream) of any shutoff
valve(blockvalve),heatexchanger,
orificeoranypotentialblockage
point.Failuretoinstallapressure
relief valve could result in the rupturing
or explosion of some compressor
component.
•Donotchangethepressuresettingof
the pressure relief valve, restrict the
function of the pressure relief valve, or
replace the pressure relief valve with
aplug.Overpressurizationofsystem
or compressor components can occur,
resulting in death, severe personal
injury or property damage.
•Neveruseplasticpipe,rubberhose,
or soldered joints in any part of the
compressedairsystem.Failureto
ensure system compatibility with
compressor piping is dangerous.
•Neveruseaflammableortoxicsolvent
for cleaning the air filter or any parts.
•Donotremoveanyguardsorcabinet
panels or attempt to service any
compressor part while the compressor
is operating.
•Donotoperatethecompressorat
pressures in excess of its rating.
•Observecontrolpaneldisplaysdaily
to ensure compressor is operating
properly.
•Followallmaintenanceproceduresand
checkallsafetydevicesonschedule.
•Neverdisconnectortamperwiththe
highairtemperature(HAT)sensors.
•Compressedairisdangerous,donot
play with it.

Section I - General Information
Quincy Compressor3
•Usethecorrectfluidatalltimes.
•Donotrelyonthedischargeairline
checkvalve.
•Donotoverrideanysafetyorshutdown
devices.
•Keepdoorsclosedduringoperation.
Theoperatingtemperatureofsome
components is sufficient to burn the
skin.
NOTICE!
These instructions, precautions
and descriptions cover standard
Quincy manufactured QSI® Series
air compressors. As a service to
our customers, we often modify or
construct packages to the customers
specifications. This manual may not be
appropriate in those cases.
NOTICE!
Every effort has been taken to ensure
complete and correct instructions have
been included in this manual, however,
possible product updates and changes
may have occurred since this printing.
Quincy Compressor® reserves the
right to change specifications without
incurring any obligation for equipment
previously or subsequently sold. Not
responsible for typographical errors.
Spare Parts Ordering Information
Quincy Compressor maintains replacement
parts for Quincy compressors and
accessories.Arepairpartslistisshipped
with all new machines. Order parts from
yourAuthorizedQuincydistributor.Use
only genuine Quincy replacement parts.
Failuretodosomayvoidwarranty.
Serial/Model Identification Plate
ReferencetothemachineMODEL,SERIAL
NUMBERandDATEOFORIGINALSTART-
UPmustbemadeinallcommunication
relativetopartsorders.Amodel/serial
number plate is located on the frame or in
the upper right corner of the control panel
door.

Section I - General Information
4 Quincy Compressor
Warranty
QuincyCompressor®IndustrialScrollProducts
QOF(2-30horsepowerONLY)BeltDriveCompressors
(Operatingat145PSIGfullloadpressureorless)
Standard Warranty
Quincy Compressor (Seller) warrants products of its own manufacture against defects in
workmanshipandmaterialsundernormaluseandservice,asfollows:
Packaged Compressors -Twelve(12)monthsfromdateofstart-uporeighteen(18)months
from date of shipment from the factory, whichever occurs first.

Section II - Description
Quincy Compressor5
• General description
• Flow diagram
• Regulating system
• Electrical system
• Electric diagram
• Temperature protection
• Air dryer
General description
Introduction
QOF20,QOF22andQOF30arestationary,oilfreecompressors.
Dependentonthemodel,thecompressorshave3or4electricmotordrivencompressor
modules,enclosedinasoundinsulatingcanopy.Thefrontdoorpanelhousesthecontroller
withgraphicaldisplayandtheemergencystopbutton.Anelectriccabinetwiththeelectric
components is located behind the front panel.
Thecompressorscanbedeliveredwithorwithoutintegratedrefrigerantairdryer.
QOFisthetypedesignationofthecompressorvariantwithoutintegrateddryer.OnQOF,
thecompressedairofeachcompressormoduleowsviaanindividualcheckvalvetoa
common air cooler and leaves the compressor via the air outlet valve.
QOFwithdryercompressorsareQOFcompressorsprovidedwitharefrigerantairdryer,
integratedinthebodywork.
Thedryerremovesmoisturefromthecompressedairbycoolingtheairtonearfreezing
point and automatically draining the condensate.
QOF 30 with dryer, front view

Section II - Description
6 Quincy Compressor
1Electroniccontroller S3 Emergencystopbutton
2 Hour meter
QOF 30 with dryer, rear view
1 Compressor module 3Refrigerant dryer
2Aircooler 4 Compressed air outlet valve
Compressor element operating principle
Eachcompressorelementconsistsofaxedscrollshapedhousingandascrollshaped
rotor.Airentersthecompressorelementthroughinletopening(1).Oncetheairisdrawn
in,theorbitingscroll(4)sealstheinletopeningandforcestheairintoacontinuously
decreasingspace.Asscroll(4)keepsorbiting,thisprocessofcompressionisconstantly
repeated,resultingindischargingofoilfreecompressedairthroughoutletopening(3).

Section II - Description
Quincy Compressor7
Compressor element, typical
1Airinlet 3 Airoutlet
2Fixedscroll 4 Orbiting scroll
Compressor module
TheQOF20hasfour3.7kWmodules,whiletheQOF22andtheQOF30respectively
havethreeorfour5.5kWmodules.
3.7 kW compressor module
5.5 kW compressor module
1Airlter 4 Compressor element air outlet
2 Motor 5Safety valve
3Compressor element 6 Temperaturesensor

Section II - Description
8 Quincy Compressor
Flow diagram
Flow diagram

Section II - Description
Quincy Compressor9
Textonimage
(1) Compressor module 1 (10) Air
(2) Compressor module 2 (11) Drain
(3) Compressormodule3 (12) Mechanicallink
(4) Compressormodule4 (13) Electricalsignal
(5) Tocubicle (14) Electricenergy
(6) Refrigerant dryer (units with dryer) (15) Enclosure
(7) Waterseparator(unitswithoutdryer) (16) Local mounting
(8) Outlet (17) On control cabinet
(9) Ambienttemperaturesensor
Air ow
Airisdrawnthroughairlter(100)andiscompressedbythecompressorelement(102)
ofeachcompressormodule.Thecompressedairisdischargedviathecheckvalve(104)
and a common air cooler (112).
On compressors without integrated dryer, the compressed air passes a water separator
(111) and flows to the outlet valve (121).
On standard compressors with an integrated air dryer, the compressed air flows through
acommonrefrigerantdryer(300)beforereachingtheoutletvalve(121).Fordetailson
the operation of the dryer, see section Refrigerant dryer.
Cooling
Eachcompressorelement(102)iscooledbyaradialfan(124),mountedonthedrive
shaftofthecompressorelement.Thecoolingairisblownoverthecompressorelement
via a duct.
Aseparateelectricfan(130)providescoolingairforthecommonaircooler(112).
Condensate management
Thewaterseparator(111)oncompressorswithoutintegrateddryerhasanautomatic
condensate outlet and a manual drain valve.
On compressors with integrated dryer, the dryer is equipped with a water trap with an
automatic condensate outlet and a manual drain valve.
Condensate drain connections (typical)

Section II - Description
10 Quincy Compressor
1Automaticcondensatedrainoutlet 3 Manual condensate drain valve
2Ambienttemperaturesensor
Regulating system
Thecompressorisprovidedwithanelectroniccontrollermodule.
Thecontrollerperformsfollowingfunctions:
•Monitoringthepressure
•Protectingthecompressor
•Monitoringcomponentssubjecttoservice
•Automaticrestartaftervoltagefailure
Formoredetails,pleaseconsultthesectionsonthecontrollerfurtherinthisbook.
Electrical system
Cubicle layout
Electrical cabinet QOF 20, QOF 22 and QOF 30, typical
K21,K22,... Contactor 1X0,4X3,... Terminals
Q21,Q22,... Circuitbreaker T1,T4,... Transformer
F1,F2,... Fuses

Section II - Description
Quincy Compressor 11
Electric diagram
NOTICE!
• The electrical installation must correspond to the applicable codes.
• The mains supply and earthing lines must be of suitable size. See section Electric
cable size and fuses.
• The installation must be earthed and protected by fuses in each phase.
• An isolating switch must be installed near the compressor. Make sure that this switch
is open to isolate the compressor from the mains before carrying out any connection.
Thecompleteelectricaldiagramisavailableintheelectriccubicleofthecompressor.For
connectionofthesupplywires,pleaseseesectionElectricalconnections.
Temperature protection
Thecompressorisequippedwithanambienttemperaturesensor.Thesensorcreatesa
warningmessageonthecontrolleriftheambienttemperaturerisesabove40°C(104°F).
Iftheambienttemperaturereaches45°C(113°F),thecompressorisstopped.
Condensate drain connections
1Automaticcondensatedrainoutlet 3 Manual condensate drain valve
2Ambienttemperaturesensor
EachcompressorelementisprotectedbyaPT1000sensor(6)intheoutletpipe.The
sensor is connected to the electronic regulator.
Whenthemaximumtemperatureisexceeded,thecompressorelementisstopped
during2minutesbeforeitcanrestart.Ifthishappens2timeswithinatimespanof2
hours,theelementwillbestoppedduring10minutes.
Ifthecompressorelementstopsathirdtimewithinthe2hourstimespan,theelement
will be shut down and must be reset manually.

Section II - Description
12 Quincy Compressor
3.7 kW compressor module
5.5 kW compressor module
CAUTION!
When the compressor is stopped due to overheating, the compressor will not restart
until the failure is acknowledged and the compressor is restarted manually. See also
sections Shutdown warning and Shutdown.
Air dryer
Flow diagram

Section II - Description
Quincy Compressor 13
Compressed air circuit
Compressed air enters heat exchanger (1) and is cooled by the outgoing, cold, dried air.
Waterintheincomingairstartstocondense.Theairthenowsthroughheatexchanger/
evaporator (2) where the refrigerant evaporates, causing the air to be cooled further to
close to the evaporating temperature of the refrigerant. More
waterintheaircondenses.Thecoldairthenowsthroughseparator(3)whereallthe
condensate is separated from the air.
Thecold,driedairowsthroughheatexchanger(1)whereitiswarmedupbythe
incoming air.
Thecondensateisautomaticallydrainedbytheelectroniccondensatedrain(9).
Refrigerant circuit
Compressor(4)delivershot,high-pressurerefrigerantgaswhichowsthroughcondenser
(6) where most of the refrigerant condenses.
Theliquidowsthroughliquidrefrigerantdryer/lter(7)tocapillarytube(8).The
refrigerant leaves the capillary tube at evaporating pressure.
Therefrigerantentersevaporator(2)whereitwithdrawsheatfromthecompressedairby
furtherevaporationatconstantpressure.Theheatedrefrigerantleavestheevaporator
andissuckedinbythecompressor.
Thecondenser(6)pressuremustbekeptasconstantaspossibletoobtainstable
operation.Fancontrolswitch(P)thereforestopsandstartsthecondensercoolingfan.If,
underpartialornoload,theevaporator(2)pressuredropstoapproximately2.25bar(e)
(32.63psig),thehotgasbypassvalve(5)opensandhot,high-pressuregasisfedtothe
evaporator circuit to prevent the evaporator pressure from dropping any further.
Automatic drain
Thedryersareequippedwithanelectroniccondensatedrain(EWD).Thecondensate
fromthecondensatetrapaccumulatesinacollector.Whenthecondensatereachesa
certain level, it is discharged through the drain outlet (1).
Thecondensatecanalsobedrainedbypressingthetestbutton(2).
Thedrainltercanbecleanedbyopeningthemanualdrainvalve(3),seesection
Preventivemaintenanceschedule.

Section III - Controller
14 Quincy Compressor
• General
• Control panel
• Icons used
• Main screen
• Calling up menus
• Shutdown warning
• Shutdown
• Inputs menu
• Outputs menu
• Counters
• Control mode selection
• Service menu
• Setpoint menu
• Event history menu
• General settings menu
• Info menu
• Week timer menu
• Test menu
• User password menu
• Web server
• Programmable settings
General
Control panel
Introduction
Thecontrollerhasfollowingfunctions:
•Controllingthecompressor
•Protectingthecompressor
•Monitoringcomponentssubjecttoservice
•Automaticrestartaftervoltagefailure(madeinactive)
Automatic control of the compressor operation
Thecontrollermaintainsthenetpressurebetweenprogrammablelimitsbyautomatically
startingandstoppingoneormorecompressormodules.Anumberofprogrammable
settings, e.g. the starting and stopping pressures and the maximum allowed motor

Section III - Controller
Quincy Compressor 15
startingfrequencyandseveralotherparametersareherebytakenintoaccount.
Thecontrollerstopsthecompressorwheneverpossibletoreducethepower
consumption and restarts it automatically when the net pressure decreases.
CAUTION!
A number of time based automatic start/stop commands can be programmed. Take
into account that a start command will be executed (if programmed and activated),
even after manually stopping the compressor.
Protecting the compressor
Shutdown
Severalsensorsareprovidedonthecompressor.Ifoneofthemeasuredsignalsexceeds
theprogrammedshutdownlevel,thecompressorwillbestopped.Thiswillbeindicated
ondisplay(1)andgeneralalarmLED(2)willblink.
Remedythetroubleandresetthemessage.SeealsosectionInputsmenu.
CAUTION!
Before remedying, consult the applicable safety precautions.
Shutdown warning / shutdown
Ifthecompressorelementtemperatureexceedsthefactorysetwarninglevel,the
compressor element will be stopped for a short time and a warning will appear on the
controllerdisplay(1)andthegeneralalarmLED(2)willlightup.
Incaseofrepetitivestopsduetoatoohightemperature,amanualresetwillbe
necessary before restarting the compressor.
Thecompressorwillalsobestoppedwhenthemotorisoverloaded.
Awarningmessagewillalsoappearif,oncompressorswithintegrateddryer,thedew
point temperature is too high in relation to the ambient temperature.
Service warning
Anumberofserviceoperationsaregrouped(calledServicePlans).EachServicePlan
hasaprogrammedtimeinterval.Ifatimeintervalisexceeded,amessagewillappearon
display (1) to warn the operator to carry out the service actions belonging to that Service
Plan.
Therunninghourswillberecalculatedwithrespecttotheambienttemperature.This
algorithmisactivatedwhenthecompressorisoperatedabove30°C(86°F)ambient.
Automatic restart after voltage failure
Thecontrollerhasabuilt-infunctiontoautomaticallyrestartthecompressorwhenthe
voltageisrestoredaftervoltagefailure.Forcompressorsleavingthefactory,thisfunction
ismadeinactive.Ifdesired,thefunctioncanbeactivated.
Consult your supplier if a change is considered (password protected function).

Section III - Controller
16 Quincy Compressor
CAUTION!
Ifthefunctionisactivatedandprovidedtheregulatorwasintheautomaticoperation
mode, the compressor will automatically restart if the supply voltage to the module
is restored within the programmed time interval.
Control panel
Parts and functions
Reference Designation Function
1Display Shows the compressor operating condition and a
number of icons to navigate through the menu.
2Pictograph Automaticoperation
3 Pictograph Generalalarm
4 AlarmLED Flashesincaseofashutdown,islitincaseofawarn-
ing condition.
5 Pictograph Service
6ServiceLED Lights up if service is needed
7AutomaticoperationLED Indicatesthattheregulatorisautomaticallycontrol-
ling the compressor.
Thecompressorisstoppedandrestarted
8 VoltageonLED Indicatesthatthevoltageisswitchedon.
9 Pictograph Voltage
10 Enterkey Usethisbuttontoconrmthelastaction.
11 Escapekey Usethisbuttontogotopreviousscreenortoend
the current action.
12 Scrollkeys Keystoscrollthroughthemenu.
13 Stop button Buttontostopthecompressor.LED(7)goesout.
14 Start button Buttontostartthecompressor.LED(7)lightsupindi-
cating that the controller is operative.