Quincy Compressor QOF 2 User manual

OIL-FREESCROLL
COMPRESSORS
QOF2,QOF3,QOF5,QOF7.5
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.2920 7150 80
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
RoyalBlueWarranty ........................................................................................................ 4-5
Section II - Description
Introduction.........................................................................................................................6
Flowdiagram.....................................................................................................................10
Refrigerant dryer................................................................................................................12
Section III - Installation
Dimensiondrawings..........................................................................................................14
Installationproposal ..........................................................................................................14
Electricalconnections........................................................................................................16
Pictographs........................................................................................................................17
Section IV - Operation
Initialstart-up.....................................................................................................................19
Starting ..............................................................................................................................20
Duringoperation ...............................................................................................................21
Stopping............................................................................................................................21
Takingoutofoperation .....................................................................................................22
Section V - Preventive maintenance
Preventivemaintenanceschedule.....................................................................................23
Servicekits.........................................................................................................................23
Disposalofusedmaterial ..................................................................................................25
Section VI - Adjustments and servicing procedures
Pressureswitch ..................................................................................................................26
Airfilter..............................................................................................................................28
Aircooler...........................................................................................................................28
Drivemotor .......................................................................................................................28
Safety valve .......................................................................................................................28
Beltreplacement ...............................................................................................................29
Temperatureprotection.....................................................................................................31
Cleaning the compressor element ....................................................................................31
Replacement of the outlet pipe ........................................................................................33
Refrigerant dryer maintenance..........................................................................................34
Section VII - Problem solving ...................................................................35-37
Section VIII - Technical data
Readings on control panel ................................................................................................38
Electriccablesize ..............................................................................................................38
Settings for overload relay and fuses ................................................................................39
Temperatureprotectionandsafetyvalvesettings ............................................................40
Reference conditions and limitations ................................................................................41
Compressor data...............................................................................................................41

Table of Contents
Quincy Compressor
Section IX - Instructions for use ...................................................................43
Section X - Guidelines for inspection ...........................................................44
Section XI - Pressure equipment directives ..................................................45
Section XII - Declaration of conformity .........................................................46

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
• Introduction
• Flow diagram
• Refrigerant dryer
Introduction
General
QOF-2,QOF-3,QOF-5,QOF-7.5arestationary,singlestage,oil-freecompressors,drivenby
an electric motor.
Thecompressorsarecontrolledbyapressureswitch.
Thecompressorsareenclosedinasounddampeningenclosureandareaircooled.
Availableversions:
•Thebasicversion(QOF)comprisesthemotor,thecompressorelement,anaircooled
aftercooler and the regulation and protection components.
•TheQOFwithdryerisaQOF,completedwithanintegratedrefrigerantdryer.
Thebasicversion(referredtoastheoormountedversion(FM))doesnotincludeanair
receiver.Anairreceiverisavailableasoption.
Availableoptions:
•Airreceiverof30l(7.93USgal),270l(71.3USgal)or500l(132USgal).The30l
receiverconsistsofamodulewiththree10l(2.64USgal)receivers.The30lreceiver
option includes an electronic drain.
•Receivermountedversion(270land500l):electronicdrainontheairreceiver
•Floormountedcompressorswithoutrefrigerantdryer:waterseparatorontheoutlet
•Prefiltermatsontheairinlet
•Phasesequencerelay(on3-phaseunits)
QOF
Thecontrolpanelcomprisesapressuregauge,anhourmeterandastartbutton.Thecompressor
iscontrolledbyapressureswitch(PS).
Theelectriccomponentsarelocatedinthecubiclebehindthefrontpaneldoor.
Acheckvalve(CV)preventslossofcompressedairwhenthecompressorisstopped.A
temperatureswitchandasafetyvalve(SV)protectthecompressorelementagainstoverheating
andtoohighpressurerespectively.Thecompressedairiscooledbyanaircooler(Ca).
Singlephaseunitsareequippedwithaventvalveforeasystarting.

Section II - Description
6 Quincy Compressor
QOF 5 floor mounted - general view
QOF 5 with integrated air receivers
(3 x 10 l)- general view

Section II - Description
Quincy Compressor7
Gp Pressuregauge Q1/H1 On/off switch with lamp
P1 Hour meter AV Outlet valve
RAirreceivers(3x10l) Dm Manual drain valve
Da Automaticdrainoutlet
QOF 5 floor mounted - details
AF Inletairlter AV Outlet valve
Ca Aircooler E Compressor element
M Motor PS Pressureswitch
SV Safety valve TSHH Temperatureswitch
CV Checkvalve
QOF with dryer
TheQOFwithdryerconsistsofanQOF,completedwithanintegratedrefrigerantdryer.
Thecontrolpanelcomprisesapressuregauge,anhourmeter,astartbuttonanda
temperaturegaugeindicatingthedewpoint.Thecompressoriscontrolledbyapressure
switch(PS).
Theelectriccomponentsarelocatedinthecubiclebehindthefrontpaneldoor.
Acheckvalve(CV)preventslossofcompressedairwhenthecompressorisstopped.
Atemperatureswitchandasafetyvalve(SV)protectthecompressorelementagainst
overheatingandtoohighpressurerespectively.Thecompressedairiscooledbyanair
cooler (Ca) before it enters the dryer.
Singlephaseunitsareequippedwithaventvalveforeasystarting.

Section II - Description
8 Quincy Compressor
QOF 5 with dryer on a 270 l receiver - general view
Gp Pressuregauge Q1/H1 On/off switch with lamp
P1 Hour meter AV Outlet valve
Dm Manual drain valve Da Automaticdrainoutlet
Gd Dewpointgauge ID Refrigerant dryer
QOF 7.5 with dryer - details

Section II - Description
Quincy Compressor9
AF Inletairlter AV Outlet valve
Ca Aircooler E Compressor element
M Motor CV Checkvalve
SV Safety valve Dm Manual drain valve
ID Refrigerant dryer TSHH Temperatureswitch
Flow diagram
Flow diagram

Section II - Description
10 Quincy Compressor
(1) Compressor module (5) Unitswithdryeronairreceiver
(2) Unitswithoutdryerandairreceiver (6) Refrigerant dryer
(3) Unitswithdryer,withoutreceiver (7) Tocubicle
(4) Unitswithoutdryeronairreceiver (8) Compressed air outlet
Air ow
Airisdrawnthroughairlter(100)andiscompressedbythecompressorelement(101).
Next,thecompressedairowsthroughthecheckvalve(105)andtheaircooler(106).
Singlephaseunitsareequippedwithasolenoidvalve(109)andasilencer(110)foreasy
starting at low voltage.
Onoormountedversionswithoutrefrigerantdryer,theairowsthendirectlytothe
outletvalve(121).Onreceivermountedunits,thecompressedairowsintotheair
receiver(120),ontowhichtheoutletvalveAV(121)istted.
Oncompressorswithrefrigerantdryer,thecompressedairowstotherefrigerantdryer
(ID),wherethewatervaporcondensatesbycoolingdown.Thewaterisremovedviathe
integratedwaterseparator(201c)andtheelectronicdrain(210).
FordetailsontheoperationoftheIDdryer,seesectionRefrigerantdryer.
Cooling
Thecompressorelement(101)iscooledbyanintegratedradialfan(102).Anaxialfan
(107)ttedonthemotorshaftprovidescoolingairfortheaircooler(106).
Oncompressorswithintegratedrefrigerantdryer,aseparatefan(204)deliverscoolingair
for the dryer.
Condensate management
Floormountedcompressorswithoutrefrigerantdryerhavenodrain.Awaterseparatoris
available as option.
Thedryerofcompressorsequippedwitharefrigerantdryerhasanintegratedwater
separator(201c)andanelectronicwaterdrain(210).Thewaterseparatorhasamanual
drainvalve(211)andaconnectionfortheautomaticdrain.Formoredetails,consult
section Refrigerant dryer.
Thereceiverofreceivermountedcompressorshasamanualdrainvalve(122)atthe
bottom.Anelectronic

Section II - Description
Quincy Compressor 11
Regulating system and protection
Thecompressorisstartedandstoppedautomaticallybyapressureswitch(PS).A
pressuregauge(PI)indicatesthepressure.Atemperatureswitch(TSHH)protectsthe
compressor element from too high temperatures.
Asafetyvalve(108)protectsthecompressorelementagainsttoohighpressure.
Refrigerant dryer
Operation
Therefrigerantdryerremovesmoisturefromthecompressedairbycoolingitdownto
nearfreezingtemperature.Thewaterisremovedviaanautomaticdrain.
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theevaporator
heat exchanger (2) where the refrigerant evaporates, causing the compressed 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waterseparator(3),wherethe
condensateisseparatedfromtheair.Thecondensateisautomaticallydrainedbythe
electroniccondensatedrain(9).
Thecold,driedairowsthroughheatexchanger(1)whereitiswarmedupbythe
incoming air.

Section II - Description
12 Quincy Compressor
Refrigerant circuit
Compressor(4)delivershot,high-pressurerefrigerantgaswhichowsthroughcondenser
(6)wheremostoftherefrigerantcondenses.
Next,theliquidrefrigerantowsthrough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again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.
Electronic condensate drain
Thedryerisequippedwithanelectroniccondensatedrain.Thecondensate,separated
by the condensate trap, accumulates inside the drain. Once 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
reventive Maintenance schedule.

Section III - Installation
Quincy Compressor 13
• Dimension drawings
• Installation proposal
• Electrical connections
• Pictographs
Dimension drawings
ThedimensiondrawingsareavailableinpdfformatontheCDRom,suppliedwiththe
compressor.
Installation proposal

Section III - Installation
14 Quincy Compressor
1Dryerservicepanel 5 Condensate drain
2 Service panel 6Manual drain
3Supply cable 7Automaticdrain
4Minimum area to be reserved for ser-
vicing purposes
Recommendations
1.Installthecompressoronalevelhorizontalindustrialoor,suitablefortakingthe
weightofthecompressor.Thelocationmustbefrost-freeandpreferablylowdust
location.Thecompressorunitmustbeinstalledonaleveloor.
2.Deliverypipe.Thepressuredropinthedeliverypipecanbecalculatedfrom:
Δp=(Lx450xQC
1.85) / (d5xP),with
d = inner diameter of the pipe in mm
Δp=pressuredropinbar(recommendedmaximum:0.1bar(1.5psi))
L = length of the pipe in m
P=absolutepressureatthecompressoroutletinbar
Qc = free air delivery of the compressor in l/s
3.Ventilation:theinletgridsandventilationfanshouldbeinstalledinsuchawaythat
anyrecirculationofcoolingairtothecompressorisavoided.Themaximumair
velocitythroughthegridsis5m/s(16.5ft/s).Themaximumallowablepressure
dropoverthecoolingairductsis30Pa(0.12inwc).Themaximumairtemperature
atthecompressorintakeopeningis40˚C(104˚F).
Take care that the temperature of the ambient air and the cooling air may never be
lower than 0 °C (32 °F) to avoid freezing of condensate.
Therequiredventilationcapacitytolimitthecompressorroomtemperaturecanbe
calculatedfrom:
•QV=1.06N/Δt for compressors without integrated dryer.
•QV=(1.06N+0.2)/Δt for compressors with integrated dryer.
with
QV=requiredventilationcapacityinm3/s
N=shaftinputofthecompressorinkW
Δt = temperature increase in the compressor room in °C
4.Airreceiver:anoptionalairreceivercanbenecessarytolimitthecyclefrequency.
Recommendedmaximumis20startsperhour.
5.Optional filters can be installed in the pressure line downstream the air outlet valve,
e.g.:
•ADD+filterforgeneralpurposefiltration.Thefiltertrapssolidparticlesdownto1
micron.
•APD+filterforfiltrationdownto0.01micron.APDfiltermustalwaysbeinstalled
downstreamaDDlter.
6.Controlcubiclewithmonitoringpanel.
7.Compressoranddryercoolingairoutlet

Section III - Installation
Quincy Compressor 15
8.Compressorcoolingairinlet
9.Refrigerantdryercoolingairinlet
10.Connectcondensatedrainoutlettoasewer.Itisrecommendedtoprovidea
funneltoallowvisualinspectionofthecondensateow.Ifthecondensatepiping
hasbeenledoutsidethecompressorroomwhereitmaybeexposedtofreezing
temperatures,thepipingmustbeinsulated.Thecondensatedrainpipefromthe
compressor to the sewer must not dip into the water of the sewer.
11.Allpipingtobeconnectedfreeofstress.
Electrical connections
Attention
WARNING!
The electrical installation must correspond to the applicable codes. The mains supply
and earthing lines must be of suitable size.
The installation must be earthed and protected by fuses in each phase. Install an
isolating switch near the compressor.
Make sure that this switch is open to isolate the compressor from the mains before
carrying out any connection.
Supply cable
ConsultsectionCablesizeforthesectionofthepowersupplycable.
Anelectriccableisprovidedontheunit.Fitasuitableplugonthecable.
Pluginthecable.
Three voltage units
Thecompressorsleavethefactorywiredfor230V.Ifthecompressoristobeusedon
460V,rewirethemotorasfollows:
1.Takeallnecessaryprecautions.
2.Changetheconnectioninthemotorterminalboxaccordingfollowinginstructions:
•ForQOF3andQOF5:

Section III - Installation
16 Quincy Compressor
•ForQOF7.5:
3.ChangealsothevoltageconnectiononauxiliarytransformerT1.
4.Replacethefuses.
5.Adjusttheoverloadrelaysettings(seesectionSettingsofoverloadrelayandfuses.
Pictographs
Pictographs
Reference Designation
1Warning:thecompressorstartsandstopsautomatically.Donotperformservice
whenpressurizedandwhenthevoltageison.
Readtheinstructionbook,switchoffthepoweranddepressurizethecompressor
before maintenance or repair.
2Warning:whenthevoltageison,theunitcanstartandstopautomatically.
3 Warning:rotatingfan.