CommScope MR050B Series User manual

MR050B SERIES
DEHYDRATOR
USER MANUAL
Bulletin AE01B-A0553-001 Rev: N
© 2009 - 2012 CommScope, Inc. All rights reserved (12/12)

MR050B SERIES DEHYDRATOR USER MANUAL
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Section 1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Introduction... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .3
1.2 Description ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .3
1.3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.4 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Figure 1 Summary Alarm Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 2 Discrete Alarm Terminal ... ... ... ... ... ... ... ... ... ... ... ... .4
Figure 3 Control Board ... ... ... ... ... ... ... ... ... ... ... ... ... ... .5
1.5 SpecicationsMR050BDehydrator.. ... ... ... ... ... ... ... ... ... ... ... .5
Section 2 Installation .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..6
2.1 Unpacking and Inspection .. ... ... ... ... ... ... ... ... ... ... ... ... ... .6
2.2 Controls and Displays.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... .6
2.2.1 Event Log Codes .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .6
2.3 InstallingtheDehydrator ... ... ... ... ... ... ... ... ... ... ... ... ... ... .6
2.3.1 19”RackMountingorsetonshelf... ... ... ... ... ... ... ... ... ... ... ... .6
2.4 Power Connections ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .6
2.4.2 SafetyGround ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .7
2.4.3 TesttheDehydrator ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .7
2.5 ConnectingtheAlarmOutputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.6 ConnectingDehydratortotheTransmissionLine.. ... ... ... ... ... ... ... ... .7
2.7 PurgingtheTransmissionLine .. ... ... ... ... ... ... ... ... ... ... ... ... .7
Section 3 Maintenance ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..8
3.0 Maintenance .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .8
3.1 PreventiveMaintenance ... ... ... ... ... ... ... ... ... ... ... ... ... ... .8
3.2 Desiccant Canister Replacement ... ... ... ... ... ... ... ... ... ... ... ... .8
3.3 Annual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3.4 Checktheelectricalconnections. ... ... ... ... ... ... ... ... ... ... ... ... .8
3.5 Checkthedutycycle. .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... .8
3.6 Parts Replacement ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .8
3.7 UnitShutdownandRemoval ... ... ... ... ... ... ... ... ... ... ... ... ... .8
3.8 Service Restoration ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .9
Section 4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Problem/Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
 Figure4MR050B-31015WiringDiagram ... ... ... ... ... ... ... ... ... ...11
 Figure5MR050B-31215WiringDiagram ... ... ... ... ... ... ... ... ... ...12
Figure 6 Pneumatic Diagram ... ... ... ... ... ... ... ... ... ... ... ... ...13
Section 5 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
 DesiccantKitMR050B-KIT-DSCNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
 CompressorKitMR050B-KIT-CPRSR... ... ... ... ... ... ... ... ... ... ...14
Section 6 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.0 Introduction... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...14
6.1 InCaseofTrouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2 Initial Steps by CommScope ... ... ... ... ... ... ... ... ... ... ... ... ...15
6.3 Repair Center Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4 RoHS Inquiries ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...15
Table Contents

MR050B SERIES DEHYDRATOR USER MANUAL
3
1.1 Introduction
Thismanualcontainstheinformationyouneed
toinstall,operate,andmaintainyourMR050B
Seriesdehydrator.Pleasetakethetimetoread
thismanualbeforeattemptingtooperateor
servicetheunit.
This appliance is not intended for access by
the general public.
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities,
or lack of experience and knowledge,
unless they have been given supervision or
instruction concerning use of the appliance
by a person responsible for their safety.
1.2 Description
MR050BSeriesdehydratorsprovidedryairfor
pressurizing small (up to 280 liters, or 10 cubic
feet,involume)antennaandtransmissionline
systems.Thedehydratorsproduce-40ºC(-40ºF)
dewpointdryairatanominalrateof1.4liters
(0.05cubicfeet)perminuteuptoatotalof8495
Iiters(300cubicfeet)onasingledesiccant
canister.
Eachdehydratorconsistsofanelectrically-
driven air compressor, a desiccant canister, an
automatic transmission line pressure sensing
system,andalarmoutputshousedinarigid
metalchassis.Itisdesignedtomountdirectlyto
therack,directlyonawall,orasafree-standing
unit.Thefrontpanelfeaturesacontrolinterface
withdisplayforalarmsandpressure.Foreasy
serviceability, power connections, alarm output
connections,andthedesiccantcanisterare
easilyaccessiblefromthefrontoftheunit.
TheMR050Bmaintainstransmissionline
pressures between 2.0 and 3.4 kPa (0.3 and
0.5psig).Itisintendedforusewithhigh
performancemicrowaveantennasandearth
station antennas.
1.3 Operation
MR050Bseriesdehydratorsincludea
compressor,colorindicatingdesiccant,highand
low-pressure sensors, and a low-pressure alarm
sensor.
Whensystempressurefallstoapresetlow
limit,thelow-pressuresensoractivatesthe
compressor.Airischanneledthrougha
desiccantcanister,wheremoistureisadsorbed.
Theairexitsthedryingcanisterat-40°C(-40°F)
dewpoint.Itisthenchanneleddirectlytoan
internal4-portmanifold
.
Whensystempressurereachesapresethigh
limit,thehigh-pressuresensorshutsoffthe
compressor.Acheckvalvepreventssystemdry
airfromretreatingbackthroughthecompressor.
Ifsystempressurefallssignicantlybelowthe
low-pressuretriggerpoint,thelow-pressure
alarm sensor will activate an alarm contact.
Thisalarmisanindicationofasignicant
systemleakoradehydratorfailure.
1.4 Alarms
TheMR050BoffersLowPressureandExcess
Runalarmsasastandardfeature.Indicated
onasummaryalarmconnection.Thediscrete
alarmoptionincludesLowPressure,Excess
RunandPowerFailalarmswhichreport
throughdiscretecontacts.Alarmconditionsare
indicatedonthedisplay.ThealarmsareForm
Cdrycontactsandhaveconnectionoptionsfor
Normally Open (NO) or Normally Closed (NC)
conguration.
Theexternalalarmmonitoringsystem(supplied
byothers)isconnectedtotheterminalstrip
locatedonthefrontoftheunit.Asmall
slottedscrewdriverisnecessarytomakethe
connections.
RefertoFigure1and2forcorrectlocationsand
colorsofthewiresonthealarmterminalstrip.
Section 1
General Information

MR050B SERIES DEHYDRATOR USER MANUAL
4
Alarm Denitions:
Summary: ActivateswhentheHighPressure
(only indicated on summary
contacts),ExcessRun,and/orLow
Pressurealarmsaretriggered.The
summary alarm does not report
Power Fail.
Power Fail: Activatesopenwhenpoweris
removedfromthedehydrator.This
includesturningthepoweroffatthe
switch.
Excess Run: Factory strapped run time set in
accordancewiththenormalrun
timeforthedehydratorapplication.
Selectable times are 1, 10, 30, 120
and240minutes,withthe10minute
selectionusedontheMR050Bas
thedefaultsetting.
Low Pressure: Ifsystempressurefallsbelowthe
low-pressuretriggerpoint(factory
setontheMR050B),thelow-
pressure alarm sensor will activate
analarmcontact.Thisalarmisan
indicationofasignicantsystem
leakoradehydratorfailure.
Figure 1 Summary Alarm Terminal
Note: All of the alarms clear and reset automatically,
but can be manually reset in the display menus.
However, if the alarm condition still exists, the alarm
will return immediately after being reset.
WIRE FUNCTION REFERNCE
WIRE
TERMINAL COLOR ALARMFUNCTION
1WHITE EXCESS RUN NO
2TAN EXCESSRUNCOM
3 BLUE EXCESS RUN NC
4BROWN SUMNO
5 PINK SUMCOM
6GREEN SUMNC
7 BLACK POWERFAILNO
8 VIOLET POWERFAILCOM
9 RED POWERFAILNC
10 ORANGE LOWPRESSURENO
11 YELLOW LOWPRESSURECOM
12 GRAY LOWPRESSURENC
WIRE FUNCTION REFERNCE
WIRE
TERMINAL COLOR ALARMFUNCTION
1 BLACK SUMMARYNC
2WHITE SUMMARYCOM
3 RED SUMMARYNO
BLACK
RED
WHITE
WHITE
GREEN
PINK
BROWN
BLUE
TAN
BLACK
VIOLET
RED
ORANGE
YELLOW
GRAY
Figure 2 Discrete Alarm Terminal

MR050B SERIES DEHYDRATOR USER MANUAL
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1.5 Specications MR050B Dehydrator
Cut Out Pressure, kPa (psig) 3.5 (0.5)
Cut In Pressure, kPa (psig) 2 (0.3)
Outputcapacity 85SLPH,1.4SLPM
 (3.0SCFH;0.05SCFM)
 (total,approx.)
OutputDewPoint, -36°C(-33°F)
or better
OperatingTemperature 1°to+40°C
Range (34°to+104°F)
Electrical Input 24/48 Vdc
115/240 Vac, 50/60 Hz
 (withac-to-dcadapter)
Power Consumption 11 watts continuous
Output Connectors 3/8” polytube, compression
Dimensions Height,cm(in) 13.2(5.2)
 Width,cm(in) 43.9(17.3)
 Depth,cm(in) 20.3(8.0)
Netweight,kg(lb) 7.26 (16)
Alarms
PowerFailAlarm lossofinputpower
ExcessRunAlarm 10minutes,factoryset
LowPressureAlarm factoryset
HighPressureAlarm factoryset
Figure 3 Control Board
NOT IN
USE
48 Vac COMP OUTPUT
P7
(MR050B ONLY)
SUM ALARM
P8
(NO/NC)
KEYPAD
J4
DISCRETE ALARMS
P9
115 Vac
COMP
OUTPUT
P4
(MT/PMT SERIES)
Vdc INPUT
P2
(MR050B
ONLY)
LOW PRESSURE
SENSOR
U4
HIGH PRESSURE
SENSOR
U2
USB
P1
SOLENOID
(FILTER DRAIN
MT/PMT SERIES)
P6
AC MAIN
[
[

MR050B SERIES DEHYDRATOR USER MANUAL
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Section 2
Installation
2.1 Unpacking and Inspection
Open Carton
Removethetoppieceoffoampackaging.
Carefullyremovetheinstallationaccessories,
manual,anddehydrator.Checkthedehydrator
forshippingdamagesuchasdentsorloose
parts.
2.2 Controls and Displays
Default password is 1111
Familiarizeyourselfwiththecontrolsand
displayspriortoinstallingortestingthe
dehydrator.
Keypad Controls:
Advancesdisplay(scrollsahead)tothe
nextdisplayorprogrammodewithout
changingthevaluesinthemicroprocessor
memory.
Numerically increase displayed settings in
displaywindow.Whendepressedlonger
than1/2secondscrollingwilloccurata
fasterrate.
Numerically decrease displayed settings
indisplaywindow.Whendepressed
longerthan1/2secondscrollingwilloccur
atafasterrate.
Entersintothemicroprocessormemory
thevaluesdisplayedinthewindowand
advancesdisplay(scrollsahead)tothe
nextprogramordisplaymode.
Usedtoallowtheuserquickaccesstothe
system event log.
2.3 Installing the Dehydrator
2.3.1 19” Rack Mounting or set on shelf
MR050Bcanbemountedinstandard19inch
equipmentrack,mountedtoawallwithear’sor
placedonanoptionalshelf.
2.4 Power Connections
Conrmyourdehydratorelectricalinputmatches
theavailablepower.
Ensureanelectricalsafetygroundisinstalledon
thegroundstudlocatedadjacenttothepower
input connector. (It is intended to be customer
installedintheeldtoyourhalogrounding
system.)
115 Vav 60 Hz/240 Vac 50 Hz
24 Vdc/48 Vdc
2.4.1 AC Power
AC units can be connected into a standard 15
Amppowerreceptacleofthepropervoltagevia
thepowersupply.Makesurethepowercircuit
is properly grounded. Two power cords are
supplied, one 115 Vac American and one 240
Vac International.
CAUTION:
This unit is designed for connection to a single
phase power source. Connection to a 3 phase
power source will cause signicant damage to
internal components.
CAUTION:
Proper electrical connection is required. It is
suggested a licensed electrician be contracted to
connect the AC wiring to the unit, if it is connected
directly to the mains. Failure to properly connect the
power wires could result in a dangerous electrical
shock hazard.
2.2.1 Event Log Codes
EV= 0 Event = Power Up
EV=1Event=HighHumidityAlarm
EV=2Event=ExcessiveRunTimeAlarm
EV= 3 Event = Low Pressure Alarm
EV=4Event=HighPressureAlarm
EV= 5 Event = Compressor Fault
EV= 6 Event = Log Cleared
EV= 7 Event = Powering Down
EV=8Event=CompressorLifetimeEepromFail

MR050B SERIES DEHYDRATOR USER MANUAL
7
Note:
If the transmission lines have not been purged,
continue with section 2.7. Otherwise proceed to
section 3.
2.7 Purging the Transmission Line
Airinthetransmissionlinesystemmustbe
replacedwithdryairtoensuresatisfactory
operationofthetransmittedsignal.
1. Determinethetotalsystemvolume.
2. Dividethesystemvolumebytheowrateof
thedehydrator(3.0SCFH)todeterminethe
numberofhoursneededforthepurgecycle.
3. Openthefarendofthetransmissionline.
4. Operatethedehydratorforthreepurge
cycles.
Ifitisnotpossibletoopenthefarendofthe
transmissionline,followthesesteps:
1. Connectthedehydratortothetransmission
lineandpressurizethesystem.Thesystem
pressureshouldreach0.5psig.
2. Wait15minuteswhiletheairabsorbs
moistureinthesystem,thendisconnectthe
dehydratorfromthetransmissionlineand
allowtheairtovent.
3. Repeat steps 1 and 2 twelve times to purge
thesystem.
2.4.2 Safety Ground
Ensureanelectricalsafetygroundisinstalledon
thegroundstudlocatedadjacenttothepower
input connector. (It is intended to be customer
installedintheeldtoyourhalogrounding
system.)
2.4.3 Test the Dehydrator
TurnthedehydratorONandchecktheoutput
portontherearoftheunittomakesureairis
owing.
2.5 Connecting the Alarm Outputs
Toconnectthealarms,locatethealarmoutput
terminalblockonthefrontoftheunit.
(Seesection1.4foralarmlocation)
2.6 Connecting Dehydrator to the Transmission
Line
CAUTION:
Check the antenna and transmission line system
pressure rating before connecting the dehydrator to
the system.
Insertoneendofthe3/8”polytubefeedline
tubingintothecompressionttingononeofthe
dehydratoroutputports.Tightensecurelywith
a9/16”wrench.Becarefulnottoovertighten.
Connecttheotherendofthepolytubetothe
transmission line.
Whitestripewire:+

MR050B SERIES DEHYDRATOR USER MANUAL
8
Section 3
Maintenance
3.0 Maintenance
TheMR050BDehydratorrequiresrelatively
littlemaintenancetoensuresatisfactory
operationoverlongperiodsoftime.Thissection
outlinestherecommendedannualpreventive
maintenancefortheunitandthesuggested
overhaulforevery6000hoursofcompressor
operation.
3.1 Preventive Maintenance
TheannualmaintenanceofaMR050Bconsists
ofapreventativemaintenanceinspectionofthe
dehydrator.
Thesetaskscaneasilybeperformedintheeld
withtheunitconnectedtothetransmissionline
system.
Inadditiontotheannualinspection,acomplete
overhaulisrecommendedevery6000hoursor
sooneriflocalconditionswarrant.
3.2 Desiccant Canister Replacement
Asthedesiccantbecomessaturatedovertime,it
willchangefrombluetopinkororangetogreen.
Whenthedesiccantisexhausted,therewillbea
degradationofperformance.Inordertoreplace
thedesiccant,simplyturntheunitoff,disconnect
thedesiccantcanisterfromthepneumaticlines,
andreplacetheentirecanister.
3.3 Annual Inspection
Inspectionincludescheckingforlooseor
damagedhoses,ttings,andelectrical
connections.Removethedesiccantcanisterand
verifythattherearenoleaksinthepneumatic
lines.
Warning:
Electrical Hazard! Unplug power cord before
servicing unit.
3.4 Check the electrical connections.
Checkthescrewatthepowerinputconnector
toensurethattheacpowercordissecurely
terminated.Checkthescrew-inalarmterminals
toensurethatallwireconnectionsaretight.
A loose or damaged connection may result in
erratic operation and unnecessary downtime.
Refertothetroubleshootingsectionifan
electrical problem is encountered.
3.5 Check the duty cycle.
Checkthehourmeteronthefrontpanelto
determinethedutycycleofthedehydrator.
Ifthedehydratorhasbeenrunningformorethan
10%ofitsinstalledtime,checkthesystemsfor
leaks.
3.6 Parts Replacement
WhentheMR050Bdehydratorunitisinneed
ofservice,themaincomponentsaresimply
replaced.Thecompressor,desiccantcanister,
and control module are all meant to be
replaceableparts.Thepartscanbepurchased
fromCommScopeforeldreplacement,or
theunitcanbesenttotherepaircenterfor
component replacement. (See section 5 or 6)
3.7 Unit Shutdown and Removal
InordertoperformanoverhaulontheMR050B,
theunitmustbeturnedoffandremovedfrom
service.Asthisisbeingdone,thelowpressure
alarmmayactivatethroughareportingalarm
system.Personnelmonitoringsuchanalarm
shouldbenotiedinadvancesothattheyare
awareofthefactthatserviceisbeingperformed.
Itisalsonecessarytodisconnectthedehydrator
dryairoutputfromthewaveguidesystemduring
theoverhaul.

MR050B SERIES DEHYDRATOR USER MANUAL
9
Removethechassistopandfrontpanelsfor
overhaul.
1. Unplugtheunitfromthepowersupply.
2. Followtheinstructionsincludedinthe
compressorreplacementkit.Whenthe
replacement is complete, reinstall.
3.8 Service Restoration
RECOMMENDATION:
Verifyunitoperatesnormallyandreturnto
service.

MR050B SERIES DEHYDRATOR USER MANUAL
10
Section 4
Troubleshooting
Ifyouexperiencedifcultywithyourdehydrator,usethetroubleshootingproceduresdescribedbelow.
Caution: Electrical troubleshooting requires access to potentially dangerous voltages and
should only be performed by a licensed electrician
Problem/Condition Solution
Dehydratordisplaydoesnotlight,unitdoesnotrun.
Ifthedisplaylightfailstolight,makesuretheunitis
plugged in and power outlet is operating.
Ifyoustillhavenolight,unplugtheunit,removetheunit
coverandcheckforlooseconnections.Refertothewiring
diagramforproperconnections.Figure4forsummary
alarmunitorgure5.Fordiscretealarmunit
ChecktoassurethatthefuseisOK.
Checktoassurethatproperacvoltageisbeingsuppliedto
theinput.
Low-pressure alarm activated.
Plugtheunitoutputwithngerandobservepressure
gauge.Thepressuregaugelineshouldreadapproximately
0.5psigandthealarmshouldclear.Ifalarmdoesnotclear,
removecoverandverifytubingandwiringconnectionsare
secure.
Ifthepressuredoesnotremainconstantafterplugging
theoutput,applyleakdetectortoisolatetheleakinthe
dehydrator(exercisecarewhenapplyingsolutionnotto
wet wiring or electronics).
IftheproblempersistscontactCommScopeCustomer
Service. (See section 6 )
Compressor does not turn OFF. Checkforleaks.