Sargent EC175 Series User manual

EC175PowerControlSystem
Issue 1Page 1 of1420 July2014
1Introduction
Thissection ofthe handbookwillguide youthrough the operation ofthe electricalsystem.
Furthertechnicaldetailsare contained laterinthisdocument orin the supporting technicalmanual
available from www.sargentltd.co.uk
Forthe safe operationofall electricalequipment within yourcaravan it isimportant that you read and
fullyunderstandtheseinstructions.If youare unsureofanypoint please contactyourdealer/
distributorforadvicebeforeuse.
The systemhasa numberofkeycomponentsthat youwillneedto be familiarwithbefore attempting to
use thesystem, these are:
·The EC175 series PowerSupplyUnit(PSU) -acombined mains230V/12Vconsumerunit and
charger/ controllerlocatedin the front bed box.
·The EC360 orEC350 series ControlPanel (CP) -aremotelylocated usercontrolpanelused to
turn circuitson and off and to displaybatteryand watertankinformation (where applicable).
2Using theSystem
The PSUislocatedinthefront offside bed box.
2.1EC175 PowerSupplyUnit–ComponentLayout

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2.2Activating theSystem
The EC175 systemhasa shutdown feature that should be used whenthecaravan isin storage oris
not being used forlong periodsoftime. Thisallowsthe leisureelectronics to be turned off whennot
required tosave batterypower. When in theoff state the alarmand tracking systemsuppliesare still
active, most othersuppliesare turned off.
Before using the systemplease ensure the systemshutdown switchisin the on position (button in).
PSU– 12VControls
The blacksystemshutdown button isshown onthe
left. In isON and out isOFF.
The othertwo switchesarefor230V,andare
coveredin section 2.3
2.3Connecting totheMains230V supplyand Safetychecks
Foryoursafetyit isIMPORTANTthat you follow theseconnectionsinstructionseach timeyourcaravan
isconnected to a mainssupply. Thissection assumesthat the systemiscomplete and that aLeisure
batteryhasbeen installed (see 3.3).
A)Ensure suitabilityof theMains Supply.Yourcaravan shouldonlybe connected to an approved
supplythat meetsthe requirementsofBS7671orrelevant harmonised standards.In most cases
the sitewarden will hold information regarding suitabilityofsupply. Ifusing a generatoryou also
needto complywith the requirements/ instructionssupplied withthegenerator. Please note that
some electronicgenerators maynot becompatiblewithyourleisure system. Furthergenerator
operationalinformation iscontained in section 3.4.
B)Switchthe PSUinternalPowerConverterOFF. Locate the green ‘Charger’powerswitch on the
PSUand ensure the switchisintheoff position (buttonout)before connectionto the mainssupply.
C)Connectthe Hook-up Lead. Firstlyconnect the supplied hook-up lead (orange cablewith blue
connectors) to the caravan and thenconnect to the mainssupply.
D)Check Residual Current Device operation. Locate the RCDwithin thePSUand ensurethe RCD
isswitched on(leverinup position). Press the ‘Test’button and confirmthat the RCD turnsoff
(leverindown position). Switch the RCD backto the on position (leverin up position).Ifthe test
button failed to operate theRCD see section 3.1 &3.8.
E)Check Miniature CircuitBreakers. Locate the MCB’s within the PSU(adjacent to the RCD)and
ensure theyareallin the on (up)position. IfanyMCBfailsto ‘latch’inthe on positionsee section
3.1 &3.8.
F) Turnthe PSU ON. Locatethe black‘Shutdown’buttonand ensureitisintheon position (press
button tochange, button in=on, button out =off). Locate the green ‘Charger’switch on the PSU
and turn totheon position (press button to change, button in=on, button out =off). The charger
switchwillilluminatewhen turned on.
G) Check operation of equipment. It isnowsafe to operate the 12Vand 230Vequipment.

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PSU– 230VControls
Levertype switch, farleft – ResidualCurrent
Device (RCD)and main 230Von / off switch.
Push button, farleft – RCD Test button.
3 xleverswitches, right –Miniature Circuit
Breakers (MCB). Note thelevercolourand MCB
ratingmayvary. Seethesafetyand rating
stickeradjacent to the PSUforfurtherdetails.
Green pushswitch,farright– Chargerswitch,
thisswitchturnsthe 12Vbatterychargeron or
off. In isON out isOFF.
Amberpush switch– Heaterswitch, thisswitch
turnsthe 230Vsupplyto the combination water
heater/ centralheatingsystemon oroff. In is
ON out isOFF.
Note the farleft 12VDC Shutdown switchis
coveredin section 2.2.
2.4Operation whiledriving
The EC175 systemisdesigned to shutdown partsofthe systemwhilst the carengine isrunning. This
isto meet Electro MagneticCompatibility(EMC)regulationsand to ensure the safe operation ofthe
system.
Please ensure the systemshutdown switchon the PSU isin the “on”(button in)position before towing
(see 2.2). Thiswillensure the electronicsystemisactiveand will therefore be able to controlthe
charging process, supplythe refrigeratorand monitorothersystemcircuits.
2.5Control Panel -ComponentLayout
EC350 DigitalControlPanel(LED display)

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EC360 DigitalControlPanel(LCD display)
2.6Control Panel Operation
Button Button Description
Powerbutton. Press the powerbuttonto turn the leisure poweron. Press the button
again to turnthe poweroff. The adjacent LEDwill illuminate when the powerison, and
also the voltage oftheselected batterywill be displayed on the screen. When thecar
engine isrunning thisLEDwillflash to indicate the leisure batteryisbeing charged.
Pump button. With the poweron, press the pump button to turnthe waterpump on.
Press the button again to turn the pump off. The adjacent LEDwill illuminate when the
pump ison, and also the levelofthe watertankwillbe displayed on the screen(ifthe
optionalonboardwatertankisfitted).
Light button. With the poweron, press the light button toturn the maininternallighting on.
Press the button again to turn the lightsoff. The adjacent LEDwill illuminate when the
lightsareon. The lightswillbeturned on and off automaticallyeach time the powerbutton
isoperated.
Awning Light button. With thepoweron, press theawning light button to turn the awning
light on oroff. The adjacent LED will illuminatewhen the light ison.
EC360 EC350
L
Select/ showleisure button. Use this
button toselectthe leisurebattery. Ifthe
batteryisalreadyselected the buttonwill
displaythebatteryvoltage on the LED bar
graph display.
The LED next to the button willturnonto
showthe batteryisselected.
Levels / scroll button. Use
thisbutton to scrollthrough the
variouslevelsscreens/ menu
itemsorto cancelalarms/
warnings. Note: The screen
illumination / backlight will turn
off aftera period oftime. Press
the levelsbutton to reactivate
the illumination.
Selectbutton. Use thisbutton
to select options/ itemsorto
changesettings. V
Select/ showvehicle button. Ifthe tow
vehicleisconnected andyou need to use
the vehiclebattery,press thisbutton to
select it.
Ifthe batteryisalreadyselected the button
willdisplaythe batteryvoltage on the LED
bargraph display.
The LED next to the button willturnonto
showthe batteryisselected.

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3System Technical Information
The following section providesfurthertechnicalinformation relating to the electricalsystem.
3.1Residual CurrentDevice &MiniatureCircuitBreakers
The Residual Current Device(RCD) is basically
provided toprotect theuser fromlethalelectricshock.
The RCD will turnoff (trip)if thecurrent flowing inthe
liveconductordoesnot fullyreturndowntheneutral
conductor, i.e.somecurrentispassingthrougha
persondowntoearthor through afaultyappliance.
Toensurethe RCD isworkingcorrectly, thetest
buttonshouldbe operatedeachtimethecaravan is
connected tothemainssupply(see section2.3)
The MiniatureCircuit Breakers(MCB’s) operatein a
similar waytotraditionalfusesand areprovided to
protect thewiring installationfromoverload or short
circuit. If anoverload occursthe MCB will switchoff
the supply. If this occursyou should investigatethe
causeofthefault beforeswitching the MCB back on.
The following table showsthe rating and circuitallocation forthe three MCB’s
MCB Rating Description (cablecolour)
1 10 Amps 230VSockets(white)
2 16 Amps Combination waterheater/centralheating system(yellow)/ Extra 230V
Sockets(white)
3 10 Amps Fridge (black)/ 12VCharger(internallyconnected)
3.2BatteryCharger
The EC175PSUincorporatesa fixed voltage batterycharger/ powerconverter. The batterycharger/
powerconverteralso powers the leisureequipment when the mainssupplyisconnected.Thismodule
supplies13.8VDC to the leisure equipment up toa maximumof12 Amps(155 Watts), therefore the
available powerisdistributed between the leisure loadand the battery,with the leisure load taking
priorityasperthe following example:
Leisureload Available powerforbattery charging
3A 9A
6A 6A
9A 3A
12A 0A
WARNING
Underheavyloadsthe powersupplyunit case maybecome hot. ALWAYS ensure theventilation
slotshavea clearflowofair. Do not place combustible materialsagainst / adjacent to the EC175.
The PSUwillshutdown ifoverheated and willrestartautomaticallywhencool.

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3.3LeisureBattery
3.3.1Type / Selection
Foroptimumperformance and safetyitisessentialthat onlya proprietarybrand LEISUREbatteryis
used with a typicalcapacityof75 to 120Ah(Ampere / hours). Anormalvehicle batteryisnot suitable.
Thisbatteryshouldalwaysbe connected when the systemisin use.
The PSUisconfigured to workwith standard lead acid leisure batteries, and in most casesisalso
compatiblewiththelatest rangeofAbsorbed Glass Matt (AGM)batteries. Beforefittingnon-standard
batteriespleasecheckthat the fixed charging profiledescribed in3.2 issuitable forthe type ofbattery
byreferring to the batterydocumentationorbatterymanufacturer.
The batteryfeed isfitted with an inline fuse between the batteryandtheelectricalharness,whichis
usuallylocated immediatelyoutside the batterycompartment orwithin 500mmofthe battery. The
maximumrating ofthisfuse is20A.
3.3.2Installation & Removal
Alwaysdisconnect the 230Vmainssupplyand turn the PSU green chargerswitch to the off position
(buttonout)before removing orinstalling the battery.
When connecting the battery,ensure that the correct polarityisobserved (blackis negative[-] and red
ispositive [+])and that the terminalsare securelyfastened. Crocodile clipsmustnot be used.
WARNING
Explosive gasesmaybe present at the battery.Takecare to prevent flamesand sparks in thevicinity
ofthe batteryand do not smoke.
3.3.3Operation / Servicing
Undernormalcircumstancesit shouldnot be necessaryto remove thebatteryotherthanforroutine
inspection ofthe terminalsand “toppingup”ofthe batteryfluidwhere applicable. Please see
instructionssupplied withthe battery.
Note: Do not overdischarge thebattery.One ofthe most common causesofbatteryfailureiswhen
the batteryisdischarged below therecommended levelofapproximately11.5V. Discharging a battery
belowthisfigure can causepermanent damage to one ormore ofthe cellswithin the battery.
To preventoverdischarge, the EC175 systemincorporatesa batteryprotect circuit that warnsthe
users and thendisconnectsthe batterieswhen theyfall belowset values. See 3.6 belowfordetails.
3.4Generator Usage
Caution should be used before connecting a generatorto yourcaravan.
WARNING
Neverstart orstopthegeneratorwhile electricalloadsare connectedand switched on.Start the
engine,let itstabilise and then connect the electricalload. To stop the engine, disconnect the
electricalload and let engine stabilise before switching off
Whilst some generators use electronicinvertertechnology,others use a more basicprinciple to
generate the 230Vsupply. Preference shouldbe to choose a generatorwhichproducesa consistent
sinusoidalwave formwith accurate voltage control.
The ReversePolaritywarning light on the PSU mayilluminate when using a Generator. Thisisa
normalside effect when using some typesofgenerator. Instead ofconnecting the neutralconductorto
earth, some generators centre tap the earthconnection making both neutralandlive conductors 110V
aboveearth. This110Vdifference causesthe neon polarityindicatorto illuminate.
In most casesit issafe to use a generator, but pleaseconsult the generatorhandbookforfurther
information.
3.5Awning LightOperation
The awning light iscontrolbythe controlpanelawning light button. On somemodelsthe awning light
isalsolinked to the optionalalarmsystemto enable remote controlwith the alarmfob.

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3.6SystemWarnings
The systemincorporatesa numberofwarningsthat are activeat specifictimes. These are
summarised below, and also covered byrelevant sectionsofthismanual.
Warning When Type
Fresh waterlevellow With pump turned on and freshwater
levellow (less than 25%full)
Onlyavailable when an onboard tankis
fitted
Message on screen and 30second
audible beep
With controlpanelpoweron and leisure
batteryselected (asactivebattery)and
the voltage levelfallsbelow10V
Message on screen (orflashing LED
bargraph on EC350)and 30 second
audible beep.
With controlpanelpoweron and leisure
batteryselected (asactivebattery)and
the voltage levelisbelow 9V
Message on screen (orflashing LED
bargraph on EC350)and 30 second
audible beep.Ifno action taken after
30 secondsthen the systemwill switch
the powerofto preventsevere
dischargeofthe battery
Leisurebatteryvoltage
low
Note: Thisisan emergencycut off leveltoprotectthe batteryfromsevere
damage. You should not relyonthiscut off levelduring normaloperation,but
manage yourpowerconsumption to a discharge levelof11.5Vorabove.
Thiscut off onlyappliestopowerdrawn fromthe batterybythe leisureequipment
that iscontrolled bythe controlpanelpowerswitch; itwillnot protect thebattery
fromdischarge bypermanentlyconnectedequipment.
Leisurebatteryvoltage
high
With controlpanelpoweron oroff and
leisure batteryisselected (asactive
battery)and thevoltage levelrises
above15.4V
Message on screen (orflashing LED
bargraph on EC350)and repeated
beepsfromthe controlpanel. The
beepingwillnot stop until the faultis
cleared.
Vehiclebattery
warnings
Ifthe vehicle batteryisselected insteadofthe leisure battery,then the same
warningsdescribed above forthe leisure batteryareapplied to thevehicle
battery.
Engine running When the engine isstarted the system
powerwillbe turned off
Message on screen (EC360 only)and
powerbutton LED flashing indicating
both batteriesare connected for
charging.
3.712 VoltDC Fuses
WARNING
When replacing fusesalwaysreplace a fusewiththecorrect value. NEVER replace witha highervalue /
ratingasthiscould damage the wiring harness. Ifa replacement fuse ‘blows’ do not keep replacing the
fuse asyou could damage the wiring harness. Pleaseinvestigate the fault and contactyourdealer.
The following table showsthe fuse allocation forthe 12 fusesfitted to the PSU. Please note that fuses
are dependant onPSUversionsand installation, sonot all fusesmaybe present orused.
Fuse Rating Fuse Colour Description
1 10 Amps Red WaterPumps/ Toilet
2 2 Amps Grey Permanent Supplies/ Electronics
3 5 Amps Tan HeaterFans
4 10 Amps Red Lights
5 15 Amps Blue Fridge Element (during towing)

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6 10 Amps Red ExtractorFans
7 5 Amps Tan Ignitions
8 10 Amps Red Switched Lights
9 20 Amps Yellow VehicleBattery
10 20 Amps Yellow LeisureBattery
11 10 Amps Red 12VSockets
12 15 Amps Blue Charger
The following table showsdetailsofthe fuse(s) located at the Leisure battery.
Fuse Rating Fuse Colour Description
Battery1 20 Amps Yellow Fuse remotelylocated nearbattery
3.8Common FaultTable
Fault Possible Cause ProposedFix
Connectinglead between
the siteand Leisure
Vehicle notconnected
Checkandconnect lead asper 2.3C
RCD switched off Reset RCD asper2.3D
RCD not operating
correctly
Checksupplypolarity; if the RCD continuestofailcontact your Dealer
asthereisprobablyan equipmentor wiring fault.
MCB switched off
Reset MCB byswitching OFF (downposition)thenback ON(up
position), ifthe MCB continuestofail contact yourDealer asthereis
probablyan equipment orwiring fault.
Noor deficientsupply
fromsite Contact siteWardenforassistance.
No230 volt
outputfromPSU
Other fault Contact your Dealer.
Control Panelhasno
display
Backlight / illumination mayhaveswitched off. Pressthepower
buttonorselectbuttontoreactivatethebacklight.
Checkbatteriesand fuses, turnPSU shutdownswitchand charger
switchonandensuremainssupplyisconnected.
Checkcontrolpanel connectingleadat PSU and behind Control
Panel.
Contact your Dealer.
12vPower turnsoff
Batteryprotectfeaturehasoperated toprotect theVehicle battery
and orthe Leisurebattery. See3.6
Enginehasbeen started, all equipmenthasbeen disconnected to
meet EMC requirements.See2.4
Control Panel
Problems
Control Panellocked /
erraticfunction
Observecontrolpanel handlinginstructions
Control panel softwaremayhavecrashed.Reboot controlpanel by
turningoffthe PSU isolateswitch. Wait30 secondsthen turnthe
switchback on.
No230vsupply Checkallabove.
Charger notswitched on Turncharger switchon,switchwill illuminate.
Batterynotconnected and
/ or charged Install charged batteryasper3.3
Power button oncontrol
panelnotswitchedtoon Turnpower on atcontrol panel.
Batteryflat/ Batteryfuse
blown
Rechargebattery, check fuses, checkcharging voltage is presentat
battery.
Fuseblown Checkallfusesareintact and the correct valuefuseisinstalled as
per fusetable.
No12 voltoutput
fromPSU
Equipmentswitchedoff /
unplugged Checkequipmentis switchedon andconnectedtothe 12vsupply.

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Fault Possible Cause ProposedFix
PSU overheated/ auto
shutdownoperated
Reduceload onsystem.AllowPSU tocool down. PSU will
automaticallyrestart when cool.
Other fault Contact your Dealer.
Fuseblown Replacefusewithcorrect valueasper fusetable.
Pumpturnedoff Turnpumpon bypressingthepumpbutton at thecontrolpanel.
Pumpnot
working
Settingincorrect
Boththeinternalandexternal pumpfeedsarecontrolledfromthe
control panel. Toalter thesetting of the pumpswitchseeyour dealer.
Ensurethe settingmatchesyour desiredrequirement.
3.9Contactdetails
Sargent ElectricalServicesLimited, provide a technicalhelp line duringoffice hours. Please contact
01482 678981 if yourequire technicalhelp. Forout ofhoursupportplease referto thetech support
section ofthe Sargent website www.sargentltd.co.uk

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4EC350 Control Panel
In addition to the information contained in section 2.6 (ControlPanelOperation), the following section
providesfurtherdetailinformation.
4.1LEDBarGraph
The LEDBarGraph displaysthe voltage ofthe selected battery.
LED Colour Voltagereading
1 Red <9.5 (<9 LED Flashes)
2 Red 9.5 -10.9
3 Amber 11 -11.4
4 Amber 11.5 -11.9
5 Amber 12.0 -12.4
6 Green 12.5 -12.9
7 Green 13.0 -13.4
8 Green 13.5 -13.9
9 Green 14.0 -14.4(>15.4 LED Flashes)
When the controlpanelpowerisonand the leisurebatteryisselected (Leisurebatterybutton LEDon),
pressing the leisure battery Lbutton willdisplaythebatteryvoltage on the bargraph.
When the controlpanelpowerisonand thevehiclebatteryisselected (Vehicle batterybutton LED on),
pressing the vehicle battery Vbutton willdisplaythebatteryvoltage on the bargraph.