CTEK® Multi US 3300 Battery Charger Guide
Contents
1. be used unless absolutely necessary Use of improper extension cord could result in a risk of fire and electric shock If an extension cord must be used make sure that a Pins on plug of extension cord are the same number size and shape as those of plug on charger b Extension cord is properly wired and in good electrical condition and c Wire size is large enough for ac ampere rating of charger as specified in technical data Do not operate charger with damaged cord or plug return the charger to the place where purchased Never operate the charger if it has received a sharp blow been dropped or otherwise damaged in any way take it to a qualified serviceman Do not disassemble charger take it to a qualified serviceman when service or repair is required Incorrect reassembly may result in a risk of electrical shock or fire To reduce risk of electric shock unplug charger from AC outlet before attempting any maintenance or cleaning Turning off controls will not reduce the risk 11 WARNING RISK OF EXPLOSIVE GASES a WORKING IN VICINITY OF A LEAD ACID BATTERY IS DANGEROUS BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION FOR THIS REASON IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE CHARGER b To reduce risk of battery explosion follow these instructions and those published by the battery manufacturer and the manufacturer of any equipment you intend to use in vicini2. charger casing can be cleaned using a damp cloth and mild cleaning agent Remove the plug from the power socket before cleaning CAR BATTERIES
3. CCTEK D MULTI US 3300 Battery Charger For lead acid batteries 2 90Ah User Manual and Guide to professional charging of starter and deep cycle batteries CUS gt INTRODUCTION The MULTI US 3300 is a primary switch mode battery charger with pulse maintenance The MULTI US 3300 is designed to offer maximum life for the battery MULTI US 3300 is a member of a family of professional chargers from CTEK SWEDEN AB It represents the state of the art of today s technology for battery charging Please read these operating instructions carefully before operating the MULTI US 3300 IMPORTANT SAFETY INSTRUCTIONS California Proposition 65 WARNING This product contains chemical known to the state of California to cause cancer or reproductive toxicity 1 SAVE THESE INSTRUCTIONS this manual contains important safety and operating instructions for battery charger models MULTI US 3300 When charging batteries can emit explosive gases therefore it is essential to prevent flames and sparks The charger is designed for charging lead acid batteries from 2 to 90Ah Do not use for any other purpose Always provide good ventilation when charging Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire electric shock or injury to persons To reduce risk of damage to electric plug and cord pull by the plug rather than cord when disconnecting charger An extension cord should not
4. RECAUTIONS Connect and disconnect dc output clips only after setting any charger switches to off position and removing ac cord from electric outlet Never allow clips to touch each other Attach clips to battery and chassis as indicated in 16 e 16 f 17 b through 17 d FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE A SPARK NEAR BATTERY MAY CAUSE BATTERY EXPLOSION TO REDUCE RISK OF A SPARK NEAR BATTERY 9 h Position AC and DC cords to reduce risk of damage by hood door or moving engine part Stay clear of fan blades belts pulleys and other parts that can cause injury to persons Check polarity of battery posts POSITIVE POS P battery post usually has larger diameter than NEGATIVE NEG N post Determine which post of battery is grounded connected to the chassis If nega tive post is grounded to the chassis as in most vehicles see e If positive post is grounded to the chassis see f For Negative grounded vehicle connect POSTIVE RED clip from battery char ger to POSITIVE POS P ungrounded post of battery Connect NEGATIVE BLACK clip to vehicle chassis or engine block away from battery Do not connect clip to carburetor fuel lines or sheet metal body parts Connect to a heavy gage metal part of the frame or engine block Charger connection 1 Connect positive charger clip red to positive battery terminal 2 Connect negative charger clip black to a good m
5. charge a frozen battery e Ke 2S 2 PREPARING TO CHARGE If necessary to remove battery from vehicle to charge always remove grounded terminal from battery first Make sure all accessories in the vehicle are off so as not to cause an arc Be sure area around battery is well ventilated while battery is being charged Clean battery terminals Be careful to keep corrosion from coming in contact with eyes Add distilled water in each cell until battery acid reaches level specified by bat tery manufacturer Do not overfill For a battery without removable cell caps such as valve regulated lead acid batteries carefully follow manufacturer s recharging instruction Study all battery manufacturer s specific precautions while charging and recom mended rates of charge Determine voltage of battery by referring to car owner s manual and make sure that the output voltage selector switch is set at correct voltage If charger has adjustable charge rate charge battery initially at lowest rate CHARGER LOCATION Locate charger as far away from battery as dc cables permit Never place charger directly above battery being charged gases from battery will corrode and damage charger Never allow battery acid to drip on charger when reading electrolyte specific gravity or filling battery Do not operate charger in a closed in area or restrict ventilation in any way Do not set a battery on top of charger DC CONNECTION P
6. ery Do not connect clip to fuel lines or sheet metal body parts c Connect the AC cord to the socket The red alarm indication light will indicate a battery which is connected to reverse polarity 4 Charging a battery grounded to the positive terminal Positive grounded vehicle Charger connection a Connect negative charger clip black to negative battery terminal b Connect positive charger clip red to a good metal engine ground away from the battery Do not connect clip to fuel lines or sheet metal body parts c Connect the AC cord to the socket The red alarm indication light will indicate a battery which is connected to reverse polarity Connecting the MULTI US 3300 to an out of vehicle battery 1 Check polarity of battery terminals POSITIVE POS P battery post usually has larger diameter than NEGATIVE NEG N post 2 Connect POSITIVE RED charger clip to POSITIVE POS P battery post 3 Connect NEGATIVE Black charger clip to NEGATIVE NEG N battery post The red alarm indication light will indicate a battery which is connected to reverse polarity 4 Connect charger s AC cord to socket Do not face the battery when making the final connection 6 When disconnecting charger disconnect in reverse sequence from connecting procedure See operating instructions for charge information a Starting the charging process 1 Set the correct charge mode by pressing the mode button You can find ou
7. etal engine ground away from the battery Do no connect clip to fuel lines or sheet metal body parts 3 Connect the AC cord to the socket The red alarm indication light will indicate a battery which is connected to reverse polarity For Positive grounded vehicle connect NEGATIVE BLACK clip from battery charger to NEGATIVE NEG N ungrounded post of battery Connect POSITIVE RED clip to vehicle chassis or engine block away from battery Do not connect clip to carburetor fuel lines or sheet metal body parts Connect to a heavy gage metal part of the frame or engine block Charger connection 1 Connect negative charger clip black to negative battery terminal 2 Connect positive charger clip red to a good metal engine ground away from the battery Do no connect clip to fuel lines or sheet metal body parts 3 Connect the AC cord to the socket The red alarm indication light will indicate a battery which is connected to reverse polarity When disconnecting charger turn switches to off disconnect AC cord remove clip from vehicle chassis and then remove clip from battery terminal See operating instructions for length of charge information 17 FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE A SPARK NEAR BATTERY MAY CAUSE BATTERY EXPLOSION TO REDUCE RISK OF A SPARK NEAR BATTERY a Check polarity of battery terminals POSITIVE POS P battery post usually has a larger diameter than NEGATIVE NEG N po
8. ode Type of batteries All types of lead acid batteries Battery Capacity 2 90Ah Dimensions 6 2 x 23h x 1h inches L x W x H Enclosure Splashproof Rainproof Weight 1 1 lbs The back current drain is the current that the charger uses from the battery when the wall plug is not connected The reverse current of the MULTI US 3300 is very low and corresponds to 1Ah per month CTEK The ripple wave describes how many disturbances are exhibited by current and voltage A rippled voltage can cause damage to other equipment connected to the battery The MULTI US 3300 supplies voltage and current with very low voltage rippling This increases the life of the battery and ensures that equipment connected to it will not be damaged Recommended Minimum AWG Size for AC Extension cords Length of cord feet m AWG Size of cord 25 7 6 18 50 15 2 18 100 30 5 18 150 45 6 16 OVERHEATING PROTECTION The MULTI US 3300 is equipped with overheating protection In high ambient tempera tures the output power is reduced Do not cover the charger BATTERY CABLES MULTI US 3300 is equipped with a set of battery cables with battery terminal clips and one set of battery cable with eyelet terminals MAINTENANCE The MULTI US 3300 is maintenance free The charger must not be opened doing so will invalidate the warranty If the power cable is damaged it must be replaced by CTEK or it s authorized representative The
9. puters are connected to the battery the charging process takes longer and this can also overcharge the battery Asulphated battery will only accept current with difficulty and consequently the charg ing process takes a particularly long time A worn out battery cannot be fully charged Therefore you should always check whether the charger has been switched to mainte nance charge before you leave it turned on or unobserved for any length of time Caution If the MULTI US 3300 does not switch to maintenance charge mode after three days manually switch it to pulse maintenance mode If the set has been switched to maintenance charge then everything is in order Note A battery that hasn t changed to maintenance charge after three days is most likely worn out and needs to be replaced All other batteries can be maintained for a very long time CHARGING Connecting the MULTI US 3300 Connecting the equipment to a battery fitted in the vehicle 1 When the battery cable is being connected or disconnected the plug of the MULTI US 3300 must be disconnected from the power socket 2 Establish which terminal is ground connected to the chassis Normally the negative terminal is grounded 3 Charging a battery grounded to the negative terminal Negative grounded vehicle Charger connection a Connect positive charger clip red to positive battery terminal b Connect negative charger clip black to a good metal engine ground away from the batt
10. recommended for many AGM batteries like Optima Maxxima and Odysses Consult your battery manufacturer when in doubt CHARGING CYCLE MULTI US 3300 operates in a four step fully automatic cycle It starts the charging with an almost constant current 0 8A or 3 3A until maximum voltage 14 4V or 14 7V is reached At this point the charger switches to constant voltage and the current supply to the battery is gradually reduced If the current drops to 0 4A the charger switches to pulse maintenance If the battery is charged and the terminal voltage of the battery falls to 12 9V the charger automatically starts again at the first step of the charge characteristic The MULTI US 3300 measures both voltage and current in order to determine out whether the charging process is finished or whether a new charging cycle must be started Various methods are used depending on the time of the measurement see table When Reading Yes No Before the start or Voltage higher than Green indicator lit Orange indicator after changing the 12 9V until the voltage charging process charging mode lt 12 9V During the charging Current greater than Orange indicator Green indicator process 0 4A charging process illuminated until the voltage lt 12 9V Voltage Volts Desulphation Bulk Absorption Pulse Current Amperes Desulphation Desulphation with pulsing for sulphated batteries Bulk Cha
11. rging where about 80 of the energy is returned The charger delivers an almost constant current until the battery voltage reaches the set level Absorption Charging up to almost 100 The charge current tapers and the voltage is kept constant at the set level Pulse Maintenance charge The charging process ranges between 95 and 100 The battery receives a pulse if the voltage falls This stage will keep your battery in a good condition if it is not being used BULK CHARGING TIME The table shows the duration of the Bulk step up to about 80 state of charge The time for the Absorption should be added Battery size Ah Mode Time h 2 2 3 a2 8 8 10 14 3 4 50 k 12 14 90 aii 23 26 INDICATORS Incorrect polarity mm Charging process i Charging completed Pulse maintenance O Standby Power on Charger ready to use please select charging function TECHNICAL DATA Voltage AC 120VAC 60Hz Output power is reduced at lower input voltage A perfect charge will still be achieved Current 11A rms Back Current Drain 1 3mA Charging Voltage Nominal 12V 14 4 14 7V Ripple Max 50mV rms max 0 13A Charging Current 0 8 3 3A max Ambient Temperature 4 F to 122 F Automatic reduction of power at increased ambient temperature Cooling Natural convection Do not cover the charger Charger type Four step fully automatic with pulse maintenance m
12. st b Attach at least a 24 inch long 6 gauge AWG insulated battery cable to NEGATIVE NEG N battery post c Connect POSITIVE RED charger clip to POSITIVE POS P battery of post d Position yourself and free end of cable as far away from battery as possible then connect NEGATIVE BLACK charger clip to free end of cable e Do not face the battery when making the final connection f When disconnecting charger always do so in reverse sequence of connecting procedure and break first connection while as far away from battery as practical g When disconnecting charger disconnect in reverse sequence from connecting procedure See operating instructions for charge information h A marine boat battery must be removed and charged on shore To charge it on board requires equipment specially designed for marine use The battery charger must be connected to the battery according to the instructions above IMPORTANT SAFETY INFORMATION The MULTI US 3300 cannot be used to restore a fully worn out battery If the MULTI US 3300 does not switch to maintenance charge after three days green light illuminated there is a fault Possible causes The battery is probably worn out and should be replaced Some large antimony batteries may behave different and can allow the MULTI US 3300 to charge the battery for too long which can lead to overcharging See caution If heavy power consumers like fitted alarms and navigation com
13. t how to select the correct charge mode to be used for charging your battery in the section on SETTINGS 2 Once you have established that the battery cable has been correctly connected you can start the charging process To do so insert the charger plug into the AC socket 3 Now either the charge indicator fami or the maintenance charge indicator fill lights up When the maintenance charge indicator lights up the battery is fully charged If the battery voltage drops the charger sends a pulse to the battery The length of the pulse depends on how much charge the battery has lost The MULTI US 3300 may be connected for months at a time However it is recommended to monitor batteries on charge 4 If nothing happens If the indicator for the set voltage is still illuminated but no other indicator is illuminated the connection to the battery or the chassis could be faulty or the battery could be defective If the charging process has not started this could be due to the fact that the power socket is not supplying a current 5 The charging process can be interrupted at any time In addition pull the plug of the charger out of the power socket or put the charger on Stand by Power On Always remove the plug of the charger from the power socket before disconnecting the battery cable If you interrupt the charging process of a battery fitted in a vehicle the battery cable must always be first disconnected from the chassis and then from the o
14. ther battery cable 6 If the indicator for charge uml and maintenance charge W are flashing alternately this may have the following causes e Interruption of the charging process because a cable has become loose or because the battery is not conducting The battery is sulphated If the indicator flashes for more than 30 minutes the battery may be defective and should be replaced e If the flashing signal is flashing at intervals of more than 10 seconds then there is a high self discharge of the battery indicating a bad battery BATTERY TYPES AND SETTINGS MULTI US 3300 can easily be set for different types of batteries or conditions The fol lowing recommendations should however only be seen as guidelines Please consult the battery manufacturer for further instructions Settings are made by pressing the MODE button and stepping forward one press at a time until the required mode is reached the button is then released The selected mode is saved in a memory in the charger and remains there even if the charger is switched off loa Mode 14 4V 0 8A This mode is normally used for batteries lt 14Ah Mode 14 4V 3 3A Normal setting for wet batteries maintenance free and for most Gel batteries Some gel batteries prefer a slightly lower voltage Please consult the battery manufacturer when in doubt isi Mode 14 7V 3 3A This setting is recommended for a battery at temperatures lt 41 F It is also
15. ty of battery Review cautionary marking on these products and on engine 12 PERSONAL PRECAUTIONS a Consider have some one close enough by to come to your aid when you work near a lead acid battery b Have plenty of fresh water and soap nearby in case battery acid contacts skin clothing or eyes c Wear complete eye protection and clothing protection Avoid touching eyes while working near battery d If battery acid contacts skin or clothing wash immediately with soap and water If acid enters eye immediately flood eye with running cold water for at least 10 minutes and get medical attention immediately e NEVER smoke or allow a spark or flame in vicinity of battery or engine f Be extra cautious to reduce risk of dropping a metal tool onto battery It might spark or short circuit battery or other electrical part that may cause explosion Remove personal metal items such as rings bracelets necklaces and watches when working with lead acid battery A lead acid battery can produce a short cir cuit current high enough to weld a ring or the like to metal causing a severe burn h Use charger for charging a LEAD ACID battery only It is not intended to supply power to a low voltage electrical system other than in a starter motor application Do not use battery charger for charging dry cell batteries that are commonly used with home appliances These batteries may burst and cause injury to persons and damage to property i Never
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