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****** Page 1 ****** ELGAR GLOBAL UNINTERRUPTIBLE POWER SUPPLY (GUPS) MODEL GUPS 2400 OPERATION MAN L ELGAR ELECT CORPORATION 9250 Brown De R San Diego, C 294 1-800-733-5 Tel: (858)’ Fax: (85 8-4 67 Email’* I 01996 by Elgar Electronics Corporation This d cument contains information proprietary to Elgar Electronics Corporation. The information contained herein is not to be duplicated or transferred in any manner without prior written permission from Elgar Electronics Corporation. February 27, 1996 Document No. M151501-01 Rev D

****** Page 3 ****** ELGAR ONE-YEAR WARRANTY Elgar Electronics Corporation (hereinafter referred to as Elgar) warrants its products to be free from defects in material and workmanship. This warranty is effective for one year from the date of shipment of the product to the original purchaser. Liability of Elgar under this warranty shall exist provided that: the Buyer exposes the product to normat use and service and provides normal maintenance on the product; Elgar is promptly notified of defects by the Buyer and that notification occurs within the warranty period; the Buyer receives a Return Material Authorization (RMA) number from Elgar’s Repair Department prior to the return of the product to Elgar for repair, phone 800-73-ELGAR (800-733-5427), ext 2295; the Buyer returns the defective product in the original, or equivalent, shipping container; if, upon examination of such product by Elgar it is disclosed that, in fact, a defect in materials and/or workmanship does exist, that the defect in the product was not caused by improper conditions, misuse, or negligence; and, that Elgar QA seal and nameplates have not been altered or removed and the equipment has not been repaired or modified by anyone other than Elgar authorized personnel. This warranty is exclusive and in lieu of all other warranties, expressed or implied, including, but not limited to, implied warranties of merchantability and fitness of the product to a particular purpose. Elgar, its agents, or representatives shall in no circumstance be liable for any direct, indirect, special, penal, or consequential loss or damage of any nature resulting from the malfunction of the product. Remedies under this warranty are expressiy limited to repair or replacement of the product. CONDITIONS OF WARRANTY To return a defective product, contact an Elgar representative or the Elgar factory for an RMA number. Unauthorized returns will not be accepted and will be returned at the shipper’s expense. For Elgar products found to be defective within thirty days of receipt by the original purchaser, Elgar will absorb all ground freight charges for the repair. Products found defective within the warranty period, but beyond the initial thirty-day period, should be returned prepaid to Elgar for repair. Elgar will repair the unit and return it by ground freight pre-paid. Normal warranty service is performed at Elgar during the weekday hours of 7:30 am to 4:30 pm Pacific time. Warranty repair work requested to be accomplished outside of normal working hours will be subject to Elgar non-warranty service rates. Warranty field service is available on an emergency basis. Travel expenses (travel time, per diem expense, and related air fare) are the responsibility of the Buyer. A Buyer purchase order is required by Elgar prior to scheduling. A returned product found, upon inspection by Elgar, to be in specification is subject to an inspection fee and applicable freight charges. Equipment purchased in the United States carries only a United States warranty for which repair must be accomplished at the Elgar factory. Committed to Quality…Striving for Excellence

****** Page 5 ****** SAFETY NOTICE BEFORE APPLYING POWER to the System, verify that the GUPS 2400A is properly configured for the user’s particular application. WARNING HAZARDOUS VOLTAGES EXCESS OF 280 VRMS, .400V. PEAK MAY. BE PRESENT WHEN •COVERS ARE REMOVED, QUALIFIED PERSONNEL MUST •USE EXTREME CAUTION WHEN SERVICING THIS EQUIPMENT. BOARDS, TEST POINTS AND CIRCUIT OUTPUT VOLTAGES MAY ALSO FLOATING ABOVE (BELOW) CHASSIS. GROUND, Installation and servicing must be performed by QUALIFIED PERSONNEL who are aware of properly dealing with attendant hazards. This includes such simple tasks as fuse verification. Ensure that the AC power line ground is properly connected to the GUPS 2400A input connector or chassis. Similarly, other power ground lines including those to application and maintenance equipment MUST be properly grounded for both personnel and equipment safety. Always ensure that facility AC input and DC input power is de—energized prior to connecting or disconnecting the power cables. Similarly, the GUPS 2400A circuit breaker must be switched OFF prior to connecting or disconnecting output power. In normal operation, the operator does not have access to hazardous voltages within the chassis. However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The Customer/User must ensure that the output power lines are properly labeled as to the SAFETY hazards and any that inadvertent contact with hazardous voltages is eliminated. Guard against risks of electrical shock during open cover checks by NOT TOUCHING any portion of the electrical circuits. Even when power is OFF, capacitors may retain an electrical charge. Use SAFETY GLASSES during open cover checks to avoid personal injury by any sudden component failure. Always disconnect the AC and DC input power, and allow three minutes, minimum, prior to performing any internal servicing.


****** Page 8 ****** TABLE OF CONTENTS GUPS 2400A Page 3-5 3—6 4-2 2-2 2—6 2— 3-3 2-3 2-8 2-2 3- 3-6 4-3 3.5 3.6 3.7 BATTERY OPERATION BATTERY INFORMATION, CARE AND HANDLING AUTOMATIC BATTERY EQUALIZATION SECTION OPERATOR MAINTENANCE 4.1 4.2 4.3 4.4 4.5 1 3 1 1 1 2 1 INTRODUCTION SERVICE INFORMATION SPARE AND REPAIR PARTS PERIODIC MAINTENANCE TROUBLESHOOTING LIST OF FIGURES GUPS 2400A (Front View) GUPS 2400A (Rear View) GUPS 2400A (Top and Side Views) GUPS 2400A Control and Indicator Panel LIST OF TABLES GUPS 2400A Input/Output Connectors Recommended Wire Gauge Selection Guide GUPS 2400A Connector Pin Assignments Battery Storage Times GUPS 2400A Troubleshooting Guide


****** Page 11 ****** GUPS 2400A 1.1 INTRODUCTION SECTION I – GENERAL DESCRIPTION The Elgar Model GUPS 2400A is a 2400 VA Global Uninterruptible Power Supply (GUPS) that provides regulated 115 VRMS, 60 Hz output power at up to 20.8 Amps RMS load current. The GUPS 2400A accepts AC input voltages from 85V to 280V at frequencies from 45 Hz to 450 Hz. A battery backup of 5 minutes at 2400 VA output is also provided by a removable battery pack. Output power is continuous when transferring from AC to battery or battery to AC. 1.2 GENERAL DESCRIPTION The Elgar Model GUPS 2400A is contained in a 7″ (178 mm) high by 19″ (483 mm) wide by 21 ” (533 mm) deep rack—mount enclosure. All input and output connections are made at the rear panel. Cooling air is drawn in through a filter on the front panel and exhausted out the rear panel. Operational and input/output power status is indicated by front panel LEDs. A master power switch and control pushbutton switches are also provided on the front panel. There are no operator adjustments. 1.3 SPECIFICATIONS AG-lnpu.t.YQLtage: There are two ranges, automatically selected: 85 to 140V or 170 to 280V (the input circuit breaker must be de-energized when switching between the two ranges). 33A} nominal, at 120 VAC input voltage; 17A, nominal, at 240 VAC input voltage. AG-lnput-Ereq-ency.• 45 to 450 Hz. 192 VDC, nominal, through an optional extended battery connector (non—isolated from the AC line input). Batteries: Internal (standard), one pack; External (optional), two packs. 5 minutes with a 2400 VA load, 0.8 power factor, and one internal battery pack. Battery-Recharge-lime: 4 hours to 90% capacity. Output-YQltage: 115V ±2% over the full range of line/load regulation, stability and accuracy. Output-Ereguencx.• 60 Hz 1-1

****** Page 12 ****** GUPS 2400A SECTION I – GENERAL DESCRIPTION Output-Current: 20.8 Amps RMS. Output-Curre.nt.-Crest.Eactor• 3:1, maximum. Output-.P.istQ.rtiQn: 2% maximum Total Harmonic Distortion (THD) with linear loads. Output-P.Q.we-r: 1920 watts into a resistive load; 2400 VA into a ±0.8 power factor. Efficiency: 70% operating on AC. AG.-tQ-DC-Cr-QSSQ-vgr: 85/170 VAC, minimum, and 140/280 VAC, maximum. Power-Loss-During-Cr-QSQ.uer• None. Temperature: Operating: OOC to 400C (320F to 1040F); Non—Operating: -400C to 6500 (-400F to 1490F). Humidity: Operating: 5% to 95% non-condensing. Altitude: Operating: O to 10,000 feet; Non—Operating: 0 to 40,000 feet; 2000 feet/mjn. max. Height: Depth: Width: 711 (178 mm) 21 u (533 mm) 19″ (483 mm). Fits standard RETMA rack. Weight: 78 lbs. (35 kg), maximum, without battery pack; internal battery pack weighs 48 lbs. (22 kg); 126 lbs. (57 kg), maximum, combined weight. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. 1-2

****** Page 13 ****** SECTION II INSTALLATION

****** Page 15 ****** GUPS 2400A 2.1 INTRODUCTION SECTION II – INSTALLATION The Elgar Model GUPS 2400A has been aligned, calibrated, and tested prior to shipment. Therefore, the instrument is ready for immediate use upon receipt. However, the following checks should be made to ensure that the instrument was not damaged during shipment. WARNING T.he GUPS 2400A weighs •78 pounds kg) without:the battery pack;. •installed, the battery pack. adds an additional’ 48 pounds (22 kg)r A person lift required! WARNING Hä voltages .are: :present when operating this equipment. Read •the ‘iSAFETYll notices on pageii priöH:to• performinghstallation, Operationy or maintenance, 2.2 UNPACKING Perform a visual inspection of the shipping container prior to accepting the package from the carrier. If extensive damage to the shipping container is evident, a description of the damage should be noted on the carriers receipt and signed by the driver of the carrier agent. If damage is not apparent until the instrument is unpacked, a claim for concealed damage should be placed with the carrier. In addition, the shipping container(s) and filler material should be saved for inspection. Forward a report of damage to the Elgar Repair Department. Elgar will provide instructions for repair or replacement of the instrument. When returning the instrument to Elgar, suitable shipping containers and packing material must be used. If the instrument needs to be shipped and proper packing material is not available, contact Elgar to provide containers and shipping instructions.

****** Page 16 ****** GUPS 2400A SECTION II – INSTALLATION 2.3 PRE-INSTALLATION INSPECTION Perform a visual inspection of the instrument when it is removed from the shipping container. Check for shipping damage such as dents, scratches, distortion, and damaged connectors. If the instrument or container(s) show signs of rough handling, remove the covers from the instrument to ensure that the circuit boards are securely in place and that no loose or broken components are evident. 2.4 INSTALLATION The Model GUPS 2400A is 7″ (178 mm) high and is designed to be standard 19″ (483 mm) wide cabinet enclosure or a transit case. Avoid blocking the air intakes or exhaust. 2.5 AIR INTAKE AND EXHAUST installed in a The air intake is located on the front panel of the instrument and the exhaust is through the rear panel. Care must be taken not to block the air intake and exhaust. No special vertical separation is required when stacking instruments. However, a 1 —3/4″ (43.75 mm) vertical spacer above and below the instrument may improve cooling. 2.6 INSTALLATION/DIMENSIONAL DRAWING Refer to Figures 2-1 through 2-3 for information on outline and mounting dimensions.

****** Page 17 ****** GUPS 2400A SECTION II INSTALLATION 2.7 Table INPUT/OUTPUT CONNECTORS 2-1 provides a listing of the GUPS 2400A input and output connectors. Table 2—1. GUPS 2400A Input/Output Connectors AC Input. Panel Connector Mating Connector Connector MS3102E 28-6P MS3106E 28-6S J2.- RS232 Panel Connector Mating Connector Connector 15 pin Sub—D Female 15 pin Sub-D Male AC Output Connector. Panel Connector Mating Connector MS3102E 20-19S MS3106E 20-19P U4 Extended Battery. Pack Connector Panel Connector Mating Connector Strain Relief AMP 350781-1 AMP 350715-1 AMP 350812-01

****** Page 18 ****** GUPS 2400A SECTION II – INSTALLATION o LUO Q W z n LUT a OOOOO@ 00 (50 0 < COW ****** Page 19 ****** GUPS 2400A SECTION II – INSTALLATION 2-5 ****** Page 20 ****** GUPS 2400A 6.92 CHASSIS BOTTOM SECTION II – INSTALLATION 4 SP e 3.875 1.730 21 m TOP COVER 1.730 4.5@–4 4 EQ SP @ 3.875 – 1550 USE .50 LONG HARDWARE MAXIMUM LOCATION ONLY) Figure 2-3. GUPS 2400A (Top and Side Views) ****** Page 21 ****** GUPS 2400A 2.8 WIRE GAUGE SELECTION SECTION II -I INSTALLATION The following guidelines assist in determining the optimum cable specification for the users power applications. These guidelines are equally applicable to both DC and low frequency AC (up to 450 Hz) power cabling. The same engineering rules apply whether going into or out of an electrical device. Thus, this guide applies equally to the input cable and output cable for this Elgar instrument and application loads. Power cables must be able to safely carry maximum load current without overheating or causing insulation destruction. It is important to everyday performance to minimize IR (voltage drop) loss within the cable. These losses have a direct effect on the quality of power delivered to and from instruments and corresponding loads. When specifying wire gauge, the operating temperature needs to be considered. Wire gauge current capability and insulation performance drops with the increased temperature developed within a cable bundle and with increased environmental temperature. Thus, short cables with generously derated gauge and insulation properties are recommended for power source applications. Avoid using published commercial utility wiring codes. These codes are designed for the internal wiring of homes and buildings and accommodate the safety factors of wiring loss, heat, breakdown insulation, aging, etc. However, these codes consider that up to 5% voltage drop is acceptable. Such a loss directly detracts from the quality performance specifications of this Elgar instrument. Frequently, these codes do not consider bundles of wire within a cable arrangement. In high performance applications, as in motor start-up and associated inrush/ transient currents, additional consideration is required. The cable wire gauge must consider peak voltages and currents which may be up to ten times the average values. An underrated wire gauge adds losses which alter the inrush characteristics of the application and thus the expected performance. Table 2—2 identifies popular ratings for DC and AC power source cable wire gauges. 2-7 ****** Page 22 ****** GUPS 2400A Table 2-2. 2-8 SECTION II INSTALLATION Recommended Wire Gauge Selection Guide Column Size (AWG) 14 12 10 1/0 Column Amperes (Maximum) 15 20 30 55 70 95 125 165 Column 3 Ohms/100. Feet (One. way) 0.257 0.162 0.102 0.064 0.043 0.025 0.015 0.010 0.006 Column 4 IR Diop/:100 Feet X Col. 3) 3.85 3.24 3.06 2.56 2.36 1.75 1.42 1.25 The following notes apply to Table 2—2 and to the power cable definition: 1. The above figures are based upon insulated copper conductors at 250C (77 OF), two current carrying conductors in the cable plus a safety (chassis) ground. Columns 3 and 4 refer to none way" ohms and IR drop of current carrying conductors (e.g., a 50—foot cable contains 100 feet of current carrying conductor). Determine which wire gauge for the application by knowing the expected peak load ) the maximum tolerated voltage loss (Vbss) within the cable, and the current (peak one way cable length. The formula below determines which ohms/100 feet entry is required from Column 3. Read the corresponding wire gauge from Column 1. (Column 3 value) = V x 0.02 x (cable length)] los peak Where: Column 3 value = Entry of the table above. Cable length = One way cable length in feet. Vloss = Maximum loss, in volts, permitted within cable. ****** Page 23 ****** GUPS 2400A SECTION II i- INSTALLATION 3. 4. 5. Special-case: Should the Vlogs requirement be very loose, Ipeak may exceed the maximum amperes (Column 2). In this case, the correct wire gauge is selected directly from the first two columns of the table. Example: A 20 ampere (Ipeak) circuit which may have a maximum 0.5 volt drop (Vloss) along its 15-foot cable (one way cable length) requires (by formula) a Column 3 resistance value of 0.083. This corresponds to wire gauge size 8 AWG. If the cable length was 10 feet, the Column 3 value would be 0.125 and the corresponding wire gauge would be 10 AWG. Aluminum wire is not recommended due to soft metal migration at the terminals which may cause long term (on the order of years) poor connections and oxidation. If used, increase the wire gauge by two sizes (e.g., specify 10 gauge aluminum instead of 14 gauge aluminum). Derate the above wire gauge (use a heavier gauge) for higher environmental temperatures since conductor resistance increases with temperature, Temperature Current Capability. 40 104 Derate the above wire gauge (use a heavier gauge) for an increased number of current carrying conductors. This offsets the thermal rise of bundled conductors. Number of Current Conductors Capability 3 to 6 Above 6 2-9 ****** Page 24 ****** GUPS 2400A SECTION II – INSTALLATION 6. 7. 8. 2-10 The preferred insulation material is application dependent. Elgar's recommendation is any flame retardant, heat resistant, moisture resistant thermoplastic insulation rated to a nominal 750C (167 OF). Voltage breakdown must exceed the combined effects of: e The rated output voltage; Transient voltages induced onto the conductors from any source; The differential voltage to other nearby conductors; and, Safety margins to accommodate degradations due to age, mechanical abrasion and insulation migration caused by bending and temperature. As frequency increases, the magnetic field of the current carrying conductors becomes more significant in terms of adverse coupling to adjacent electrical circuits. Use twisted pairs to help cancel these effects. Shielded twisted pairs are even better. Avoid close coupling with nearby cables by using separate cable runs for high power and low power cables. The above general values and recommendations should be reviewed, modified and amended, as necessary, for each application. Cables should be marked with appropriate safety WARNING decals as hazardous voltages may be present. ****** Page 25 ****** SECTION Ill OPERATION ****** Page 27 ****** SECTION Ill OPERATION GUPS 2400A 3.1 INTRODUCTION The controls and display for the Model GUPS 2400A are easily understood after a brief overview. 3.2 CONTROL AND INDICATOR PANEL Refer to Figure 3-1 for the location of the indicators and controls listed below. All controls and indicators for the GUPS 2400A are located on the Control and Indicator Panel. There are no operator adjustments inside the unit. There are five indicators and three pushbutton switches on the Control and Indicator Panel. In addition, there is an input circuit breaker located immediately below the Control and Indicator Panel. 32.1 3.2-1.1 Indicators AC INPUT This indicator is illuminated green when the AC input is within the normal line range, amber when near the extremes of the line range, and red when the AC line is outside the normal operating range. BATTERY This indicator is illuminated green when the internal battery is within its normal operating range, amber when nearing its low condition, and red when the a low battery condition has occurred. LOAD This indicator is illuminated green for normal load conditions, amber when approaching full load, and red when overloads occur. TEMP This indicator is illuminated green for normal operating temperatures and turns red during over temperature conditions, at which time the output power is disabled. TEST This indicator is normally illuminated green and flashes green during testing. indicator turns red if an internal test fails. The 3-1 ****** Page 28 ****** GUPS 2400A SECTION Ill OPERATION 3.2.2 Pushbutton Switches OUTPUT ON This pushbutton should be pressed when the inverter output voltage is required to power a load. If the pushbutton is not pressed, the inverter will normally be on although the output will be disconnected. There will be a delay of several seconds before the relay closes after pressing the pushbutton. TEST Pressing this pushbutton activates the internal test routine in the micro-processor. The test status is indicated by a blinking "test" indicator. The individual indicator status will be green to indicate the test passed and red to indicate a test failure. ALARM SILENCE Pressing this pushbutton de—activates the audible alarm but not the failure relays on the rear panel. This pushbutton will also reset an over-temperature condition. 3.2.3 Input Circuit Breaker The AC input circuit breaker is located below the Control and Indicator Panel. It should be turned to the ON (up) position for normal operation. The inverter will start if AC voltage is present. However, the output relay will remain open until the OUTPUT ON pushbutton is pressed. 3-2 ****** Page 29 ****** SECTION Ill – OPERATION GUPS 2400A Figure 3-1. AC INPUT BATTERY LOAD TEMP TEST 8 OUTPUT ON TEST ALARM SILENCE GUPS 2400A Control and Indicator Panel 3-3 ****** Page 30 ****** GUPS 2400A SECTION Ill OPERATION 3.3 CONNECTORS The GUPS 2400A has an input connector for AC input power; one connector for the 115V, 60 Hz output power; an RS232 connector that provides relay contacts for the alarm condition; and an additional connector for an optional extended battery. Each connector has an identifying number. Pin assignments are listed in Table 3—1. Table 3—1. GUPS 2400A Connector Pin Assignments Connector. ul, AC (INPUT Function 1 15/230 VAC, 45 — 450 Hz Input Neutral Chassis Ground Connector03, AC OUTPUT Function 115 VAC, 60 Hz Output Neutral to Chassis Ground Chassis Ground GROUND STUD Function Earth Ground Connector J2, POWER LOSS SIGNAL Pin Pin Pin Pin Function AC Failure Relay Contact (Normally Open) Low Battery Relay Contact (Normally Open) Relay Common .Connector J4, EXTENDED BATTERY PACK INPUT Pin Function +192V External Battery Battery Return Shield Ground Chassis Ground Not Used Not Used Screw ****** Page 31 ****** SECTION Ill – OPERATION GUPS 2400A 3.4 POWER ON SEQUENCE To power on the GUPS 2400A, perform the following: 2. Energize the input circuit breaker located below the Control and Indicator panel by placing the circuit breaker in the ON (up) position; wait 10 seconds. Press the OUTPUT ON pushbutton located on the Control and Indicator Panel. The output relay will close and connect the inverter to the load. The above two step sequence will start the power on process for the unit. If AC input power is available, an internal test routine will commence. After all the parameters are measured and determined to be good, the inverter will start up and the fan will operate. Pressing the OUTPUT ON pushbutton will then momentarily disable the inverter, allowing the output relay to close without hot—switching. The inverter is then re—started and ramped up into the load. If the AC line is not present when the input circuit breaker is closed, nothing will occur. However, by pressing the OUTPUT ON pushbutton, the unit will perform a full start up test routine as described above. The absence of AC power will be made known by the AC input indicator, audible alarm, and AC failure relay. The inverter will then start from the internal batteries and the output relay will close as before without hot—switching since the OUTPUT ON pushbutton has been pressed. Operation from any AC line voltage from 85 to 280 VAC is fully automatic with the processor determining the correct operation. No jumpers are required for range changes; however, since the range is latched into memory once it is determined, the circuit breaker should be shut off whenever an unknown AC voltage is to be connected so that the processor can measure the line and determine the proper range of operation. This does not apply to a line drop—out since the circuit will detect the loss of line and remeasure it when the line returns. Upon power on, the functionality of the GUPS is tested and, when ready, the Control and Indicator Panel LEDs will indicate the status of the test. At this point, the OUTPUT ON pushbutton can be pressed to provide power to the load. Upon loss of AC power the unit instantly switches to the battery only if the output relay has previously been closed. 3.5 BATTERY OPERATION When AC power is available but out of the operating range of the unit (i.e., 85-140 or 170—280 VAC), the unit can be started from the internal battery by simply pressing the OUTPUT ON pushbutton. Pressing this pushbutton will allow the battery to be connected to the unit in a power on sequence and inverter operation will follow with the relay closing into the load. When the batteries are nearly discharged, the Control and Indicator Panel LED will change to red and the low battery alarm will sound. 3-5 ****** Page 32 ****** SECTION Ill OPERATION GUPS 2400A When the battery is too low to operate, the unit will automatically shut off. When the AC power returns, the battery charger will resume operation and the batteries will begin to be recharged, Operating the inverter on the battery will result in reduced backup time unless the battery has been able to charge for 4 hours or more. CAUTION The unit: will not operate if .the battery pack •has been removed. 3.6 BATTERY INFORMATION, CARE AND HANDLING The battery used in the GUPS 2400A requires proper storage and recharging if it is to remain reliable. During storage, the self—discharge of the battery results in a sulfate coating that builds up on the plates. This coating reduces the effective surface area of the plates which reduces the available backup time. Allowing the batteries to self-discharge for too long a period of time may result in problems with recharging or in battery degradation. Storing the battery at reduced temperatures reduces the level of chemical activity, thus sulphation takes longer to occur. Reasonable storage times are listed in Table 3-2 for several different temperatures. Table 3-2. Battery Storage Times •Storage: Temperature OOC (320F) 100C (500F) 2000 (680F) 400C (1040F) Storage Time 20 Months 10 Months 5 Months 1.5 Months The batteries should be recharged for 72 hours after coming out of prolonged storage. ****** Page 33 ****** GUPS 2400A SECTION Ill OPERATION CAUTION Failure to recharge the batteries after the storage •time may. result in degradationé permanent battery 3.7 AUTOMATIC BATTERY EQUALIZATION Proper care and handling of the batteries is vital to the long term life that can be achieved in the system; therefore, the design of the battery charging system used in the GUPS 2400A includes several features to ensure long life. The float charge voltage is temperature compensated in the battery pack to achieve the correct charging rate regardless of the ambient or battery temperature. Periodic equalization of the charge time interval is accomplished with an internal real-time clock so that it only occurs after a deep discharge or on a 3—month interval. The microprocessor keeps track of the date and time interval internally even while the power is turned off. When power is reapplied to the unit the processor will check the time and date to determine if equalization is required. ****** Page 34 ****** GUPS 2400A SECTION Ill – OPERATION NOTES 3-8 ****** Page 35 ****** SECTION IV OPERATOR MAINTENANCE ****** Page 37 ****** GUPS 2400A SECTION – OPERATOR MAINTENANCE This section contains information on maintaining the GUPS 2400A. There are no adjustments accessible to the user. This maintenance section will deal with mechanical or general operational details only. WARNING Hazardous voltages. are present when operating this equipment. Read the USAFETY:" notices on page:ii poor: to•performjng Installation, operation, or. maintenance, 4.2 SERVICE INFORMATION Questions concerning the operation, repair or service of this instrument should be directed to the Elgar Repair Department, Elgar 9250 Brown Deer Road, San Diego, CA 92121- 2294. Include the model number and serial number in any correspondence concerning this instrument. DO NOT retum the unit to the factory without prior authorization. 4.3 SPARE AND REPAIR PARTS When ordering spare parts or repair parts, specify the part name, part number, component value and rating, and the Elgar part number, if available. If complete assemblies are required, contact the Elgar Repair Department. Specify the assembly part number as marked on the assembly and the unit model number, GUPS 2400A, when ordering. 4.4 PERIODIC MAINTENANCE The only periodic maintenance required for this instrument is to remove any dust and dirt accumulated during operation. The front panel fan filter should be removed and cleaned or replaced on a periodic basis. The amount of time between cleaning is dependent on the environment in which the unit is used. Dirt accumulation in the air filter can cause restricted air flow and subsequent overheating or reduced life on the internal components and batteries. ****** Page 38 ****** GUPS 2400A SECTION IV – OPERATOR MAINTENANCE 4.5 TROUBLESHOOTING In the event that problem arises during unit operation, the guidelines listed in Table 4—1 should be used to assist in determining the cause and to repair the unit as quickly as possible. ****** Page 39 ****** GUPS 2400A Table 4-1. Symptom No indicators are illuminated. All indicators are illuminated red. AC is not present on the output. The AC input indicator is illuminated red. The TEMP indicator is illuminated red. The BATTERY indicator is illuminated red. The inverter transfers to battery then quickly shuts down. The LOAD indicator is illuminated red. The LOAD indicator is not illuminated. The TEST indicator is blinking. The TEST indicator does not blink when the TEST pushbutton is pressed. SECTION – OPERATOR MAINTENANCE GUPS 2400A Troubleshooting Guide Probable. Cause The AC line voltage is not present. The battery module IS unplugged. The output relay is not closed. The AC input is either below 85V/170V or is above 140V/280V. The filter is clogged. 1) Low battery voltage; 2) open battery fuse; or 3) a defective battery. 1) The batteries are discharged; 2) the batteries are sulfated; or 3) the output relay is open. There is an overload on the output. The output relay is open. The TEST pushbutton has been pressed. The output relay is closed. Suggested Sotution Energize the input circuit breaker; press the OUTPUT ON pushbutton. Open the input circuit breaker, unplug the battery module then re-insert the battery module into the connector. Press the OUTPUT ON pushbutton. Ensure the AC line is within the proper operating range. Clean the filter, if required. 1) Recharge the battery; 2) replace the battery fuse; or 3) replace the battery, as required. 1) Allow a 4-hour recharge of the batteries; 2) allow a 72—hour recharge of the batteries; or 3) press the OUTPUT ON pushbutton, as required. Reduce the load. Press the OUTPUT ON pushbutton to close the output relay. TEST will only be performed if the relay is open. 4—3 ****** Page 40 ****** GUPS 2400A SECTION IV – OPERATOR MAINTENANCE NOTES








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