Ups service manual pdf download

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Thank you for being so service oriented. Your technical assistance is among the best I have ever experienced. Jeff, the technician who assisted me with an installation issue was knowledgeable, fast, efficient, and friendly. Skip to content. For data sheets and images please visit this link. UPS User Manuals. Name Size Modified Ascending Descending. Thumbnails view List view No options Battery Pack User Manuals.

Disconnect the PCBs black wire from the circuit breaker tab figure 5. Remove the center screw that secures the PCB to the chassis figure 5. Slide both the PCB and rear panel back and away from the rest of the unit. Remove the two 2 screws that secure the rear of the PCB to the rear panel figure 5. Remove the two 2 screws that secure the rear panel to the base of the chassis figure 5.

Remove the hypot tab screw on the rear panel. Remove the power outlets white wire from the PCBs J6 tab Remove the power outlets black wire from the PCBs J2 tab. For UPSs with the rear panel quick-disconnect Anderson connector plug, remove the two 2 screws that secure the connector to the rear panel figure 5. Place the PCB on top of the rear panel. Replace the screws that secure the PCB to the rear panel figure 5. Connect the power outlets white wire to the PCBs J6 tab. Connect the power outlets black wire to the PCBs J2 tab.

Secure the hypot tap screw to the chassis. Place the rear panel and PCB back onto the chassis. Reconnect the output transformer's connector to the PCB tab labeled J5.

Insert the display PCB into the bezel and snap the bezel back in place at the front of the unit figure 5. Reconnect the black primary output transformer wire to heatsink 1 figure 5. Reconnect the white primary output transformer wire to heatsink 4 figure 5. Replace the two 2 screws that secure the front of the PCB to the chassis as well as the center screw figure 5. Replace the two 2 screws that secure the rear panel to chassis figure 5.

Note: The outlets ground screw must be facing downward. The functional test is broken down into the following sections; Site wiring fault detector test, Output voltage test, Full load test On-battery, Battery reserve time test, Transfer level test, Battery charger test, and the Computer interface port test.

The site wiring fault indicator is a red LED on the rear panel. This LED will illuminate when the unit is plugged into an improperly wired outlet. The LED will illuminate when any of the following wiring faults are present: 1. An open or high resistance ground. Reversed polarity of the hot and neutral lines. An overloaded neutral circuit is present. A computer load should be present at the time of testing.

Turn Off the variac. The UPS should immediately transfer to backup power. Using a voltmeter and oscilloscope, monitor the UPS's output voltage and frequency. If the sine wave is heavily distorted or the output voltage is inaccurate, the UPS should be serviced. Prior to performing this test, the unit should be charged up. Time to charge will vary depending on the current state of the batteries.

Apply the correct size load to the UPS. Refer to table 6. Using a voltmeter, monitor the UPSs output voltage. The UPS should remain powered and the output should remain the same as step 6 above. While the UPS is operating off of the utility voltage, increase the load by approximately 75 Watts.

Plugging a light bulb into the UPS can do this. After 4 seconds, the overload light should come On and the unit should emit a constant tone until the overload is removed. If the UPS fails to support the load or recognize the overload, then it should be serviced. SU min 1. SU min 2. SU min 4. Using a stopwatch, time how long the UPS maintains power to the load. If the UPS fails to support the load for the expected runtime, the batteries may need to be replaced. If the batteries are new and have drained prematurely during normal operations it may be an indication that there may be a problem with the charging circuit and the UPS should be serviced.

Slowly turn down the variac and monitor the UPS's input voltage. Repeat this procedure several times to ensure accurate results. If the UPS does not transfer properly, then the calibration of the unit is recommended. Otherwise, the UPS should be serviced. Slowly turn up the variac and monitor the UPSs input voltage. For the , remove the two 2 screws from the battery door figure 5. Swing the battery door open and gently slide the battery out of the UPS. Remove the units black wire from the negative battery terminal and remove the units red wire from the positive battery terminal.

Note: for the , disconnect the batterys Anderson connector plug. Remove the battery. The DC voltage should be at Should the battery charger voltage fail to meet the provided range, then the unit should be serviced. Connect the red wire from the unit to the positive battery terminal. Connect the black wire from the unit to the negative battery terminal. Gently slide battery into chassis. Swing battery door closed and replace the two 2 screws that secure the battery door to the chassis. A detailed description of the port can be found in section 4.

The following steps should be performed to ensure the interface port is working properly. Using a multimeter, measure the voltage between the interface port's pin 2 and 9. Shorting pin 1 to pin 2 can do this. A metal paper clip can be used to short the two pins. The UPS should go into sleep mode. The lights in front of the unit will scroll.

Remove the short between pin 1 and pin 2. Plug the UPS back into the variac. Now, the UPS should power back up. Connect a 48 k 5 k resistor between pins 3 and 8. Using a multimeter, measure the DC voltage drop across pin 3 and ground. The resistor should still be connected to pins 3 and 8. Unplug the UPS from the utility line. Using a multimeter, measure the DC voltage between pin 3 and ground.

The voltage should be less than 0. Connect a 48 k 5 k resistor between pins 5 and 8. Using a multimeter, measure the DC voltage drop between pin 5 and ground. The voltage drop should be greater than 19VDC. The resistor should still be connected between pin 5 and 8. Unplug the UPS from the utility line and allow it to run On battery until it reaches the low battery state.

While the UPS is in low battery state, use a multimeter to measure the DC voltage between pin 5 and ground. This section outlines the most common problems that may be encountered with a UPS. The format of this section is as follows: I. Symptom - a brief description of a problem encountered. Likely cause - the possible reasons that may have caused the problem to occur. Probable solution - the probable solutions to each of the likely causes. See comments at the bottom of the table pertaining to batteries.

Typical failures when F3 is blown. F3 opens upon turn-on attempt; 24v short present. See comments at the bottom of the table pertaining to bias voltages.

Replace Q5. Replace ribbon cable and check F3 and Q5. Program wrong setting. No input at power cord. Display pcb ribbon cable may be cut, shorting DC voltage to chassis blowing F3 and shorting Q5. Verify site power at receptacle. With power removed, check the circuit breaker with an ohm meter. A bad circuit breaker will often show resistance and must be replaced. Verify continuity from power cord to hot-in tab at pcb. Line sense transformer bad. Large capacitor fell off of the pcb.

Capacitor leaks. Relay welded. Optocoupler failed. Leaky diode. Load exceeds UPS parameters. Output sense transformer open. Current transformer failure. IC failure. Additional comments: Check components in AC-in path ensuring leads are through the pcb.

L1,L2, and T1 are usually suspect. Resolder C17 onto the pcb. Replace C44 or C Replace relay. Replace IC3. Replace D Reduce load. Overloads typically originate in the inverter section a complex circuit. Drivers and fets as well as the power transformer may be bad also. Check float voltage and verify battery constants 4, 5, 6, and 0. The 0 constant is critical for it will change per design when the batteries are discharged. Always check this constant after battery replacement. The reset circuit is composed of several components which could be the culprit in a reset failure.

IC13 may be corrupted and need replacing if so, the UPS will have to be fully reprogrammed. Additional information pertinent to table above. Caution: Batteries can leak or swell, exposing hazardous gases and acid, when exposed to inadequate environments such as poor ventilated areas or excessively hot room temperatures.