Attaching the tower conversion stands

35

Continuing the ERM installation

37

Installing the extension bars (if included)

38

Connecting and securing the power cords

39

UPS operations

40

Modes of operation

40

Standby mode

40

Operate mode

40

Configure mode

41

Battery mode

41

Auto-Bypass mode

41

Operating the UPS front panel controls

41

Configuring the UPS

42

Initiating a self-test

43

Silencing an audible alarm

44

Verifying the REPO port connection

44

Powering down the UPS

44

Maintenance

45

Removing the UPS front bezel

45

Removing the ERM front bezel

45

Replacing the batteries

45

Important battery safety information

46

Battery care and storage guidelines

46

Determining when to replace batteries

46

Obtaining new batteries

47

UPS battery replacement procedure

47

Testing the new battery module

48

Replacing the UPS

49

Replacing the ERM

49

Replacing the UPS option card

49

Updating the UPS firmware

50

Configuring a USB to serial converter

50

Reassigning the USB COM ports

51

Power management

53

Power Protector software

53

Troubleshooting

55

LED troubleshooting

55

UPS is in Auto-Bypass mode

56

UPS is in Converter Off mode

57

General alarm condition

57

Bypass is out of range

58

Battery condition

58

UPS is on battery

58

Input voltage is out of range

58

Overtemperature condition

59

Internal UPS fault condition

59

REPO condition

59

Site wiring condition

59

Overload condition

59

Checksum failure error

60

UPS does not start

60

Contents

4

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HP Accessory 651176-002 manual Power management