Page 3 - TABLE OF CONTENTS
i TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 6 - GLOSSARY OF SYMBOLS
2 GLOSSARY OF SYMBOLS Risk of Electrical Shock Indicates Warning or Caution Followed by Important Instructions AC Input AC Output Requests the user to consult the manual Equipment Grounding Conductor ON OFF i
Page 7 - GENERAL DESCRIPTION; YSTEM; Features; Options
3 GENERAL DESCRIPTION Congratulations on your purchase of Liebert’s Nfinity™ Maintenance Bypass Cabinet with Configurable Output Distribution. As with every Liebert product, we stand behind our quality. If you have any questions concerning this Maintenance Bypass Cabinet, please feel free to contact...
Page 8 - FRONT VIEW; Bypass availability
4 FRONT VIEW Bypass availability indicator (amber) Cooling fans(transformer models only) UPS input power present (amber) UPS output availability indicator (green) Bypass switch (SW1) UPS input switch (SW2) Support bracket Output breaker (CB1)
Page 11 - MODES OF OPERATION; UPS M; ODE
7 MODES OF OPERATION The Nfinity Maintenance Bypass Cabinet is designed to operate in the following modes: UPS M ODE While the Nfinity Maintenance Bypass Cabinet is in the UPS Mode, the UPS is supplying the connected load with continuous high quality AC power. In this mode of operation, the load is ...
Page 12 - MAJOR COMPONENTS; YPASS; User Selectable Output Distribution
8 MAJOR COMPONENTS The following is a general description of each component and its functions. Please review this section carefully, as it will give you a better understanding as to how the Nfinity Maintenance Bypass Cabinet operates. B YPASS S WITCH The Bypass Switch allows easy and rapid transfer ...
Page 13 - PREPARATION
9 PREPARATION These installation instructions provide all the information needed for positioning the Nfinity Maintenance Bypass Cabinet (including environmental requirements) and for connecting the input and output power cables. I NSPECTION Upon receiving the Nfinity Maintenance Bypass Cabinet, exam...
Page 14 - UNLOADING; NLOADING; CAUTION
10 UNLOADING U NLOADING THE M AINTENANCE B YPASS C ABINET 1. Once the Maintenance Bypass Cabinet is near the desired operating location, remove the cardboard cover. 2. Use a 1/2" (13mm) wrench to remove the eight mounting bolts (four per bracket) from the pallet brackets. Remove mounting bracket...
Page 15 - TATIONARY
11 5. Once the Maintenance Bypass Cabinet is in the desired location, adjust the leveling feet to secure its position. S TATIONARY M OUNTING Additional stability can be added by bolting the mounting brackets (used in shipping) to the floor. For greater stability, use a higher-grade bolt. Refer to th...
Page 16 - CABLE INSTALLATION; IRING; Preparing Internal Wiring; WARNING
12 CABLE INSTALLATION W IRING P REPARATION Be sure that the unit is not connected to any AC mains power source or UPS before installing any wiring to this unit. This Maintenance Bypass Cabinet should be installed by a qualified / certified electrician. Preparing Internal Wiring The Maintenance Bypas...
Page 17 - REPO C
13 R EMOVING THE C OVER P LATES On the back of the Maintenance Bypass Cabinet, cover plates are over the input and output terminals. Remove these using a phillips screwdriver. Keep screws and plates to one side. P OWER C ABLE I NSTALLATION Refer to the chart below when selecting cables: NOTES: If an...
Page 20 - UPS to Maintenance Bypass With Transformer
16 UPS to Maintenance Bypass With Transformer G TB1 TB2 G TB3 TB4 1 2 3 TB5 TB6 L1L2 L1L2 L1 L2 G 1 2 3 4 1234 120 208 240 120 L1 L2 G 1 2 3 1 2 3 4 5 GEC TB3 TB2 TB1 Flexible conduit 208 240 NFINITY UPS NFINITY MAINTENANCE BYPASS CABINET WITH TRANSFORMER Input 2 Input 1 See Nfinity user manual for ...
Page 21 - UPS to Maintenance Bypass Without Transformer
17 UPS to Maintenance Bypass Without Transformer G TB1 TB2 G TB3 TB4 TB5 L1 L2 L1L2 L1 L2 G 1 2 3 4 1234 120 208 240 120 L1 L2 G 1 2 3 1 2 3 4 5 GEC TB3 TB2 TB1 Flexible conduit NFINITY UPS NFINITY MAINTENANCE BYPASS CABINET WITHOUT TRANSFORMER Input 2 Input 1 N N See Nfinity user manual for details...
Page 22 - OPERATING PROCEDURES; UPS
18 OPERATING PROCEDURES S TART -U P AND I NITIALIZATION Follow these steps in order to start up the Nfinity UPS while connected to the Nfinity Maintenance Bypass.1. Set Maintenance Bypass switch (SW1) to UPS position on Maintenance Bypass Cabinet. 2. Close UPS source switch (SW2).3. Close output cir...
Page 23 - MAINTENANCE
19 MAINTENANCE P ROPER C ARE Keeping your Liebert Nfinity Maintenance Bypass Cabinet operating properly is imperative to optimal performance and life of the unit. It is recommended that a certified technician perform preventive and corrective maintenance. Liebert Global Services (LGS) is dedicated t...
Page 24 - SPECIFICATIONS
20 SPECIFICATIONS General & Environmental Rating Unit Rating kVA Models NMB1x and NMB4x = 18 Models NMB5x and NMB8x = 20 Amps Models NMB1x and NMB4x = 100 max Models NMB5x and NMB8x = 125 max Compliant Safety Standards UL 1778, c-UL Mechanical Dimensions Width In (mm) 9.5 (241) Depth 26.5 (700) ...
Page 26 - OWER; Maintenance Bypass Cabinet for Nfinity; SER
The Company Behind the Products With over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its founding in 1965, Liebert hasdeveloped a complete range of support andprotection systems for sensitive electronics: • Environmental systems—close-co...
