Tripp Lite SU80KX, SU20KX Manual Bypass Procedure Single UPS, Shutdown Procedure Single UPS

9 – Start-Up, Shutdown and Bypass (continued)

9-5 Manual Bypass Procedure (Single UPS)

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Warning: Placing the UPS system in manual bypass will disable the inverter and power all loads from the manual bypass (reserve) source, but the UPS system will still be energized. Before performing maintenance or repair on the UPS system, shut down and de-energize the 2 UPS system completely by following the steps in Section 9-6. Although connected equipment loads will be powered by the bypass (reserve) power source, they will not receive battery backup in the event of a utility power failure.

•1 If the UPS is in NORMAL mode (green LED ON, LCD displays “Load Protected – On Line Mode”), then you must stop the inverter by pressing and holding the red OFF (“O”) button A until the UPS beeps, then release the button and answer “YES” to the question “Transfer to Bypass Mode?”. The UPS should transfer to Bypass.

•2 Confirm the UPS is in BYPASS mode (amber Bypass LED is ON; LCD displays “Load Unprotected – On Auto Bypass”). Do not proceed if it is not in BYPASS mode.

•3 Turn OFF the MAIN INPUT circuit breaker Q1.

•4 Wait until the Power Module fans turn OFF (this may take a minute or two), then turn OFF the BATTERY BREAKER. On the 40K unit, the BATTERY BREAKER (for the internal battery) is on the back of the UPS; on the 60K and 80K units, the BATTERY BREAKER is on the back of the matching battery cabinet. Note: Some external battery cabinets may have the BATTERY BREAKER behind the front door or elsewhere.

•5 Turn ON the MANUAL BYPASS circuit breaker Q3. The LCD will display “Load Unprotected – On Manual Bypass” and you will hear an audible alarm.

•6 Turn OFF the OUTPUT circuit breaker Q4.

•7 Turn OFF the BYPASS INPUT circuit breaker Q2. The unit’s LCD will go blank after a few seconds.

•8 The critical load is now supported by unconditioned utility power.

			A	3
				4
1
6	5	7	3	5
Q4	Q3	Q2	Q1
Output	Manual	Bypass	Main	6
3-7	Bypass	Input	Input
				7
				8

9-6 Shutdown Procedure (Single UPS)

Warning: The UPS system shutdown procedure will eliminate the AC power output for all loads. Before shutdown, confirm that all loads	9
are turned off or place the UPS system in manual bypass mode to keep loads powered by the reserve (bypass) power source.

•1 If the UPS is in NORMAL mode (green LED ON, LCD displays “Load Protected-On Line Mode”), then you must stop the inverter by pressing and holding the red OFF button A until the UPS beeps, then release the button. The UPS should transfer to Bypass.

•2 Confirm the UPS is in BYPASS (amber Bypass LED is ON; LCD displays “Load Unprotected-On Auto Bypass”). Do not proceed if it is not on BYPASS.

•3 Turn OFF the OUTPUT circuit breaker Q4.

•4 Turn OFF the MAIN INPUT circuit breaker Q1.

•5 Turn OFF the BYPASS UNIT circuit breaker Q2.

•6 Wait until the Power Module fans power OFF and the LCD goes blank (this may take a minute or two), then turn OFF the BATTERY BREAKER (on the SU20KX and SU40KX units, the BATTERY BREAKER is on the back of the UPS; on the SU60KX and SU80KX units, the BATTERY BREAKER is on the back of the battery cabinet).

Note: If the UPS system remains off for an extended period of time, it should be turned on periodically to allow the batteries to recharge. The UPS system should be turned on and the batteries should be recharged at least one uninterrupted 24-hour period every 3 months. Failure to recharge the batteries periodically may cause irreversible battery damage.

		10
1	A	11

3		5	4	12
Q4	Q3	Q2	Q1
Output	Manual	Bypass	Main	13
2	Bypass	Input	Input

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