Bypass Fan Failure - Tripp Lite SU60KX Manual

5 Troubleshooting (continued)
5.2 Troubleshooting Flow Charts (continued)

5.2.12 "BYPASS FAN FAILURE"

Replace the S board
Note (1): For the location of the NH-SYS-P and/or NH-SYS-M board, turn to section 1.5. To replace the NHS-SYS-M board, remove the EEPROM
chip from the old NHS-SYS-M board and insert it into the new one.
Note (2): Fan A is the main fan for the bypass static switch (Figure 5.2.12b).
Note (3): Fan B is the redundancy fan for the bypass static switch (Figure 5-16).
Note (4): Fan C is the main fan for the fi lter (Figure 5.2.12c).
Fig 5.2.12b
Start
N
Is the UPS
in bypass mode?
Y
Is
N
fan A spinning?
Y
N
(1)
or M board
END
N
Is
fan C spinning?
Y
N
Replace the P board or
(1)
M board
Is
N
fan B spinning?
Y
Fan A failed
(2 )
Replace fan A
Do fans
work normally after
restarting UPS?
Y
Fig 5.2.12a
108
Fan C failed
(4)
Replace fan C
Does fan C
Y
work normally after
restarting UPS?
Fan A and B failed
(2)
Replace fan A and
(3)
fan B
Fig 5.2.12c