Tripp Lite SU60KX Manual

A SERVICE OF

next previous

103

PRELIMINARY

5.2 Troubleshooting Flow Charts (continued)

5.2.4 “BYPASS SEQUENCE NOK”

5.2.5 “BYPASS STATIC SWITCH OVER TEMPERATURE”

5 Troubleshooting (continued)

Note (1): The fans are installed at the heat-sink of the bypass static switch. (See section 1.5)

Note (2): The NTC is mounted on the heat-sink of bypass static switch (Figure 5.2.5b). Remove wire #35 and unscrew the NTC.

Fig 5.2.4a

Fig 5.2.5a

Fig 5.2.5b

Start

Is the bypass

input external wiring

correct?

Correct the wiring

Is the bypass input

source phase correct?

N

Y

END

Start

Is the UPS loading

too high?

Temperature sensing

circuit has failed.

Replace the NTC

(2)

Y

Reduce loading

N

Have the

fans

(1)

failed?

Y

Replace the fan

N

END