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| 10.0 Maintenance
10.6 Replacing the Power Module on S4K6U10KC
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CAUTION
The UPS must be switched to manual bypass before replacing the power module.
NOTICE:
During the procedure, the connected load will not be protected from power disturbances, such as spikes, sags,
and failure.
To remove the UPS power module without shutting off power to the connected load:
1.
Place the UPS on internal bypass. This may be done by any of the three following methods:
a.
Press the Off button on the front panel one time.
b.
Slide the bracket away from the manual bypass switch on the rear of the UPS; this requires loosening the captive
screw and sliding the bracket away from the manual bypass switch.
c.
remove the front grille covering the power module.
2.
Move the manual bypass breaker on the rear of the UPS to the BYPASS position; this requires loosening the captive
screw and sliding the bracket away from the manual bypass switch (see Figure 7).
3.
Open the input circuit breaker on the rear of the UPS (see Figure 7).
4.
Open the output circuit breaker on the rear of the UPS (see Figure 7).
5.
remove the top two front metal bezels by pulling them forward.
6.
remove the power module cover grille and the battery cover grille.
7.
Disconnect the slotted battery connectors from the internal battery packs.
8.
if additional external batteries are used, disconnect the two external battery connectors.
9.
Slide power module restraint lever up out of the locked position.
10.
Slide the power module out the front, supporting its weight as it is withdrawn.
Power module
Figure 31: Removing the power module from S4K6U10KC
