Specifications

6.4 UPS (Uninterruptible Power Supply)

See the UPS Installation / Operation Manual from the UPS manufacturer.

6.5 Troubleshooting Chart

Problem Possible Cause Solution

Connected loads not operating Output circuit breakers turned off Turn on the output breakers

during normal operation (See Section 6.3)

Connected loads not operating UPS turned off Verify UPS is turned on

during loss of power Bypass switch in “bypass” mode Move Bypass switch to “normal” mode

(See Section 6.1)

Input circuit breaker trips Overloaded system Remove excess load / reset breaker

(See Section 6.3)

UPS output circuit breaker trips Overloaded system Remove excess load / reset breaker

(See UPS operation manual)

Output circuit breaker trips Overloaded circuit Remove excess load / reset breaker

(See Section 6.3)

Front display is in alarm Input SPD Module is bad Replace Input SPD module

(See Section 5.4) (See Section 6.6)

Front display is off Output SPD Fuse-F1 is bad Replace output SPD Fuse F-1

(See Section 5.4) (See Section 6.6)

Input status Relay (TB-2) Fuse F-3 is bad Replace Fuse F-3

is not operating (See Section 6.6) (See Section 6.6)

Output status Relay (TB-1) Fuse F-2 is bad Replace Fuse F-2

is not operating (See Section 6.6) (See Section 6.6)