CBM 250 User Manual

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UPS troubleshooting:
NOTE: Troubleshooting procedures may differ depending on UPS model.
Back-UPS troubleshooting
UPS will not turn on
(lamp within power I/O switch is not illuminated), but beeps when power I/O switch
is on
 Line cord plug is loose. Check fitting of line cord plug.
 Rear panel circuit breaker is tripped.
Circuit breaker is tripped when button is extended. Unplug excessive loads
and reset breaker (press button).
 Dead wall socket.
Check wall socket with a table lamp.
UPS
operates normally, but I/O switch not illuminated)
 Lamp inside the I/O switch is blown.
You may continue to use the UPS. It is recommended that the UPS is
serviced.
The UPS operates normally, but the site wiring fault indicator is lit
 Building wiring error such as missing ground, hot and neutral polarity
reversal, or overloaded neutral wiring.
A qualified electrician should be summoned to correct the building wiring.
The UPS will not provide rated noise and surge suppression with incorrect
building wiring.
 "Cheater" plug or adapter installed onto line cord plug (ground not
connected).
Plug the UPS into 2 pole, 3 wire grounding outlet only.
UPS
occasionally emits
a
beep, compu
ter equipment operates normally
 The UPS is briefly transferring your equipment to its alternate power
source due to utility voltage sags or spikes.
This operation is normal. The UPS is protecting your computer equipment
from abnormal utility voltages. If the audible alarm becomes annoying, refer
to Option Switch ‘AUDIO SETTING’ section to mute the beeping sound.
UPS
emits
a
beep very often, more
than once or twice and hour. Compu
ter equipment operates normally
 Utility voltage is distorted or branch circuits are heavily loaded.
Have your line voltage checked by an electrician. Operating your UPS from
an outlet which is wired to a different branch fuse or circuit breaker may
help. Refer to Option Switch ‘UTILITY TRANSFER VOLTAGE’ section and
lower the transfer voltage if it is known that your equipment will operate
normally at that voltage.
UPS emits loud tone. Power I/O switch is on but computer equipment is not powered.
UPS’s rear panel circuit breaker is tripped (button is extended). Normal utility voltages are known to be present
 UPS has shut down due to severe overload.
Turn off UPS and unplug excessive loads. Laser printers will overload the
UPS and should be plugged into a quality surge suppressor. Once overload
is removed, reset the circuit breaker (press the button).
Problem:
Solution
:

CBM 250 Specifications

General

Brand	CBM
Model	250
Category	UPS
Language	English