Form No. 003-2282 Rev G
32
procedure or unauthorized use of the Maintenance Bypass Mode, your
warranty will be void.
3.5.1.38. Press the Off
key pad for approx. 5 seconds, the LCD screen
shows as drawing B and the UPS output is in bypass mode.
3.5.1.39. Release the cover of the CAM Switch(Maintenance Bypass Switch) first,
then turn the CAM
Switch to “Bypass” mode, and verify that the right-
hand upper Corner of the LCD screen shows
.
3.5.1.40. Turn off the Utility and Bypass Input to the UPS. You can now proceed
with UPS maintenance.
3.5.1.41. To return the UPS to normal operating mode, turn off the Utility and
Bypass Input to the UPS. Set the CAM switch t
o “INV” mode. Fasten
the cover back into position and repeat 3.5.1.5 to 3.5.1.89. The UPS will
switch back to inverter mode.
3.5.1.42. CAUTION: It is required to go through 3.5.1.38 first, then go through
3.5.1.39 If you skip 3.5.1.38, the UPS will alert for 10 seconds to warn
that the procedure is abnormal, which may damage the UPS due to
uncertain utility status. The UPS will switch back to Inverter mode
immediately if you turn the CAM switch back to “INV”.
4.
Troubleshooting Guide
4.1.
Trouble Shooting
When the UPS malfunctions during operation, you may check the following:
a. Is the input and output power wiring correct?
b. Is the Utility voltage within the input window of the UPS?
In case problems or symptoms still exist, refer to the following tables. Should the
problem persist, contact your local distributor for help.
