English
NeTYS 400-1000 VA Product Manual
6. MAINTENANCE
6.1.
REMEDIES FOR MINOR PROBLEMS
This section examines some of most likely problems that can compromise correct operation of the UPS,
attempting to solve them and identifying the possible causes and remedies.
!
T
HE
UPS
INTERNALLY GENERATES HAZARDOUS ELECTRICAL VOLTAGES
. A
LL MAINTENANCE
MUST BE PERFORMED SOLELY AND EXCLUSIVELY BY AUTHORIZED PERSONNEL
.
If you have difficulty in getting the UPS to work, the reason may be among those listed below. For any other
problem, you are advised to get in touch with your dealer or service organisation directly. For quick and
effective action, when you call it is important to give precise details of the defect, the model number and the
manufacturing serial number that can be found on the conformance and inspection certificate or on the data
plate on the bottom of the UPS.
PROBLEM
CAUSE
SOLUTION
The UPS works in battery mode even if
mains power is available
- Poor connection to the input
mains.
-The mains voltage is
out of range
-Input protection triggered
(blown fuse or automatic
switch)
-Check the connection of the cable
to the UPS and to the mains outlet.
-No solution because mode of
operation is correct.
-Replace the input fuse with another
of the same type or reset the
automatic switch.
Back-up time shorter than expected
-Batteries not fully charged.
-Batteries not working
properly.
-Leave the batteries to charge for 8
hours consecutively.
-Have the batteries replaced by
authorised personnel.
The UPS stalls/goes into overload
alarm
Overload on the load line.
Check that the load applied is not
greater than the maximum permitted
or reduce the load power
requirement.
IF THE EQUIPMENT IS TO BE LEFT IDLE FOR A LONG PERIOD
,
WAIT FOR THE BATTERIES TO CHARGE
FULLY BEFORE SWITCHING OFF
.
WHILE THE UPS IS LEFT IDLE
,
MAKE SURE THAT THE BATTERIES ARE
RECHARGED FOR
24
HOURS AT LEAST ONCE EVERY
4
WEEKS
.
!
SECTION 1
10
