UPS: OFFICE-RM 600 / 1000
Maintenance and
Service
OFFICE-RM Series
38
12.
Maintenance and service
You can expect a long service life and trouble-free operation for this product.
However, the service life and reliability of the UPS is largely determined by the
ambient conditions. The temperature and humidity in the device environment
must be within the specified limits. In addition, the area around the UPS should
be as clean and dust-free as possible.
With an optimal ambient temperature range of approx. 20-25°C, the typical
lifespan of the batteries is approx. 4 years. An increased ambient temperature
(greater than 25°C) will significantly reduce the lifespan of the batteries, thus
voiding the warranty on the batteries.
It should be checked at regular intervals (6-12 months) whether the remaining
autonomy time (bridging period) is sufficient for the intended purposes. If this is
no longer the case, the accumulators must be replaced.
12.1
Measuring the support time (battery time)
Before beginning with this procedure, it is obligatory that all open data files must
be secured. Also, inform all concerned employees of your intentions.
There are essentially two methods to measure the support time.
Method
A
is suitable for measuring the actual back-up duration whereby the
loads are required to be currentless at the end of the autonomy time. For this
purpose, force the UPS into the autonomous mode and measure the time until it
automatically shuts down.
Method B
allows for the determination of the remaining capacity after a defined
back-up period. Also for this method, first force the UPS into the autonomous
mode for a specific duration. In returning to the mains operation mode, note the
remaining capacity. Then calculate the autonomy duration through an estimation
(linear).
Please remember that after measuring the autonomous period, the accumulator
may be discharged. This means that the UPS device must remain in standard
mode for several hours (min. 6 h) to recharge the accumulator bank accordingly,
before this is again up to 70 % operational (capable of supporting.
