UPS MKD 1500 RT
Maintenance and Service
MKD series
68
10.
Maintenance and Service
You can assume a long service life and uninterrupted operation with minimum
maintenance for your UPS system.
The reliability of the UPS will however be determined primarily by the surround-
ing conditions. Temperature and moisture in the surroundings of the system
must be kept within the limits. Furthermore, the area around the UPS should
be as clean and free of dust as possible.
With an ideal surrounding temperature of 22 °C, the typical service life of the
accumulators amounts to approximately 4 years. By using special accumula-
tors, the service life can be significantly increased (approx. 8 - 10 years).
At regular intervals (6 - 12 months), you should check that the remaining bridg-
ing period is sufficient for the intended purposes. If this is not the case, the ac-
cumulators must be exchanged.
10.1
Measurement of the Bridging Period
(Support Period)
Before you begin with this procedure, you should be sure to make a
backup of all open data records. Also inform all involved employees.
To measure the support length, there are primarily two methods.
Method a)
is suited for measuring the actual support period, whereby the loads will
inevitably become powerless at the end of the bridging period.
Method b)
permits the determination of the remaining capacity after a defined sup-
port period. In the process, the loads usually do not become powerless.
To apply one of the named methods, force the UPS into support opera-
tion by simulating a mains failure (e.g. trigger building's security system).
Do not remove the power cables under any circumstances, since then the
protective conductor is separated. After completing the measurement,
switch on the circuit breaker again and start the UPS as usual with the
ON key.