KBR multicomp F144-3PH
V2.00
46
19837_EDEBD
A0227-1816-1_EN
Maintenance
6. System and safety devices maintenance
In order to ensure proper function and a long service life of your system, per-
form the following checks after commissioning and subsequently once a year!
Check and retighten all connections. Screw connections may become loose
at the beginning due to thermal stress.
Check fuses, safety devices and switching equipment. Contactors are wearing
parts. If the contactor is intact, switching must take place without excessive
formation of sparks.
Check the control behavior in automatic mode.
Examine the cool air proportions (ventilators, temperature monitoring func-
tion):
- Temperature relay of controller switches ventilators on at 28°C,
- Temperature monitoring switches system off via controller at 48°C.
Clean the filter mats, depending on how dirty they are.
Visual inspection of capacitors for leaks (a reliable encapsulation of the
dielectric is a prerequisite for the long life of the capacitor).
Examine the current input and capacitor terminal voltage every three
months.
Inspect the reactive energy consumption using the electricity bill.
Limit temperatures:
Valid for systems in cabinets:
+ 35° C in a 24-hour average
+ 20° C in annual average
+ 40° C highest value, briefly
- 10° C lowest value
The above information applies particularly to reactor-connected systems.
The input current and the temperature of these systems must be checked
regularly so that an overload on the capacitors can be detected at an early
stage. A higher input current can be caused by an increasing proportion of
harmonics or by a change in capacitance of capacitors.
