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Installation and operating instructions Wilo-CC-System
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9 Maintenance
Prior to maintenance or repair work switch off
the installation and secure against unauthorised
switching.
The control cubicle must be kept clean. Control
cubicle and fan are to be cleaned if dirty. The filter
mats of the fans must be inspected, cleaned or
replaced if dirty or clogged.
From motorpowers of 5,5 kW on, the contactors
should be inspected regularly on the loss of con-
tact material. If there is to much material lost, the
contactors/contacts must be replaced.
The state of charge of the real time clock buffer
battery is supervised by the system and, if neces-
sary, signalled. A replacing cyclus from 12 months
is recommended. Replace the battery in the CPU
as shown below.
10 Faults, causes and rectification
10.1 Fault displaying and acknowledgement
If any fault occurs, the background light of the
display changes it's colour into red, the collective
failure signal is activated and in the menue 3.2 the
fault is displayed with codenumber and alarmtext.
Systems with optional remote diagnosis send a
message to the designated receiver(s).
The acknowlegement can be done in menue 3.2
with the softkey "RESET" or remote.
If the fault causal was rectified, the backlight of
the display changes into green. If the fault causal
was not rectified, the backlight of the display
changes into orange.
A faulty pump is displayed on the screen with a
flashing pump symbol.
10.2 Error memory for faults
The panel provides a fault memory working with
the FIFO-principle (First In First OUT). Each fault is
stored with a timestamp (Date / Time).In maxi-
mum 35 faults can be stored.
The alramlist can be called in menue 3.2 via the
softkey »List«. With the softkeys »+« and »-«
browsing is enabled.
Table 1 shows a list of all fault signals.
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