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90 Maintenance
Maintenance task/object
Checking coolant quality
Coolant draining and replacement
ABB cooling unit (if present)
Pump and motor
Expansion tank
Inspection of expansion tank air pressure
External circuit of main heat exchanger
(temperature/flow/pressure)
Cooling fan and fan control
Cooling fans 230 V AC 50/60 Hz and 24 V DC
Cooling fans 115 V AC 50/60 Hz
Frame R7i: Internal cooling fan for circuit
boards
CIO module for fan control (230 V AC)
CIO module for fan control (115 V AC)
Aging
Control unit battery
Control panel battery
Cabinet auxiliary power supplies
Buffer module 24 V DC (+F276 Ride-through
function)
Connections and environment
Quality of supply voltage
Spare parts
Spare parts
DC circuit capacitor reforming (spare mod-
ules and spare capacitors)
Inspections by user
Checking tightness of cable and busbar ter-
minals. Tightening if needed.
Checking ambient conditions (dustiness,
corrosion, temperature)
Checking coolant pipe connections
Other
ABB SACE main circuit breaker maintenance
ABB contactors maintenance
Functional safety
Safety function test
Safety component expiry (Mission time, T
1) To replace CIO module or reset fan counters, see
(3AXD50000126880
[English]).
0
1
2
3
P
P
I
1)
1)
P
P
P
I
I
I
P
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
See the maintenance information of the safety function.
)
M
CIO-01 I/O module for distributed I/O bus control user's manual
Years from start-up
4
5
6
7
8
9
P
P
P
R
R
R
P
P
P
I
I
I
R
R
R
R
I/R
R
R
R
P
P
P
P
P
P
I
I
I
I
I
I
P
P
P
P
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
20 years
3AXD10000578918 rev S
10
11
12
...
P
P
R
P
P
I
I
R
R
R
R
R
P
P
P
I
I
I
I
P
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
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