ABB DCS880 - 6 Years Preventive Maintenance

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Preventive Maintenance
3ADW000488R0101 DCS880 Service manual e a
6 years preventive maintenance
Following additional actions have to take place:
− Replace the cooling fans of units H5 and H6:
− Exchange cooling fan size H5.
− Exchange cooling fan size H6.
The manufacturer’s estimation for the operational time of the cooling fans is:
− R2E250-RB 40,000 hours at 40°C.
The mayor problem is the failure of the bearings. The cooling fans are used in:
DCS880-S0b-1190-dd
H5
R2E250-RB
230 V
DCS880-S0b-0900-dd ...
DCS880-S0b-2000-dd
H6
Aging of the components result in:
− Increased vibration due to the imbalance of the cooling fan (can last for several months).
− Increased temperature due to the stopped cooling fan (drive trips with overtemperature).
− Replace the cooling fans of units H1 … H4.
− Exchange the cooling fan size H1 (one fan).
− Exchange the cooling fan sizes H2 … H3 (two fans).
− Exchange the cooling fan size H3 (four fans).
− Exchange the cooling fan size H4.
The manufacturer’s estimation for the operational time of the classic cooling fans is:
− 3110UL: 70,000 hours at 25°.
− AFB122: 100,000 hours at 25°.
− W2E200: 45,000 hours at 60°C.
− W2E250: 40,000 hours.
The mayor problem is the failure of the bearings. The cooling fans are used in:
DCS880-S0b-0045-dd ...
DCS880-S0b-00100-dd
H1
1 x 3110UL
24 V internal
DCS880-S0b-0135-dd ...
DCS880-S0b-0300-dd
H2
2 x AFB122
24 V internal
DCS880-S0b-0315-dd ...
DCS880-S0b-0450-dd
H3
2 x 3110UL
2 x AFB122
24 V internal
DCS880-S0b-0610-dd ...
DCS880-S0b-0820-dd
H4
1 x W2E200
230 V
1 x W2E200
115 V (plus code E171)
DCS880-S0b-0900-dd ...
DCS880-S0b-1000-dd
1 x W2E250
230 V
1 x W2E250
115 V (plus code E171)
Aging of the components result in:
− Increased vibration due to the imbalance of the cooling fan (can last for several months).
− Increased temperature due to the stopped cooling fan (drive trips with overtemperature).
− Check the flat cables and their connections.