Lubrication; Motors With Permanently Greased Bearings; Motors With Regreasable Bearings - ABB ACS800 Serie Manuel D'installation

In the case of the IP 55 motor and when the motor has
been delivered with a plug closed, it is advisable to
periodically open the drain plugs in order to ensure that
the way out for condensation is not blocked and allows
condensation to escape from the motor. This operation
must be done when the motor is at a standstill and has
been made safe to work on.

6.2 Lubrication

WARNING
Beware of all rotating parts.
WARNING
Grease can cause skin irritation and eye infl amma-
tion. Follow all safety precautions specifi ed by the
manufacturer of the grease.
Bearing types are specifi ed in the respective product
catalogs and on the rating plate of all motors except
smaller frame sizes.
Reliability is a vital issue for bearing lubrication inter-
vals. ABB uses the L1-principle (i.e. that 99% of the
motors are certain to make the life time) for lubrication.
6.2.1 Motors with permanently
greased bearings
Bearings are usually permanently greased bearings of
1Z, 2Z, 2RS or equivalent types.
As a guide, adequate lubrication for sizes up to 250 can
be achieved for the following duration, according to L
For duties with higher ambient temperatures please
contact ABB. The formula to change the L
roughly to L values: L = 2.7 x L1.
10 10
Duty hours for permanently greased bearings at ambi-
ent temperatures of 25 and 40°C are:
Frame size Poles
71 2
71 4-8
80-90 2
80-90 4-8
100-112 2
100-112 4-8
132 2
132 4-8
160 2
160 4-8
180 2
180 4-8
200 2
200 4-8
225 2
225 4-8
250 2
250 4-8
EN – 16
.
1
values
1
Duty hours Duty hours
at 25°C at 40°C
32 000 20000
41 000 25000
24 000 15000
36 000 22000
21 000 12000
33 000 20000
16 000 10000
29 000 18000
37 000 23000
76 000 48000
31 000 19000
71 000 44000
25 000 15000
61 000 38000
22 000 14000
56 000 35000
17 000 11000
48 000 30000
These values are valid for permitted load values given
in the product catalog. Depending on application and
load conditions, see the applicable product catalog or
contact ABB.
Operation hours for vertical motors are half of the above
values.
6.2.2 Motors with regreasable
bearings
Lubrication information plate and general lubrica-
tion advice
If the machine is equipped with a lubrication information
plate, follow the given values.
On the lubrication information plate, greasing intervals
regarding mounting, ambient temperature and rotational
speed are defi ned.
During the fi rst start or after a bearing lubrication a
temporary temperature rise may appear, approximately
10 to 20 hours.
Some motors may be equipped with a collector for old
grease. Follow the special instructions given for the
equipment.
After regreasing an Ex tD-motor, clean the motor end
shields so they are free of any dust layer.
A. Manual lubrication
Regreasing while the motor is running
– Remove grease outlet plug or open closing valve if
fi tted.
– Be sure that the lubrication channel is open
– Inject the specifi ed amount of grease into the bearing.
– Let the motor run for 1-2 hours to ensure that all
excess grease is forced out of the bearing. Close the
grease outlet plug or closing valve if fi tted.
Regreasing while the motor is at a standstill
Regrease motors while running. If it is not possible to
regrease the bearings while the motors are running,
lubrication can be carried out while the machine is at a
standstill.
– In this case use only half the quantity of grease and
then run the motor for a few minutes at full speed.
– When the motor has stopped, apply the rest of the
specifi ed amount of grease to the bearing.
– After 1-2 running hours close the grease outlet plug or
closing valve if fi tted.
B. Automatic lubrication
The grease outlet plug must be removed permanently
with automatic lubrication or open closing valve if fi tted.
ABB recommends only the use of electromechanical
systems.
The amount of grease per lubrication interval stated in
the table should be doubled if an automatic regreasing
system is used.
When 2-pole motors are automatically regreased, the
note concerning lubricant recommendations for 2-pole
motors in the Lubricants chapter should be followed.
ABB/Low Voltage Motors/ Ex manual 01-2007