Assembly And Dismantling; Maintenance And Lubrication; General Inspection - ITT LR Série Instructions De Montage, De Service Et De Maintenance

Installation, Operating and Maintenance Instruction
Voltage may be connected at standstill inside
the terminal box for heating elements or direct
winding heating.
All unused openings of the terminal box must get
closed.
Connection diagrams for auxiliary elements are found
inside the terminal box cover.
In frequency converter applications motor frame
external grounding must be used for equalizing the
potential between the motor frame and the driven
machine, if the two machines are not mounted on the
same metallic base. Use a flat conductor rather than
round wire.
Direct-on-line or star/delta starting
The terminal box on standard single speed machines
normally contains 6 winding terminals and at least one
earth terminal.
Grounding shall be carried out according to local
regulations before the machine is connected to the
electric power supply.
The voltage and connection are stamped on the rating
plate.
Direct-on-line starting (DOL)
Y or ∆ winding connections may be used.
e.g. 690 VY, 400 V ∆ indicates Y-connection for 690 V
and ∆-connection for 400V.
Star/Delta starting (Y/∆ ∆ ∆ ∆ )
The supply voltage must be equal to the rated voltage
of the machine in ∆-connection.
Remove all connection links from the terminal block.
For two-speed, single phase and special machines,
supply connection must follow the instructions inside
the terminal box.
Terminals and direction of rotation
Direction of rotation is counter-clockwise when viewing
the shaft face at the machine drive end, when the line
phase sequence L1, L2, L3 is connected to the
terminals as shown on the connection diagram in the
terminal box.
To alter the direction of rotation, interchange the
connection of any two line cables.
LMR 100-ger/fr/eng
Article No 771073201
Type DPIG, DPIH
The terminal box is located on top for the DPIG
motors of the frame sizes 56-180, while the terminal
box location is on the right side looking to the shaft
end for the DPIG motors of the frame sizes 200-225
creating easy cable entry possibilities.
Unused cable entries openings must be closed.
Besides the main winding and grounding terminals the
terminal box can also contain connections for
thermistors, standstill heating elements or bimetallic
switches.
Type SM, LM
The supply connection must be done according the
circuit diagram in the terminal box.
The three-phase current motors must get an overload
protection by the customer. Use a magneto thermal
motor protection switch with gauging for the rated
current according name plate.
If the grounding is insufficient, then it should be
installed a high sensitive differential switch (0,03
A) as additional protection from electrical
shocks.

11.5 Assembly and dismantling

11.5.1 General
Dismantling and assembly of machines must be
carried out by qualified persons using only suitable
tools and working methods.
11.5.2 Bearings
Special care shall be taken with the bearings. Bearing
shall be removed using pullers and fitted by heating or
the use of specialized tools for the purpose.

11.6 Maintenance and lubrication

11.6.1 General inspection

Inspect the machine at regular intervals.
Keep the machine clean and ensure free ventilation air
flow.
Check the condition of shaft seals (e.g. V-ring) and
replace if necessary.
Check the condition of connections and mounting and
assembly bolts.
Check the bearing condition by listening for unusual
noise, vibration measurement, bearing temperature,
inspection of spent grease.
11.6.2 Lubrication
All motors are usually equipped with on life span
grease lubricated bearings.
Under normal
recommend to change the motor bearings according
the following table:
Speed
[rpm]
max. 1800
above 1800
Page 57
Model LR, LMR, LRZ, LMZ
surrounding temperatures
lubrication
interval [h]
10000
5000
we
time
[months]
24
12
Revision 01
Issue 10/2006