Leroy-Somer Multibloc 3901-TSA 50 User manual

Leroy-Somer thanks you for having chosen their product. In order to
ensure your complete satisfaction, this document will provide you with
the necessary information for the commissioning of gearboxes and geared
motors.
Our products are systematically inspected prior to dispatch. However we
would ask you to make sure that no damage has occurred during
transportation. Should this be the case, please notify the carrier
immediately.
FOREWORD
This manual concerns the Multibloc 39 gearbox and the TSA 50 mo-
tor, used in accordance with CNIM specifications n°E8 S 38 S 03.005
(power ratings, charging cycle, ambient temperature etc).
Operation in conditions not conforming to these specifications may
affect the following recommendations.
Geared motor
Multibloc 3901 - TSA 50
1
Despite all precautions taken in the manufacture and the checking of equipment, Leroy-Somer cannot guarantee against leakage of lubricant. If minor leaks occur which could risk the safety
of equipment or personnel, it is the responsibility of the installer and the user to take all necessary avoiding action.
Manual
Commissioning, maintenance
Mb 3901 - TSA 50
"CNIM"
Réf. 2215 - 4.33 / c - 10.96
34en

GEARED MOTOR Mb 3901
1 - STORAGE and INSTALLATION
1 - 1 Storage:
The geared motor must be stored under cover, protected against
inclement weather and possible pollutants. It should be kept in a humidity
lower than 98% and at a temperature between -10°C and +50°C.
If requested at the time of ordering (internal parts), geared motors
supplied without oil are protected against corrosion by pulverisation with
anti-corrosion oil, carried out in the factory. Protection lasts for a
maximum period of 6 months.
In the case of geared motors supplied with oil up to the level, it is
advisable to operate the motor for 10 minutes every 2 months. If this is
not possible, the machine should be completely filled with oil which
should be taken down to the level on installation.
1 - 2 Assembling transmission devices :
Motor coupling : put the V seal 103 . 10mm before the output shaft shoul-
der and perpendiculary to the axis. Insert Epexelf MO2 grease (or equiva-
lent) into the worm bore and the bearing 87. The quantity of grease must
be adequate to make a reserve in the bore back.
It is advisable to assemble the transmission devices before installing
the gearbox in its final environment.
Before assembling the transmission devices, remove the protections
on the shaft end(s) and flanges. If a solvent is used, ensure that it does not
come into contact with the seals.
For assembly, use the tapped hole in the shaft end. According to DIN
332, the transmission devices should preferably be heated to a
temperature of around 80°C. In no circumstances should a hammer be
used, as shocks and blows to the shaft end will damage the bearings.
Transmission devices should be assembled as near as possible to the
shoulder of the shaft. For chain transmissions, check that the shafts are
parallel and always follow the manufacturer's recommendations.
1 - 3 Installing - Fixing :
The gearbox itself (without the motor) must always be handled using
2 x 290 lifting rings.
The geared motor must be handled as follows :
- position B (horizontal motor) : lifting ring 290 situated at the front
of the gearbox (opposite the motor) + 2 motor shackles.
- position V (vertical motor) : 2 hooks in the 2 holes in the feet
behind the motor (motor side) + 2 motor shackles.
Installation of a Leroy-Somer geared motor or gearbox must be
carried out so that ventilation air can circulate freely. Equipment should
be installed on a flat, rigid baseplate capable of withstanding
mechanical vibrations and resistant to the effects of torsion or flexion.
The output shaft must be carefully aligned, and the foot mounting should
not cause any mechanical tension on the gearbox. The foot housing must
be flanged on its support by 4 x M24 screws (class 10-9 minimum) of
sufficient length. The tightening torque must ensure that the screws are
tightened to a tension of 70% to 75% of the elasticity of the screw
material. It is strongly recommended that the screws are locked using an
adhesive or appropriate mechanical solution. It is also advisable to fit
M24 NFE 25-513 plain washers under the screw heads.
1 - 4 Electrical connection of geared motor :
Check that the motor supply voltage conforms to the mains supply
voltage. Wiring diagrams can be found on the inside of the motor terminal
box cover.
Cross sections, conductor type and protective devices conform to
specifications and current standards.
Electrical connections must be carried out by qualified personnel
adhering to the current safety regulations.
1 - 5 Commissioning
Replace the 255 plug, situated on the top, with the 257 gauge
delivered with the gearbox. Check the conformity of the gauge depending
on the operating position of the gearbox. The marking under the gauge
head must be : position B = 155 to 165 mm, position V = 120 to 130 mm.
Check the oil level. Fill as required, (see lubrication).
2 - RUNNING-IN
2 - 1 First start-up
In order to increase the life of the gearbox, it is advisable to run it in
at 50% of the rated power for around 48 to 96 hrs, then to switch
gradually to the rated load for a few hundred hours. The oil, still hot,
should be drained after this period.
2 - 2 After 50 hours of operation
Check the state of the seals. Check the oil level, the tightness of the
gearbox fixing screws and the transmission rung according to the
manufacturer's recommendations.
2 - 3 Maintenance
The Leroy-Somer gearbox or geared motor only requires limited
maintenance. However, it is recommended that the oil level be regularly
checked.
3 - SECTIONAL VIEW and PARTS LIST
The parts list on page 4 corresponds to diagram 502638 on page 5.
4 - LUBRICATION
4 - 1 Type of lubricant:
Leroy-Somer Motors recommends the use of Shell Tivela WB oil, a
polyalkylene glycol synthetic lubricant with ISO VG 220 viscosity, which
has been approved by its Technical Department. This lubricant can only
be substituted by the following lubricants with the same class of viscosity
(ISO VG 220) and of the same type (synthetic polyalkylene glycol).
These lubricants have not been approved by LSM, and the user or
recommending retailer is responsible for their use.
CAUTION:
These specifications, instructions and descriptions concern
standard operation. They do not take account of non-standard
versions or special adaptations. If these recommendations are not
adhered to, the gearbox or geared motor may suffer premature
deterioration and the guarantee may be invalidated.
4 - 2 Draining:
In order to reduce pollution which might harm the bearings and seals,
it is important to first drain the oil after a maximum of 1000 hrs of
operation (see "comissioning and running-in"). The drainage interval
depends on the service conditions. If Shell Tivela WB oil is used, we
recommend the following intervals between oil changes :
Drainage can be carried out by use of gravity, removing the 255 plug
situated at the lowest point and/or by inserting a pump into the port on top
of the gearbox. The lubricant should still be warm (for better drainage of
particles in suspension).
Geared motor
Multibloc 3901 - TSA 50
2
SUPPLIER REFERENCE
BP ENERGOL SG-XP
CASTROL ALPHA PG
ICI TRIBOL TRIBOL 800
ICI TRIBOL TRIBOL 1310
KLUBER SYNTHESO HT
LUBRILOG LUBRILOG LY PG
MOBIL GLYGOYLE 30
TEXACO SYNLUBE CLP
TOTAL CORTUSA SY
Output power (kW) 22 18,5 15 11 9 7
Drainage interval (hrs) 7 300 7 300 8 000 9 000 10 000 10 000

4-3Quantity of lubricant:
The oil level should be checked regularly using a 257 gauge. This
check must be carried out when the gearbox is cold (# 20°C) and at least
after every oil fill or top-up (wait a few minutes until the oil runs
smoothly into the housing).
5 - 1ST MAINTENANCE PARTS
Despite all precautions taken in the manufacture and the checking of
equipment, Leroy-Somer cannot guarantee against leakage of lubricant. If
the occurrence of minor leaks could risk the safety of equipment or
personnel, it is the responsibility of the installer and the user to take all
necessary avoiding action.
See also "dismantling and reassembly"
6 - DISMANTLING
6 - 1 Bearing change:
In order to change one or more bearings, dismantling should be
carried out as described below.
1. Drain the gearbox.
2. Uncouple the motor:
Use the extraction holes and the motor lifting rings.
3. Remove cap 16
Use the extraction holes
4. Take out worm screw 41
Push the screw towards bearing 64 until the end passes input seal 93.
Remove the latter. Completely remove the worm screw, paying attention
to bearing 64, without inverting the rings if it is to be refitted. In this case,
carefully preserve shim 140.
5. Remove cap 9
Use the extraction holes. If bearings 61 and 62 are not being changed,
take care not to invert the external rings or pole shims 123 and 124.
6. Remove end shield 5
Use the extraction holes
7. Remove wheel 51 and output shaft 32
Use a lifting ring screwed into the shaft end. Be careful not to knock the
wheel teeth or the bearing rollers.
8. Bearings 61 and 62
Remove the internal rings with rollers using a bearing remover without
damaging the running surface of output shaft 32.
9. Bearing 64
Heat lock nut 128 to around 150°C to destroy the film of glue. Unscrew
lock nut 128, taking advantage of its notched bore to stop screw 41 from
turning. Dismantle the internal rings of bearings 64 using a bearing
remover.
10. Bearing 63
Dismantle retaining ring 135 and remove the external ring and its rollers.
Remove the internal ring of the worm screw using an appropriate extractor.
Important note:
Wheel 41 is shrunk and hot-glued onto shaft 32. Any dismantling or
assembly not carried out directly by Leroy-Somer could jeopardise the
safety of the transmission. Wheel 41 and shaft 32 are considered as a
single piece.
All dismantled parts must be cleaned before being reassembled.
All dismantled sealing devices must be replaced by new ones.
If the gearbox is totally dismantled, it is advisable to clean the inside
of the housing using a product compatible with the lubricating oil.
6 - 2 Changing the seal:
1. Seal 93
This may be dismantled using a screwdriver or other tool which is able to
pierce the steel armature (be careful not to damage the precision ground
running surface of screw 41).
2. Seal 91
Dismantled after removal of cap 9 (see section 5)
===> The new seals must be greased before assembly (polyglycol
grease is imperative) and set absolutely straight so that they are
perpendicular to the shaft axis.
7 - REASSEMBLY:
This should be carried out by reversing the dismantling procedure,
using the latest techniques, especially with regard to the tapered roller
bearings.
1 - Bearings 64 : the internal and external rings must not be inverted
(paired bearings). The thread at the end of 41 must be degreased with
Loctite 7063 or an equivalent. Lock nut 128 must be tightened to 400 N.m
and locked by Omnifit 200M or an equivalent.
2 - Bearings 61 - 62 : the bearings must be adjusted before
positioning the wheel with operational play as indicated in diagram
502638.
3 - Bearing 41: its position in relation to the worm screw is adjusted
by shims 123 and 124. This can only be checked by orientating it so that
blue is visible in the holes in the housing situated on the wheel axis. The
position is correct when the orientation in figure 3 is achieved. Be careful,
changing shims 123 and 124 in order to correct the orientation of the
wheel must not modify the play of bearings 61 and 62 previously
adjusted.
4 - Tightening the screws: tightening torques for both the fixing
screws and the braking by adhesive should be as indicated in drawings
502638.
5 - Before coupling the motor, clean the output shaft ; the key and the
worm bore. Replace the V seal 103. If the bearing 87 is too much worn
(bore > ø 36,040 mm) it must be replace as follow. Insert a ball (35 mm <
ø < 20 mm) into the bore back. Screw the bearing with an electrical Nb 29
hand tap up to the ball. Continue to screw and the bearing will translate
on the tap.
Geared motor
Multibloc 3901 - TSA 50
3
operating Q (approximate)
position (litres)
B(horizontal motor) 35
V(vertical motor) 33
Drainage Part Ref. Observations
interval (Ps : output power of gearbox)
35000 hrs oilseals 91-93 or if leakage (see previous text)
70000 hrs bearings 61-62-63-64 if Ps > 15 kW
140000 hrs bearings 61-62-63-64 if Ps ≤15 kW
IDEAL ORIENTATION
should be identical
on each tooth flank
ORIENTATION TOWARDS
ENTRANCE
(or to the left)
Move the wheel
to the left
ORIENTATION TOWARDS
EXIT
(or to the right)
Move the wheel
to the right
1
2
3

8 - HIGH PRESSURE CLEANING:
Oil gauge 257 must be replaced with a stop plug 255.
The oilseals must be protected so that there is no pressure on the lip.
Drain plug 259 must be removed (during washing, water must not be able
to enter through the hole).
10 - PARTS LIST (sectional diagram 505013, exploded view 502638)
9 - ORDERING PARTS
When placing an order, please give the following details :
- type of gearbox;
- assembly position,
- precise reduction ratio,
- manufacturing number, indicated on the nameplate
- number, part description, LS code
- type, number of poles, motor rating
(see motor nameplates).
Geared motor
Multibloc 3901 - TSA 50
4
Rep. Description LS code Quantity Dimensions Standard
1 Carter/Housing PUS654CF001 1
5 Palier/Bearing housing PUS450DF010 1
9/10 Chapeau/Cap PUS050DF016 1/1
16 Chapeau/Cap PUS185DG001 1
32 Arbre/Output shaft ABE120RM001 1
41 Vis sans fin/Worm ENG062VF055 1
51 Roue/Wheel ENG385RV001 1
61/62 Roulement/Bearing RLT100RC002 1/1 30220 ISO 355-1981
63 Roulement/Bearing RLT060RO024 1 NU 212 E ISO 15-1977
64 Roulement/Bearing RLT055RC850 1 31311A.A80.120.N11CA ISO 355-1981
81 Clavette/Key ARR028RH360 1 A 28x16x125 - R≥1400MPa NF E 22-177
82 Clavette/Key ARR025RG341 1 A 25x14x90 - R≥1800MPa NF E 22-177
87 Coussinet/Bearing RLT036CB002 1 36/42 X 45
91 Joint à lèvre/Oilseal JOI100BB100 1 AS 100x120x12 FP DIN 3760
93 Joint à lèvre/Oilseal JOI060BD003 2 AS 60x110x13 NB DIN 3760
95 Joint torique/O ring seal JOI380TB001 1 380x4 NB 70shores A
97/98 Joint torique/O ring seal JOI172TB0000 1/1 172x3 NB 70shores A
100 Joint torique/O ring seal JOI122TB000 1 122x2,5 NB 70shores A
103 Joint V/V seal RLT045JV003 1 V 45 S
123/124 Rondelle d'ajustage/Shim RLT155RA101 * 155X180X0,1 DIN 988 sp.
123/124 Rondelle d'ajustage/Shim RLT155RA102 * 155X180X0,15 DIN 988 sp.
123/124 Rondelle d'ajustage/Shim RLT155RA103 * 155X180X0,5 DIN 988 sp.
128 Écrou/Lock nut RLT055ER001 1 KM11 ISO 2982
134 Entretoise/Strut PDC005EN019 1 55x67x5 DIN 988 sp.
135 Circlips/Retaining ring ARR110CI001 1 Ø110 DIN 472
140 Rondelle d'ajustage/Shim RLT105RA000 * 105x130x0,1 DIN 988
140 Rondelle d'ajustage/Shim RLT105RA005 * 105x130x0,15 DIN 988
140 Rondelle d'ajustage/Shim RLT105RA003 * 105x130x0,5 DIN 988
171 Vis/Screw VIS012HF108 12 M12x40 - 8.8 ISO 4014
173 Rondelle Grower/Washer VIS012WZ002 12 W12 NF E 25-515
179/180 Vis/Screw VIS012HF207 8/8 M12x35 - 8.8 ISO 4014
181/182 Rondelle Grower/Washer VIS012WZ002 8/8 W12 NF E 25-515
192 Vis/Screw VIS012HF206 6 M12x30 - 8.8 ISO 4014
201 Vis/Screw VIS012HF210 1 M24x50 - 8.8 ISO 4014
203 Rondelle/Washer PUS110TX006 1 25x110x7 NF E 25-513 sp.
209 Vis/Screw VIS008CH306 8 Chc M8x30 - 10-9 NF E 25-125
210 Rondelle Grower/Washer VIS008WZ002 8 W8 NF E 25-515
252 Bouchon cuvette/Plug QUI120BD101 1 120x12
255 Jauge + joint/Gauge QUI026BP009 1 3/4 Gaz
257 Bouchon + joint/Oil plug QUI026BM014 5 3/4 Gaz DIN 908
259 Bouchon purge/Draining plug QUI006BP001 1 Ø5,8
290 Anneau de levage/lifting ring LEV016AN002 2 M16x25 DIN 580
300 Pignon/Gear ** 1 20B - 24B -28B : Z= ? NF E 26-102
301 Entretoise/Strut PUS110TX008 1 ou 0 * 90x110x17 por 24B
301 Entretoise/Strut PUS110TX007 1 ou 0 * 90x110x37 por 20B
302 Bouchon/Plug QUI013BM002 1 1/4 gaz DIN 906
303 Tuyau de lubrification CUI008TU101 1 Ø8/10x335
* as required
** specify the type of chain, the pitch p and the number of teeth Z - specify whether dynamo driven or not
sp. non-standard dimensions
Screw tightening torques and adhesives used should be as indicated in drawings 502638 page 5

Geared motor
Multibloc 3901 - TSA 50
5
According to diagram ref. 502638 C
Positioning of wheel 51 in relation to screw 41 according to diagram p3
Axial play on shaft 32: 0 (0, + 0.05) at 20°C
Play between housing I and cap 16: 0 ( + 0.01, + 0.1) at 20°C, tightened by 3 x 192 screws (at 120°C) to 10 Nm
Tightening torque for screws 171, 179 and 180 : 70 Nm ±5 ; locking with OMNIFIT 100 M
Tightening torque for screw 192 : 50 Nm ±5 ; locking with OMNIFIT 100 M
Tightening torque for lock nut 128 : 400 Nm ±20 ; locking OMNIFIT 200 M

Geared motor
Multibloc 3901 - TSA 50
6
Sprocket type
NF E 26.102

MOTOR TSA 50
Reception:
Check the state of the motor. In the event of damage to the motor or even
to its packaging, contact the carrier.
Check that the motor conforms with the order (mounting arrangements,
nameplate information).
Storage
Whilst waiting to be installed, the motor must be stored safe from knocks
and vibration, and preferably in a clean and dry environment.
If the latter is not possible the motor must at least be placed in its
operating position under cover, however crude (tarpaulin or corrugated
iron) in the state in which it was sent, in other words cable gland or cable
entry closed, terminal box and plugs for the drain holes tightly closed. In
this situation, the relative humidity must not exceed 98%.
Handling
The handling rings of the motor are the appropriate size for its own
weight. They must not be used for lifting the unit on which the motor is
assembled.
1) Commissioning
1.1) Checking before installation.
Ensure that :
- the brake works and can be correctly released.
- when the brake is released, the rotor can be turned by hand.
- the winding has not absorbed any humidity. To check this, measure the
insulation resistance of the stator windings using a 500V D.C.
megohmmeter.
We estimate that if the value is lower than 10 MΩin cold state, the
winding must be dried.
1.2) Installation.
Ensure sufficient aeration for the motor.
The ventilation intake and discharge holes should be opened wide to
enable the cooling air to circulate freely. Make sure that the air is not
recycled.
Provide easy access to terminals, grease nipple and draining plugs.
On delivery of the motors these drain holes are blanked with plugs (73).
They should be situated as low as possible on the motor.
1.3) Motor connection :
The links required for coupling the motor should be placed on the
terminals.
Connect the motor as shown in the connection diagram.
In certain cases, a connection error (Y connection instead of ∆with a
small load) may lead to a significant rotor temperature rise without
tripping the protection device, causing damage to the rotor cage,
windings, or bearings.
For connection use cables of sufficient cross-section (5 Amperes per
mm2) to reduce voltage drops, and cables with an external diameter
corresponding to the dimensions of the cable glands.
Earth the motor. A screw situated inside the terminal box and another on
the flange, can be used to connect the motor to the earth.
NEVER TOUCH THE INTERNAL MOTOR CONNECTIONS
For all connections, make sure the connectors are arranged correctly and
the lock nuts and counternuts are tightened properly before power-up.
The auxiliary circuits (probes, detectors, brake supply etc) are connected
back to the terminal box (see diagram).
To reverse the motor direction of rotation, simply swap over 2 of the line
conductors.
1.4) Connection of CDF 101 card.
This unit enables the brake to be supplied directly from a 400V supply. It
applies an overvoltage of several milliseconds before stabilising at its
steady value.
Adjustment is carried out by placing a needle type voltmeter on the output
terminals of the unit and using a small screwdriver to alter the
potentiometer situated on the front panel.
The holding voltage must be adjusted to around 90V to 100V.
A protection fuse is mounted on the card inside the unit.
Geared motor
Multibloc 3901 - TSA 50
7
TENSION INFERIEUR
LOWER VOLTAGE
T
ENSIONSUPERIEURE
HIGHER VOLTAGE
W
2U2
V
2
U1 V1 W1
L1 L2 L3 L1 L2 L3
PRESSES ETOUPES
PACKING GLANDS
W2 U2 V2
U1 V1 W1
BN
+
+
BN -
BU BU
- T1 T2 F1 F2 BU BK GR
no c nf
Capteur inductif
Inductive proximity
switches
CTP Frein
Brake Minirupteur Circuit-breaker
BU=bleu/blue
BK=noir/black
BN=marron/brown
GR=
g
ris/
g
re
y
MOTEUR TRIPHASE 1 VITESSE 2 TENSIONS
THREE-PHASE MOTOR 1 SPEED 2VOLTAGES
L1-L2-L3
W
2U2
V
2
U1 V1 W1
SCHEMA DE BRANCHEMENT
400V-50Hz
460V-60Hz
F
re
i
n
Um
-+
®
LEROY
SOMER
C
.
D
.
F
101
~
FREI
N
CONNECTION DIAGRAM
BRAKE
POWER CONNECTION DIAGRAM

2) Service checks and periodical maintenance.
Keep the motor clean so as not to interfere with its cooling operation.
Ensure in particular that the ventilation circuit passages are not
obstructed.
Open and close the drain holes for the condensation water from time to ti-
me (at least once a year). It is advisable to leave drain holes open
regardless of the protection index in cases where the motor is operating in
a very humid atmosphere or when it is subject to extreme temperature
variations.
2.1) Greasing.
The bearing must be greased regularly.
Lubrication should be carried out every 6200 hours; the quantity of new
grease to be added is 15cm3.
Do not forget that an excess of grease can lead to a considerable
temperature rise in the bearing. The period between greasings must not
exceed one year even if, due to operating conditions, the normal interval
does not apply.
Similarly we recommend that after a motor stop of six months or
longer, the motor is greased before restarting.
It is recommended that the above greasing operations are carried out with
the motor running.
Note : Non reversible greasing circuit.
2.2) Quality of grease
The bearings are covered in high quality SKF LGM T2 grease in the
factory. This grease is recommended for subsequent greasing. Avoid
mixing greases.
Should similar grease of a different brand or composition be used, the
bearing must be changed and the housing, pipes and internal cover
cleaned with petrol to remove the old grease.
Regrease the bearing using the specially designed grease nipple.
2.3) Inspection of bearings.
Regularly check that the bearing is operating correctly.
A temperature rise in the bearing housing or abnormal noise during
rotation are warning signs of a worn bearing. In the event of this
happening, THE BEARING IS DEFUNCT AND MUST BE
REPLACED AS SOON AS POSSIBLE. If not, the bearing is likely to
seize, possibly damaging the motor and connected equipment.
In order to dismantle a bearing properly for replacement it is important to
label the different parts to facilitate reassembly and avoid any error or
inversion.
Bearings can be removed using extractors.
After desmantling and reassembly, grease the whole unit.
After desmantling and reassembly, proceed with a complete greasing and
make sure that the grease used is emptied by the waste grease pipe.
2.4) Spare parts
When placing an order, please quote the details given on the motor
nameplate.
3) Storage for longer than 6 months
In some cases, rotating electrical machines can be stored for quite a long
time before being commissioned. Even when the machines are stored in
the correct conditions, certain electrical as well as mechanical checks
must be carried out.
3.1) Storage conditions
The machine must be stored in a sheltered environment, protected
against humidity (warehouse for example). In humidity levels higher
than 90%, the machine insulation drops very quickly and is practically
zero at humidity in the region of 100%.
3.2) Electrical checks
Before starting the machine running, it is advisble to check the insulation
between phase and earth and between phases. This check is carried out
using a 500 V D.C. megohmmeter. Insulation should be at least 10
megohms when warm (100°C) or 100 megohms when cold.
In the event that this value is not reached, and always, if the machine has
been subjected to water splashing, spray, a prolonged period in an
environment with high humidity, or if it is covered in condensation, we
recommend that the stator be dried for 24 hrs in an oven at a temperature
of around 100 to 110°C.
If the stator cannot be dried in an oven, you should:
- supply the stator with a 3-phase alternating voltage (via an induction
regulator or a step-down transformer with adjustable taps) at around
10% of the nominal voltage for 12 hrs, with the rotor locked.
- supply the stator with direct current, with all three phases in series (via
a D.C. generator with separate field excitation or batteries for motors of
less than 30 h.p.): direct voltage of 1 to 2% of the rated voltage.
The alternating or direct current must not exceed 60% of the rated cur-
rent.
The current can be controlled using a clamp ammeter (A.C.), or a shunt
ammeter (D.C.) and by placing a thermometer on the motor housing: if
the temperature exceeds 70°C, reduce the voltage or current indicated
above by 5% of the original value for a 10°C temperature rise.
3.3) Mechanical checks
If the motor has not been operated for 6 months, lubricate before
restarting.
3.4) Prolonged standstill
Conditions similar to those for prolonged storage may apply if the
machine has been stopped for a long period whilst remaining in its
operating position.
The whole motor should be checked before restarting.
Geared motor
Multibloc 3901 - TSA 50
8

4) Adjustment
4.1) Adjusting the braking torque
a/ remove the 6 fixing screws (37), taking turns to gradually unscrew
them.
b/ take off the washer (36) and clean the contact surfaces.
c) remove or add springs (32) and washers (33) in order to modify the
braking torque. (See table below)
d/ put back the washer (36), after applying a silicon thread round the
edges.
e/ tighten the 6 screws (37).
Note: Try and balance the position of the springs and washers as well as
possible.
* Green springs
4.2) Manual brake release.
a/ take out the central plug (38).
b/ screw (for around 10 mm) the 2 rods of the release lever (63) into the
corresponding tapped holes (on 17).
c/ insert the six hexagonal keys of the control wheel (64) into the shaft
end.
d/ to turn the motor, simply exert force on the operating lever (63) and
simultaneously exert torque on the wheel (64).
4.3) Adjustment of braking process.
a/ remove the terminal box cover (58) by taking out the screws (59).
b/ take out the compression washer plug (39).
c/ connect an ohmmeter between "bk" and "bu" on the microswitch
terminal block (49) (see the connection diagram).
d/ tighten the screw (34) until zero resistance is displayed on the
ohmmeter.
e/ loosen the screw (34) until the plunger swings and an infinite resistance
is displayed on the ohmmeter.
f/ lock the lock nut (35) after adjustment.
g/ check that the microswitch works correctly by manually releasing the
brake (see section 4.2).
h/ disconnect the ohmmeter, replace the terminal box cover (58).
i/ replace the plug (39).
4.4) Adjustment of the air-gap.
a/ remove the terminal box cover (58) by taking out the screws (59).
b/ take out the compression washer plug (39).
c/ connect an ohmmeter between "bk" and "bu" on the microswitch termi-
nal block (49) (see the connection diagram).
d/ tighten the screw (34) until 0 resistance is displayed on the ohmmeter.
e/ loosen the screw (34) until the plunger swings and an infinite resistance
is displayed on the ohmmeter.
f/ turn the screw another 3 turns.
g/ lock the lock nut (35) after adjustment.
h/ disconnect the ohmmeter, replace the terminal box cover (58).
i/ replace the plug (39).
4.5) Adjustment of inductive sensor.
a/ remove the terminal box cover (58) by taking out the screws (59).
b/ manually release the brake (see section 4.2).
c/ using the control wheel, position one of the washers located on the
inertia wheel (13) facing the inductive sensor.
d/ screw in the sensor (65) so that it comes into contact with a washer and
then unscrew it by half a turn. Lock the nut after positioning the sensor.
e/ manually rotate to ensure that nothing is touching.
f/ replace the terminal box cover (58).
4.6) Changing the electric magnet.
The table below indicates, depending on the type of motor, the number of
braking operations which can be performed by the brake.
Above these values the brake linings will need to be changed. To do this :
a/ remove the terminal box cover (58) by taking out the screws (59).
b/ disconnect (labelling the wires):
- the auxiliary circuits from inside the motor (connector 49).
- the motor supply (on 47).
c/ remove the 2 fixing screws (48) on the terminal plate.
d/ remove the 3 screws (46) and take off the terminal box support (45).
e/ remove the inductive sensor(s) (65).
f/ take off the compression washer (36) (see section I). Remove the
preloaded wavy washers (33) and springs (32). Label their positions.
g/ remove the 6 fixing screws (30) of the brake housing (24) and take off
the whole unit.
h/ change the electric magnet (17). Take out the microswitch (21) with its
support (18) and fix the whole thing onto the new electric magnet.
Adjustment should be carried out once the brake has been fitted.
i/ reassemble the whole unit. Put back the springs and preloaded wavy
washers in their original positions as well as the columns (31). Fix the
washer (36) using screws (37).
j/ adjust the microswitch setting (see section 4.3 and 4.4).
k/ refit the inductive sensors and adjust as necessary (see section 4.5).
l/ refit the terminal box (screw 46). Connect the wires of the auxiliary cir-
cuit and the motor supply.
m/ replace the cover (58).
Geared motor
Multibloc 3901 - TSA 50
9
Torque Number of Number of
Nm springs washers
40 2 0
50 2 2
60 3 0
70 3 2
80 4 0
90 4 2
100 4 4
110 5 2
120 6 0
130 6 2
140 6 4
150 6 6
160 8 0
170 8 2
180 8 4
190 8 6
200 8 8
225 8* 4
250 8* 8
Type Power Number of braking
kW operations
TSA50S 8,4 1000000
TSA50M 10,8 1000000
TSA50L 13,2 1000000
TSA50LL 18 850000
TSA50VL 22,3 650000
TSA50VMM 26,5 550000
TSA50XL 33,3 420000

Geared motor
Multibloc 3901 - TSA 50
10
Rep Qté Désignation/Designation Référence/Reference
11Masse stator complète/Complete stator *
21Rotor/Rotor *
31Flasque côté bout d'arbre/End shaft flange 011F156050
41Flasque côté frein/Brake bearing 011F604050
51Roulement/Ball bearing 080W050110
61Couvercle intérieur coté frein/Rods 026F001050
74Vis de fix. couvercle intérieur/Clamping screw cap 42
816 Rondelle frein/Lock washer 921
96Tige de fixation des flasques/Clamping rod flange** *
10 6Ecrou/Nut 706
11 1Bouchon entrée de graisse/Trap introduction grease 068E002014
13 1Volant d'inertie/Inertia wheel *
14 12 Ailette de ventilation/Blade of a fan *
15 24 Vis de fixation des ailettes/Clamping screw fin 045Q400005
16 1Assembleur conique/Coned assembler 062E800050
17 1Electromobile équipé/Armature of electric magnet 057F304050
18 1Support minirupteur/Circuit breaker-support 066F404050
19 2Vis de fixation support/Clamping screw support 215b
20 2Joint torique/Ring seal 070U381054
21 1Minirupteur/Circuit-breaker 069E800050
22 2Vis fixat. minirupteur/Clamping screw circuit-breaker 045G450002
23 4Ecrou/Nut 045C000002
24 1Electrofixe/Flange brake EC050275001
25 2Grille de protection/Safety grid 048F001050
26 4Passe fil/Bead wire 048F233000
27 1Tôle de protection/Safety sheet 061F200050
28 2Vis de fixation tôle/Clamping screw sheet 216b
29 1Déflecteur d'air/Air baffle 065U500050
30 6Vis de fixat. flasque frein/Clamping screw flange 045H402008
31 2Colonne de guidage/Column 064F560050
32a *Ressort/Spring 058E121050
32b *Ressort vert/Green spring 058E122050
33 *Plot de centrage/Washer 059F200050
34 1Vis de règlage du minirupteur/Adjusting screw 045V400005
35 1Ecrou de blocage/Locknut 704b
36 1Couronne de compression/Spring washer 062F200050
37 5Vis de fixation rondelle/Clamping screw washer 34
38 1Bouchon central/Middle trap 068E003014
39 2Bouchon rondelle compression/Washer trap compression 068E004014
40 1Ceinture démontable/Changeable belt 051F800050
41 2Crochet/Hook 044E800054
42 1Vis de fixation crochet/Clamping screw hook 045H400006
43 1Ecrou/Nut 705
44 1Joint de support/Seal support 070U310050
45 1Support de boîte à bornes/Terminal box support 066F405050
46 3Vis de fixation support/Clamping screw support 045D403006
47 1Plaque à bornes/Terminal strip *
48 2Vis fixat. de plaque à bornes/Clamping screw terminal strip 115
49 11 Bornier/Strap connection *
50 1Joint d'embase/Seal baseplate 070E312180
51 1Couvre bornes/Terminal box 057F118180
52 4Vis fixation couvre bornes/Clamping screw terminal box 21
53 4Rondelle frein/Lock washer 920
54 1Presse étoupe aliment. moteur/Packing gland motor 068E921213
55 1Presse étoupe aliment. frein/Packing gland brake 068E913209
56 1Presse étoupe minirupteur/Packing gland circuit breaker 068E913209
57 1Joint de couvercle/Seal cover 070E311180
58 1Couvercle de boîte à bornes/Terminal box cover 066B800180
59 2Vis de fixation couvercle/Clamping screw cover 31
60 1Clavette/key 042N090012
61 1Vis de masse/Earth 045C400006
62 1Rondelle/ Washer 904
63 1Levier de déblocage/Brake release level 071A800050
64 1Volant de manoeuvre/Control wheel 054F400050
65 1Capteur inductif/Inductive proximity switches 065E600050
66 1Bouchon fileté/Screw plug 068E001012
67 1Presse-étoupe capteur/Packing gland 068E913209
68 1Support bornes /Strap connection support 066U406050
69 2Entretoise/Spacer 070U022050
70 2Vis/Screw 29
71 1Carte CDF 101/ Feeder CDF 101 069E808046
72 1Joint/Seal 070U303070
73 2Bouchon de purge/Drain plug 068E001006
* The references for these parts vary according to the motor rating. To order these parts, give the serial number of the machine and its power rating. (Data on the nameplate).
** Rods tightened at a 10 Nm torque.

Geared motor
Multibloc 3901 - TSA 50
11