Strobel 218D-TP-R User manual

For the professional user
Für den professionellen Anwender
Mechanikeranleitung
Class:
Klasse:
Model:
Ausführung:
Dated:
Stand:
218D-TP-R
4
Spezialmaschinen GmbH
Mechanic‘s Instructions

Im Zeichen der Qualität
ou nd the Strobel trademark on every Strobel
machine leaving our works. And with good reason.
This symbol is a guarantee of the high quality of
our products. Quality which creates trust – trust
in our technology, our service and, not least of all,
in our good name.
ie nden die Strobel-Schutzmarke auf jeder
Strobel-Maschine, die unser Werk verlässt.
Und das aus gutem Grund. Denn dieses Zeichen
garantiert Ihnen die hohe Qualität unserer
Produkte. Qualität, die Vertrauen schafft – in unsere
Technik, unseren Service und nicht zuletzt in unseren
guten Namen.
S
Y
The sign of quality

trobel clients know that they can expect a particularly
high standard of performance from our company and our
machines. Now you have settled for one of our products.
For us this is a source of encouragement and of obligation
to Justify your trust.
If you wish to prot from the performance and efciency of
your Strobel machine as long as possible, exact handling
and thorough care is necessary. For this reason we kindly
request that you read the operating instructions closely.
It provides all the information you need for trouble free
operation.
And if you do happen to need a spare part the enclosed
spare parts list gives a complete overview. It is clearly
classied according to components so that you can nd the
required part quickly and easily. In order to avoid errors we
request you to quote machine class, machine number and
part number completely on your spare part order.
We wish you lots of success in your work with your new
Strobel machine.
S
A decision with future
Spezialmaschinen GmbH

1 MA_218D-TP-R_A4_181015_en
Mechanic's instructions
STROBEL Class 218D-TP-R
Contents
1General notes on safety............................................................................................5
2General .....................................................................................................................7
2.1 Operating instructions.....................................................................................7
2.2 Class description, machine number and reference position left/right.............7
2.3 Machine applications......................................................................................7
2.4 Technical data................................................................................................8
2.5 Brief setting instruction...................................................................................9
3Hints for repair and settings ....................................................................................10
3.1 Mounting the needle plate............................................................................10
3.1.1 Removing the needle plate (Fig. 1)..................................................10
3.1.2 Remounting the needle plate...........................................................11
3.1.3 Setting the needle plate (Fig. 1).......................................................11
3.1.4 Adjusting the needle ........................................................................12
3.1.5 Replacing the needle slide plate (Fig. 2)..........................................12
3.2 Needle lever .................................................................................................13
3.2.1 Setting the needle lever path (Fig. 1)...............................................13
3.2.2 Lateral adjustment of the needle lever (Fig. 1).................................13
3.3 Stroke of loop ...............................................................................................14
3.3.1 Setting the needle stroke (Fig. 3).....................................................14
3.4 Looper ..........................................................................................................15
3.4.1 Removing and re-mounting the looper (Fig. 3 + Fig. 4)....................15
3.4.2 Setting the shuttle in relation to the needle (Fig. 5)..........................16
3.4.3 Removing and fitting the bobbin case (Fig. 5)..................................16
3.4.4 Thread tension - bobbin thread (Fig. 7)............................................17
3.4.5 Setting the bobbin case venting (Fig. 4)...........................................17
3.5 Feed motion..................................................................................................18
3.5.1 Feed (bottom feed) (Fig. 9)..............................................................18
3.5.2 Setting the feed motion (Fig. 8)........................................................18
3.6 Presser plate ................................................................................................19
3.6.1 Setting the presser plate (Fig. 9)......................................................19

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3.7 Plunger.........................................................................................................20
3.7.1 Removing the plunger (Fig. 10)........................................................20
3.7.2 Fitting the plunger (Fig. 10)..............................................................21
3.7.3 Adjusting plunger motion (Fig. 11)...................................................21
3.7.4 Adjusting the digital stitch depth (Fig. 12) ........................................22
3.8 Setting the plunger lowering (Fig. 13, Fig. 14, Fig. 15).................................23
3.9 Thread spreader...........................................................................................26
3.9.1 Setting the thread spreader (Fig. 16)...............................................26
3.10 Seam lock.....................................................................................................27
3.10.1 General (Fig. 17)..............................................................................27
3.11 Pneumatic venting........................................................................................28
3.11.1 General............................................................................................28
3.11.2 Setting the lifting ..............................................................................28
3.12 Sewing drive.................................................................................................28

3 MA_218D-TP-R_A4_181015_en
Appendix
Circuit diagrams
Electric mains, sewing drive - sewing machine lamp:
258.00.35 Mains connection plan cl. general
(AB611A with/without sewing machine lamp gen.)
Connecting the sewing machine:
258.21.66 Electrical connection plan cl. 200, 300
258.10.16 Electrical wiring diagram – Plunger lowering
Cl. 218D-TP as of version 3 and Cl. 325-40D-TP as of version 9
259.00.62 Pneumatic circuit diagram cl. 218D-TP-R
259.10.62 Pneumatic construction circuit diagram cl. 218D-TP-R
Connecting Plunger lowering and spot tack:
258.10.25 Electric circuit diagram cl. 218D-TP-R
Connecting digital display:
258.21.24 Electric connection diagram
Subject to change without prior notice

4 MA_218D-TP-R_A4_181015_en

5 MA_218D-TP-R_A4_181015_en
1 Every person in charge of setting up, operating, servicing and repairing the
machine must first read and understand the operating instructions and
particularly the safety instructions before starting up the machine.
General notes on safety
Failure to comply with the following safety instructions can lead to bodily
injury or damage to the machine.
1. The machine must only be operated by persons familiar with the relevant
operating instructions and who have been instructed accordingly.
2. Before commissioning also read the notes on safety and the operating
instructions of the sewing drive manufacturer.
3. Only use the machine in the intended manner and never without the
provided guards. Always observe the pertinent safety regulations.
4. Switch off the main switch or pull the power plug for threading, changing
the reels, exchanging sewing tools such as needle, gripper, needle plate,
transport devices, possibly cutter and cutting block, for cleaning and when
leaving the workplace as well as for maintenance.
5. General maintenance tasks may be carried out only by properly trained
persons in accordance with the operating instructions.
6. Repair work, retrofitting and maintenance may be carried out only by
technicians or specially trained personnel.
7. When servicing or repairing pneumatic equipment, the machine must be
disconnected from the pneumatic supply. Exceptions are only allowed for
adjustment work and tests of functionality performed by specially trained
technicians.
8. Only specially qualified technicians may work on the electrical equipment.
9. It is forbidden to work on electrically live components! Exemptions are
covered by the EN50110 (DIN VDE0105) regulations.
10. Any retrofitting or alterations to the machine may only be performed under
strict compliance with all pertinent safety regulations.
11. Only use our approved spare parts when servicing and/or repairing the
machine.
12. It is forbidden to operate the sewing head until it is determined that the
entire sewing unit complies with EU provisions.
13. It is essential that you observe and follow these instructions as well as the
generally valid safety regulations.

6 MA_218D-TP-R_A4_181015_en
14. Warning instructions given in the operating instructions that pertain to
especially dangerous parts of the machine must be indicated at these
positions using a safety symbol.
Warning instructions given in the operating instructions that pertain to
special injury hazards for operating personnel or technicians must be
indicated at these positions using a safety symbol.

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2
2.1
General
Any person involved in the installation, operation, maintenance and repair of
the machine must have read and understood the operating instructions and
mainly the safety instructions before starting the machine.
Operating instructions
2.2
For side-referenced descriptions (right, left), the operating side of the machine
is the starting base.
The class descriptions (type) are at the front, the machine and model number
(towards the hyphen) is located below the cover on the right side on the
housing.
Class description, machine number and reference position
left/right
2.3 Two thread felling machine for felling of the under collar at the neckring of
jackets and coats
Machine applications

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2.4
Recommanded rated speed 1300 min-1
Technical data
Motor power 550 W
Toothed belt pulley/machine z = 38
Toothed belt profile HTD 5M-9
Stitch length 2 - 6 mm
(depend on fabric)
Kind of stitch: two thread blindstitch lockstitch
Stitch type 314
Needle system GROZ-BECKERT 1717 VRUE
Needle size 90
Thread polyester continuous filament
Thread size 80
Air pressure 6 bar
Average air consumption 40 l/h
Foot print 0.6 m x 1.1 m
Noise:
Average noise level at a speed of
n = 1300 min-1: LpAm 74,5 dB(A)
Noise test according to DIN 45635-48-1 KL3

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2.5 Theoretic needle radius 43.6 mm Brief setting instruction
Theoretic needle glide plate 43.59 -0.03 mm
Stroke of loop 2.8 mm
Distance from looper point to needles eye 1.8 ±0.2 mm
Highest position of plunger 2 mm before plunger center
in relation to needle
Plunger stops in relation to needle 2 mm after plunger center
Start of feed motion in case needle’s eye 5 mm at way back
of 6 mm feed length before plunger center
Length of feed motion 2 - 6 mm adjustable
Feed position, rear 0.3 mm distance to clamp plate
Feed plate lift 4 - 5 mm
Feed plate rises needle point 10 mm before plunger center
Distance of guide block in relation 2.5 ±0.5 mm
to plunger guide plate
Lifting between feed plate and stitch plate 14.5 mm machine must
rotate without difficulty
Number of spot tacks 2 – 4 stitches

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3
Hints for repair and settings
Attention, danger!
Observe safety and operating instructions before realizing
any maintenance and repair works.
Failure to do so may result in heavy bodily injuries.
3.1
Mounting the needle plate
Attention!
Switch off machine electrically!
Needle plates are set at works and can be replaced easily as complete kit.
3.1.1 1. Switch off the machine at the mains
For pneumatic venting: plunger, presser plate and feed are vented.
Removing the needle plate (Fig. 1)
2. Remove needle.
3. Pull off lower arm cover.
4. Vent plunger, presser plate and feed using knee lever.
5. Push screw driver between lower arm and leaf spring.
6. Slacken bolt (5) and remove needle plate from machine.

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Fig. 1
3.1.2 Remount the needle plate in reversed order. Remounting the needle plate
3.1.3 The theoretical needle radius of 43.6 mm should be 0.01 - 0.04 mm smaller at
the needle slide plate; in other words, a checked needle is raised by
0.01 - 0.04 mm.
This is verified with a dial gauge.
Setting the needle plate (Fig. 1)
If this setting is correct, there should automatically be a space of
0.25 - 0.35 mm between the needle and the needle plate radius (also verify with
a dial gauge).
Deviations from this will considerably detract from the sewing result and may, in
addition, result in damage or premature wear of the sewing tools.
By slackening the threaded pin (4) on the left and right in the head, and
slackening the fixing screws (5), the needle plate may be pushed carefully
upwards or down, towards the needle.
Warning! When tightening the screws, check that the needle plate is
horizontal.

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3.1.4
Adjusting the needle
Attention!
Switch off machine electrically!
The needle is adjusted in a lateral direction so that it is situated centrally in
relation to the needle plate (i.e. between the two screw holes).
3.1.5 The needle slide plate is attached to the top of the needle plate. It can be
removed by slackening the screw (1).
Replacing the needle slide plate (Fig. 2)
The channel of the needle of the needle slide plate should be centred on the
needle.
Fig. 2

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3.2
Needle lever
Attention!
Switch off machine electrically!
3.2.1 After removing the head cover and the thread tension adjustment button, the
needle lever must be turned down so far, that the eccentric bolt (1) can be
reached with a screw driver through the hole provided in the head. Once the nut
(6) has been slackened, the needle lever path is corrected by turning the bolt
(at the rear).
In this case, the distance between the shuttle point (for normal loop stroke and
position above the centre of the needle) and the end of the needle eye turned
towards it, must be 1.8 ±0.2 mm.
Setting the needle lever path (Fig. 1)
3.2.2 The needle lever is set so that the needle is located centrally in relation to the
needle plate.
Adjustment can only be carried out by moving the bearing bushes (3) and (2) in
the head, to the side (by tapping gently).
(See also point “
Lateral adjustment of the needle lever (Fig. 1)
3.1.4 Adjusting the needle”)

14 MA_218D-TP-R_A4_181015_en
3.3 Stroke of loop means the needle race from its lowest position to the spot where
the lower point is placed on top of the center of the needle.
Stroke of loop
3.3.1
Setting the needle stroke (Fig. 3)
Attention!
Switch off machine electrically!
Normally is a loop stroke of 2.8 mm. If it is necessary to change the loop stroke,
then slacken the two screws in the toothed wheel, (1) at the rear of the head
(Fig. 3). By turning this toothed wheel, the shuttle can be set so that it takes
hold of the thread loop earlier or later. When tightening the two screws, check
for normal play between the bevel wheels. If the loop stroke is altered, then the
needle lever almost always has to be readjusted.
Fig. 3

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3.4
3.4.1
Looper
Removing and re-mounting the looper (Fig. 3 + Fig. 4)
Attention!
Switch off machine electrically!
Dismantle the following parts:
Cover (rear of head), needle, needle plate, angle lever (2) (Fig. 4) with bolt (5)
and spring (1) (Fig. 4)and bevel wheel (2) (Fig. 3). The shuttle can now be
removed from the front.
Fitting in reverse order.
Ensure that the teeth of the bevel wheels marked red, (2) (Fig. 3) and (1)
(Fig. 3) and the surface of the shuttle shaft form one line again when
assembled.
Fig. 4

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3.4.2 The gap between the shuttle tip and a 90 needle must max. 0.2 mm. Setting the shuttle in relation to the needle (Fig. 5)
If it is necessary to adjust the shuttle, then this is done by slackening the
cylinder head screw (1) and turning the eccentric bushing (2).
Fig. 5
3.4.3 If a thread has become jammed between the bobbin case and shuttle, the
bobbin case must be removed, otherwise the machine will be slowed down.
This will entail removing the shuttle - see point “
Removing and fitting the bobbin case (Fig. 5)
3.4.1 Removing and re-
mounting the looper (Fig. 3 + Fig. 4)”.
Once the screws (1) have been slacked, the shuttle cover (3) can be removed.
The bobbin case on the bobbin retaining flap (2) is then turned to position C
whereupon it is pulled out of the shuttle.
When replacing, ensure that the bobbin retaining flap (2) points in the direction
of the shuttle point (C).
Fig. 6