Pfaff 3516-1/25 User manual

Instruction book
Pfaff 3516-1/24;
-1/25;
-1/24-928/01;
-1/25-928/01;
-1/28-928/01
No. 29M2-13 097 engl. HO 97^
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Contents
Page
General Instructions
1. flaking the machine ready for operation 3
2. Inserting the needle 3
3. Winding the bobbin 4
4. Removing the bobbin case 7
5. Inserting the bobbin 7
6. Regulating the bobbin thread tension ^
7. Inserting the bobbin case 8
8. Threading the needle 8
9. Regulating the needle thread tension 11
10. Inserting and removing the dart blade 11
11, Enlarging the dart depth 12
12. Setting and changing the dart length 1
selector
o
13. Adjusting the front position stop of the
dart blade 13
14. Sewing 13
15* Switching off the machine l4
16. Needle and thread breakage 17
17. Machine care 17
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Additional Instructions
^ Page
18, Additional instructions for the
Pfaff 3516-1/2^ and -1/25 21
18.1. Threading the needle (Pfaff 463 sewing head
with new-type thread monitor)
19• Additional instructions for the 23
Pfaff 3516-1/24-928/01 and -1/25-
928/01
19»1* Winding the bobbin (Pfaff 433 sewing head)
2O0 Additional instructions for the Pfaff 3516 24
-1/25 and -1/25-928/01
20.1, Switching on the start and finish bar tacks
21. Additional instructions for the Pfaff
3516-1/28-928/01
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General instructions
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' V
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1» Making the machine ready for operation (Fiia:s« 1 and 2)
1.1. Compressed air (Fig, l)
It is best to switch the air supply on and off
at the main line rather than at the conditioning
unit •
Open the valve at the main line and check at con
ditioning unit 1 whether presstire gauge 2 indi-
cates a working pressure of 6 kg/cm . If neces
sary, adjust this pressure at pressure regulating
valve 3.
V.^henever you switch on the machine, make sure to
check the oil and water levels in conditioning
unit lo The oil level must not drop below mark
and the water level must not rise above mark
5.
For further details, please refer to Section 17
"Machine care".
1.2. Electric power (Fig. 2)
Tress the black button of master switch 6. The
machine is now ready for operation.
2. Inserting the needle
Switch toggle switch 7 (Fig. 2) to L-i—^ .
As a result, the work holder bar is lowered and
the needle bar raised to its highest point.
If a needle has already been inserted, remove it
as follows: Hold it between thumb and forefinger
and loosen the needle set screw. Tiieii pull the
needle out of the needle holder.
The automatic dart sewer uses only System 13^ kK
needles in sizes 90f 1^0 and 110.
When inserting a new needle, push it up as far
as it will go and tvirn it so that its long groove
faces toward the front. Then tighten the needle
set screw.
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3• Winding the bobbin (Pfaff ^63 sewing head)
In order to avoid unnecessary interruptions of the
sewing operation it is advisable to have a full bobbin
available at all times.
Important note
Pfaff 3516-1/?!^-928/01 and -1/23-928/01 machines
are equipped with a different bobbin winder. Its
operation is described in Section 19.
3.1« Threading the machine for bobbin winding (figs. 3 and
Pass tlie thread from spool (Fig. 3) through a hole
of the upper thread 9, through guide 10 (Fig. ^), through
both holes of thread guide 11 and clockwise around
tension 12. Then wind a few turns of thread clockwise on
bobbin 13.
3o2. Regulating the thread tension (Fig. 4)
The thread tension is regulated by turning knurled
disc l^u Turn this disc cloclcwise to decrease the
tension, or counter-clockwise, to increase it.
For sewing monofil and transparent threads reduce
the tension to a minimum.
30. Adjusting and starting the bobbin winder (Fig, k)
Tension 12 should be so adjusted that the thread
runs onto the middle of the bobbin. This ensures
an even distribution of the thread on the bobbin.
If adjustment is required, this will be carried
out by a mechanic.
To adjust the amount of thread to be wound on the
bobbin, loosen screw 15 and adjust stop dog l6
vertically.
Set the stop dog higher for more thread, or lower
for less thread. After the adjustment, tighten
s cr ew 15.
Push down stop dog l6 to start the bobbin winder.
If resistance is felt, turn the bobbin slightly.
The bobbin winder stops automatically when the
desired amount of thread has been wound on the bobbin.
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I
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^• Removing the bobbin case (Fig. 3)
Switch toggle switch 7 (Fig. 10) to I ••• I and
open cover 17 at the front of the machine (Fig. 5).
Open latch l8 (Fig. 5) and pull the bobbin case
out of the sewing hook with thumb and forefinger
of your left hand. As long as you hold the bob
bin case by its open latch, the bobbin cannot
fall out.
5• Inserting the bobbin (Fig. 6)
Insert the full bobbin into the bobbin case so
that the bobbin turns in the direction indicated
by an arrow when you pull the thread.
Hold the bobbin fast and pull the thread into
slot 19 and under the tension spring until it
emerges at its rear end 20.
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8
6. he.gulatin.g: the bobbin thread tension (Fig. 7)
Turn screw 21 clockwise to increase the thread tension,
or counter-clockwise, to decrease it.
The final tension regulation depends on the appear
ance of the finished seam. Both tensions should
be balanced properly so that the needle and bobbin
threads interlock in the center of the material
(Fig, 8).
7 o Inserting the bobbin case (Fig. 3)
Open the latch l8 of the bobbin case. This keeps the
bobbin from falling out of the case. Hold the latch
between thumb and forefinger, insert the bobbin case
into the sewing hook and close the latch. Push lightly
against the bobbin case until you hear it snap into
placcc Then close cover 1? at the front of the machine.
Threading the needle on machines equipped with
Pfaff 463 sewing head (Fig, 9)
Switch toggle switch ? (Fig, 10) to fr—. As
a result, the needle is raised to its highest point
for easy threading.
Important note
For threading machines fitted with a different
thread monitor, please refer to the Additional
Instructions at the end of this booklet.
Pass the thread from spool 22 through a hole of
the upper thread guide 9 (Figo 3), through the
hole of thread guide 23 and the three holes of
thread guide 2ko Then draw it into thread retainer
25 (to do this, push the spring-loaded sleeve 26
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to the left slightly), from below between
tension discs 27, over thread check spring 28,
under thread regulator 29, through thread eyelet
30 and from right to left through the hole of
"t^ke—up lever 31* Lead the thread through thread
eyelet 30 so that finger 32 of the thread
monitor is held by the thread. Now pass it through
thread eyelet 33 and thread the needle from left
to right.
Draw abt. 2 inches of thread through the needle
eye to prevent unthreading of the needle when
sewing begins.
In order to keep the tension as low as possible
when using monofil and transparent threads, pass
these threads through one hole of thread guide
2.k only.
9• Regulating the needle thread tension (Fig. 9)
The needle thread tension is regulated by turn
ing nut 3^» The amount of tension set is indi
cated on a scale.
The final tension regulation depends on the ap
pearance of the finished seam (see Section 6).
10• Inserting and removing the dart blade (Fig. 10)
10.1. Insertion
10.1.1. Push dart blade 35 with its two guide studs
into bracket 36 as far as it will go.
10.1.2. Loosen knob 71 and pull bracket 36 forward
as far as it will go. Then tighten the knob
again.
10ol.3* The machine will now sew the dart at the depth
and length determined by the dart blade.
11
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12
10.2, Removal
10.2,1. Push lever 37 backwards and pull dart blade
35 forward out of bracket 36.
11 • Enlarsin.g; the dart depth (FIk, 10)
11.1, Dart blade 35 can be turned through 7^ by
bracket 36 to the rear. This makes it possible
to enlarge the dart depth within certain limits with
every dart blade used. However the dart length r©mains
unchanged,
11-1,1, Loosen knob 71 and push bracket 36 back the required
distance. Then tighten the knob again.
12.
12.1. Setting
s-etting and changing the dart length selector (Fig. 11) -
The hexagonal dart length selector is marked
with numbers 1 through 6 at its right end.
Every number stands for a certain dart length
To make sure that the correct dart length is
selected for every dart blade used, all dart
blades are numbered accordingly.
To set dart length selector 38 at the correct
dart length, turn knob 39 until the number
indicated on the dart blade is at the top.
12.2, Changing
owitch the machine off by pushing the red button
of master switch 6 (Fig, 13),
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Lift ball stud 'lO and pull knob 39 towards the right.
Swing the rectangular end of the hexagonal bar out
^ of support 'il and pull dart length selector 38 to
the right out of bearing bracket
Push the new dart length selector into the left
bearing bracket swing the rectangular end of
the hexagonal bar back into support 'il, and push
knob 39 toward the left again.
Then switch on the machine and set the dart length
selector as instructed in Section 12.1.
13. Ad.justing the front position stop of the dart blade
In order to avoid that the dart blade has to travel
the full length of its stroke, regardless of the
depth of the dart being sewn, the front end of its
stroke can be set at four different distances from
the front edge of the table.
Press pedal 43 (Fig# 13) down to its first switch
position. This causes the dart blade to move to
its central position. Now turn knob 44 (Fig. 10)
and engage the stop most suitable for the respec
tive dart depth.
Care should be taken, however, that there is suf
ficient space between tabletop and dart blade in
its foremost position to allow the workpiece to be
slipped onto the blade without difficulty.
• Sewing
Before you start sewing, check to make sure that
toggle switch 7 (Fig. 13) is at I I .
l4.1. Sewing with dart blade at front position
l4.1.1. Switch toggle switch 45 (Fig, 13) to
14.1.2. Slip the workpiece onto the dart blade as il
lustrated in Fig. 12, and press pedal 43 (Fig. 13)
down to the first switch position. As a result, the
dart blade moves to its central position. When the
pedal is released, the dart blade again returns to
its front position. This process can be repeated any
number of times to reposition the workpiece.
13
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14
Start the machine by pushing pedal ^3 (Fig* 13)
down as far as it will go. The workpiece is
clamped between work holder bar ^i6 and carrier
strip k7 and pulled toward the right off the
dart blade.
Shortly before the work holder bar reaches the end
of its travel, its speed is reduced, the sewing machine
is started, and the bartack sewn.
At the extreme right of its travel, the work holder
bar reverses its direction of feed, the dart blade
returns to its front position and the dart is sewn,
1^,1,6, Remove the sewn part from the machine, stack it, slip
the next workpiece onto the dart blade and depress the
pedal again,
1^*2, Sewing with dart blade at rear position
1^,2,1, Switch toggle switch 45 (Fig, 13) to
14.2,2, With the toggle switch in this position, the work
cycle up to par, 14,1,5* is the same as that described
for sewing with dart blade at front position.
However the dart blade does not return to its front
position right away, but first moves to its rear
position•
Only after the sewing cycle has been completed and
the work holder bar has released the workpiece does
the dart blade return to its starting position (front
position),
15* Switching off the machine (Fig, 13)
When the red button of master switch 6 (Fig, 13)
is pressed, the machine is switched off instantly.
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47 46
12
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13
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16• Needle and thread breakage
V;hen the needle or the thread breaks, the red lamp
in thread monitor ^8 (Fig, 12) lights up. The sewing
cycle, however, is not interrupted. When the machine
has completed its cycle, switch toggle switch 7
(Fig. 13) to
Then insert a new needle, as instructed in
Section 3, or rethread the needle according to the
instructions given in Section 9. After the trouble
has been eliminated, switch toggle switch 7 to
The machine is now ready for sewing again.
17• Machine care
Conditioning unit (Fig, l^i)
When the machine is constantly in use, check the
conditioning unit every day.
The oil level must not drop below mark , and
the water level must not rise above mark 5*
To drain the water, open drain screw '19 two to
three turns. When the water has been drained,
tighten drain screw ^9 securely again.
If required, have a mechanic top up the oil in
container 50•
17»2. Oiling the machine (Figs. 13 and 16)
There should be enough oil in the hook lubrica
tion system so that the oil level is located
between the two marks on oil sight glass 51
(Fig. 16). If required, top up the oil (Order
No. 28O-I-12O ikk) through hole 52.
On machines equipped with Pfaff ^63 sewing head,
apply a few drops of oil to the upper and lower
foam plastic pad of the needle bar at regular
intervals (see arrows in Fig, 15)*
17*3» Cleaning the hiachine
Regularly remove the lint. Clean the vicinity
of the sewing hook with a soft brush every day.
To get at the hook, open cover 17 (Fig. 5)
the front of the machine.
17
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