Duerkopp Adler 1180i-5 Instructions For Service Manual
Text of the manual
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3.10.2 Replacing the indented belt
To observe: in machines with Mini-stop first remove the driving
toothed belt as instructed in par. 3.12.
When replacing the indented belt, the mutual position of the
pulleys (4 and 5) should be maintained.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Remove the handwheel, the belt guard and the V-belt.
- Remove the retaining ring (1) and remove the backtacking
lever (2).
- Mark with a pencil the instantaneous position of the
indented pulleys against the machine head in any position.
- Remove the indented belt (3) from the bottom indented
pulley (4) first, and then remove the whole belt.
- Apply a new indented belt on the top indented pulley (5)
first.
- Turn both indented pulleys in the formerly marked positions
and apply the indented belt on the indented pulley (4).
- Tension the belt and mount the dismantled components in
the inverse order.
3.11
V-belt, motor - head
3.11.1
Tensioning
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
The belt is correctly tensioned, when the opposite sides of
the belt approach one to another by up to 20 mm in applying
the force of 10 N. The belt is tensioned in turning respectively
the motor in its holder.
3.11.2
Replacing the V-Belt
Caution! Danger of injury!
Switch off the main switch! before starting the
setting operation, wait until the motor stops!
- Loosen the screw (1) of the positioner arrest (2) and tilt the
arrest.
- Unscrew the screws (3) of the handwheel.
- Unscrew the screws (4) of the belt guard and tilt the guard.
- Remove the belt guard of the motor and tilt the protections
against falling out the belt from the motor pulley.
- Replace the belt.
- Tension the belt (see par. 3.11.1).
3.12
Driving toothed belt
3.12.1
To exchange the driving toothed belt
Caution! Danger of injury!
Switch off the main switch! before starting the
setting operation, wait until the motor stops!
- Remove the machine head from the stand (uncouple the
motor cables, the machine head cable and screw off the
wood screw and the screw from the hinges).
- Remove the belt guard (1).
- Replace the belt (2).
3
2 1
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5
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10 N
10 N
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4.7 Setting the retaining spring of the hook thread
The retaining spring (1) holds the hook thread after having
performed the trimming. It is to be set in such a way that the
force necessary for pulling out the thread from the retaining
spring (1) is approximately equal to the force necessary for
pulling out the thread from the hook.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Shape the retaining spring (1) in such a way that it fits close
with all its surface (without wedge) onto the moving trim-
ming knife (4).
- Shape the retaining spring in such a way that with mode-
rately tightened screws (2) it comes to lean against the
moving trimmer knife with a pre-load corresponding to the
force required to draw the thread out of the spring.
The pulling force is tested using a screwdriver according to
the illustration.
Caution!
The setting of the retaining spring (1) depends on
the setting of the hook thread tension and differs
then according to the respective sewing category.
4.8 Setting the switching of electromagnets
The electromagnets of the trimming device and loosening of
the tensioner must work in accordance with the diagram. This
is ensured by setting the stopmotor (see the instructions for
use of the stopmotor).
1- 1. position of the needle (135 on the handwheel)
2- 2. position of the needle (64 on the handwheel)
3- position of stopping the tensioner (10 ÷ 25 on the hand-
wheel)
4- movement of the pickup roller
5- current of the trimming device electromagnet
6- current of the tensioner loosening electromagnet
5. Lifting the top roller by electromagnet
5.1 Description
The core of the electromagnet, respectively its pin must be set
in such a way that the presser foot lifting is enabled.
5.2 Setting the electromagnet pin
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Unscrew the cap of the core (1) of the electromagnet.
- Shift the core (2) with the pin (3) and unscrew the locking
screw (4).
- Unscrew the pin (3) in the core (2) in the “A” direction up to
the stop.
- Push the core (2) into the magnet (5) in the “B” direction
up to the stop.
- In this position, set the maximum top roller lifting in the “B”
direction.
- Screw on and tighten the arresting screw (4).
- Screw on the cap (1).
1
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5
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