Brother BAS-342G PS Assembly instructions

BAS-342G
DIRECT DRIVE
PROGRAMMABLE ELECTRONIC PATTERN SEWER
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
This basic operation manual describes basic
operations including sewing machine operations.
For cleaning, standard adjustments and more details,
please refer to the instruction manual contained in
the Document CD.
Basic Operation Manual

BAS-342G
Thank you very much for buying a BROTHER sewing machine. Before using your new machine,
please read the safety instructions below and the explanations given in the instruction manual.
With industrial sewing machines, it is normal to carry out work while positioned directly in front of
moving parts such as the needle and thread take-up lever, and consequently there is always a
danger of injury that can be caused by these parts. Follow the instructions from training personnel
and instructors regarding safe and correct operation before operating the machine so that you will
know how to use it correctly.

BAS-342G i
SAFETY INSTRUCTIONS
[1] Safety indications and their meanings
This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure
safe operation of this machine and to prevent accidents and injury to yourself or other people.
The meanings of these indications and symbols are given below.
Indications
DANGER The instructions which follow this term indicate situations where failure to follow the
instructions will result in death or serious injury.
CAUTION The instructions which follow this term indicate situations where failure to follow the
instructions may result in minor or moderate injury.
IMPORTANT The instructions which follow this term indicate situations where failure to follow the
instructions may result in physical damage to equipment and surroundings or result in
problems with equipment operation.
Symbols
･･････ This symbol ( ) indicates something that you should be careful of. The picture inside the triangle
indicates the nature of the caution that must be taken.
(For example, the symbol at left means “beware of injury”.)
･･････ This symbol ( ) indicates something that you must not do.
･･････ This symbol ( ) indicates something that you must do. The picture inside the circle indicates the
nature of the thing that must be done.
(For example, the symbol at left means “you must make the ground connection”.)

BAS-342G
ii
[2] Notes on safety
DANGER
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet
before opening the cover of the control box. Touching areas where high voltages are present can result in severe
injury.
CAUTION
Environmental requirements
Use the sewing machine in an area which is free from
sources of strong electrical noise such as electrical
line noise or static electric noise.
Sources of strong electrical noise may cause
problems with correct operation.
Any fluctuations in the power supply voltage should
be within ±10% of the rated voltage for the machine.
Voltage fluctuations which are greater than this may
cause problems with correct operation.
The power supply capacity should be greater than the
requirements for the sewing machine's power
consumption.
Insufficient power supply capacity may cause
problems with correct operation.
The pneumatic delivery capability should be greater
than the requirements for the sewing machine's total
air consumption.
Insufficient pneumatic delivery capability may cause
problems with correct operation.
The ambient temperature should be within the range
of 5°C to 35°C during use.
Temperatures which are lower or higher than this
may cause problems with correct operation.
The relative humidity should be within the range of
45% to 85% during use, and no dew formation should
occur in any devices.
Excessively dry or humid environments and dew
formation may cause problems with correct operation.
In the event of an electrical storm, turn off the power
and disconnect the power cord from the wall outlet.
Lightning may cause problems with correct operation.
Installation
Machine installation should only be carried out by a
qualified technician.
Contact your Brother dealer or a qualified electrician
for any electrical work that may need to be done.
The sewing machine weighs approximately 160 kg.
Use equipment such as a crane or hoist when
installing the machine head and adjusting the height
of the table.
If you try to lift the machine head yourself, it may
cause injuries such as back injury.
Do not connect the power cord until installation is
complete. If the foot switch is depressed by mistake,
the sewing machine might start operating and injury
could result.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
In addition, do not subject the machine head to extra
force while it is tilted back. If this is not observed, the
machine head may become unbalanced and fall
down, and serious injury or damage to the sewing
machine may result.
Be sure to connect the ground. If the ground
connection is not secure, you run a high risk of
receiving a serious electric shock, and problems with
correct operation may also occur.
All cords should be secured at least 25 mm away
from any moving parts. Furthermore, do not
excessively bend the cords or secure them too firmly
with staples, otherwise there is the danger that fire or
electric shocks could occur.
Install the safety covers to the machine head and
motor.
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Use a table with a height of 84 cm or less. If the table
is too high, the machine head may become
unbalanced and fall down, and serious injury or
damage to the sewing machine may result.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they
do not get into your eyes or onto your skin. If the oil
and grease get into your eyes or onto your skin,
inflammation can result.
Furthermore, do not drink or eat the lubricating oil or
grease. They may cause diarrhea or vomiting.
Keep the oil out of the reach of children.

BAS-342G iii
CAUTION
Sewing
This sewing machine should only be used by
operators who have received the necessary training
in safe use beforehand.
The sewing machine should not be used for any
applications other than sewing.
Be sure to wear protective goggles when using the
machine.
If goggles are not worn, there is the danger that if a
needle breaks, parts of the broken needle may enter
your eyes and injury may result.
Turn off the power switch at the following times. If the
foot switch is depressed by mistake, the sewing
machine might start operating and injury could result.
•When threading the needle
•When replacing the bobbin and needle
•When not using the machine and when leaving the
machine unattended
If using a work table which has casters, the casters
should be secured in such a way so that they cannot
move.
Attach all safety devices before using the sewing
machine. If the machine is used without these
devices attached, injury may result.
Do not touch any of the moving parts or press any
objects against the machine while sewing, as this
may result in personal injury or damage to the
machine.
If an error occurs in machine operation, or if abnormal
noises or smells are noticed, immediately turn off the
power switch. Then contact your nearest Brother
dealer or a qualified technician.
If the machine develops a problem, contact your
nearest Brother dealer or a qualified technician.
Cleaning
Turn off the power switch before carrying out
cleaning. If the foot switch is depressed by mistake,
the sewing machine might start operating and injury
could result.
Be sure to wear protective goggles and gloves when
handling the lubricating oil and grease, so that they
do not get into your eyes or onto your skin. If the oil
and grease get into your eyes or onto your skin,
inflammation can result.
Furthermore, do not drink or eat the lubricating oil or
grease. They may cause diarrhea or vomiting.
Keep the oil out of the reach of children.
Maintenance and inspection
Maintenance and inspection of the sewing machine
should only be carried out by a qualified technician.
Ask your Brother dealer or a qualified electrician to
carry out any maintenance and inspection of the
electrical system.
Turn off the power switch and disconnect the power
cord before carrying out the following operations. If
the foot switch is depressed by mistake, the sewing
machine might start operating and injury could result.
•Inspection, adjustment and maintenance
•Replacing consumable parts such as the rotary hook
Disconnect the air hoses from the air supply and wait
for the needle on the pressure gauge to drop to “0”
before carrying out inspection, adjustment and repair
of any parts which use the pneumatic equipment.
Hold the machine head with both hands when tilting it
back or returning it to its original position.
In addition, do not subject the machine head to extra
force while it is tilted back. If this is not observed, the
machine head may become unbalanced and fall
down, and serious injury or damage to the sewing
machine may result.
If the power switch and air need to be left on when
carrying out some adjustment, be extremely careful to
observe all safety precautions.
When replacing parts and installing optional
accessories, be sure to use only genuine Brother
parts.
Brother will not be held responsible for any accidents
or problems resulting from the use of non-genuine
parts.
If any safety devices have been removed, be
absolutely sure to re-install them to their original
positions and check that they operate correctly before
using the machine.
To prevent accidents and problems, do not modify
the machine yourself.
Brother will not be held responsible for any accidents
or problems resulting from modifications made to the
machine.
IMPORTANT
Do not allow any liquids to get onto this sewing machine, otherwise smoke or fire may occur.
If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and
disconnect the power plug from the electrical outlet, and then contact the place of purchase or a qualified technician.

BAS-342G
iv
[3] Warning labels
The following warning labels appear on the sewing machine.
Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are
difficult to read, please contact your nearest Brother dealer.
1
2a
NOTE:
Either the 2a or the 2b label is displayed on the sewing
machine.
*Safety devices
Devices such as eye guard, finger guard, thread take-up cover,
motor cover, X motor cover, tension release solenoid cover,
inside cover, outside cover, middle cover, fixed cover and rear
cover
2b
3
4
5
Be careful to avoid getting hands caught in sliding parts.
Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving
a serious electric shock, and problems with correct operation may also occur.
Direction of operation

BAS-342G v
2560B
Thread take-up cover
Finger guard
Inside cover R
Outside cover
Fixed cover
Eye guard
Middle cover
Rear cove
r
Rear cover
Tension release solenoid cover
Motor cover
Rear cove
r
Inside cover L
Outside cover
Fixed cover
Middle cove
r
X motor cover

BAS-342G
CONTENTS
1. NAMES OF MAJOR PARTS ................ 1
2. USEFUL FUNCTIONS
FOR OPTIMUM SEWING ..................... 2
3. TABLE PROCESSING DIAGRAM ....... 3
4. INSTALLATION.................................... 4
4-1. Removing the machine head fixing bolts [1]..... 4
4-2. Installing the control box [2].............................. 5
4-3. Installing the oil pan and support lever base.... 6
4-4. Installing the machine head.............................. 6
4-5. Tilting back and returning the machine head ... 7
4-6. Installing the gas spring.................................... 8
4-7. Installing the operation panel [3]....................... 9
4-8. Installing the solenoid valve assembly ............. 10
4-9. Connecting the air tubes [4].............................. 10
4-10. Installing the air hose [5]................................. 10
4-11. Adjusting the air pressure [6].......................... 11
4-12. Adjusting the speed controller [7] ................... 11
4-13. Connecting the cords [8]................................. 12
4-14. Connecting the ground wire [9] ...................... 14
4-15. Securing the cords and air tubes [10]............. 15
4-16. Installing the eye guard [11] ........................... 16
4-17. Installing the cotton stand [12]........................ 16
4-18. Lubrication [13] ............................................... 17
4-19. Connecting the power cord [14] ..................... 18
4-20. Checking the safety switch [15] ...................... 18
5. PREPARATION BEFORE SEWING.....19
5-1. Installing the needle.......................................... 19
5-2. Operating the 2-pedal foot switch..................... 19
5-3. Threading the upper thread .............................. 20
5-4. Winding the lower thread.................................. 22
5-5. Installing the bobbin case ................................. 23
5-6. Thread tension.................................................. 24
5-6-1. Lower thread tension.............................. 24
5-6-2. Upper thread tension.............................. 24
5-7. Home position detection ................................... 25
6. USING THE OPERATION PANEL
(BASIC OPERATIONS) .......................26
6-1. Name and function of each operation
panel item..........................................................26
6-2. Loading sewing data .........................................28
6-3. Setting the program number .............................28
6-4. Setting the X-scale and Y-scale........................29
6-5. Setting the sewing speed..................................29
6-6. Checking the sewing pattern.............................30
6-7. Setting the height of the intermittent presser foot...31
6-8. Notes on handling CF cards (sold separately) ...32
7. SEWING ...............................................33
7-1. Sewing ..............................................................33
7-2. Using the STOP switch .....................................34
7-3. Using the thread wiper switch ...........................34
Document CD ...........................................36

1. NAMES OF MAJOR PARTS
BAS-342G 1
1. NAMES OF MAJOR PARTS
(1) STOP switch Safety devices:
(2) CF slot (12) Finger guard
(3) Power switch (13) Eye guard
(4) Work clamp switch (14) Thread take-up cover
(5) Start switch (15) Motor cover
(6) Control box
(7) Solenoid valve
(8) Operation panel
(9) Thread wiper switch
(10) Pulley
(11) Cotton stand
CFTM is a trademark of SanDisk Corporation.
2561B

2. USEFUL FUNCTIONS FOR OPTIMUM SEWING
BAS-342G
2
2. USEFUL FUNCTIONS FOR OPTIMUM SEWING
2914B
2555Q
Two types of work clamp dropping operation
INSTRUCTION MANUAL CD 5-8. Setting 2-step operation for the work clamp
7-2. Setting memory switches
7-3. List of memory switch settings
You can select one of two different types of dropping operation for
the work clamp (2) by changing memory switch settings.
<Work clamp dropping in one step>
When the work clamp switch is depressed, the work clamp (2)
drops in one movement from its highest position A to its lowest
position C.
<Work clamp dropping in two steps>
1. When the work clamp switch is depressed to the 1st step, the
work clamp (2) drops from its highest position A to the
intermediate position B.
2. When the work clamp switch is then depressed to the 2nd
step, the work clamp (2) drops to its lowest position C.
Easy threading in threading mode
Page 21
When using threading mode for threading, the tension
discs will open so that the thread can be threaded
more easily.
Furthermore, threading mode is safe because the
sewing machine will not start even when the foot
switch is depressed.
A
djusting the driver needle guard is simple
and within close reach.
The driver needle guard (1) can be adjusted easily
and within close reach without tilting back the
machine head.
INSTRUCTION MANUAL CD
11-5. Adjusting the driver needle guard
Presser foot height can be set easily using the panel
l
Page 31
INSTRUCTION MANUAL CD
7-7. Using user programs
The height of the presser foot can be set simply by
entering a numeric value at the panel, without the
need for tools.
Furthermore, you can use user programs to set the
presser foot height to the desired height separately
for each sewing program.
4057M