TOWA TM-501 User manual
From the Library of Superior Sewing Machine & Supply LLC
{Y)
9141a.
,,,
A
BOBBIN
CASE
DIGITAL
TENSION
GAUGE
Service Manual
Thank you for purchasing our product. Please read this instruction manual before using the
Bobbin Case Tension Gauge.
[LOW] Lamp [LOW] Lamp Display Screen
[mN/gf]
Switch
[mN/gf]
Switch
Pulley
No
. 2
Pulley
No
. 3
Pulley
No
. l
[mN]
Lamp
[gf]
Lamp
[ON/OFF] Switch
Th
read Cutting Groove
Thread Holding
Pin
Thread Guide
Bobbin
Case
Holder
Exchangeab
le
. Please check section 2 below
LOW Lamp: When this light
is
on, the battery
is
low.
Please change the batteries soon
(3
AAA
batteries facing the correct. direction)
mN
Lamp: When this light
is
on, the measurement unit
is
set to [mN].
gf
Lamp: When this light
is
on, the measurement unit
is
set to [gf].
Display Screen: Usually displays the tension reading.
In
case of any irregularity, it will display
one ofthe readouts below:
[OF]: The maximum "plus" value was exceeded.
[ -
]:
Indicates "sleep" mode.
TM-501
TM-502 BC-DB1, BC-DBZ
BC-DBM
How
to
switch bobbin cases
Industrial Use Rotary Types
All Large Types
1-
Push down the movable clasp and release the bobbin case
holder.
2-
Insert a new bobbin case into the fixed clasp and push it into
the movable clasp
to
complete the operation.
From the Library of Superior Sewing Machine & Supply LLC
{Y)
9141a.
,,,
A
BOBBIN
CASE
DIGITAL
TENSION
GAUGE
1- Hold the [ON/OFF] switch for over 7 seconds to turn the
device
on
or off.
2- Use the [mN/gf] switch to choose the desired
measurement range.
3- Press the [ON/OFF] switch again to reset.
4- Insert a threaded bobbin into the bobbin case and pull the
thread out
of
the tension spring. Set the bobbin case by
matching the pointed end
of
the latch with the bobbin case
stopper. After threading the thread through pulley #1, #2,
#3 and the thread guide, carefully pull the thread to the
right. At this time the digital display should begin to show
the thread tension.
5- Adjusting the thread tension: Turn the bobbin case
adjustment screw to adjust the tension to the desired
amount.
6- Cutting away extra thread: After measuring and adjusting
the thread tension, keep holding down the unneeded
thread at the thread guide and insert
it
into the thread
cutting groove, then push down to cut
it
off.
7- After finishing measurement, hold the [ON/OFF] switch for
approximately 1-2 seconds to turn the device off.
• If the device
is
left alone for 50 seconds after
measurement, if will go into sleep mode
[-]
and 5 minutes
after that
it
will automatically shut off.
• Pressing the [ON/OFF] switch or touching pulley #3 while
the device
is
n sleep mode will turn the device back on.
1- Thread the needle thread through pulley #3, then
through the thread guide. Next wrap the needle thread
around the thread holding
pin
(2-3 times) and hold the
en
of
the thread against the device body with your finger to
keep
it
in
place. While doing
so,
measure the thread
tension.
1- As this device
is
a precise measuring apparatus that has been carefully tested and adjusted, please do not
drop
it,
hit
it
against anything or disassemble
it.
2- There are several adjustments necessary for garment sewing. Among them
is
the measuring
of
thread
tension
of
the under thread
in
the bobbin case before starting any sewing work when the material or cloth to
be
sewn has been changed to a new one.
3- Please keep this device away from thinner oil, benzine oil, alcohol or petroleum.
This manual suits for next models
1
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