Yamato CC2700 User manual

P/N 6820007
No.1
Instruction Manual
ＣＣ２７００ class
Super High Speed Cylinder Bed Interlock Machine

INDEX
1. Installation １
1-1 Drawing of Table Top cut-out １
1-2 Semi-submerged Installation ２
1-3 Installing Belt Cover ２
２. Sewing Speed and Rotating Direction of Pulley ３
３. Motor and Belt ３
４. Lubrication Oil ４
4-1 Lubricaiton Oil ４
4-2 Feeding Oil ４
4-3 Oil Sight Gauge and Nozzle ４
4-4 Oil Change ４
4-5 Changing and Replacing Oil Filter ５
4-6 Cleaning the Machine ５
５. Proper Operation ６
5-1 Needles to be used and the Installation ６
5-2 Threading ６
5-3 Pressure of Presser Foot ７
5-4 Adjusting Presser Foot ７
5-5 Adjusting Stitch Length ７
5-6 Adjusting Differential Feed ８
5-7 HR Device and SP Device ９
６. Adjustment of Sewing Machine 10
6-1 Looper Thread Tension 10
6-2 Needle Thread Tension 10
6-3 Needle and Spreader 11
6-4 Timing Adjustment of Needle and Looper 12
７. Specifications 13

－1－
1. Installation
1-1 Drawing of Table Top cut-out
○Semi-submerged Installation

－2－
1-2 Semi-submerged Installation
Install the machine correctly referring to the illustration.
Set Screws on Supporting Board and set Supporting
Board on Machine Table. Then put Rubber Cushions on
Screws on which rest the machine securely.
1-3 Installing Belt Cover
Install Belt Cover as shown in the illustration.
Machine Table
Machine Frame
Rubber
Cushion
Supporting
Board
4㎜
Belt Cover

－３－
2. Sewing Speed and Rotating
Direction of Pulley
The maximum sewing speed of this machine is 6,000
rpm, and ordinary speed is 5,500 rpm (For the machine
with Puller, the max. speed is 4,500 rpm and ordinary
speed is 4,000 rpm)
When opera ting new machine, it is r ecommended for the
durability to operate at the speed of 5,000 rpm for the
initial 200 hours (about 1 month) then operate at the
ordinary speed.
The rotating direction of Pulley ① is clockwise like
Handwheel② as shown in the illustration.
3. Motor and Belt
Use a clutch motor of 3-phase, 2-pole, 400W(1/2 HP)
and a V-Belt of M-type.
Fix the position of motor so that the centers of Motor
Pulley and Machine Pulley align when Motor Pulley
shifted to the left by treadling Pedal.
rpm of machine
dia. of
Motor
Pulley 50 Hz 60 Hz
75 ㎜ 4,000 rpm
80 ㎜ 4,200 rpm
85 ㎜ 4,500 rpm
90 ㎜ 4,000 rpm 5,000 rpm
100 ㎜ 4,500 rpm 5,500 rpm
110 ㎜ 5,000 rpm 6,000 rpm
120 ㎜ 5,500 rpm
130 ㎜ 6,000 rpm
※ As the diameters of pulley available on general
market is intervals of 5 mm, the diameters shown in
the above table is the nearest to the calculated value.
②
①
61 ㎜
40°
Type "M" V-Belt
5.5 ㎜
10 ㎜

－4－
4. Lubrication Oil
4-1 Lubrication Oil
Use YAMATO SF OIL 28
4-2 Feeding Oil
As the oil in the machine is drained completely at the
time of shipment, replenish oil to the upper line of Oil
Sight Gauge② by removing Seal Plug① indicated "OIL"
before operating the machine without fail.
4-3 Oil Sight Gauge and Nozzle
Check Oil Sight Gauge ② before operating machine
everyday. If the oil surface is below the two lines, supply
oil.
Make sure that oil flows out of Nozzle③ at the start of
operation.
4-4 Oil Change
For the long life of machine, change lubrication oil
completely after 250 hours of initial operation.
Oil change should be made following the next
procedure.
1. After removing V-Belt from Motor Pulley, remove
Machine Head out of Machine Table.
2. Remove Screw④ and drain oil. At this time, be careful
not to smear V-Belt.
3. After draining, tighten Screw④ without fail.
4. When replenishing oil, refer to para "4-2 Feeding Oil".
③①
④
②

－5－
4-5 Changing and Replacing Oil Filter
When Oil Filter① is clogged with dust, proper
lubrication is not possible. Generally check Oil Filter
once every six months.
And, when no or very little oil comes out of Nozzle
though enough oil is in Oil Reservoir, check Oil Filter.
To check Oil Filter, remove Oil Filter Cap②. If it is
clogged with dust, renew it.
Note:When removing Oil Filter Cap, take care not to spill
oil sticking to Oil Filter.
4-6 Cleaning the Machine
Every day after operation, clean the machine to remove
dust and thread chips inside.
The cleaning should be made by opening Side Cover and
Front Cover and by using air gun and the like.
Remove rubber Seal Plug③ behind the machine and
remove dusts and others around Oil Filter Screen using
tweezers and air gun once a week or two.
When Oil Filter Screen is clogged, oil around Feed Bar
does not return to Oil Reservoir, resulting in splashing of
oil by Looper Thread Take-up.
O-ring
②
①
③

－６－
5. Proper Operation
5-1 Needles to be used and the Installation
Needle UY128GAS of Schmetz or Organ is to be used.
There are many sizes of needle, and the most suited
needle to the thickness and the kind of material should
be selected.
Japanese size 9 10 11 12 13 14
Metric size 65 70 75 80 85 90
Replacing needle should be made correctly with the
scarf facing rightly backward as shown in the
illustration.
5-2 Threading
Threading should be made correctly referring to the illustration.
Improper threading might cause skip stitch, thread breakage and uneven tension.
A, B, C … needle thread D … top cover thread E … looper thread
The threading for three needle machine is shown in the illustration below.
For two needle machine, threading is the same except two needle thread.
Easy threading is possible with the lifting up of Supporting Plate by pressing Lever(F).
After threading, return it back to the original position by pressing part(G) without fail.
AB C E
D
F
G
For Woolly Thread
×○×

－７－
5-3 Pressure of Presser Foot
To increase the pressure of Presser Foot, turn Adjusting
Screw② clockwise after loosening Lock Nut① and to
decrease turn it counterclockwise.
Pressure of Presser Foot should be as weak as possible
so long as Presser Foot can operate properly.
5-4 Adjusting Presser Foot
Adjust the right/left position of needle drop point of
Presser Foot③ to the center by loosening Screw④ and
moving the tip of Presser Foot left and right.
After the adjustment, tighten Screw④.
5-5 Adjusting Stitch Length
Adjustment of stitch length can be made steplessly from
1.4mm to 3.6mm.
The table below shows the stitch length, stitch number
per inch(25.4mm) and stitch number per 30mm.
stitch length
(mm)
stitch number
(per inch)
stitch number
(per 30mm)
3.6 7 8
2.4 10.5 12.5
1.4 18 21
❉Change of stitch length
Press Push Button⑤ with left hand lightly till the tip of
which contact to a part inside.
Keep pressing, turn Handwheel with right hand till
Push Button gets in. At this point, press in Push
Button strongly and turn Handwheel.
A graduation on the circumference of Handwheel
indicates a stitch length (mm), which should be aligned
with the Mark⑥, then release hand.
②
①
－
＋
④
⑤
⑥
③

－8－
5-6 Adjusting Differential Feed
Normal differential feed or reverse differential feed can
be set freely by turning Knob①.
As differential feed and main feed is driven individually,
when main feed amount (stitch length) is changed, the
differential ratio changes accordingly.
In this case readjustment is necessary.
The graduation shows the amount of differential feed.
For instance, in case the desired feed amount (stitch
length) is "2" and if the graduation is set at "2" by turning
Knob①, the differential ratio becomes 1:1.
When setting the graduation over "2", it becomes norma l
differential and setting it under "2", it becomes reverse
differential.
For the main feed amount the upper limit is "4".
✽When using Differential Feed Control Lever Fix
Differential Feed Control Lever at the desired position
with Nut ③ within the range from the position of
graduation on Lever when turning Knob① to Stopper
②.
At the time of using max. differential feed, turn Knob
① and set Lever at graduation "1".
For adjusting feed amount during operation, attach a
chain to the Lever.
※The range of differential ratio varies according to the
stitch length. Refer to the table below:
stitch length max. normal
differential
max.
reverse
differential
3.6㎜ 1:1.1 1:0.3
2.5㎜ 1:1.6 1:0.4
2.0㎜ 1:2 1:0.5
1.4㎜ 1:2.9 1:0.7
①
②③

－9－
5-7 HR Device and SP Device
Sometimes heat generated on the needle by the friction
with the material at high speed operation causes such
troubles as thread breakage, skip stitch and widening of
stitch hole especially when using synthetic threads and
fabrics.
To reduce these troubles, HR Device (needle point
cooling) and SP Device (needle thread oiling) are the
standard equipment for this machine.
Using oil of sylicone system is most effective.
Note 1: Open Lid① of HR Container and Lid② of SP
Container and check the oil.
If it is running short, supply it.
Note 2: Though it is recommended to use HR and SP
Devices, when they are not used judging from
the sewing condition, remove Felt because it
might be better for the needle and thread not to
touch the dry Felt.
①
②

－10－
6. Adjustment of Sewing Machine
6-1 Looper Thread Tension
Align Mark① of Supporting Plate and thread holes of
Thread Eyelet② and ③.
That is the standard adjustment.
To increase take-up amount of looper thread, move
Looper Thread Eyelet forward after loosening screws of
Thread Eyelet② and ③, and to decrease move them
backward.
Note: Too much take-up amount of looper thread will
cause skip stitch.
When using wooly thread, move Thread Eyelet② and ③
all the way forward and don't pass the thread between
Supplementary Tension Discs④.
6-2 Needle Thread Tension
It is not so easy to make loop for some kind of thread.
This makes it difficult for Looper to catch the needle
thread, causing skip stitch.
In such a case, pass the needle thread through
Supplementary Tension Disc ⑤ as shown in the
illustration.
In case the formation of needle thread loop is unstable
when using stretchable thread like synthetic thread, use
Needle Thread Guide.
With Needle Bar at the lowest position, the center of
thread hole of Needle Bar Thread Eyelet⑥ should be
even with the surface of Needle Thread Guide⑦; and ⑥
and⑦ should be parallel with each other.
That is the standard condition.
The adjustment of the height and left/right position of
Needle Thread Guide⑦ is made by loosening Screw⑧
and moving Needle Thread Guide⑦ up and down; and
left and right.
②③
①
①
④
⑤
⑥
⑦
⑧

－11－
6-3 Needle and Spreader
(1) Installing Spreader
Provide a clearance of 0.5 － 0.8mm between left
needle and the tip of thread hooking part② of
Spreader① when Spreader moves to the left.
Give the distance of 4.5－5.5mm from the center of
left needle to the thread hooking part② when
Spreader comes to the extreme left.
The height from the surface of Stitch Plate up to the
undersurface of Spreader① should be 8.5－9.5mm.
The adjustment is made by loosening Screw ③ of
Spreader and Screw④ of Spreader Holder.
(2) Installing Top Cover Thread Guide
Provide a clearance of 0.5mm between undersurface
of Top Cover Thread Guide⑤ and the surface of
Spreader① and tighten Screw⑥ so that the thread is
caught by thread hooking part properly when
Spreader comes to the extreme right.
(3) Installing Top Cover Thread Eyelet
When Needle Bar at the lowest position, provide a
clearance of 1.0mm b etween the surface of Top Cover
Thread Guide⑤ and the undersurface of Top Cover
Thread Eyelet⑦.
And set the thread hole of Top Cover Thread Eyelet
⑦ on the center line of slot of Top Cover Thread
Guide⑤, then tighten Screw⑧.
※ Adjustment (1), (2), and (3) should be made according
to the thread to be used.
②
①
①
③
④
⑥
⑤
⑤
0.5-0.8 ㎜
4.5-5.5 ㎜
8.5-9.5 ㎜
⑦
①
1.0 ㎜
0.5 ㎜
⑦
⑧

－12－
6-4 Timing Adjustment of Needle and Looper
6-4-1 Looper movement to the right
6-4-2 Needle height 6-4-3 Front/Rear position
of Needle and Looper
6-4-4 Needle and Needle Guard(Rear)
Height of Needle Guard(Rear) Front/Rear position of Needle Guard(Rear)
6-4-5 Needle and Needle Guard(Front)
needle(symbol)
distance
looper movement
to the right
3.2 ㎜(32) 4.4 ㎜
4.0 ㎜(40) 4.0 ㎜
4.8 ㎜(48) 3.6 ㎜
5.6 ㎜(56) 3.2 ㎜
6.4 ㎜(64) 2.8 ㎜
①
0.5-
1.0 ㎜
③
②
⑥
⑥
④
⑤
③
0.2-
0.3 ㎜
0.2-
0.3 ㎜
⑧
⑦
0-0.05 ㎜
0-0.05 ㎜
⑩
⑨
⑩
1.5-2.0 ㎜
0-0.3 ㎜
Looper movement to the right
0-0.3 ㎜
⑫
⑪

－13－
7. Specifications
CC2700 Class
Super High Speed Cylinder Bed Interlock Machine
Dimensions 475 (Length) × 220 (Width) × 405(Height) mm
Circumference
of Cylinder Bed 280mm
Weight 39 kg
Stitch Type ISO 406, 407, 602, 605
Application General seaming of knitted material
Sewing Speed Max.6,000 stitch/min
Stitch Length
1.4～3.6 mm
stitch number: stitch/inch 7～18
stitch/30mm 8～21
Needle to be
used Schmetz or Organ UY128GAS #65～#90
Needle Distance for 2 needle : 3.2, 4.0 mm
for 3 needle : 4.8, 5.6, 6.4 mm
Needle Stroke 31 mm
Presser Foot Lift Max. 7.0mm (5.0 mm for machine with top cover thread)
Feed Regulation by push-button
Differential
Ratio
Max. normal differential raito : 1:2.9
Max. reverse differential raito : 1:0.3
Differential
Feed Regulation
by Adjusting Screw or by Control Lever
(Adjusting during operation from outside is possible by
moving Control Lever up and down.)
Lubrication Automatic lubrication by Oil Pump
(combined use with splashing lubrication)
Lubrication Oil YAMATO SF OIL 28
Capacity of Oil
Reservoir 1,000 cc
Installation Semi-submerged Installation (using exclusive Supporting
Board)