Consew 328RB-1 User manual

·OPERATING INSTRUCTIONS~
CONSOLIDATED SEWING MACHINE CORP.
model
- ·~- -·
328RB-1
HEAVY DUTY
HIGH SPEED
TWO NEEDLE
ANGULA.R STITCHif\JG
(SPLIT NEEDLE BAR}
DROP FEED, NEE LE FEED
. . ·(COMPOUND FEED)
ALTERNATING PRESSER FEET
LOCKSTITCH MACHINE
CONSOLIDATED SEWING MACHINE CORP.
COPYRIGHT@
CONSOLIDATED SEWING MACHINE CORPORATION
From the library of: Superior Sewing Machine & Supply LLC

CONTENTS
DESCRIPTION
Characteristics, Capacity, Specifications
Lubrication, Oil Adjuster
Hook Lubrication, Speed, Needles
setting The Needle
Thread
Bobbin Winding
Inserting & Removing Bobbins
Threading The Machine
Regulating The Thread Tension
Thread Controller
Adjusting The Stitch Length
Pressure On Material
Reverse Stitch
Re-Set The Safety Clutch
Adjust The Lift Of The Alternating Presser Foot
RepLicement Of The Timing Belt
Adjusting The Height Of The Feed Dog
Adjusting The Timing, Needle Plate, Needle & Feeder
Adjusting The Height Of The Needl~ Bar
Timing Between The Hook & Needle
Timing Adjustments
Adjusting The Clearance
Relative Position Between Bobbin case & Opener
Adjusting The Height Of The Presser Foot
•
Timing The Vibrating Presser Foot
Thread Controller Spring
Fine Adjustment Of The Upper Feed
Special Instructions For Model 328RB-l
Needle Bar Stop Mechanism
Needle Bar Stopping & Operating Mechanism
Prevention Of Needle Bar Rotation
CONT'D
l
2,3
4
5
5
6
7
8
9
10
10
11
11
12
12
13
14
15
16
16
17
17
17
17
18
19
20
21
21
21
23
(I)
From the library of: Superior Sewing Machine & Supply LLC

DESCRIPTION
Vertical Adjustment Of Needle Bar Position
Needle Bar Release Mechanism
Operation Of Needle Bar Change Over Frame
Rotating Hooks For Angular Seam Sewing
Preventing Looping Of Lower (Bobbin) Thread
Adjusting The Height Of The Needle Clamp
Adjustment Of The Lower Steel Ball
SERVICE AND REPAIR INFORMATION (29 thru 38)
PAGE
24
24
24
25
26
27
28
Position Of Needle Bar Bushing 29
Assembly Of Needle Bar 30
Assembly Of Needle Bar Into Needle Bar Rock Frame
Position Needle Bar Rock Frame Pin
Install Needle Bar Rock Frame Bracket
Adjusting
The
Height
Of
The Needle Bars
Adjusting
The
Needle
Bar Release Mechanism
Adjustment Of
Needle Bar Selector
Adjusting The
Line
Up
Of The Needle Bar
Selector Lever
Setti?g
The Height Of The Needle Chucks
Trouble Shooting
Parts List
30-32
33
33
34
34,35
36
36
38
39,40
41-75
List of Illustrations
Figure
NO. Page
No. Figure No.
Fig
1,2
• 2 Fig
34,
35
Fig
3,4,5,5A
3 Fig 36
Fig 6 4 Fig
37
Fig 7,8
5
Fig 38
Fig 9 6 Fig 39,40A,40B
Fig
10
7
Fig
41A,
41B
Fig 11
8
Fig 42
Fig
13,
14
9
Fig
43A,
43B
F!g
15, 16 10
Fig
44,
45
Fig
17, 18,
19
11
Fig 46
Fig 20
12
E'ig 47,
48
Fig
21,22,24,25
14
Fig
49
Fig
23
13
Fig
so,
51
Fig
26,
27
15
Fig
52
Fig
28A,28B,29
16
Fig
53
Fig
30, 31
17
Fig
54
Fig
32,
33
18
Fig
55
(II)
Page
No.
19
20
21
23
22
24
25
26
27
28
29
31
33
34
35
36
37
From the library of: Superior Sewing Machine & Supply LLC

CONSEW Model 328RB-l I/A/W NSN 3530-01-182-2873,
complete with Stand & Motor Assembly, Spare Parts
Kit & Gage Set.
Power Requirement: !20VAC, 1 Phase, 60 Hz
Approx. size and weight: 20 X 40 X 41 High, 210lbs.
CAUTION
KEEP HANDS OFF MOVING PARTS.
SHUT OFF POWER
BEFORE MAKING ANY ADJUSTMENTS.
Setting up machine;
CAUTION
HIGH VOLTAGE
120VAC 60Hz 7amps
1. Read complete manual Ptior to set up.
2. Attach the Bobbin Winder, Thread Stand, Knee Lifter and
Head Rest Pin to Stand Assembly.
3. Insert machine head into stand cutout and Hinge Plates.
4. Install "V" Belt from machine handwheel to Motor Pulley.
5. Connect to Power Source.
Note Be sure machine is well lubricated prior to sewing.
Authorized Service Activities
(III)
Consolidates Sewing Machine Corp is the exculsive distributor of
all CONSEW Machines.
CONTACT: Consolidated Sewing Machine Corp.
56~65 Rust Street
Maspeth, N.Y. 11378
Phone: [phone]
FAX: [phone]
Telex: RCA 237750
For the name and address of your local authorized CONSEW service
activity.
WARRANTY
----------- --------------
Unless otherwise stated COI\lSEW sewing equipment is warranted against defects in
material or workmanship tora period of nine·ly (90) days from date of invoice.A warrantee
period of one (1) year applies to CONSEW clutch motors defective for same causes.
Needle positioner motors are warranted for eighteen (18) months from date of
manufacture.
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OPERATING INSTRUCTIONS 328RB-l
CHARACTERISTICS AND CAPACITY
The CONSEW MODEL 328RB-l is a double needle, split needle bar, heavy duty
lockstitch machine, designed for sewing medium to heavy weight fabrics such
as canvas, tents, sails, tarpaulins, upholstery and other similar products.
Designed for sewing operations which require decorative or functional angular
stitching such as collars, lapels, pockets, pocket flaps, etc. It is
equiped with alternating pressers, compound feed and a rotary sewing hook
on a vertical axis. It has a clearance of ll/32 inches under the presser
foot.
Alternating pressers consist of a vibrating presser foot and a lifting
presser foot working in combination. In operation, the pressers alternately
•
press down on the material, the vibrating presser working in unison with the
feed so that there is no slipping of the two or more plies of material which
are being sewn.
Speed, Max. (S.P.M.) 2200 Hook 16407
Clearance Under Foot
11/32" (8.5 mm)
Bed Size
7" x 203/a" (177 x 518 mm)
NP.edle Bar Stroke 1lf4" (32
mm)
Work Space 10" (258 mm)
--
.h Length, Max.
4 s.p.i. (6.5 mm)' Stitch Type
301
-Needle 135 X 7 Needle Distances
1/a" to 1" (3.2 to 25.4 mm)
Metal 16408
Bobbin Pre-wound u
( l)
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LUBRICATION (Figs. 1 - 5)
For the lubrication of the machine, only a good quality sewing machine oil
should be used. In order to insure proper function of the machine and to
prevent any excess wear of the moving parts and bearings, the machine
should be oiled regularly. In case of continuous use, it should be oiled
even more often if it is used to produce long seams and run steadily.
FILLER~ HOLE
,/
FIG. 1
FIG. 2
Figure 1 shows the oil filler hole tor oil reservoir on top of ·arm on maclune.
Fill machine arm reservoir to high mark on oil sight gauge as indicated in
Fig. 1. The machine arm reservoir contains an oil vibrating pump which
releases oil only when the machine is operating.
Figure 2 shows the oil filler hole for hook saddle reservoir. Remove oil
gauges shown in Figure 2 and fill two hook saddle reservoirs to full mark
_on gauges. Lubricate hook gears and opener gears by applying a generous
supply of oil to oil hole indicated in Figure 2 (left & Right Hook) .
Figure 3 shows the machine with the oiling points when the face plate has
been removed. These oiling points must be oiled in addition to all other
oiling points before the machine is placed in operation for the first time
and at least once daily thereafter.
(2)
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Figure 4 shows the back of the machine with various oiling points.
Figure 5 shows the underside of the machine with the lubrication points.
Machine can be oiled when the machine is tilted back on its hinges.
NOTE:
Oiling point holes are outlined in red.
OIL ADJUSTER (Fig. SA)
Oiling to inside of arm top cover is automatically made by the vibration
of the machine while sewing operation.
Stop oiling temporarily by the followli1g method at your option in case of
long sewing operation.
When point of the dial enters into point of arm bed cover after turning the
dial, the dial·goes down and oiling stops completely.
FIG. 4
FIG. 3
FIG. 5
FIG. 5A
(3)
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HOOK LUBRICATION
The bobbin case raceway is lubricated by oil pumped from the hook saddle
reservoir while the machine is operating. The amount of oil received by hook
raceway_ is very important. To check this, first remove bobbin case. Then
with the machine running, hold a small piece of white paper near the hook
for about 10 seconds. A distinct spray of oil should be visible on the paper.
If there is no trace of oil or an excess of oil on the paper, proceed with the
following steps:
1) Tip machine and loosen control valve set screw 1, shown in Fig. 6.
2} Turn control valve screw shown in Fig. 6 clockwise for more oil;
counter-clockwise for less oil. Re-tighten control valve set screw.
A short test run of at least a minute should be made between adjustments to
insure uniform oil flow. After each adjustment of oil control valve screw
oil control valve set screw should be securely tightened.
FIG. <S
SPEED
Maximum speed for machine is 2200 stitches per minute.
Maximum efficient speed is dependent upon the nature of the operation, the
ability of the operator and the type of material being sewn.
NOTF . WARNING
Never run a new machine at maximum peek immediately following a new installation.
A peek of 500 stitches per minute less than maximum is recommended for the
first 100 hours of operation.
NEEDLES
Model 328RB-l Series machine use standard needle style 135 x 7 in sizes 12
through 24. The size of the needle to be used should be determined by the
size of the thread, which must pass freely through the eye of the needle.
(4)
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SETTING THE NEEDLES (Fig. 7)
l) Turn machine pulley over toward you until needle bar is at highest
position as shown in Fig. 7.
2) Loosen needle clamping screw.
3) Insert needle into needle bar to highest position, with long groove
of needle to the inside, facing each other and eye of needle parallel
to machine arm.
4) Tighten clamping screw.
HOLD THIS END
FIG. 7
FIG. 8
THREAD (Fig. 8)
Left twist thread should be used in the right-hand needle, right twist
thread should be used in the left-hand needle. Either left of right
twist thread can be used in bobbin.
To determine thread twist, hold thread as shown in Fig. 8. With left
hand holding one end of thread, twirl other end with thumb and forefinger
of right hand over toward you. If left twist thread, strands will ~ind
tighter. If right twist thread, strands will unwind or separate.
( 5)
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BOBBIN WINDING (Fig. 9)
The bobbin winder is mounted on the table top with its pulley in front of
the driving belt so that the pulley will separate from the belt after the
bobbin has been wound with sufficient thread.
Push the bobbin on bobbin winder spindle as far as it will go. Pass
thread from thread stand downward through eye (1), Fig. 9, in tension
bracket; then between and around the back of the tension discs (2) bring
thread forward toward bobbin (3) and wind from below in clockwise direction
several times around bobbin. Push bobbin winder lever (4) downward until
wheel (5) contacts the drive belt (6) and then start machine.
After bobbin is filled with thread, release will cause wheel tu disengage
from belt and winding will stop.
Cut thread and remove bobbin from winder spindle.
Adjustment screw (7) can be turned in or out to increase or decrease the
amount of thread wound on the bobbin.
When fine thread is wound on bobbins, use light tension. It is regulated
by turning the knurled nut (8) on the tension bracket at the rear of
the bobbin winder. Bobbin can be wound while the machine is sewing.
FIG. 9
(6)
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INSERTING AND REMOVING BOBBINS (Fig. 10)
1) Raise both needle bars to there highest point and push open the
two slide plates (1).
2) Pull up the latches (2) of the bobbin·cases and lift the bobbins (3)
out of the bobbin cases.
3) To insert a full bobbin in the bobbin case, hold it between thumb
and index finger of your hand. Place the bobbin on the center
post of the bobbin case and push down the latch (2).
Be sure that the thread draws out from the bobbin from left to
right;
4) Pull the thread into the slot (4) and between the bobbin case
opener (5) and the projection (6) and under the tension spring
(7) •
5) Draw out about 5mm of the thread on the needle plate and close the
slide plate leaving a sufficient space for passage of the thread.
NOTE:
See Fig. 43A and 43B for threading of bobbin case.
FIG.lO
(7)
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THREADING THE MACHINE (Fig. 11)
1) Raise both needle bars to there highest point.
2) From the thread stand, lead the thread to the thread guide (1), (A) on
top of the machine, down to the upper guide hole of the thread
guide (2), (B) from right to left.
3) Pass the thread in weaving iashion th:cuugh the other T:.wo holes ln
(2), (B) and from right to left over and between the tension dlscs (3),
(c) •
4) Now pull the thread downward from right to left beneath and around
thread controller (4), (D), continue to pull the thread upward
through the fork in the thread controller and against the pressure of the
check spring (5), (E) and through the thread guide (6), (F) pull the
thread upward through the eye in the take-up lever (7), (G) down
through the thread guide (6), (F) again and then through the thread
guide (9) (I) down through the hole (10), (J) in the
needle holder and from inside to outside through the eye (11), (K)
of the needle.
NOTE: -use numbers for left side, use letter for right side.
FIG. 11
(8)
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REGULATiNG THE THREAD TENSIONS (Fig. 12)
For ordinary stitching, the tension of the upper and lower threads should
be equal so as to lock both threads in the center of the fabric. If the
tension on either thread is stronger than on the other, imperfect stitching
will be the result.
If the tension on the upper thread is greater than that on the lower thread
it will be straight along the upper surface of the fabric.
If the ten$ion on the lower thread is greater than that on the upper thread,
the lower thread will lie stralght along the underside of the fabric.
Perfect stitching
Tight tension of needle thread
Loose tension of needle thread
FIG. 12
A. Tension Of The Upper Thread (Fig. 13)
To adjust the tension of the upper (Needle) thread, turn the serrated
nut (1) to the right for increasing tension. If you desire to decrease
it; turn the nut to the left.
B. The Tension Of The Bobbin Thread (Fig. 14)
It is regulated by means of the tension screw (1). To increase the tension,.
turn the screw to the right, and to decrease it, turn the screw to the
left with a screw driver.
FIG. l3
FIG. 14
(9)
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B
THREAD CONTROLLER (Fig. 15) (See Page 19, Fig.35 Per Additional Information)
The thread controller should draw up slack __ t;hre_Cid J:?ef?J::'E; nee_dle. point enters
fabric to prevent needle £rom penetrating thread.
To adjust thread controller, loosen set screw A, shown in Fig. 15. Turn
thread controller spring stop counter-clockwise for more controller action
on thread or clockwise for less action. Tighten set screw A.
Thread controller action TENSION should be increased for heavy thread and
decreased for light thread.
To adjust thread controller action tension, loosen set screw B shown in
Fig .. 15. Turn tension stud slightly counter-clockwise for more tension or
clockwise for.less tension. Tighten set screw B.
STITCHES PER INCH
4\
FIG. 15
FIG. 16
ADJUSTING THE STITCH LENGTH (Fig. 16)
The stitch length is changed by pressing down button 2, Fig. 16, in the
bed plate.of the machine and by simultaneously turning the handwheel slowly
toward you.
In due course, the button will snap into a notch in the feeding mechanism.
Hold the button down and continue to turn the handwheel, either forward
or rearward, until the marking with the desired number of stitches on the
hand wheel coincides with the reference mark on the arm. Then release the
plunger.
(10)
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PRESSURE ON MATERIAL (Fig. 17)
Pressure of presser foot on material should be as light as possible while
being sufficient to insure correct feeding.
Pressure is regulated by screw (l) shown in Fig. 17 at rear of machine arm.
Turn screw clockwise to increase pressure or counter-clockwise to decrease
pressure.
1 TURN TO ADJUST
FIG. 17
REVERSE STITCH (Fig. 18, Fig. 19)
To do tacking for the purpose of locking the ends of seams, rapidly depress
and release the lever (3) Fig. 18.
When reversing feed of the machine, keep the lever (3) depressed as long
as required. For all other forward stitching, the lever remains in up
position.
CHAIN/REVERSE
FIG. 18
FIG. 19
{ll)
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To reverse the feed with foot treadle, the foot treadle chain should be
connected to hole in reverse feed lever shown in Fig.l9.
Release hand lever or foot treadle only when you wish to resume forward
stitching.
HOW TO RE-SET THE SAFETY CLUTCH MECHANISM (Fig. 16)
The sewing hook and it's mechanism are protected by a safety clutch. In
case the hook gets jammed with thread or other foreign matter, the safety
device disengages the driving belt, stops sewing, and thus prevents the
machine from getting damaged. If it should become necessary to re-engage
the safty clutch, depress the button (1) Fig. 16 in the bed plate, at
the same time, turn the handwheel away from you until the locking mechanism
re-engages the drive shaft beneath the bed of the machine, open the slide
plate above the hook and rock handwheel back and forth to remove any foreign
matter which may have lodged in the hook.
Do not use any sharp-edged tools, etc., lest the hook be damaged.
J
FIG. 20
ADJUSTING THE LIFT OF THE ALTERNATING PRESSER FEET (Fig. 20)
•
The thickness of the material sewn should control the height of the lift
of the alternating presser feet. It should normally be just high enough for
clearance of the material. With normal adjustment both feet lift to equal
height.
To adjust the lift, loosen the wing nut (1), move up the nut to raise the
lift and push down this nut to lower the lift.
When alternating the lift of the lifting presser foot unequally against
that of the vibrating presser foot or vice versa, see the instructions
~ADJUSTING THE HEIGHT OF THE PRESSER FEET".
(12)
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REPLACEMENT OF THE TIMING BELT (Fig. 4, 21, 22, 23)
REMOVING THE TIMING BELT
Remove the arm top cover (4, Fig. 16) and remove the timing belt from the
b~lt. pulley, loosen the collar set screw (1, Fig. 23) •
Loosen the two set screws (4, Fig. 23) for the hand pulley and remove
the handwheel. Adjusting screw (5, Fig. 23), draw out the handwheel
from the arm shaft.
Loosen the arm shaft rear bushing set screw (2, Fig. 23), pull out the
rear bushing (3, Fig. 22) from the arm hol8.
In case of the machine with reverse stitch mechanism, draw out the
reverse lever (6, Fig. 23) with its shaft.
Removing or inserting the timing belt is made through the hole for
the rear bushing.
FIG. 23
•
INSERTING THE BELT (Fig. 21,22)
Turn the balance wheel toward you until the take-up lever gets to its
highest point.
Turn the lower shaft (1) until the arrow mark on the lower shaft bearing
collar (2) meets with another arrow mark on the timing plate (3).
insert a new timing belt into the belt pulley at this position.
After inserting the belt correctly, replace the rear bushing, screws, the
arm top cover, etc., to their original places. Finally, adjust the
timing marks, as noted above.
(13)
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FIG. 21
FIG. 22
ADJUSTING THE HEIGHT OF THE FEED DOG (Fig. 24, 25)
The maximum height of the feed dog from the surface of the needle plate is
normally lmm.
Before adjusting feed dog, regulate stitch length for longest stitch. If
feed dog is correctly adjusted, all teeth should rise evenly and completely
above throat plate as shown in Fig. 24.
If adjustment is required, first remove throat plate, then tip machine back
and turn machine pulley over toward you until feed dog is at its highest
position. Loosen fork screw shown in Fig. 25 and raise or lower feed dog
to correct position. Re-tighten fork screw.
When adjusting feed dog, make certain it does not strike sewing hook.
lmm
®Needle plate
FIG. 25
FIG. 24
(14)
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Feed dog should be set so that when needle is at lowest position of cycle,
it will be slightly in front of center point of needle hole in feed dog •
.
If needle is not correctly located in needle hole, tip machine back to
loosen pinch screws shown in Fig. 25 and adjust feed dog to correct position.
Prior to above adjustment, check needle bar to presser bar setting.
ADJUSTING THE TIMING OF THE NEEDLE PLATE, NEEDLE & FEEDER (Fig. 26,27,36)
1) THE POSITION OF THE FEEDER AGAINST THE NEEDLE PLATE
Adjust the feed motion to the maximum and loosen the screw (4, Fig. 36).
Set the position of the feeder so that both clearances A and B (Fig. 26)
are equal before starting feed motion and after finishing the feed.
Securely tighten the screw.
2) THE POSITION OF THE NEEDLE AND NEEDLE HOLE OF THE FEEDER
To adjust this, turn the handwheel to raise the needle bar to its
highest point and put correct needles.
Turning the handwheel to lower slowly the needle bar, check whether or not
the needle descends to the center of the needle hole of the feeder.
If the needle does not enter into the center of the hole, remove the
side plate (2, Fig.l) and loosen the screw (1, Fig. 27) through the
window of the arm.
Holding the bottom of the needle bar r?ck frame (1 Fig. 28), move it as
may be required to get the correct position to the center of the needle
hole of the feeder. Then tighten the screw and replace the side plate.
FIG. 26
FIG. 27
(15)
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ADJUSTING THE HEIGHT OF THE NEEDLE BAR {Fig. 28)
caution: This procedure should only be performed by a qualified sewing
machine mechanic. All others, refer to Page 27 Fig. 44 & 45.
When the needle bar is at its highest point, the distance between the
surface of the needle plate and upper end of the needle eye should be
7/8" {22.5mm). To adjust, remove thread gu~de as shown. Insert
screw drive. into hole 'B', locate set screw 'C' and loosen. The entire
needle bar assembly will now be able to move up and down on the knurled
eccentric~· to move the eccentric, insert screw driver into hole 'B',
push the knurl of the eccentric with the blade of the screw driver.
After adjustment be sure to tighten set screw 'C'. (See Page 34 Fig. 52)
2.1mm
F::i:G. 29
ECCENTRIC
FIG. 28A
FIG. 28B
TIMING BETWEEN THE HOOK AND NEEDLE (Fig. 29)
After setting the needle bar height as noted on Pg. 2, set the stitch
length to 0, turn the balance wheel to lower the needle bar to its lowest
point, turn the wheel toward you. When the needle raises 2.lmm from the
lowest point of its travel, normally the hook point is at the center
of the needle, the measurement betv1een the hook point and the upper
end of the needle eye should be 2mm; further the clearance between the hook
point and the needle hollow should be 0.05 to 0.2mm. If they are not measured
as above, adjustments are made as follows:
(16)
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