Brother Z-8550A User manual

Z-8550A
Z-8560A
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC DIRECT DRIVE ZIGZAG LOCK STITCHER
ELECTRONIC DIRECT DRIVE ZIGZAG LOCK STITCHER
WITH THREAD TRIMMER
INSTRUCTION MANUAL

Z-8550A, 8560A i
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, 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.
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.
Indications
DANGER The instructions which follow this term indicate situations where failure to follow the
instructions will almost certainly result in death or severe injury.
CAUTION The instructions which follow this term indicate situations where failure to follow the
instructions could cause injury when using the machine or physical damage to
equipment and surroundings.
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”.)

Z-8550A, 8560A
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 face plate 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
high-frequency welders.
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
electrical consumption.
Insufficient power supply capacity 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 more than 49 kg. The
installation should be carried out by two or more
people.
Do not connent the power cord until installation is
complete. The machine may operate if the treadle
is depressed by mistake, which could result in
injury.
Turn off the power switch before inserting or
removing the plug, otherwise damage to the
control box could 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.
When securing the cords, do not bend the cords
excessively or fasten them too hard with staples,
otherwise there is the danger that fire or electric
shocks could occur.
If using a work table which has casters, the casters
should be secured in such a way so that they
cannot move.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
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,
otherwise inflammation can result.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause
vomiting and diarrhea.
Keep the oil out of the reach of children.

Z-8550A, 8560A 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.
The machine may operate if the treadle is
depressed by mistake, which could result in injury.
 When threading the needle
 When replacing the bobbin and needle
 When not using the machine and when leaving the
machine unattended
If the actuator is pressed by mistake when using the
correction sewing function, the needle will move in a
zigzag motion while the machine is operating, and
injury may result.
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.
Never touch the knife on the face plate when
opening the thread takeup guard cover at times
such as when taking up slack in the thread,
otherwise 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.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
If an error occurs in machine, 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. The machine may operate if the treadle is
depressed by mistake, which could result in injury.
Do not directly touch sharp objects such as the tip
of the rotary hook when cleaning the rotary hook,
otherwise injury may result.
When removing the needle plate, auxiliary needle
plate and knife unit, use a screwdriver that matches
the size of the screw heads.
If a screwdriver with a size that does not match is
used, it may damage the screw heads and cause
personal injury or damage to the sewing articles.
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,
otherwise inflammation can result.
Furthermore, do not drink the oil or eat the grease
under any circumstances, as they can cause
vomiting and diarrhea.
Keep the oil out of the reach of children.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
Use only the proper replacement parts as specified
by Brother.

Z-8550A, 8560A
iv
CAUTION
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 from the wall outlet at the following times,
otherwise the machine may operate if the treadle is
depressed by mistake, which could result in injury.
 When carrying out inspection, adjustment and
maintenance
 When replacing consumable parts such as the
rotary hook
Turn off the power switch before inserting or
removing the plug, otherwise damage to the control
box could result.
If the power switch needs to be left on when
carrying out some adjustment, be extremely careful
to observe all safety precautions.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
Never touch the knife on the face plate when
opening the thread takeup guard cover, otherwise
injury may result.
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.
When removing the needle plate, auxiliary needle
plate and knife unit, use a screwdriver that matches
the size of the screw heads.
If a screwdriver with a size that does not match is
used, it may damage the screw heads and cause
personal injury or damage to the sewing articles.
Use only the proper replacement parts as specified
by Brother.
Any problems in machine operation which result
from unauthorized modifications to the machine will
not be covered by the warranty.
[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
2
Safety devices:
(A) Finger guard
(B) Thread take-up guard cover
3
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.

Z-8550A, 8560A v
4Direction of operation 5If the actuator is pressed by mistake when using
the correction sewing function, the needle will
move in a zigzag motion while the machine is
operating, and injury may result.
6Do not touch the thread take-up or the
knife, otherwise injury may result.
3316M
Oil pan
3317M
(For Europe)

Z-8550A, 8560A
CONTENTS
1. NAMES OF MAJOR PARTS................ 1
2. MACHINE SPECIFICATIONS.............. 2
3. SEWING PATTERN TABLE ................ 3
4. INSTALLATION.................................... 4
4-1. Table processing diagram................................ 5
4-2. Installation ........................................................ 6
4-3. Lubrication........................................................ 9
4-4. Connecting the cords ....................................... 10
4-4-1. Opening the control box cover .............. 10
4-4-2. Connecting the cords ............................ 10
4-5. Test operation (Operating the treadle) ............. 13
4-5-1. Turning on the power ............................ 13
4-5-2. Operating the treadle............................. 14
5. PREPARATION BEFORE SEWING .... 15
5-1. Installing the needle ......................................... 15
5-2. Removing the bobbin case............................... 15
5-3. Winding the lower thread ................................. 16
5-4. Installing the bobbin case................................. 16
5-5. Threading the upper thread.............................. 17
5-6. Adjusting the stitch length ................................ 18
5-7. Backtacking...................................................... 19
5-8. Using the knee lifter ......................................... 20
5-9. Using the thread wiper (8560A only) ................ 20
6. USING THE OPERATION PANEL
(BASIC OPERATIONS)....................... 21
6-1. Names and functions ....................................... 21
6-2. Pattern setting method ..................................... 25
6-2-1. Sewing pattern table.............................. 25
6-2-2. Setting the sewing pattern..................... 26
6-2-3. Setting the zigzag width ........................ 31
6-2-4. Setting the zigzag base line position ..... 32
6-2-5. Setting the zigzag stop position............. 33
6-2-6. Setting start backtacking
(8560A, 8550A-A31 only) ...................... 34
6-2-7. Setting end backtacking
(8560A, 855A-A31 only) ........................35
6-2-8. Setting continuous backtacking
(8560A and 8550A-A31 only) ................36
6-2-9. Setting fixed stitches/name label
sewing (8560A, 8550A-A31 only) ..........37
6-3. Using the lower thread counter.........................39
7. USING THE OPERATION PANEL
(ADVANCED OPERATIONS).............. 40
7-1. Names and functions ........................................40
7-2. Adjusting the needle up stop position ...............41
7-3. LOCK key .........................................................42
7-4. Resetting all settings to their defaults ...............42
7-5. Using user programs ........................................43
7-5-1. Recording sewing data ..........................43
7-5-2. Retrieving recorded sewing data ...........44
7-6. Setting the maximum sewing speed .................45
8. SEWING ............................................... 46
9. THREAD TENSION .............................. 47
9-1. Adjusting the thread tension .............................47
9-2. Adjusting the presser foot pressure ..................48
10. CLEANING ......................................... 49
10-1. Daily cleaning procedures ..............................49
10-2. Applying grease
(When “GREASEUP” appears…) ..................52
11. REPLACING PARTS.......................... 55
11-1. Fixed knife and movable knife (8560A only)...55
11-2. Gauge parts
(presser foot, needle plate and feed dog)......56
11-2-1. Replacing the stopper.........................56
11-2-2. Changing the feed amount to long stitch
specifications (from 2.0mm to 5.0mm) ... 57
11-2-3. Changing the maximum feed amount ... 57

Z-8550A, 8560A
12. STANDARD ADJUSTMENTS............ 59
12-1. Actuator position ............................................ 59
12-2. Adjusting the safety switch position................ 60
12-3. Adjusting the thread tension spring ................ 61
12-4. Adjusting the presser foot height.................... 62
12-5. Adjusting the feed dog height......................... 62
12-6. Adjusting the feed dog angle.......................... 63
12-7. Adjusting the forward/back position of
the feed dog ................................................... 63
12-8. Adjusting the needle bar height...................... 64
12-9. Needle and rotary hook timing ....................... 64
12-10. Bobbin case holder position bracket
position......................................................... 65
12-11. Adjusting the rotary hook lubrication
amount ......................................................... 66
12-12. Adjusting the presser foot floating amount
(minute lifting amount).................................. 67
12-13. Adjusting the treadle .................................... 67
12-14. Adjusting the position of the thread trimming
cam (8560A only)..........................................68
12-15. Adjusting the tension of the lower thread
presser spring (8560A only)..........................69
12-16. Adjusting the thread trailing length after
thread trimming (8560A only) .......................69
12-17. Adjusting the thread wiper (8560A only).......70
13. OPTIONAL PARTS ............................ 71
13-1. Presser bar U and presser bar tip...................71
14. WHEN USING A NON-STANDARD
FEED DOG (8560A only) .................. 73
15. TROUBLESHOOTING ....................... 74
15-1. Sewing............................................................74
15-2. Error code displays .........................................79

Z-8550A, 8560A
1. NAMES OF MAJOR PARTS
1
1. NAMES OF MAJOR PARTS
(1) Bobbin winder (2) Actuator
(3) Lifting lever (4) Presser foot
(5) Control box (6) Cotton stand
(7) Operation panel (8) Machine pulley
(9) Stitch length dial (10) Reverse lever
(11) Condense dial (12) Oil gauge window
(13) Power switch (14) Knee lifter assembly
(15) CF slot (16) Upper thread feeding device (8560A)
(17) Knife unit (8560A) (18) Thread wiper (8560A)
Safety devices
(19) Thread take-up guard cover (20) Finger guard
* CFTM is a trademark of SanDisk Corporation.
3319M

Z-8550A, 8560A
2. MACHINE SPECIFICATIONS
2
2. MACHINE SPECIFICATIONS
8550A 8560A
0 A 4
Thread trimmer - - c
Upper thread feeding device - - c
Back tack/condense device *1 - cc
Thread wiper - - c
8550A 8560A
-031, -A31 -431
Use For light-weight materials-For medium- weight materials
Max. stitch length 2.0 mm *2
Max. sewing speed 5,000 rpm *3
Sewing pattern 14 patterns of eight types built-in
(Up to 99 different types of custom-made patterns can be added *4)
Max. zigzag width 10 mm (Factory default 8 mm)
Thread take-up lever Rotary thread take-up
Needle bar stroke 33.3 mm
Feed dog height 1 mm
Lifting lever 6 mmPresser foot
height Knee lifter 10 mm
Presser foot pressure 10-30 N
Needle Schmets 134SUK Nm70/10
Motor AC servo motor (4-pole, 450 W)
Power supply
Single-phase: 110 V, 220 V, 230 V
3-phase: 220 V, 380 V, 400 V, 415 V
Maximum electric power consumption: 400 VA
Control circuit Microprocessor
*1… Used for sewing condensed stitches and backtack stitches.
*2… If replacing gauge parts and then changing the maximum feed amount setting, the maximum setting is 5 mm.
(Refer to pp. 18-19 and p. 57.)
*3… At the time of shipment from the factory, the maximum sewing speed is set to 4,000 rpm.
If using a sewing speed higher than this, use the memory switches to change the setting. (Ask the place of purchase for
details.)
Furthermore, the maximum sewing speed may be limited by the type of sewing pattern and the zigzag width. (Refer to
page 31.)
*4… The maximum number of custom-made patterns that can be stored is 99 patterns with a total of 49,500 stitches, at 500
stitches or less per pattern.
(Custom patterns can be created using the PS-300B (option device) and are saved into the control box using
commercially-available CF cards. Ask the place of purchase for details.)

Z-8550A, 8560A
3. SEWING PATTERN TABLE
3
3. SEWING PATTERN TABLE
•This sewing machine is equipped with the following built-in sewing patterns. Select the pattern number from the operation
panel to use a pattern. (Refer to page 26.)
•Different zigzag widths and zigzag lengths can be set for each sewing pattern. (Refer to page 18 and 31.)
Sewing pattern Pattern no.
（Main display）Notes
Straight stitch
Plain zigzag
2-step zigzag
3-step zigzag
Crescent scallop
(24sts.)
Even scallop
(12sts.)
If is set in the column marked with , a
reflection pattern can be sewn by stopping
the sewing machine and then pressing the
actuator.
(Refer to page 29.)
Standard scallop
(24sts.)
Scallop
(left)
Even scallop
(24sts.)
<Reflection pattern>
Crescent scallop
(24sts.)
Even scallop
(12sts.)
Standard scallop
(24sts.)
Scallop
(right)
Even scallop
(24sts.)
Blind stitch (left)
Blind stitch (right)
In the columns marked with , the number
of stitches sewn in a straight line can be set
within the range of 1 to 99 stitches.
(No. of stitches)
Custom made pattern −
Sewing patterns created using the
PS-300B (optional device) can be sewn.
(The pattern number is set in the columns
marked with .)
3320M—3333M
3334M—3348M
(Peflection
pattern)
Sewing direction
Press the actuato
r
Sewing pattern
1430M
1276M

Z-8550A, 8560A
4. INSTALLATION
4
4. INSTALLATION
CAUTION
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 49 kg.
The installation should be carried out by two or more
people.
Do not connect the power cord until installation is
complete. The machine may operate if the treadle is
depressed by mistake, which could result in injury.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
only one hand is used, the weight of the machine
head may cause your hand to slip, and your hand
may get caught.
About the machine set-up location
•Do not set up this sewing machine near other equipment
such as televisions, radios or cordless telephones, otherwise
such equipment may be affected by electronic interference
from the sewing machine.
•The sewing machine should be plugged directly into an AC
wall outlet. Operation problems may result if extension cords
are used.
Carrying the machine
•The machine should be carried by the arm by two people as
shown in the illustration.
* Hold the motor cover (A) by hand also so that the pulley
does not rotate.
Tilting back the machine head
•Hold section (B) with your foot so that the table does not
move, and then push the arm with both hands to tilt back the
machine head.
Returning the machine head to the upright position
1. Clear away any tools, etc. which may be near the table
holes.
2. While holding the arm with both hands, gently return the
machine head to the upright position.
3349M
3350M
3351M
3352M

Z-8550A, 8560A
4. INSTALLATION
5
4-1. Table processing diagram
•The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the
vibration of the sewing machine.
•Drill holes as indicated in the illustration below.
•Select a method that is easy to carry out for the type of table used.
3354M
Cotton stand hole
Cord hole
Head rest hole
Control box mounting hole
<Standard type>
3353M
Cotton stand hole
Cord hole
Head rest hole
Control box mounting hole
<Wide type>
This type has a wider front/back dimensions at the front of the sewing machine.

Z-8550A, 8560A
4. INSTALLATION
6
4-2. Installation
1. Control box
(1) Control box
(2) Bolts [4 pcs]
(3) Nuts [4 pcs]
(4) Spring washers [4 pcs]
(5) Washers [4 pcs]
2. Connecting rod
(6) Connecting rod
(7) Nut
3. Power switch
(1) Power switch
(2) Screws [2 pcs]
(3) Staples [5 pcs]
Secure the power cord (4) in a suitable
place depending in the position of the
wall outlet.
4. Oil pan
(1) Head cushions [4 pcs]
(2) Oil pan
3355M
3356M
Operator
3357M
Cord

Z-8550A, 8560A
4. INSTALLATION
7
5. Rubber cushions
(1) Rubber cushions [2 pcs]
(2) Nails [4 pcs]
6. Knee lifter complying bar
(3) Knee lifter complying bar
7. Machine head
(1) Hinges [2 pcs]
(2) Machine head
(3) Head rest
NOTE:
•Tap the head rest (3) securely into
the table hole.
•If the head rest (3) is not pushed in
as far as it will go, the machine
head will not be sufficiently stable
when it is tilted back.
8. Operation panel
(1) Operation panel
(2) Screws [2 pcs]
(Use for tightening rear cover)
9. Sticker (Remove)
(1) Sticker
3360M
3359M
3361M
3358M

Z-8550A, 8560A
4. INSTALLATION
8
10. Cotton stand
(1) Cotton stand
NOTE:
Securely tighten the nut (4) so that
the two rubber cushions (2) and the
washer (3) are securely clamped and
so that the cotton stand (1) does not
move.
11. Knee lifter plate
(1) Knee lifter plate
(2) Bolt
* Loosen the bolt (3) and move the
knee lifter plate (1) to a position
where it is easy to use.
<Knee lifter adjustment>
1. Turn the machine pulley so that the feed dog is below the
top of the needle plate.
2. Lower the presser foot (5) by using the lifting lever (4).
3. Loosen the nut (6).
4. Turn the screw (8) to adjust so that the amount of play in
the knee lifter (7) is approximately 2 mm when the knee
lifter plate (1) is gently pressed.
5. Securely tighten the nut (6).
6. Loosen the nut (9).
7. Turn the screw (10) until the distance between the end of
the screw (10) and the knee lifter (11) is approximately 4
mm.
8. Turn the adjusting screw (10) to adjust so that the
presser foot (5) is at the desired position within a
distance of 10 mm of the needle plate when the knee liter
plate (1) is fully pressed.
9. After adjustment is completed, securely tighten the nut
(9).
2098M
3362M
3363M
Within 10 mm
3364M
2101M

Z-8550A, 8560A
4. INSTALLATION
9
4-3. Lubrication
CAUTION
Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the
treadle is depressed by mistake, which could result in injury.
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, otherwise inflammation can result.
Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and
diarrhea.
Keep the oil out of the reach of children.
•The sewing machine should always be lubricated and the
oil supply replenished before it is used for the first time,
and also after long periods of non-use.
•Use only the lubricating oil (Nisseki Mitsubishi Sewing
Lube 10N; VG10) specified by Brother.
* If this type of lubricating oil is difficult to obtain, the
recommended oil to use is <Exxon Mobil Essotex SM10;
VG10>.
1. Remove the rubber cap (1).
2. Use the accessory oiler (2) to add lubricating oil until
the oil gauge (4) comes to the top reference line of the oil
gauge window (3).
NOTE:
•Pour in the lubricating oil slowly while checking the
position of the oil gauge (4).
•Do not let the oil gauge (4) go higher than the top
reference line when adding the oil.
3. Replace the rubber cap (1).
* Be sure to add more oil if the oil gauge (4) is below the
lower reference line.
3365M
Upper reference
line
Lower reference
line

Z-8550A, 8560A
4. INSTALLATION
10
4-4. Connecting the cords
DANGER
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet
before opening the face plate of the control box. Touching areas where high voltages are present can result in
severe injury.
CAUTION
Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.
Do not connect the power cord until all cords have been connected.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
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.
4-4-1. Opening the control box cover
(1) Screw [6 pcs: With washer]
(2) Cover
4-4-2. Connecting the cords
1. Sewing machine cords
(1) Repeat cable tie
3366M
Loosen
3367M
<Removal>
<Securing>
Press the tab.
Cords

Z-8550A, 8560A
4. INSTALLATION
11
Connector P.C. board indication Cord clamp
(2) 4-pin motor connector Outside of control box
(3) 5-pin zigzag motor connector P5 PM (10)
(4) 7-pin head detector unit connector P6 HEAD-M (10) (12) (14) (15)
(5) 14-pin machine connector P19 MACHINE (11) (13)
(6) 14-pin encoder connector P13 ENC (10) (12)
(7) 8-pin operating panel connector P21 PANEL (10) (12) (14) (15)
(8) 5-pin zigzag motor encoder connector P3 NDL_ENC (10)
(9) 3-pin DC fan connector (oil pan) P32 FAN2 (11) (13) (14) (15)
2. Closing the cord presser plate
(1) Cord presser plate
NOTE:
•Loosen the cables outside the control box without
stretching them too much inside the control box.
•If the cord presser plate (1) is not closed firmly, dust
will get inside the control box and may cause
problems.
3369M
Push in securely until
the tabs (16) engage.
<Removal> <Securing>
Press the tab.
Insert firmly until a click is heard.
Ground symbol
3368M
Close
Tighten
Loosen as much as
possible.

Z-8550A, 8560A
4. INSTALLATION
12
3. Closing the cover
(2) Screw [6 pcs: With washer]
(3) Cover
4. Power cord
(1) Power cord
<For single-phase specifications>
Insert the power cord plug (2) into a
wall outlet.
<For three-phase specifications>
1. Attach an appropriate plug to the
power cord (1). (The green and
yellow wire is the ground wire.)
2. Insert the plug into a
properly-grounded AC power supply.
NOTE:
Do not use extension cords,
otherwise machine operation
problems may result.
5. Ground wire
(1) Ground wire
(2) Spring washer [2 pcs]
(3) Plain washer[2 pcs]
(4) Screw [2 pcs]
3370M
3371M
Tighten
<Single-phase> <Three-phase>
Green and yello
w
wire (ground wire)
3372M
Ground symbol
Oil pan
Ground symbol