Mitsubishi Electric PLK-G2516 User manual

INDUSTRIAL SEWING MACHINE
MODEL
PLK-G2516
TECHNICAL MANUAL
SEWING MACHINE HEAD BASIC
A180E619P03

FOR SAFE USE
Before the installation, operation, and inspection for this product, read the “FOR SAFE USE” and the
technical manuals carefully. Also read the other technical manuals, “Control Unit” and “Operation Panel”
describing some instructions, which are not in this manual, and use the sewing machine properly.
SAFETY INDICATIONS
DANGER
Indicates that incorrect handling may cause hazardous conditions, resulting
in death or severe injury.
CAUTION
Indicates that incorrect handling may cause hazardous conditions, resulting
in medium or slight personal injury or physical damage. Note that CAUTION
level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to
personal safety.
CAUTION INDICATIONS
No. Caution indication Description
1
Precaution for sewing machine operation:
Indicates that removing the safety and operating
the sewing
machine for some other purposes with power-on are prohibited.
Please do not operate the sewing machine without
protective equipment such as a needle guard, an eye guard,
a belt cover or the others.
Please turn off the power switch when threading, changing
a needle and a bobbin, cleaning, and lubricating.
2
Caution for fingers injury:
Indicates a possibility of fingers (hands) injury in a certain
condition.
3
Caution for squeezing fingers:
Indicates a possibility of squeezing fingers in a certain condition.
4
Indication of pulley rotation direction:
Indicates a normal pulley rotation direction of sewing machine.
(For sewing machine with pulley)
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

SAFETY PRECAUTIONS
DANGER
To prevent from receiving an electric shock, always turn off a power switch and unplug power supply
when opening a control box, and then open after ten minutes passes.
CAUTION
USAGE ENVIRONMENT
Please do not operate the sewing machine under the following conditions.
(1) In the ambient temperature of 35 degrees (95°F) or more than 35 degrees, or the ambient
temperature of 5 degrees or less than 5 degrees (41°F).
(2) In the ambient temperature of 55 degrees (131°F) or more than 55 degrees, or the ambient
temperature of -10 degrees or less than -10 degrees (18°F) during transportation.
(3) In the relative humidity exceeding 85% or less than 45%.
(4) In the open-air place or the location that receives direct sunlight.
(5) In the place near heat sources such as heating devices.
(6) In the atmosphere filled with dust, explosive gas, or corrosive gas.
(7) In the place where the fluctuati
on in the power voltage of 10% or more than 10%, or the power
voltage of -10% or less than -10% of the fixed power voltage.
(8) In the place where the power source cannot supply enough voltage to keep the motor running.
(9) In the place filled with strong electric noises such as high-frequency welders.
INSTALLATION
(1)
Please have some specialists, who have enough experience for the sewing machine installations,
install the sewing machine.
(2) Please have a qualified electrician perform necessary electric wiring.
(3) Please
do not operate until the sewing machine is repaired when any damage or fault is found on
the sewing machine at the installation.
(4) Please do not refurbish the sewing machine.
(5) The sewing machine is heavy. For the safety, please make sure to install the sewing machine head
by more than one person.
(6)
When tilting the sewing machine, please stand at the hinge side and hold the sewing machine with
both hands.Also, please lock the caster on the steel stand
(7) When tilting the sewing machine, the work clamp slides toward the hinges. Before tilting the sewing
machine, insert the accessory hexagonal wrench into the fitting of work clamp to prevent the sliding
of work clamp. And then before driving the sewing machine, remember to remove the hexagonal
wrench.
(8) Please lock the
caster on the steel stand to prevent the machine from moving before tilting the
sewing machine.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

(9) Please make sure to fit the safety protective equipment (the motor cover or the others) and the
accessory protective equipment (the eye guard) that removed temporarily for installation.
(10) If the table and the steel stand are not MITSUBISHI original, the table and the steel stand have to
be strong enough to withstand the weight and Vibration of the sewing machine.
(11) When fitting the caster to the steel stand that are not MITSUBISHI original, the caster with locking
function has to be strong enough to withstand the weight and Vibration of the sewing machine.
SEWING
(1) Please make sure to turn the power switch off before installing or replacing needles.
(2) Please pay attention for the fingers not to be injured by the needle point.
(3) Please make sure to turn power switch off before lubricating.
(4) Please pay attention that oil does not get on your skin or in your eyes as it
may cause an
inflammation.
(5) Please make sure to keep oil out of the reach of children who may drink oil by mistake.
(6) Please make sure to turn the power switch off before threading a needle.
(7) Before starting the sewing, please make sure the position and the function of the halt switch.
(8) Please do not touch the operating parts during sewing operation.
(9)
It is very dangerous to operate the sewing machine without safety guards (eye guards, belt covers,
link covers, finger guards or the others).
Please make sure to operate the sewing machine with safety guards.
(10) Please make sure to turn the power switch off when stopping the sewing machine temporarily.
ADJUSTMENT
(1) Please make sure to turn the power switch off before adjusting the sewing machine.
(2) If the adjustment is required while the power switch on, do not step on the foot switch by mistake.
(3) Please be careful not to be injured by a sharp part such as the needle and the shuttle hook point.
(4) Please make sure to put the safety guards (eye guards, belt guards, link covers, and finger guards
or the others) back on the initial position after the sewing machine adjustment.
(5) Please make sure to lock the caster on the table when tilting the sewing machine.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

CONTENTS
1. STRUCTURE OF THE SEWING MACHINE···································· 1
2. INSTALLATION········································································ 2
2-1. Preparation of the table
··········································································
2-2. Preparation of the steel stand··································································
2-3. Installation of the control box···································································
2-4. Installation of the operation panel·····························································
2-5. Installation of the power switch and foot switch············································
2-6. Installation of the oil pan·········································································
2-7. Installation of the machine head·······························································
2-8. Installation of the tilting detect switch·························································
2-9. Installation of the eye guard····································································
2-10.Installation of the gas spring···································································
2-11. Connection of the electric cables····························································
2-12. Installation of the thread stand·······························································
2-13. Connection of the air tube·····································································
2
3
3
3
3
4
4
5
5
6
7
8
8
3. LUBRICATION········································································· 9
4. INITIAL SETTING OF THE CONTROL BOX··································· 9
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

1. STRUCTURE OF THE SEWING MACHINE
PLK-G2516 electronic pattern sewing machine consists of the following main parts.
<1>: Sewing machine head <2>: Main shaft motor <3>: Halt switch <4>: Control box
<5>: Operation panel <6>: Work holder foot switch <7>: Start foot switch <8>:Gas spring
<9>: Steel stand <10>: Thread stand <11>: Work holder pedal (Option)
<1>
<2>
<4>
<5>
<7>
<9>
<8>
<10>
<6>
<11>
<3>
- 1 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2. INSTALLATION
CAUTION
(1) Please hav
e some specialists, who have enough experience for the sewing machine installations,
install the sewing machine.
(2) Please have a Qualified Electrician perform necessary electric wiring.
(3) Please do not operate until the sewing machine is repaired when any damage or fault is found on the
sewing machine at the installation.
(4) Please do not refurbish the sewing machine.
(5)
If the table and the steel stand are not MITSUBISHI original, the table and the steel stand have to be
strong enough to withstand the weight and Vibration of the sewing machine.
(6) When fitting the caster to the steel stand that
are not MITSUBISHI original, the caster with locking
function has to be strong enough to withstand the weight and Vibration of the sewing machine.
2-1. Preparation of the table
(1) If the table is not MITSUBISHI original, the thickness of the table is required to have 40mm and that is
strong enough to withstand the weight and Vibration of the sewing machine.
(2) Manufacture the table as shown on the figure below.
- 2 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2-2. Preparation of the steel stand
(1) If the steel stand is not MITSUBISHI original, please refer
to the dimensions shown on the figure at the right.
(2) When fitting the caster to the steel stand, the steel stand
has to be strong enough to withstand the weight and Vibration
of the sewing machine.
(3) If the steel stand is MITSUBISHI PLK-G1010 original,
assemble the steel stand with the assembling instructions
enclosed in the packing.
2-3. Installation of the control box
Install the control box with the instructions in the paragraph “[3] Installation” in the CONTROL UNIT
technical manual.
* For connector location see page 7, Section 3-10 of this catalog.
2-4. Installation of the operation panel
Connect the operation panel PLK-G-PAL with the CON Aon the rear of the control box.
* See page 7 for the location.
2-5. Installation of the power switch and foot switch
(1) Mount the power switch (No.1) with the wood screw (No.2) at the position as shown on the figure.
(2) Hook up the connector (No.3) of the power switch to the control box CON B.
(3) Attach the power plug (No.5) to the incoming electrical cable (No.4).
(4) Fix the electric cables with the staples (No.6) to prevent the cables from hanging down.
(5) Hook up the connector (No.8) of the foot switch (No.7) to the control box CON H.
(6) As for the control box connector, refer to the instructions in the paragraph “3-10.Connection of the
electric cables” in this manual.
[Notice] Power plug (No.5) is not included in accessory box.
<1>: Power switch
<2>: Wood screw
<3>: Power switch connector
<4>: Electrical cable
<5>: Power plug
<6>: Staple (six staples)
<7>: Foot switch
<8>: Foot switch connector
<1>
<2>
<3>
<6>
<8>
<5>
<7>
<4>
- 3 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2-6. Installation of the oil pan
(1) Remove the oil pan A and B (No.1,No.2) from the accessory box then, set the oil bottle (No.3) to the
oil pan A and B (No.1,No.2).
(2) Put the oil pan at the position shown on the figure then, fix the oil pan with staples (No.4).
(3) Set the damper cushions (No.5) to the table.
2-7. Installation of the machine head
CAUTION
(1)
The sewing machine is heavy. For the safety, please make sure to install the sewing machine head by
more than one person.
(2) When tilting the sewing machine, please stand at the hinge side and hold the sewing machine with
both hands.Also, please lock the caster on the steel stand.
(3) When tilting the sewing machine, the work clamp slides toward the hinges. Before tilting the sewing
machine, insert the accessory hexagonal wrench into the fitting of work clamp to prevent the sliding of
work clamp. And then before driving the sewing machine, remember
to remove the hexagonal
wrench.
(1) Put the machine head carefully on the damper cushion.
(2) Insert the hinge shafts (No.1) into the hole on the machine then, fix it to the machine with set screws
(No.2).
(3) Fit the hinge rubbers (No.4) and the support plates (No.5) into the holes of the hinges (No.3) then, set
the hinges to the hinge shafts.
(4) Fit the screw holes of the hinges (No.3) to the bolt setting holes then, fix the machine with the socket
bolts (No.6) and the flat washers (No.7).
(5) Fix the head rest (No.8) with safety socket bolts (No.9).
<1>: Oil pan A (large)
<2>: Oil pan B (small)
<3>: Oil bottle (two bottles)
<4>: Staple (eight staples)
<5>: Damper cushion
(six cushions)
<4> <1>
<3>
<5>
Upside
<5>
<2>
- 4 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

2-8. Installation of the tilting detect switch
(1) Install the switch units (No.1) with the SW-MW screws (No.2) so that the switch turns on when the
machine head in initial position is pushed by the machine table.
NOTE The switch unit (No.1) is temporarily fixed at the
back side of the sewing machine bed. Fix it to the
proper place as shown on the right figure.
[Notice] if the switch is not turned on, error [M-038] will occur.
2-9. Installation of the eye guard
(1) Loosen the SW-MW screws (No.2) on the eye guard unit (No.1) then, mount the SW-PW screws
(No.3) to the flat place of the sewing machine with the open guard.
(2) Return the open guard to the initial position then, tighten the SW-MW screws (No.2).
<1>
<2>
<3>
<1>: Eye guard unit
<2>: SW-MW screw
<3>: SW-PW screw (two screws)
Snap!
<1>
<2>
<1>: Switch units
<2>: SW-MW screw (two screws)
<3>
<5>
<7>
<6>
<1>
<2>
<8>
<9>
<4>
<1>: Hinge shaft (two shafts)
<2>: Set screw (two screws)
<3>: Hinge (two hinges)
<4>: Hinge rubber (two rubbers)
<5>: Support plate (two plates)
<6>: Socket bolt (four bolts)
<7>: Flat washer (four washers)
<8>: Head rest
<9>: Safety socket bolt (four bolts)
- 5 -
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com