HIGHLEAD GC20688-BDC, Instruction Manual

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1. PRECAUTIONS BEFORE STARTING OPERATION
1) Safety precautions
(1) When turning the power on, keep your hands and fingers away from the area around/under the
needle and the area around the pulley.
(2) Power must be turned off when the machine is not used, or when the operator leaves his/her seat.
(3) The power must be turned off before tilting the machine head, installing or adjusting the machine, or
when replacing.
(4) Avoid placing fingers, hairs, bars etc. nears the pulley, bobbin winder pulley, when the machine is
operation. Injury could result.
(5) Do not insert fingers into the thread take-up cover, under/round the needle, or pulley when the
machine is in operation.
(6) If a mini motor cover, finger guard, and/or eye guard are installed, do not operate the machine
without these safety devices.
2) Precaution before starting operation
(1) If the machine's oil pan has an oil sump, never operate the machine before filling it.
(2) If the machine is lubricated by a drop oiler, never operate the machine before lubricating.
(3) When a new sewing machine is first turned on, verify the rotational direction of the pulley with the
power on. (The pulley should rotate counterclockwise when viewed from the pulley.)
(4) Verify the voltage and (single or three) phase with those given on the machine nameplate.
3) Precaution for Operating Conditions
(1) Avoid using the machine at abnormally high temperature (35
℃
or higher) or low temperatures (5
℃
or lower). Otherwise, machine failure may result.
(2) Avoid using the machine in dusty conditions. Avoid using the machine in areas where too much
electrical noise, resulted from the high-frequency welder and others, is generated
2. SPECIFICATIONS
Item GC20688-DC GC20688-BDC
Max. Speed 3000rpm 2800rpm
Stitch length 0 to 6mm 0 to 6mm
Needle bar stroke 34mm 34mm
By hand 9 mm 9 mm Presser foot
clearance
By knee 16 mm 16 mm
Rotating hook 1.6 times 2.5 times
Needle DP
×
17 #18-#25 DP
×
17 #18-#25
Presser foot alternation 1-7mm 1-7mm
Auto presser foot lifter Pneumatic Pneumatic
Oil lubrication method Automatic lubrication Automatic lubrication
Bed dimensions 300
×
120 mm 300
×
120 mm
Needle gauge
（
mm
） 3 8
If sewing with stitch length of 6 mm or more, set the sewing speed to 2000 rpm or less.