Maimin VS1-8, VS2-8 User Manual

THE

CUTTER'S

EDGE

VARISPEED

STRAIGHT KNIFE

MACHINE SERIAL NO.

DATE

OF

PURCHASE

__________

I

I

INSTRUCTIONS & PARTS LIST

120V: Model VSI-8 (From December 1995, Serial No, AF13-A6L-27825 up)

220V: Model VS2-8 (From August 1995, Serial

No.

AF43-A6M-27469 up)

EDITION 2.8

NOTE: These pages are a supplement to Maimin Straight Knife Instructions

Refer to those lists for
INSTRUCTIONS carefully.

Book #22155

all

information not included in this supplement. In particular, read SAFETY

arid

Parts Lists (Model

_

A)

H.

MAIMIN CO., INC., P.O.BOX 549, ROUTE 341, KENT, CT 06757 USA

TEL: [phone], USA:S00-243-4645, FAX:[phone]

PIUSTED

!:\liSA

g:\apps\works\

!99;5\varispd.wps

IMPORTANT

SAFETY

INSTRUCTIONS

When using your cutting machine, basic safety instructions should always be followed
including the following:

This cutting machine

DANGER--to

1.

Do not install or store this machine in a wet location.

WARNING--to

1.

2.

3.

4.

Use machine only for its intended use as a portable cutting machine.
Turn machine to "OFF"(O) before connecting or disconnecting power cord.
Connect this machine to a properly grounded outlet only. See Grounding Instructions.
Always disconnect electrical connector from machine when not using it, before servicing it, or
changing blade.

5.

6.

Do not leave machine unattended while it is connected to power outlet.
Do not operate machine with a damaged cord or
take to a qualified serviceman for repairs. Incorrect assembly can cause electric shock when the
machine is used.

7.

8.

9.
1

11.

Keep hands and fingers away from blade and moving parts.
Keep guards in place and in working order,
The knife key and other wrenches must be removed from machine before starting the motor. .

0.

Keep ventilation openings
Keep machine clean and blade sharp for best and safest performance.

reduce the risk

reduce the risk

is

for commercial use only. Read all instructions before using.

of

electric shock:

of

bums, fire, electric shock, or injury to persons:

if

machine has been dropped. Do not disassemble--

of

machine. free from dust and lint.

SAVE

GROUNDING

This machine must be grounded. In the event
least resistance for electric current to reduce the risk
Ground

Shield surrounding the Terminal Pins; this Ground Shield is designed to be used with a Maimin

Grounded Connector, part #458A or 458B.

DANGER

--

Improper connection

Check with a qualified electrician or service man
understood or

Do not modify the Ground

if

in doubt

as

to whether the machine is properly grounded.

Shield provided with this machine.

THESE

INSTRUCTIONS

INSTRUCTIONS

of

malfunction or breakdown, grounding provides a path

of

electric shock. This machine is equipped with a

See Wiring instructions supplied with the Connector.

of

the Maimin Connector can result in a risk

if

the grounding instructions are not completely

Use correct wire sizes with the Maimin Grounded Connector.
U.S.A only: 1 Phase: Use AWG

16/3

SJ, SJT or SJE

3 Phase: Use AWG 16/4 SJ, SJT or SJE

International: 1 P+N+: Use 3X1,

3 P+: Use

4Xl,

Omm

Omm

CEE (2)

CEE (2)

61

61

of

electric shock.

of

H.

Maimin

Co., Inc. P.O. Box 549

Route

341 Kent,

CT

06757 U.S.A.

Printed in

USA

OPERATING INSTRUCTIONS

TO START

I.

Oil crosshead at oil cup.

2.

Attach connector to terminal pins.

3.

Move switch from

11011

to

11 1 11

TO SHARPEN BLADE

A 120V MOTOR:

1 . Remove machine from material.

2.

3.

Lower presserfoot leg to baseplate.
Move switch from position
this position.

4.

5.

Pull sharpener trigger and release
When sharpening cycle

It will return to position " 1

B: 220V MOTOR:

1.

2.

3.

4.

Remove machine from material.
Lower presserfoot leg to baseplate.
Push pushbutton gently and hold
When sharpening cycle

VARISPEED MOTOR INSTRUCTIONS AND PARTS LIST

•

to 112

11

and hold

in

11 I 11

it.

is

complete, release switch.

".

in

this position.

is

complete, release pushbutton

1.

DESCRIPTION

The MAIMIN V ARISPEED

is

designed

to

operate on AC current. It has a direct current motor

with a permanent magnet field, controlled by an adjustable speed SCR drive.

2.

3.

VOLTAGE CONNECTION

Connect only

to

voltage shown on nameplate.

NAMEPLATE RATlNGS

Values are for full load conditions.
Do

not use motor for prolonged periods at line currents greater than shown

4. OVERLOAD PROTECTION

The control box

is

fused with a time-delay ceramic-tube fuse; 8 AMP for 120V, 5 AMP for 220V

on

nameplate.

Do not use a larger fuse without consulting Maimin.

5.

MOTOR ROTATION

Remove button plug (Part 446Q) from back ofhousing (Part 15235).

is

Correct rotation

6.

blade)

SLOW START

Your

If

motor rotates in wrong direction, change by reversing black and white wires on control

control is equipped with a circuit for slow starting and controlled acceleration.

delay between the

7.

MAGNETS

Avoid dropping
(About 150% normal). Magnets can only be purchased as part

counter-clockwise looking at end

timl

you turn on the machine and it reaches set speed is normal.

1.

or

sharp blows

to

motor. Demagnetizing occurs only with severe overvoltage.

of

armature. (Bands must rotate away from

of

a magnet and shell assembly.

The short

8.

BRUSHES

Brushes (Part 15237) should be inspected periodically
new brush
speed and load. We suggest inspection brushes every

is

1.250" (31.

75

mm). Minimum operating length

to

insure uninterrupted service. Length

is

0.500" (12. 7 mm). Life depends on

1000 hours.

of

TO INSPECT BRUSHES:

Remove brush cover (Part 15238) and insulator (Part 15239). Depress brush clip (Part 15241). so

to

disengage tabs

as
head screw, remove lug and withdraw brush (Part 15237).

of

clip and remove. Remove roll spring (Part 15240). Loosen Phillips pan

9.

10.

MOTOR BEARINGS

Bearings are lubricated for
32 keep-nuts (Part 857N) and back housing (Part 15235).
armature shaft. To remove front bearing, motor must be disassembled. See Motor Disassembly.

is

After motor

separated from front housing, pull bearing

life.

Rear motor bearing (Part 403) can be replaced by removing four 8-

Using bearing puller, pull bearing

off

armature shaft using bearing puller.

MOTORDISASSEMBLY

In order to disassemble motor, the crank must be removed. Remove sharpener and connecting rod.

of

Insert handle
armature. Disconnect two armature leads (A+
Remove nut for strain relief(Part 465K) and remove cable with quick disconnects. To remove
back housing (Part 15235) from shell and magnet assembly remove four 8-32 kep-nuts (Part
857N).

Pull brushes (Part 15237) out and away from commutator so as not to damage them when pulling
armature from shell and magnet assembly (Part 15354).

With rubber
from front housing

knife key into hole in face

or

plastic headed hammer tap end

of

crank and tap clockwise until crank loosens on

& A-) from control on box (Part 447Z).

of

armature until complete motor separates

CAUTION; Do not lose wave washer (Part 15195) at back housing.

11.

MOTORASSEMBLY
CAUTION:

commutator -end

of

start

Avoid pinching your fingers and scarring commutator or wires. Slide

of

armature through magnets by using the edge

insertion.

of

the ball bearing to guide

off

TROIIBI.E -SHOOTING GUIDE

Symptom

Motor does not run,

off

Lamp

Motor does not run,
Lamp on

Motor top speed
slow or too fast

Motor stalls when cutting

is

too

Possible Cause

I. Blown fuse

2.

Defective switch

3.

Wrong voltage

I. Worn brushes

2.

Loose connection

3.

Defective control

I. Under voltage or over voltage I.&

2.

Wrong setting

I.

Worn brushes

2. Loose connections

3.

Overload

of

control

Actions to Correct

I.

2.

3.
on nameplate.

I. Replace.

2.
attached. Check
on control.

3.

from-A

180Vwhen speed control
"10"; Adjust trim pot to desired

speed.

with control from box. Set knob
at "100"; Adjust MAX trim pot at
desired speed. Set knob at
Adjust trim pot

I. Replace.

2. Check

3.
factory. Limit can be raised by
adjusting CL clockwise.

Replace fuse.
Replace switch.
Connect only

Remove cover with control

Using a DC Volt meter; volts

to

2.

Remove cover

Current limit has been set at

to

voltage shown

all

7 connections

+A should be 90V

to

desired speed.

all

connections.

is

at

"IO";

or

Motor runs at set speed but
does not

button or on p sition
for 120V only

Motor "Cogs" (pulsing or
irregular rotation)

"Sparking" at rear

Repeated fuse blowing

speedip

with push

I

of

motor.

"2"

I. Defective pushbutton 443J

220V only)

(for

2.

Defective switch 443H

(for I20V only)

I. Too much IR compensation

2.

Dust from carbon brushes

I.

Dust from carbon brushes

I. Low voltage

2.

Loose connections

3.

Worn brushes

4.

Defective electronic components

2.

Replace.

I. &

I.

Adjust IR counter clock-wise 30

at a time until cogging stops.

2.

Remove dust from rear housing

with compressed

1.

Remove dust from rear housing

with compressed air.

1.

Check input-should be at least

IOOV

or

218V AC.

2.

Check

all

connections.

3.

Replace

4.

Replace control.

air

co

497P

(1)

]5355

(120V)

15356

(220V)

15357

~-15354

I I (120V)

I &

(220V)

~15238115243

~15242

15235

8-

857N

15345
15346

120V
220V