iSP DeLuxe Stitcher T3000 Technical reference manual

Instructions and parts manual
DELUXE STITCHER
ISP Stitching & Bindery Products
COMPANY INC.
®
Model T3000 Trimmer

2
Trimmer
Introduction........................................................ 3
Specifications..................................................... 3
Safety ................................................................. 4, 5
Installation .......................................................... 6-8
Setup .................................................................. 9
Control Panel..................................................... 10
Opperation ......................................................... 11, 12
Maintenance ....................................................... 13
Adjustments ....................................................... 14
Fuses Access..................................................... 15
Preventive Maintenance ..................................... 15
Knife Removal & Installation .........................16-19
Clearing A Trimming Jam ...............................19
Knife Care Tips................................................. 20
Notes.................................................................. 21
Trouble Shooting............................................... 22-25
Exploded Drawings & Parts Lists ................... 26-40
Motor Wiring ..................................................... 41
Wiring Diagram.................................................. 42
Electrical Schematic........................................... 43
CONTENTS

3
SPECIFICATIONS - MODEL: T3000 Trimmer
Unit Weight: 236 Pounds
Speed: Up to 2,400 booklets per hour (115Vac machine)
Capacity: Minimum
4.00" cut width x 4.13" to fold (trim length)
2 sheets 20# bond thickness
Maximum
12.71" cut width x 9.00" to fold (trim length)
50 sheets 20# bond thickness (0.20")
.625" maximum material trim
Booklets: 4.25" x 5.5", 5.5" x 8.5", 8.5" x 11", 4.75" x 4.75 "CD", & metric sizes
(All booklets with or without trim stock on one or three sides)
Output: Indexing conveyor
Footprint: 16.50" x 18.38"
Dimensions: Height 27.38" Width 26.42" Length without discharge table 25.90"
Length with fully extended discharge table 48.44"
Modes: Trim or No-trim
Electrical: Standard outlet - 115 Volts, 60 Hz, 6 Amps (1/4 HP)
Optional: 230Vac, 50 Hz, 3 Amps
INTRODUCTION
ISP Stitching & Bindery Products is proud to introduce another addition to its complete line of equipment for
booklet making. Now you have the ability to trim books in-line! This combination offers you reliability and
versatility that improves production and reduces downtime.
Trimmer Features:
In-line face trimming of booklets
Jam detection
Electrical interface for communication with ISP BookletMaker System
Safety interlock
See-through top cover

4
Trimmer
SAFETY
A. Top Cover: Blocks access to mechanism that
drives the trimmingknife and conveyorbelts. An
electrical interlock keeps the machine turned off
unless this guard is closed. Do not stick your
fingers underthe top guard!
B. FrontUpper Cover: Blocks access to the trim-
ming knives and the mechanism that drivesthe
uppertrimming knife.
C. Infeed Table Bottom Cover: Blocks access to
infeed conveyor belts.
D. Front Lower Cover: Blocks access to danger-
ouselectric voltage and mechanisms that can pinch
or cut. Be sure to disconnect electrical power
beforeremoving this cover.
E. Right Side Cover: Blocksaccess to low voltage
connections andmechanisms that canpinch or
cut. Do not stick your fingers beyond this cover!
F. Rear UpperCover: Blocks access to dangerous
electric voltage and control circuit connections.
Be sure to disconnect electrical power before
removing this cover.
G. RearLower Cover: Blocks access to low volt-
age connections and mechanisms that can pinch
or cut. Do not stick your fingers beyond this
cover!
H. Left Side Cover: Blocks access to low voltage
connections andmechanisms that canpinch or
cut. Do not stick your fingers beyond this cover!
SAFETY GUARDS (figs 1 & 2)
1 . Make sure electrical power is turned off
before performing any adjustment or main-
tenance.
2 . Keep hands, hair, tools, and clothing clear
of trimming area.
3 . Become familiar with the moving compo-
nents of your machine.Keep fingers away
from areas that could pinch or cut.
4 . BE EXTREMELY CAREFUL when chang-
ing the cutter knife. Severe lacerations or
dismemberment could result from careless
handling procedures.
5 . NEVER REACH UNDER THE KNIFESevere
lacerations or dismemberment could result.
6 . NEVER OPERATE THE TRIMMER WITH-
OUT THE T3000 BOOKLETMAKER AND
SAFETY INTERLOCK SYSTEM.
6 . A well maintained machine is a safer ma-
chine.Clean and lubricate the machine at
regular intervals.Check machine daily for
broken or worn parts. Replace as necessary.
DO NOT attempt to operate the machine if a
part is broken.
7 . See "SAFETY GUARDS" below!If you are
unsure how to safely operate your trimmer,
contact your Service Representative.
SAFETY PRECAUTIONS AND PROCEDURES
DANGER
KEEP HANDS CLEAR OF TRIMMING AREA ANDANY MOVING PARTS!
NEVER OPERATE MACHINE WITHOUT ALL GUARDS IN PLACE!

5
SAFETY GUARDS
A. Top Cover
BFront Upper
Cover
D. Front Lower
Cover
H. Left Side
Cover
E. Right Side
Cover
F. Rear Upper
Cover
G. Rear Lower
Cover
C. Infeed Table
B o ttom
Cover
(Fig 1)
(Fig 2)

6
Trimmer
INSTALLATION
BEFORE UNCRATING:
Examine the crate for visible damage. If the crate is
damaged, the machine might be damaged. Notify
the carrier who delivered the machine.
UNCRATING THE MACHINE:
Carefully remove the machine from itscontainer. Lift
the machine by grasping its strong framework. Tug-
ging on cables, covers, or other delicate components
could cause damage.
Examine the machine for damages incurred during
shipping. Donot install a damagedmachine. Notify
the carrierimmediately, and be sure toget a signed
copy of the Carrier Inspector's Report of the dam-
age incurred. Your service representative will assist
you in determining the cost of repairs.
ELECTRICAL POWER:
The power cord can be plugged into any115V, 60
Hz, 1 Phase, 15 Amp circuit. The machine draws
less than 6 amps.
SAFETY INTERLOCK SYSTEM:
Connect the safety interlock system as follows:
1. Remove the back cover (see fig 3) from the
BookletMaker.
2. Put the bolt through the washer of the safety key
assembly and screw the bolt half way into the
back cover of the BookletMaker (see fig 4).
3. Install and securely tightenthe nut onto the end
of the bolt (see fig 5). The bolt must only be
removeable by removing the nut first.
4. Install the back cover onto the BookletMaker
(see fig 5).
WARNING
NEVER OPERATE THE TRIMMER
WITHOUT THE T3000
BOOKLETMAKER AND SAFETY
INTERLOCK SYSTEM CONNECTED.
(Fig 3)
(Fig 4)
(Fig 5)
Back Cover
of BookletMaker
CB145A Nut
CB379 Screw
RTM1327A Key

7
TRIMMER TO BOOKLETMAKER CONNEC-
TIONS:
1. Adjust the height of the trimmer so that the top
of the trimmerinfeed table isabout even with the
middle of the BookletMakers top dischargeroller
(see fig 6).
2. Position the trimmer behind the BookletMaker
so that the trimmer's infeed table iscentered with
the BookletMakers discharge, and slightlyaway
from the BookletMaker's top dischargeroller (see
figs.7&8).
3. Install the safety interlock key that is hanging
from the bottom of the back cover (see fig 9).
(Fig 6)
(Fig 7)
(Fig 8)
(Fig 9)

8
Trimmer
DISCHARGE CONVEYOR TABLE:
Install discharge conveyor table per illustrations (figs
10, 11, & 12).
(Fig 10) (Fig 11)
(Fig 12)

9
TRIMMER HEIGHT:
The height of the trimmer can be adjusted up or
down slightly byuse of the threaded adjustable cast-
ers and locking nuts on the bottom ofthe trimmer or
trimmer stand (fig 13).
SETUP
TRIM LENGTH:
To set the back stop assembly for the desired trim
length, loosen the two thumb screws (fig 14) and
slide the back stop assembly forward or backward
DISCHARGE TABLE ROLLERS:
Set the discharge table rollers forward for small
booklets or backward for large booklets. To adjust
the rollers, loosen thumb screws (fig 15), move roller
brackets to desired location, then retighten thumb
screws.
(Fig 13)
(Fig 14)
(Fig 15)
to the desired location. There is a pointer on the
side of the back stop assembly that points to a trim
length scale installed on the inside wall of the trim-
mer. Once located in the desired position tighten
the two thumb screws.

10
Trimmer
CONTROL PANEL (figs. 16 & 17)
F E D C B A
(Fig 16)
A. Power On/Off: Green rocker switch turns on or
off power to the machine. Pilot light in switch
glows when power is on.
B. Start/Reset: Black rocker switch energizes control
circuit, which turns on motor. In addition, the
discharge conveyor will run and the work gate
will be raised as long as the switch is depressed.
Note: Opening the top guard shuts off the
machine. It must be restarted as above.
C. Emergency Stop: Cuts off power to the machine's
drive and control circuit when depressed. The
Emergency Stop botton locks in the down (off)
position until manually turned allowing it to pop
back up into the power on position. Restart
machine per B above.
D. Trimming On/Off: Selector switch chooses mode
of operation: "On" for trimming jobs or "Off" to
allow work to pass through without trimming.
E. Knife Change: Black rocker cycles the trimming
knife up and down as long as it is depressed.
(Fig 17)
G
F. Paper Jam When Lit: Glows to indicate that there
is a paper jam.
G. Belt Drive: Rotary switch controls when the work
conveyor belts shut off after incoming work is
sensed. The choice range is 1 through 6. "1"
for quick shut off to "6" for maximum extended
running of the work conveyor belts after incoming
work is sensed.
(SK891C Scene 1)

11
NORMALOPERATION:
1. Work is deposited, from the BookletMaker, onto
the trimmer's infeed conveyor table.
2. The infeed conveyorbelts pull the work into the
trimmer.
3. As the work is pulled into the trimmer, the work
passes above photo sensor number one, located
at the end of the infeed conveyortable. Num-
ber one photo sensor recognizes the work and
tells the control circuit that work is entering the
machine.
4. The infeed conveyor throws the work overthe
lower knife area andinto the middle work con-
veyor belts.
5. The middle work conveyour belts pull the work
overphoto sensor numbertwo, located nearthe
work back stop gate. Number two photo sen-
sor recognizesthe work and tells the control circuit
that work has entered the trimming area.
6. The control circuit then lets the conveyor belts
continue to run, for a short period of time, to
allow the work to run into and square up against
the back stop gate. The conveyorbeltsare then
stopped.
7. At this time the control circuit energizesthe trim-
ming clutch solenoid, which releases the trimming
clutchtobeginthe trimming cycle.
8. The knife bar assembly begins to cycle down-
OPERATION
JAM DETECTION:
If the work does not finish passing over number one
photo sensor, within normal operating time, the con-
trol circuit recognizes this as a jam. The trimmer
drive shuts off. The "PAPER JAM WHEN LIT"
indicatorlight becomeslit. A normally closed relay
in the control panel (used as the jam output to an-
other machine or device)closes.
ward.
9. As the knife bar assembly cycles downward the
gate clamp beginsto squeeze, flatten, and hold
the leading end (or fold)ofthe work. The front
clampthen beginsto squeeze, flatten, and hold
the trim end of the work.
10. As the knife bar assembly continues downward
the knive begins to cut/trim the work.
11. The knife bar then begins cycling back upto the
top of it's stroke (starting position).
12. As the knife barapproachesthe top of it's stroke,
it passes the knife bar proximity sensor. The
proximity sensor tells the control circuit that the
knife bar has reached the top of it's stroke.
13. The control circuit then denergizes the trimming
clutch solenoid which stops/endsthe trimming
cyle.
14. The control cicuit thenenergizes the gate sole-
noid, which lifts up the gate,and energizesthe
infeed and middle conveyor belts.
15. The trimmed work is thenconveyed out of the
trimmer and deposited on the discharge table.
16. Whenthe next work to be trimmed is sensed by
number one photo sensor (on infeed table) the
control circuit energizesthe discharge table clutch
for ashort time.While the discharge clutch is
energized it runs the discharge table conveyor
belts. The belts move the work on the dis-
charge table a shortdistance. The control circuit
then cuts power to the discharge table clutch.
The discharge table conveyor belts and work
stopmoving until the next piece of work to be
trimmed causes the discharge table cycle to re-
peat.
STARTUP:
1. The "BELT DRIVE" rotary switch shouldbe set
to "1" position.
2. Depress "POWER ON" switch to turn on power.
3. Depress "START/RESET" switch to energize
control cicuit. The electric motor will now en-
ergize and begin the infeedandinternal convey-
ors.
4. Select "TRIMMING ON". Run the
BookletMaker so that a booklet is deposited on
the trimmer's infeed table. The booklet will be
transported into the trimmer, trimmed, and ejected
onto the output conveyor. The output conveyor
runs for a short duration each time a booklet is
sensed entering the trimmer. Thisensures that
there isnogap between work on the discharge
table.

12
Trimmer
JAM CLEARING & RESTART:
1. Turn off power to the trimmer.
2. Remove work jam. DO NOT REACH UN-
DER THE KNIFE! SEVERE LACERA-
TIONS OR DISMEMBERMENT COULD
RESULT.
3. Close all safety covers.
4. Depress "POWER ON" switch to turn on power.
5. Depress "START/RESET" switch to energize
control cicuit. The electric motorand conveyor
clutches will energize so trimming may resume.
JAM OUTPUT:
When a jam occurs a normally closed relay in the
control panel closes. This relay is connected to a
.141" diameter female phone jack outlet (fig 18)lo-
cated on the power cord bracket. Any device
plugged into the phone jack will receive a closed
circuit signal, which that device can use to shut down
any upstream machines feeding work tothe trimmer.
DANGER
NEVER REACH UNDER THE
KNIFE! SEVERE LACERATIONS
OR DISMEMBERMENT COULD
RESULT!
(Fig 18)
BELT DRIVE:
The purpose of the "BELT DRIVE" rotary switch
(fig 19) is to make sure the work will square up
against the back stop to provide a good square cut
booklet.
The "1" setting meansthat the internal conveyor belts
will shut off quickly after the work is sensed allowing
time for the work to square up against the back stop.
If the workdoes notsquare up fully against the back
stop before being trimmed, rotate the switch to
postition "2". This position allows the internal con-
veyor belts to run for anadditional shortperiod of
time (afterthe work is sensed) so that the work will
square up before being trimmed.
Positions "3" through "6" allow for progressively longer
conveyor belt runningtime for unusual work, such as
work that may slip on the conveyor belts, to square
up against the back stop.
(Fig 19)(SK891C Scene 1)
To manually remove a paper jam from the knife:
Turn off the power to the Trimmer
Remove the Right Hand side cover (RTM1101F)
Disengage Clutch (RTM1093F) by hand,
then using a wrench rotate the Knife Clutch Shaft
(RTM1094F) clockwise by gripping the Manual
Cycle Collar (RTM1349F). This should complete
the cutting cycle.
If after completing this cutting cycle the machine
needs to be cycled again, the clutch (RTM1093F)
will need to be released by hand again.

13
MAINTENANCE
The instructions on the following
pages are for the use of trained
personnel only!
Attempting to perform repair and
replacement procedures without
proper training may cause
machine damage or operator
injury!

14
Trimmer
ADJUSTMENTS
KNIFE BAR SENSOR ADJUSTMENT:
The knife bar must always stop at the top of it's
stroke in order for work to enter the trimmer. If the
knife bar stops too low work will not be able to get
past the front clamp and/or knife, and work jams will
result.
The function of the knife bar sensor is to signal the
control circuit when the knife bar has reached the
top of it's stroke so that the control circuit can
denergize the trimming clutch causing the knife bar to
stop at the top of it's stroke.
1. With power on and drive motor running, use the
knife change toggle switch to jog the knife bar to
the top of it's stroke. If you can not stop the
knife bar at exactly the top of it's stroke, it is
better to stop it slightly before top of stroke
rather than after top of stroke.
2. Turn off and unplug power.
3. Remove the left cover.
4. Loosen the screws of the knife bar sensor, move
the sensor so that the top of the sensor is even
with the top of the knife bar (fig 20).
5. Reinstall the left cover.
BACK STOP GATE ADJUSTMENT:
The function of the back stop gate is to provide a
surface for the work to square up against so that the
knife will cut the work squarely. The back stop gate
must be parallel to the bottom knife.
1. Run several pieces of work through the trim cycle.
2. By looking at the work, determine how much
one side or the other of the back stop gate must
be moved forward or backward.
3. Turn off and unplug power.
4. Remove rear discharge table.
5. Remove rear upper cover.
6. Open top cover.
7. Slide backgage carriage to front of machine.
8. Using a 3/8" box wrench and a 1/8" hex wrench
loosen and shift one of the shoulder screws (fig
21) locating the back stop gate (which will also
shift the back stop gate) forward or backward
the amount needed to square up the trim. Note:
It may be necessary to first move one shoulder
screw and then the other in order to obtain the
maximum amount of adjustment.
9. Reinstall lower cover and discharge table.
(Fig 21)
(Fig 20)

15
(Fig 22)
FUSE ACCESS
Turn power off and unplug the machine. Remove
the rear upper cover (removal of four screws re-
quired) above the work discharge area of the ma-
chine. There are two fuseholders mounted on the
din rail. To access the fuses, pull out the fuse
compartment (fig 22) of each fuse holder and re-
move the fuses.
A. Motor Fuse: Fuse protectsthe motorinput lines
of the machine. If this fuse fails, the motor will
not run. Replace with 6 amp fuse ISP
#RTM1303F for 115Vac machine or 3 amp fuse
ISP #RTM1330F for 230Vac machine.
B. ControlCircuit Fuse: Fuseprotects transformer.
If this fuse fails, none ofthe 24VDC components
will operate. Replace with 1 amp fuse ISP
#RTM1302F for 115Vac machine or 0.5 amp
fuse ISP #RTM1329F for 230Vac machine.
LUBRICATION:
Disconnect electrical power. Next, remove the front
cover and both side covers.
UseSAE-20 oil to lubricate porousbronze bearings,
plastic bearings, chains, shafts, and cutter bar link-
ages.
CLEANING:
Use alcohol to clean the belts.
HARDWARE:
Remove the covers to check all nuts and bolts for
tightness. Loose hardware is the cause of most
component wearand in the electrical area couldcause
short circuits and/or shock.
PREVENTATIVE MAINTENANCE

16
Trimmer
UPPER KNIFE REMOVAL & INSTALLATION:
CAUTION: Changing knivescan be very dan-
gerous unless safety precautions are observed
and extreme care is taken whenhandling knives
Keephandlingofunprotected knivestoan
absolute minimum.
Warn people of any unprotected knife.
Knife changing is a ONE PERSON OP-
ERATION. Having more than one person
trying to changeknives invites accidents.
1. Use the "Knife Change" rocker switch to move
the knife bar to the bottom of it's stroke.
2. Turn off power and unplug power cord.
3. Removebottom cover of infeed table.
4. Remove front upper cover and the lower bar
that the front upper cover attaches to.
5. Remove the left and right side covers.
6. Remove the four screws and nuts holding the
top infeed table's conveyorbracket to the infeed
table.
7. Carefully lift the right side ofthe upper infeed
conveyor bracket off the infeed table.Swing it
out and lay it onthe infeed table (fig 23). NOTE:
Be sure the round belt does not come off pulleys
and be sure the separating finger stays between
belts where they cross or the infeedtable con-
veyors wil not operate properly when reas-
sembled.
8. Loosen, BUT DO NOT REMOVE, all upper
knife screws so that the upperknife can be slid
away from the knife bar on the screws about 1/
8 inch (fig 24).
9. Remove only the four middle knife screws so
that the two end screws remaining are holding
the knife about 1/8 inchaway from the knife bar
(fig 25).
10. Insert a strong length of wire through the top
right screw hole in the knife. Pull the wire
KNIFE REMOVAL & INSTALLATION
(Fig 23)
(Fig 25)
(Fig 24)

ISP Stitching & Bindery Products
17
A Division Of S amuel Strapping
S y stems
through and securelytie the wire ends to make
a strong secure handle that will be used to lift
that end of the knife when the right screw is
removed (fig 26).
DANGER
NEVER PUT HAND OR FINGERS
BELOW KNIFE WHEN REMOVING
OR INSTALLING. SEVERE LAC-
ERATIONS OR DISMEMBERMENT
COULD RESULT.
11. Hold securely onto the wire handle and remove
the right knife screw.
12. Use both hands to swing knife up, while pivoting
on remaining lower left hand knife screw.
13. While holding knife securely with one hand, re-
move last knife screw, and remove knife from
trimmer (fig 27).
14.Put blade in the scabbard immediately and se-
cure the knife retaining screws.
15. Reverse this procedure to install upperknife.
LOWER KNIFE REMOVAL:
THE UPPER KNIFE MUST BE REMOVED (per
steps 1-13 of Upper Knife Removal page 13 &14)
BEFORE THE LOWER KNIFE IS REMOVED.
CAUTION: Changing knivescanbe very dan-
gerous unless safety precautions are observed
and extreme care is taken when handling knives
Keep handling of unprotected knives to an
absolute minimum.
Warn people of any unprotected knife.
Knife changing is a ONE PERSON OP-
ERATION. Having more than one person
trying to changeknives invites accidents.
1. Once the upper knife is removed, cycle the knife
bar back up to the top of it's stroke by manually
releasing the trim clutch and turning the large
pulley on the clutch clockwise (fig 28) until the
knife bar is all the way up.
2. Loosen the five screws securing the lower knife
(fig 29).
3. Remove the lower knife.
(Fig 26)
(Fig 27)

18
Trimmer
LOWER KNIFE INSTALLATION &
ADUSTMENT:
THE UPPER KNIFE MUST BE REMOVED (per
steps 1-13 of Upper Knife Removal pages 15-16)
BEFORE THE LOWER KNIFE IS INSTALLED.
1. Once the upper knife is removed, cycle the knife
bar back up to the top of it's stroke by manually
releasing the trim clutch and turning the large
pulley on the clutch clockwise ( fig 28) until the
knife bar is all the way up.
2. If installing a new or different lower knife, the set
screws which push the lower knife forward
against the upper knife, must be turned out so
that the lower knife will not be in the way of the
upper knife cycling down.
3. Install the five lower knife flat washers and
screws, but do not fully tighten because the lower
knife must be free to move during the next steps
of installation/adjustments.
4. Manually cycle the knife bar (similar to step one
) to the bottom of it's stroke. Install and secure
the upper knife per upper knife removal & in-
stallation procedure page 13 & 14
5. Push lower knife firmly against the upper knife.
Turn the lower knife adjustment set screws gen-
tly against the lower knife and secure with the
nuts. Manually release the trim clutch and turn
pulley until knife bar is at top of stroke.
6. Tighten the lower knife securing screws. DO
NOT PLACE FINGERS OR HAND BELOW
UPPER KNIVE.
7. Manually release the trim clutch and cycle the
Lower Knife Securing Screws
(Fig 28)
(Fig 29)
WARNING
TURNING THE CLUTCH PULLEY
COUNTER CLOCKWISE AND/OR THE
KNIFE PULL DOWN DRIVE SHAFT IN
REVERSE WILL DAMAGE THE CLUTCH.

19
knife bar through one cycle to check that the
upper knife blade passes the lower knife smoothly
without obstruction.
8. Place a single sheet of paper (large size) be-
tween the upper and lower knives, manually
release the trim clutch and cycle the knife bar
through one cycle. KEEP HANDS CLEAR!
9. Checkthat a clean cut is obtained across the full
width of the knive blades.
10. If necessary loosen the lower knive securing
screws at the point where adjustment is needed.
Loosen the lower knife bar adjustment screws/
nuts, move the lower knife closer to the upper
knife by turningthe appropriate adjustment screw
(fig 30) (1/6 turn at a time), retighten lower knife
securing screws and nuts of adjustment screws.
11. Perform another test cut and make further ad-
justmentsif necessary.
CLEARING A TRIMMING JAM:
Lower Knife
Adjustment Screws
(Fig 30)
If the maximum capacity of the trimmer is exceeded
(50 sheets of 20# stock or 0.20" work thickness)
the trimming knife will stall near the bottom of the
trim cycle and not finish cutting the work. If this
happensthe jam should be cleared by removing the
upper knife (follow steps 2 through 15 of UPPER
KNIFE REMOVAL & INSTALLATION proce-
dure page 16) and finishing the trim cycle by hand
(follow step 1 of LOWER KNIFE INSTALLA-
TION & ADJUSTMENT procedure page 18).
WARNING
DO NOT TRYTO CLEAR THE TRIMMING
JAM BY TURNING THE CLUTCH PULLEY
COUNTER CLOCKWISE AND/OR BY
TURNING THE KNIFE PULL DOWN
DRIVE SHAFT IN REVERSE OR THE
CLUTCH WILL BE DAMAGED.

20
Trimmer
CAUTION: KNIFE SAFETY! Knives are
DANGEROUS!!! They are heavy and very
sharp, even after use. Keep the edge away
from your body and keep the area clear of
other people when handling knives. Never
touch the cutting edge! To prevent personal
injury and damage to the knife, always keep
knives in their holders with screws tightened.
Others entering the area may not be aware of
the dangers. Never attempt to hone, polish, or
service the knife in any way. Failure to follow
safety procedures may result in severe lacera-
tions or dismemberment.
Knife blade life, or the time between sharpenings,
can be affected by many factors. One important
factor is the type of paper being cut. Abrasive
paper, such as recycled paper, soft paper such as
newsprint paper, and bound books can all signifi-
cantly shorten knife blade life. Cutting pure paper,
such as bond paper with no recyled content will
cause less wear on the cutting blade. In all cases
the operator should continually check the quality of
the cut to determine when the knife needs to be
sharpened. Some characteristics that indicate a blade
needs sharpening are:
The knife hesitates or stalls while making a cut.
The top sheets are not all cut to the same length
(usually the top few sheets are longer than the
rest of the sheets - this is sometimes called
"draw")
Cut marks appear on the cut face of the paper.
The knife and/or drive makes a "rough" sound
as the knife passes through the paper.
Nicks are visible on the cutting edge of upper
or lower knife.
To prevent corrosion, knives are coated with light
oil. It should be REMOVED WITH CARE.
While removing or installing a knife, be careful not to
allow the cutting edge to bump against the machine
or other knife. Nicks will result.
If a knife bolt is damaged, replace it.
Always keep knife bolts securely tightened.
Store knives in a dry environment to prevent corro-
sion.
Never attempt to service a knife in any way without
proprer training. It is recommended to maintain a
spare set of knives as a back up.
KNIFE CARE TIPS