Sealer Sales SS-1622MK-Combo User Manual

S

M

D

eLa

e

S-Serie

s

S

e

w

2

a

o

1

c

o

e

L-Bar

Sealers

Shrink

Tunnel

Comb

s

odel:

istribut

S-162

d By:

MK-C

mbo

V

rsion 1.0

st Updated:

10/15/19

S

aler Sales |

ww.sealers

les.com | Tel

: 818-718-88

8 | E-mail:

ontact@seal

rsales.com

Sealer Sales Page 2

SS-1622MK-Combo Service Manual

IMPORTANT - PLEASE READ THIS CAREFULLY

The development of a good safety program, that is rigidly
enforced, is absolutely imperative when involved in the operation of
industrial equipment. Our machinery is well designed and includes
extremely important safety features. The part you the user play
through proper installation and maintenance procedures is of far
greater significance than our designs. Only properly trained
individuals following rigidly enforced safety rules, as recommended
by A.N.S.I. and O.S.H.A., should be allowed to operate these
machines.

Sealer Sales Page 3

SS-1622MK-Combo Service Manual

TABLE OF CONTENTS

___________________________________________________________

Preface

Unpacking 5-9
Warranty Notice 10
Warranty 11-12
Warranty Exceptions 13
Warnings 14-16

Description and Specifications 17
Installation and Basic Set-Up 18-26
Film Threading Diagram 27
Sequence of Operation 28-31

Tunnel Section

Front Panel Diagram 32
Sequence of Operation 33-35
Temperature Control Adjustment 36

TROUBLESHOOTING 37-64

No Heat to “Micro Knife” Band Ribbon 37-42
Unbalanced Heat from Front and Side 43-44
Weak Seals/Poor Cut Off 45-46
Conveyor Will Not Run 47-49
Magnetic Hold Down 50-52
Excessive Film Drag 53
Excessive Film Winding 54
Conveyor Malfunction 55-58
No Air Flow 58-60
No Heat 61-63

MAINTENANCE 64-90

Sealer Section 64

Micro Knife Band Ribbon Adjustment 64-66
Micro Knife Band Ribbon Replacement 67-72
Tape Replacement 73

Sealer Sales Page 4

SS-1622MK-Combo Service Manual

Sealing Pad Replacement 74
Sealing Pad Pressure Adjustment 75
Adjust Height of Seal Bar 76
Pulse Switch Adjustment 77
Adjust Magnet Seal Pressure 78
Conveyor 79
Conveyor Motor Replacement 80
Replacing Seal Bars 81-84
Installing Transite Channels 85-86
Installation of Band Ribbon Compensator 87-89

MAINTENANCE 90-105

Tunnel Section 90

Replacing Conveyor Rollers 91-93
Replacing Idler Shaft 94
Replacing Drive Shaft 95
Replacing Conveyor Motor 96
Replacing Heater Bank 97-98
Temperature Controller Replacement 99
Blower Motor Replacement 100-102
Wear Rails Lower Adjustment and Replacement 103-104
Wear Rails Upper Adjustment and Replacement 104-105
Electrical Panel Diagram-Tunnel 106
Electrical Panel Diagram-Sealer 107

Electrical Schematic-Tunnel Section 108
Electrical Schematic-Sealer Section 109

Parts Nomenclature-Tunnel 110
Replacement Parts List-Tunnel 111-113
Parts Nomenclature-Sealer 114
Replacement Parts List-Sealer 115-118
Spare Parts List 119

Sealer Sales Page 5

SS-1622MK-Combo Service Manual

UNPACKING

THOROUGHLY INSPECT EQUIPMENT UPON ARRIVAL.

If goods are received short or in a damaged condition, it
is important that you notify the carrier’s driver before he leaves
your company and insist on a notation of the loss or damage
across the face of the freight bill. Unless this is done, no claim can
be enforced against the transportation company.

If concealed loss or damage is discovered, notify the
carrier at once and insist on an inspection. This is absolutely
necessary! A concealed damage report must be made no later than
ten (10) days from the date the shipment was delivered. Unless you
do this, the carrier will not consider any claim for loss or damage.

The carrier’s agent will then make an inspection and grant a

concealed damage notation. If you give the transportation company
a clear receipt for the goods that have been damaged or lost in
transit, you do so at your own risk and expense.

All claims must be filed within 10 days of delivery date or
carrier will not accept them.

Sealer Sales is willing to assist in every possible
manner to collect claims for loss or damage; however, this does
not hold Sealer Sales responsible for collection on claims or
replacement of material.

UNPACKING

Sealer Sales Page 6

SS-1622MK-Combo Service Manual

Your new

SS-1622MK-COMBO

comes bolted to a pallet and has a tri-walled corrugated box strapped
to the pallet to protect it.

1. If your machine does not arrive in this condition, write on

shipping paperwork that outside of box is damaged.
Concealed damage may have occurred.

2. Remove stretch film and Poly Bag covering machine.

UNPACKING

Sealer Sales Page 7

SS-1622MK-Combo Service Manual

3. Remove film rack from under L-Bar Sealer.

4. Check film rack. You should have

(a) Film Rack
(b) (4) mounting bolts
(c) (1) adjustable knob
(d) (2) film roll guides

UNPACKING

Sealer Sales Page 8

SS-1622MK-Combo Service

Manual

5. Install crank handle on tunnel hood using the two Allen bolts

provided.

6. Mount film rack roll guides as shown.

7. Remove bolts holding machine to pallet using 13-mm wrench.

UNPACKING

Sealer Sales Page 9

SS-1622MK-Combo Service

Manual

8. Place forks of forklift under center of lower support bar of

frame and lift off pallet.

9. Place in desired location and use locking casters to set in place.

UNPACKING

Sealer Sales Page 10

SS-1622MK-Combo Service Manual

IMPORTANT WARRANTY NOTICES

OPERATING AND MAINTENANCE MANUAL

The operating and maintenance manual has been
carefully prepared to provide the user with all the information needed
to properly install, operate, and maintain your Sealer Sales
equipment.

Please read this manual carefully and refer to it
for information on the care and use of your Sealer Sales equipment.
It is recommended that additional copies be ordered for use
by production, maintenance, and supervisory personnel. Although
the design of this equipment incorporates safeguards to
protect personnel, care should be used in operating, adjusting, and
servicing.

Attention is directed to the warranty that accompanies all
your Sealer Sales equipment. The terms and conditions of this
warranty apply only to unmodified units. Any

unauthorized modifications to the equipment
automatically voids this warranty.

WARRANTY NOTICES

Sealer Sales Page 11

SS-1622MK-Combo Service Manual

Sealer Sales

WARRANTY

EFFECTIVE 1-1-99

Sealer Sales, Inc. warrants each new product
manufactured to be free from defects in material and
workmanship for a period of (1) year from date of shipment by
Sealer Sales.

This warranty is not transferable with any subsequent resale.

Defective parts under warranty must be returned to Sealer

Sales freight prepaid. Sealer Sales’s sole obligation and
purchaser’s sole remedy in the event of a warranty dispute shall

be, at Sealer Sales’s option , to repair or replace the part in
question. Labor incurred in removing or installing the defective
part is not covered by this warranty. Prior to returning any
parts for any reason, contact
Sealer Sales for a Return Authorization Number. This number
must accompany all returns.

This warranty shall not apply if equipment has been tampered
with, misused, improperly installed, altered, or has received damage
due to abuse, carelessness, accident or failure to follow
recommended regular maintenance procedures or has been serviced
by someone other than a duly authorized factory
representative without the express written consent of Sealer Sales,
Inc.

This warranty is in lieu of all other warranties, expressed or

implied, including but not limited to warranties of merchantability

and

WARRANTY

Sealer Sales Page 12

SS-1622MK-Combo Service Manual

fitness for a particular purpose, non-infringement or any other
matter.

Sealer Sales shall have no liability to any person for direct,
indirect, incidental or consequential damages or delay resulting
from any defect negligence, or tort and customer hereby waives for
itself any and all claims for punitive damages and all claims of
negligence of strict liability or both. In no event shall our liability
exceed the purchase price of the product that was actually paid.

Sealer Sales reserves the right to make changes,
additions, or improvements to our products with no obligation
to make such changes in any previously shipped product covered by
this warranty.

Sealer Sales shall not be held liable for any damages
arising out of nor in connection with the operation of the
equipment should customer or its agent fail to maintain
equipment in safe operating condition. This warranty shall become
unenforceable if and to the extent the customer or its agents
remove, disconnect, or otherwise render useless any safety device
and or parts designed or affixed by us or fails to maintain and
service equipment in a manner as advised.

Sealer Sales provides a one-year warranty on
parts, excluding shipping or freight costs for
replacement parts. All warranty parts are shipped
F.O.B. Ontario, California. Service Labor to install part is
not covered under warranty

WARRANTY

Sealer Sales

SS-1622MK-Combo Service Manual

Page 13

WARRANTY EXCEPTIONS

The following parts are an exception to the general
warranty list on page 10. Each part listed below shall carry a 30-day
warranty unless designated otherwise.

SS-1622MK-COMBO Parts

1. Conveyor Belt

2. Fuses

The following sealer parts are considered to be consumable and

not under warranty:

1. Silicone Sponge

2. PTFE Tapes

3. Nylon Sleeves

WARRANTY EXCEPTIONS

Sealer Sales Page 14

SS-1622MK-Combo Service Manual

WARNINGS

Every effort has been taken to ensure your safety while
operating this machine; however, there still remain certain risks. Do
not allow this machine to be operated before informing all personnel
of the following warnings.

WARNING........

Do not tamper with the electrical wiring. Only use a
licensed electrician for maintenance. Always disconnect the electrical
power before attempting any maintenance to all electrical and/or
moving parts.

WARNING........

In order to prevent injury to personnel and/or machinery
DO NOT INCREASE SETTINGS OR RATINGS ON EITHER ELECTRICAL
OR MECHANICAL OVERLOAD SAFETY DEVICES.

WARNING........

KEEP HANDS AWAY FROM MOVING CONVEYORS AND
ASSEMBLIES. Conveyor belts that have become worn or frayed are
capable of being hazardous. They should be replaced promptly.

WARNING........

NEVER OPERATE THIS OR ANY MOVING EQUIPMENT
WITHOUT ALL COVERS AND GUARDS IN PLACE. The internal
mechanism of most packaging machinery contains numerous shear,
pinch, and inrunning nip points, many of which are capable of
causing severe injury and/or permanent disfigurement.

WARNINGS

Sealer Sales Page 15

SS-1622MK-Combo Service Manual

WARNING........

To minimize the potential for personnel injury, always be
sure that machine operators and others working on the machinery
are properly trained in the correct usage of the equipment and
properly instructed regarding the safety procedures for operation.

WARNING........

Heat sealing arms and sealing jaws on packaging
machinery can become very warm after a period of use. KEEP
HANDS AWAY WHILE IN OPERATION AND USE CAUTION IF THE
MACHINE HAS BEEN RUNNING RECENPPY.

WARNING........

ANY MODIFICATIONS TO EITHER THE ELECTRICAL
CIRCUITRY OR THE MECHANICAL ASSEMBLIES OF THE MACHINERY
WILL VOID ANY WARRANTIES ASSOCIATED WITH THIS
EQUIPMENT. Such modifications may introduce hazards that
would not otherwise be associated with this machinery. Sealer
Sales will not be responsible for any consequences resulting
from such unauthorized modifications.

WARNING........

The use of certain types of plastic films in sealing and/or
shrinking equipment may result in the release of HAZARDOUS FUMES
due to the degradation of the film at high temperatures. Before
using any plastic film in this equipment, the manufacturer or supplier
of the film should be contacted for specific information concerning
the potential release of hazardous fumes. ADEQUATE VENTILATION
MUST BE PROVIDED AT ALL TIMES.

WARNINGS

Sealer Sales Page 16

SS-1622MK-Combo Service

Manual

WARNING........

It is important that the machine operator turn off the
Main Power Switch when he/she has finished operating the unit.

WARNINGS

Sealer Sales Page 17

SS-1622MK-Combo Service Manual

DESCRIPTION AND SPECIFICATIONS OF

SS- 1622MK-COMBO

DESCRIPTION

The purpose of a SS-1622MK-COMBO is for medium to
high volume packaging requiring excellent seals and minimal
maintenance. It features “micro knife technology” for sealing of
films. This model incorporates an electromagnetic hold-down
system, allowing the operator to load another package while the
preceding package is being sealed. In addition, a package take­away conveyor increases production speed by automatically
discharging product into the tunnel.

SPECIFICATIONS

Model:
Seal Area:

Machine Size:

Volts:
Phase:
Amperage:
Weight:

SS-1622MK­COMBO Width:

16” Length: 22”
Length: 103”
Width: 32”
Height: 62”

220
1
45
800 lbs.

DESCRIPTION AND SPECIFICATIONS

Sealer Sales Page 18

SS-1622MK-Combo Service

Manual

INSTALLATION AND BASIC SET-UP

IMPORTANT

Read this manual carefully, and make it available to
everyone connected with the supervision, maintenance, or production
of this machine. Additional copies are available at your request.
(Contact your distributor for this information.) Be very careful when
operating, adjusting, or servicing this equipment. If in doubt, stop
and obtain qualified help before proceeding.

INSTALLATION OF SS-1622MK-COMBO

Place the machine in the desired location with the
required electrical power source available. (See power
requirements.) Make certain that proper electrical wiring is provided
to guard against low voltage. If the voltage is too low, the
equipment will not function properly.

Finding the proper location is a most important function
of the initial set-up. One must take several factors into
consideration:

1. Adequate power source.

2. Relationship to source of product.

3. Relationship to machine.

4. Relationship to any conveyors necessary to remove
finished product.

5. Convenience of operator.

An electrician should install a plug on the end of the main
power cord. If there is any doubt, get qualified assistance to do the
initial installation. Do not take any chances!

INSTALLATION

Sealer Sales Page 19

SS-1622MK-Combo Service Manual

Do not attempt to install, adjust, or operate this machine
without first reading the contents of this manual. Although the
design of the equipment incorporates safeguards to protect operating
and maintenance personnel, care should be used in operating,
adjusting, and servicing.

INSTALLING FILM RACK

IMPORTANT: Remove film rack from under machine

and install at the end of the sealer on the right hand side with the
four bolts and center knob provided. Mounting holes are slotted for
adjustment, set film rack flush with backside of the machine frame.

INSTALLATION

Sealer Sales Page 20

SS-1622MK-Combo Service Manual

MOUNTING FILM

Select the proper width of centerfold film for the item being
packaged, allowing for width and height of package. With the
package properly positioned within the film in the sealing area, allow
sufficient film to overlap the sealing bars so that a seal may readily
be made without any possibility of open areas due to insufficient film.

Place film roll on cradle mount film rack. The centerfold is to
be placed away from the operator, toward the rear of the machine.
Position film roll on rack and tighten film guide nuts to hold film roll
in position.

Thread film through the Pin Perforator. Note that the
perforator wheel turns freely and is not binding.

INSTALLATION

Sealer Sales Page 21

SS-1622MK-Combo Service Manual

Once threaded, separate film top from bottom and insert
product tray between. Make sure that the centerfold of film is placed
at the rear of the product tray. This allows the operator to insert
product between the layers of film on the product tray and to
prepare to move product and film into the sealing area. When
threading film, make sure to pull more than sufficient film through
the rollers, across the product tray, and into the sealing area to
ensure sufficient film to begin operation.

Place product against rear of film separator tray. Then move
product into seal area. Be sure to leave the bag loose around the
product when making the seal. This helps eliminate the seals from
blowing out in the shrink tunnel. This completes threading and/or
mounting film.

PIN PERFORATOR

Located between the lower idler rollers, the pin perforator
creates holes for air escape as the operator pulls on the film. This
allows the air to escape as the package travels through the tunnel.

The pin perforator is adjustable and must be properly placed in
conjunction with the width of the desired package. The positioning
should always be re-evaluated when setting the machine for different

INSTALLATION

Sealer Sales Page 22

SS-1622MK-Combo Service Manual

size product or different size film. Adjustments may be made with
the adjustment knob attached to the bottom of the film rack.

FILM BRAKE

The film brake is located on the operator side of the film cradle.
It serves to create tension on the dispensing film, in order to prevent
over-run and/or slack. From time to time, the operator should re­evaluate its setting to ensure proper tension.

PRODUCT TRAY

The product tray is an adjustable metal platform used to
separate film and to insert product between top and bottom layers of
film.

INSTALLATION

Sealer Sales Page 23

SS-1622MK-Combo Service Manual

The tray is adjustable to achieve proper depth, equal to the
depth of the package, allowing product to be placed exactly in the
centerfold of the film each time. A locking wing screw allows you to
set tray position.

LOCKING WING SCREW

Once the product is placed in the desired location, tighten the
wing screw under the loading tray to lock tray in position.

Power Discharge Conveyor

.

Lower Power Discharge Conveyor using the crank wheel located
underneath the Power Discharge Conveyor. The Conveyor should be
set so the package height is centered to the seal pad. In essence, ½

INSTALLATION

Sealer Sales Page 24

SS-1622MK-Combo Service Manual

of the package is above the seal pad and the other ½ of the package
is below the seal pad. This will place the seal in the center of your
package and help release any film tension that may occur.

Loosen knob under L’Sealer, this will allow you to move L-Bar
Sealer portion of machine to center product transferring from

powered conveyor into tunnel.

Move L-Bar Sealer portion of machine forward or
backward depending on your product size. This will allow your
product to transfer from L-Bar Sealer into the center of the
tunnel giving you optimum shrink quality. Tighten knob when
set.

INSTALLATION

Sealer Sales Page 25

SS-1622MK-Combo Service

Manual

Adjust crank handle on tunnel to move tunnel up or down
allowing you to center tunnel height with the height of the discharge
conveyor on sealer.

Always try to set tunnel height the same as L-Bar Sealer
discharge conveyor height for smooth product transfer.

INSTALLATION

Sealer Sales Page 26

Compensator

Screw

SS-1622MK-Combo Service Manual

COMPENSATOR ADJUSTMENT

Because of the importance of the adjustment of the Band
Ribbon compensator to the successful operation of the sealer, the
following explanation of its operation is given.

The front stainless steel compensator is used to adjust the
Band Ribbon temperature. As the seal head is lowered against the
bottom seal pad, a pulse switch is activated at the rear of the seal
bar supplying voltage to heat the Band Ribbon. As the Band Ribbon
heats up, the stainless steel compensator is spring-loaded and
expands as the Band continues to heat. When the compensator
finally expands to the point that it touches the threaded screw, the
circuit is completed and the supply voltage is turned off. The simple
principle of this device is to compensate for the residual heat
that builds up in the Band Ribbon. As you operate the L-Bar Sealer
faster and faster, the actual amount of heat from the Band
Ribbon stays constant, reducing the amount of heat transferred to
the PTFE tape or seal sponge.

NOTE: The farther away you set the threaded compensator screw
from the compensator, the hotter the Band Ribbon will become. A

good starting point is to allow a gap of ¼”. Thicker film such as

100GA Polyolefilm might require a slightly larger gap.

INSTALLATION

Sealer Sales Page 27

Rollers

FILM

Pin Perf.

CF Shrink Film

B-Wind

SS-1622MK-Combo Service

Manual

FILM THREADING DIAGRAM

FILM THREADING DIAGRAM

Sealer Sales Page 28

SS-1622MK-Combo Service Manual

SEQUENCE OF OPERATION

A. Turn on main power switch on backside of shrink tunnel, then

turn on power switch to L-Bar Sealer located under product

loading tray.

B. Product is placed on the product-loading tray.

C. The product tray functions as a means to separate the film,

allowing placement of product between upper and lower

portions of the film.

D. Move product into seal head area by pushing the product to the

left.

E. As the seal head is lowered toward the bottom seal pad, the

cycle switch is activated which initiates the “micro knife” Band

Ribbon, magnet time and conveyor time. The timers are

located in the front of the machine and can be adjusted from 0

to 6 seconds.

F. Take-away Conveyor Unit - Once the seal is completed, the seal

head automatically releases and the take-away conveyor begins

to run. It is adjustable from one(1) to six (6) seconds. The

timer is located on the front of the machine.

NOTE: If too much tension is on the film while the bag is

being made, the seals will, more than likely, be

weak or will “blow out” in the seal area while

passing through the shrink tunnel. Make sure to
relax the film tension prior to sealing.

G. Adjust discharge conveyor timer long enough to move product

from L-Bar Sealer into shrink tunnel.

SEQUENCE OF OPERATION

Sealer Sales Page 29

SS-1622MK-Combo Service Manual

SEQUENCE OF OPERATION

1. After setting the Band Ribbon compensator for the film type in

use (see page 27 for instructions), proceed as follows:

A. With film threaded, (see instructions for mounting film)

place right hand on package and slide product into the
upper left hand corner of the film (i.e. corner formed by
folded rear edge of film and previously sealed left edge of

film), pushing the package up against the ½” high

package stop at rear of product loading tray.

B. Place right hand under top sheet of film and on front

right corner of product. Place left hand on tail of both

SEQUENCE OF OPERATION

Sealer Sales Page 30

SS-1622MK-Combo Service Manual

sheets of film. Now push the package with right hand
and pull the film with left hand moving package and film
into lower right corner of seal area. Allow from ½” to 1”
of extra film around package. This will allow some slack
film between the package and the sealing bars, reducing
film tension.

C. Press sealing handle down. IMMEDIATELY release

pressure. The sealing head will remain down for the
duration of the time set on the seal timer.

D. The operator may then load the next package onto the

product tray, thus speeding up the sealing operation.

SEQUENCE OF OPERATION

Sealer Sales Page 31

SS-1622MK-Combo Service

Manual

E. Power discharge conveyor will discharge package into

shrink tunnel.

The next section will explain your tunnel functions and controls.

SEQUENCE OF OPERATION

Sealer Sales Page 32

34512

SS-1622MK-Combo Service Manual

Front Panel Diagram

APPLICABLE FOR ALL PP TUNNELS

1. Start Switch -- Green

2. Heater Switch -- White

3. Conveyor Speed Control – Small Black Knob

4. Digital Temperature Control

5. Air Velocity Control – Large Black Knob

FRONT PANEL DIAGRAM

Sealer Sales Page 36

SS-1622MK-COMBO Service Manual

SEQUENCE OF OPERATION

A. Turn the tunnel on by flipping the main breaker switch to the

ON position at rear of the machine.

TEMPERATURE CONTROL ADJUSTMENT

Sealer Sales Page 37

34512

SS-1622MK-COMBO Service Manual

SEQUENCE OF OPERATION

A. Turn the START switch (1) to the on position to start the

machine. (Temperature will be displayed on temperature

control at this time. This will also start the cooling fan motor.)

B. Turn the HEATER switch (2) the on position, this will start

the blower, conveyor motors and heater.

C. Set the Conveyor Speed Control (3) to about mid-range

until the exact desired conveyor speed is determined later

(based on package size and sealer speed). Factory setting is 4.

D. Set the Temperature Controller (4) at the temperature you

believe will shrink your product. This temperature may need to

be adjusted higher or lower until you have achieved the shrink

you are happy with for that product. As long as you are

TEMPERATURE CONTROL ADJUSTMENT

Sealer Sales Page 38

SS-1622MK-COMBO Service Manual

running the same product, this temperature should not have to

be adjusted again. Factory setting is 290 degrees.

SEQUENCE OF OPERATION

E. Turn Air Velocity Control knob (5) to high. Most tunnel

applications will use high air velocity. You may lower the Air

Velocity for (a) lightweight packages that may lift or float from

excess air pressure or (b) should you want to decrease the

shrink force of the film. Factory setting is high.

F. CAUTION: When turning off the tunnel, be sure to turn

off by means of the heater bank switch. The tunnel will

automatically shut off at about 180 degrees.

(Temperature will be displayed on temperature controller at

this time.) Turn off the start switch and then the main breaker

located in the back of the tunnel.

TEMPERATURE CONTROL ADJUSTMENT

Sealer Sales Page 39

SS-1622MK-COMBO Service Manual

Temperature Control Adjustment

PV = Present Value
SV = Set Value

On the above temperature controller the set value is 300
degrees and its present temperature is at 298 degrees.

To Adjust Temperature Up or Down:

First you must press the arrow key that points left (). When
pressing this key the set value temperature will flash first in the ones
column. While flashing, you may adjust temperature by now
pressing the arrow keys either up or down () to the desired
temperature in the ones column. Repeat this procedure by pressing
the left arrow () to move flashing light to the tens column or the
hundreds column and adjust up or down to desired temperature.
Once you have adjusted to desired temperature press the set key
and the temperature will now become your new set value (SV).

TEMPERATURE CONTROL ADJUSTMENT

Sealer Sales Page 40

SS-1622MK-COMBO Service Manual

TROUBLESHOOTING – L-Bar Sealer PORTION

The following guidelines are provided to aid in determining the
source of any operation difficulties which may develop. In
performing the tests and checks which follow, carefully inspect for
any loose components, broken or loose wires, poor electrical
connections, etc., while testing the various switches, controls, relays,
transformers, etc. For checking electrical problems, use a voltage
meter.

Note: While troubleshooting use caution to avoid danger of

electrical shock. When power is not required for
checking for the presence or value of voltages used,
always have it disconnected.

DISCONNECT ALL POWER BEFORE MAKING ANY REPAIRS.

REFER TO ELECTRICAL BOARD LAYOUT AND ELECTRICAL

SCHEMATIC FOR LOCATION OF ELECTRICAL COMPONENTS

NO HEAT TO BAND RIBBON

1. Check that the sealer is plugged in and that power is present at

the socket. Make sure the power switch is in the ON position.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 41

SS-1622MK-COMBO Service Manual

2. Make sure timer is not set on zero (0) on time dial.

3. Check micro knife pulse switch adjustment.

(a) Make sure switch is being activated when the seal bar is

within ¼” of contact with seal pad.

(b) Press switch by hand. If no click is heard, replace switch.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 42

F6 – 2 AMP

F5 – 3 AMP

F4 – 2 AMP

F3 – 15 AMP

F1 – L1 --15AMP

F2 – L2 -- 15 AMP

SS-1622MK-COMBO Service Manual

4. Check all fuses.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 43

GAP 1/8” to 1/4”

SS-1622MK-COMBO Service Manual

5. Check micro knife compensator setting. You should always have

a gap of at least 1/8” to 1/4” between the compensator and the

adjustment screw. If the compensator screw is touching the
compensator the micro knife will not heat up.

6. Check to see if CR1 contactor is pulled in at all times when Main

Switch is in the ON position.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 44

Wire 10

Wire 8

Wire 7

Wire 9

SS-1622MK-COMBO Service Manual

7. Check for operation of contactor – CR2.

(a) Check for 220 power on wires 7 and 8. When CR2 is

pulled in, you should have 220 present on wires 9 and 10.

(b) Manually engage contactor and check for continuity on

each leg. If required, clean or replace contact points or
replace contactor.

8. Check for voltage present at both primary and secondary of

transformer T2 as per values shown in the voltage specifications.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 45

RL2

SS-1622MK-COMBO Service Manual

9. Check for broken band ribbon inside or outside the corner block.

10. Check RL2 relay to make sure it is secure in the socket.

TROUBLESHOOTING – NO HEAT TO BAND RIBBON

Sealer Sales Page 46

SS-1622MK-COMBO Service Manual

UNBALANCED HEAT FROM FRONT
AND SIDE MICRO KNIFE BAND RIBBON

1. Check corner block, make sure PTFE insulation piece covering

micro knife band ribbon described on page 70 is securely in

place. If PTFE insulation is missing or worn out the

band ribbon will ground against corner block not

allowing heat to transfer in the corner.

TROUBLESHOOTING—WEAK SEALS AND/OR POOR FILM CUT-OFF

Sealer Sales Page 47

Check Wires 14 and 26

Check Wires 12 and 13

SS-1622MK-COMBO Service Manual

2. Check for poor connection in corner block.

TROUBLESHOOTING—WEAK SEALS AND/OR POOR FILM CUT-OFF

Sealer Sales Page 48

SS-1622MK-COMBO Service Manual

WEAK SEALS AND/OR POOR FILM CUT-OFF

.

1. Improper setting of micro knife compensator. Refer to page 26

for proper adjustment.

2. Improper operating technique. Too much film tension, make

sure film is relaxed prior to sealing.

3. Check band ribbon to see if cleaning or replacement is

necessary.

TROUBLESHOOTING—WEAK SEALS AND/OR POOR FILM CUT-OFF

Sealer Sales Page 49

SS-1622MK-COMBO Service Manual

4. Burned PTFE tapes 1/2” or 3/4” replace. If PTFE tapes

become burned or worn, weak seal may occur. See page 73

for Replacement Instructions.

5. Wavy silicone rubber sealing pad. Replace. (See instructions

on page 74.)

6. Seal pad pressure incorrect. (See page 75.)

7. Hold-down pressure uneven or incorrect on magnets. (See

page 78 for instructions.)

8. When seal bar is lowered, the gap between the lower magnet

and the upper magnet clamp should be 1/8”.

TROUBLESHOOTING—WEAK SEALS AND/OR POOR FILM CUT-OFF

Sealer Sales Page 50

F6 – 2 AMP

F5 – 3 AMP

F4 – 2 AMP

F3 – 15 AMP
Not set at zero.

SS-1622MK-COMBO Service Manual

CONVEYOR – WILL NOT RUN

1. Check conveyor timer. Make sure it is not set at zero.

2. Check fuse F-6, 2 AMP, wire 18 and 19.

TROUBLESHOOTING –CONVEYOR WILL NOT RUN

Sealer Sales Page 51

Drive Roller Adjustment Screw

SS-1622MK-COMBO Service Manual

3. Check conveyor belt and make sure it is not adjusted too

tightly. Adjust conveyor belt using Drive Roller Adjustment

Screw.

4. Check that conveyor motor sprocket set screws are not loose

on shaft.

5. Check that conveyor chain is not jammed or broken.

6. Make sure wires number 19, 20 and 7 are connected to the

conveyor motor.

TROUBLESHOOTING –CONVEYOR WILL NOT RUN

Sealer Sales Page 52

SS-1622MK-COMBO Service Manual

7. Make sure wires number 20 and 7 are connected to C1

capacitor.

8. Make sure RL1, 220V relay is secure in relay socket and points

are not burnt.

TROUBLESHOOTING –CONVEYOR WILL NOT RUN

Sealer Sales Page 53

Dual Magnets

F6 – 2 AMP

F5 – 3 AMP

F4 – 2 AMP

F3 – 15 AMP

Sealing Time

Not at Zero

SS-1622MK-COMBO Service Manual

MAGNETIC HOLD DOWN

1. Seal head will not stay down – sealer operates normally

otherwise.

2. Check seal timer (TR2) setting. Make sure it is not set at zero.

Also, check to see if burned or damaged.

TROUBLESHOOTING –MAGNETIC HOLD DOWN

Sealer Sales Page 54

Wires 27

Wires 28

SS-1622MK-COMBO Service Manual

3. Check fuse F5, 3AMP, wire 27 and 29.

4. Check for 220 Volts (nominal) to primary of transformer (T1).

5. If voltage is present to primary winding of transformer (T1),

check for 24 (nominal) volts output from secondary of

transformer.

6. Check for 24 (nominal) volts DC output from + (positive) and –

(negative) wires number 27 and 28 on terminals of rectifier. If

no DC voltage, replace rectifier.

TROUBLESHOOTING –MAGNETIC HOLD DOWN

Sealer Sales Page 55

Wire 28

Wire 29

SS-1622MK-COMBO Service Manual

7. Check for circuit continuity through windings of hold-down

magnets. Check on terminal strip wires 28 and 29.

Disconnect from terminal strip before testing.

TROUBLESHOOTING –MAGNETIC HOLD DOWN

Sealer Sales Page 56

Film brake.

SS-1622MK-COMBO Service Manual

EXCESSIVE FILM DRAG

1. Check for proper film threading. (See diagram on page 23.)

2. Loosen film roll brake.

3. Make sure film guide rolls are not restraining roll from turning

freely.

TROUBLESHOOTING –EXCESSIVE FILM DRAG

Sealer Sales Page 57

Film brake.

SS-1622MK-COMBO Service Manual

EXCESSIVE FILM WINDING OR “SPILL”

1. Tighten film roll brake.

TROUBLESHOOTING—EXCESSIVE FILM WINDING

Sealer Sales Page 58

Wires 6 and 10

F1 – 10 AMP

F2 -- .5 AMP

F3 -- .5 AMP

F4 – .5 AMP

SS-1622MK-COMBO Service Manual

CONVEYOR MALFUNCTION

1. Check main power at machine’s main breaker.

2. Open main panel. Check conveyor motor fuse (F-3/.5 Amp) wires

No.6 and 10. If bad, replace.

TROUBLESHOOTING—CONVEYOR MALFUNCTION

Sealer Sales Page 59

Wires 7 and 16

Wires 18 and 17

Wire 7 Black

Wire 7 White

Wire 23

SS-1622MK-COMBO Service Manual

Conveyor malfunction (continued)

3. Check Motor Capacitor 1.5 mf. Make sure wires #7 (black) #7

(white) and 23 are connected to Capacitor. Check to see if
Capacitor is burned.

4. Check incoming power on AC Control Board 220 volt, Wires 7 and

16 (Pins 8 and 10). If no power present replace AC board.
(a) Check to make sure AC Board is not burned or damaged.
(b) If power is present at both locations 7 and 16 and motor

does not operate, replace conveyor motor.

TROUBLESHOOTING—CONVEYOR MALFUNCTION

Sealer Sales Page 60

End covers

SS-1622MK-COMBO Service Manual

Conveyor malfunction (continued)

5. Remove end covers and look for obstructed product or lodged

rollers.
(a) Check lubrication of conveyor chains.

6. Make sure the connection wire on the motor and cable are not

loose.
(a) Refer to electrical schematic on page 98 for proper wiring

of the motor.

(b) Check wires 7 and 16 for power. If power present and

motor does not operate, replace motor.

TROUBLESHOOTING—CONVEYOR MALFUNCTION

Sealer Sales Page 61

Air velocity knob

SS-1622MK-COMBO Service Manual

Conveyor malfunction (continued)

7. Check to make sure the chain is not loose and the sprockets are

not touching the frame.
(a) Replace the motor if all the above checks properly. See

Maintenance, page 96.

NO AIR FLOW

1. Make sure air velocity knob is not on low.

TROUBLESHOOTING—NO AIR FLOW

Sealer Sales Page 62

F1 – 10 AMP

F2 – .5 AMP

F3 – .5 AMP

F4 – .5 AMP

SS-1622MK-COMBO Service Manual

NO AIR FLOW (continued)

2. Open main electrical panel. Check Blower Motor fuse F-1 (10

amp).

3. Test fuses F1, F2, F3 and F4.

4. Check to make sure no air holes are obstructed due to plastic

build up covering air holes.

TROUBLESHOOTING—NO AIR FLOW

Sealer Sales Page 63

SS-1622MK-COMBO Service Manual

NO AIR FLOW (continued)

5. Check main blower motor and replace if necessary.

(a) Check motor start capacitor to see if burned.

(b) Check motor wires 7 and 10 for loose connection.

(c) Check for 220 volt power across wires 7 and 10 (motor

wires). If voltage is present and the motor still does not
operate, replace motor.

6. Check to make sure blower wheel is not loose on the blower

motor shaft.

TROUBLESHOOTING—NO AIR FLOW

Sealer Sales Page 64

Terminals 13 & 14

Wire 24

Wire 7

-14

+13

SS-1622MK-COMBO Service Manual

NO HEAT

1. Check thermocouple wires at temperature controller

(Terminals +13 and -14). First, disconnect, then check with

meter for continuity across the two thermocouple wires.

(a) If no continuity is present across thermocouple wires,

replace thermocouple.

(b) Check terminals at 7 and 1 (wires 7 and 24) for 220 Volt

power on temperature controller when CR2 is pulled in
under set temperature.

(c) Check for 220 volt present with heater switch in on

position. If no power is present, check Fuse F4, .5 AMP.
If voltage present at wires 7 and 24 and Fuse F4 is good,
replace Temperature Control.

2. Please note: Before replacing the Temperature Control,

check the TS1 (TS1 NO open; thermo overload for

blower motor) and TS2 (TS2 NC closed; heat cool down

sensor) for continuity with the lead wires disconnected

from sensor.

Note: When any of the sensors are not functioning properly,

this causes the temperature controller to malfunction.

TROUBLESHOOTING—NO HEAT

Sealer Sales Page 65

Wires 2 & 3

CR1

SS-1622MK-COMBO Service Manual

NO HEAT (continued)

(a) Check for 220 volt on wires 8 and 9 on CR2 with CR2

contactor pulled in under set temperature. If voltage is
present on CR2 contactor on wires 8 and 9, check the
Heat Bank for broken lugs or wire inside the Heater Bank.
If leads and jumper wires on Heater Bank are not broken
or burned, then replace the Heater Bank.

(b) Check Heater Bank for replacement. Make sure no lugs

on the Heater Bank have been broken.

TROUBLESHOOTING—NO HEAT

Sealer Sales Page 66

SS-1622MK-COMBO Service Manual

NO HEAT (continued)

3. Check the heater bank to make sure the wires are not loose or

broken on the heater bank. Pull the heater bank and make

sure the heater bank has continuity across wires. If not,

replace it.

4. If no control over heat, interchange thermocouple wires at

temperature controller. If still no control, check for

replacement of CR2 or temperature control.

TROUBLESHOOTING—NO HEAT

Sealer Sales Page 67

SS-1622MK-COMBO Service Manual

MAINTENANCE – L-Bar Sealer PORTION OF MACHINE

MICRO KNIFE BAND RIBBON COMPENSATOR ADJUSTMENT

Adjustment of the band ribbon compensator may be required
under the following conditions:

1. During continuous use. After about 15 minutes of sealer
operation, check seal quality and, if required, reset
compensator. This may be necessary as a result of heat
buildup in the sealing head, or stretching of band ribbon.

2. After installing new Band Ribbon, make sure the Band
Ribbon lies properly over the entire length of the seal bar
in the channel.

3. If charring of film is noted, there is too much heat.

4. If sealing is incomplete, there is not enough heat.

To adjust the band ribbon compensator, refer to the

adjustment instructions on the following pages:

MAINTENANCE – BAND RIBBON ADJUSTMENT

Sealer Sales Page 68

SS-1622MK-COMBO Service Manual

All Films Except Polyethylene

Adjust the band ribbon compensator (located at the left end of
the front seal bar) by loosening the wing nut and turning the
knurled-head screw until a 1/4” air gap exists. With folded film (i.e.
two layers of film) in the sealing position, bring down the sealing
head. Set the seal timer for a 1/2 to 2 setting then examine the seal.
Experimentally, in small increments, increase the band ribbon
compensator air gap setting until a setting is obtained which yields a
satisfactory seal and film cut off. It is important to remember that
the smallest air gap at which a satisfactory seal and film cut off is
obtained is the correct setting. If using PVC film we recommend
using silicone bottom seal sponge.

MAINTENANCE – BAND RIBBON ADJUSTMENT

Sealer Sales Page 69

SS-1622MK-COMBO Service Manual

Polyethylene Films

On the band ribbon compensator, loosen the wing nut and turn
the knurled-head screw until a 1/4” air gap exists. Tighten the wing
nut. With folded film (e.g., two layers of film) in the sealing position,
bring down the sealing head. Set the seal timer to position 1 or 2 on
the timer dial setting.

Ordinarily, it will not be possible to obtain a satisfactory seal
with the 1/4” gap setting. Experimentally, in small increments,
increase the band ribbon compensator air gap setting until a setting
is obtained which yields a satisfactory seal and film cut off.

MAINTENANCE – BAND RIBBON ADJUSTMENT

Sealer Sales Page 70

SS-1622MK-COMBO Service Manual

BAND RIBBON REPLACEMENT

The band ribbon is subject to constant wear and will
require replacement as PTFE coating eventually wears off. To
replace band ribbon, proceed as described below.

Replacing Micro Knife Band Ribbon

1. Loosen Allen screw on backside of compensator to loosen band

ribbon.

2. Using a 2mm Allen wrench, loosen corner screw.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 71

Holding Screw

SS-1622MK-COMBO Service Manual

3. Loosen screw holding Band Ribbon in place on front seal bar.

4. Loosen screw on back side of “side” seal bar compensator.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 72

SS-1622MK-COMBO Service Manual

Note: Once screw is loosened spring loaded compensator will

expand.

5. Remove old micro knife.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 73

SS-1622MK-COMBO Service Manual

6. Take new micro knife band ribbon and bend corner

approximately 90 degrees.

7. Cut a piece of 3 mill PTFE tape and wrap around band ribbon

before inserting into corner-block of seal bar.

8. Push band ribbon into corner block until it is fully seated at

bottom of channel. Cut off excess PTFE tape to insure good

corner seal.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 74

SS-1622MK-COMBO Service Manual

9. Insert band ribbon into remaining length of channel.

10. Push spring loaded compensator forward and tighten lock

screw.

11. Cut off excess length of band ribbon.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 75

SS-1622MK-COMBO Service Manual

Important:

After replacing Band Ribbon, be sure to adjust

the setting of the element compensator. See
page 26 for instruction.

MAINTENANCE – BAND RIBBON REPLACEMENT

Sealer Sales Page 76

SS-1622MK-COMBO Service Manual

TAPE REPLACEMENT

The item most subject to wear on the sealer is the PTFE tape
used to cover the silicone sponge rubber on the sealing bar.
This ¾” x 10 mill tape should never be permitted to burn
through. To replace tape, proceed as follows:

1. Strip off old tape.

2. Cut off proper length of new PTFE, peel off backing, and
press new tape into position.

3. Apply ½” x 10 mill PTFE tape over the top of the ¾”
PTFE tape.

MAINTENANCE -TAPE REPLACEMENT

Sealer Sales Page 77

SS-1622MK-COMBO Service Manual

SILICONE RUBBER SEALING PAD REPLACEMENT

Occasionally it will be necessary to replace the silicone rubber

sealing pads. This should be done if the following is noted:

 Gaps in the seal
 Weak seals
 Improper film cut-off
 Excessive sealing pressure required

To replace rubber, proceed as follows:

1. Seal pads are designed with a channel for easy
replacement. Pull silicone rubber out of the channel.

2. Replace with new silicone rubber. Press rubber back into
channel.

3. Install 3/4” - 10 mil PTFE tape on top of rubber.

4. Install 1/2” - 10 mil PTFE tape over the 3/4” tape.

MAINTENANCE–SEALING PAD REPLACEMENT

Sealer Sales Page 78

SS-1622MK-COMBO Service Manual

Sealing Pad Pressure Adjustment for Head Return Cylinder

Uniform pressure between the sealing elements and the sealing
pads must always be maintained for proper sealing uniformity, and to
prevent element hot spots and premature burnout. This adjustment
should be checked periodically and should always be checked when
sealing gaps occur. Proceed as follows:

1. Loosen all five bolts on lower pads just enough to
maintain a moderate sliding pressure.

2. With sealing head resting on lower pads, make sure there
are no air gaps, then tighten the five bolts on the lower
pad.

3. Adjust magnets (see page 78 for magnet adjustment).

MAINTENANCE –SEALING PAD PRESSURE ADJUSTMENT

Sealer Sales Page 79

Set Screws

Assembly Casting

SS-1622MK-COMBO Service Manual

Adjust Height of Seal Bar

4. To raise or lower seal bar height, adjust seal head
cylinder assembly casting by loosening the three set
screws on shaft. Move assembly casting forward or
backward, then reset seal head by locking set screws.

5. Cycling head up and down, adjust set screw for proper
head speed and cushion.

MAINTENANCE –ADJUST HEIGHT OF SEAL BAR

Sealer Sales Page 80

SS-1622MK-COMBO Service Manual

Band Ribbon Pulse Switch Adjustment

The sealing cycle should not begin until the sealing head is

within 1/4” or less of the film to be sealed. If the magnets energize

before the head is within 1/4” of the film, loosen the lock-nut and
turn the screw (located at the rear end of the side seal bar) up
slightly (counterclockwise when viewed from above). The correct
adjustment has been obtained when the magnets energize just as
the seal bar comes into contact with lower pads.

MAINTENANCE –PULSE SWITCH ADJUSTMENT

Sealer Sales Page 81

SS-1622MK-COMBO Service Manual

Adjustment of Magnets for Correct Sealing Pressure

All magnets have been factory adjusted for equal sealing
pressure throughout the length of both the front and side seal bars.
However, if an adjustment is required, proceed as follows:

1. Disconnect the sealer’s power source.

2. Loosen the lower magnet bolts on all lower magnets so that the

magnets settle to their lowest position in the mounting slots.

3. Lower the sealer’s operating handle fully and lift lower magnets

to within 1/16” from the holders. Tighten the mounting bolts

securely to retain the proper adjustment.

MAINTENANCE –ADJUST MAGNET SEAL PRESSURE

Sealer Sales Page 82

Conveyor

Adjustment

Screws

Bearing Block

Bolts

SS-1622MK-COMBO Service Manual

Conveyor

From time to time, it will be necessary to disassemble the
conveyor as it will need adjustments or replacement of worn parts
and general maintenance. The following information is given to
assist the operator in that general fashion. If the problem does not
rectify itself with this general explanation, discuss it with
an authorized distributor of Equipment or
with Sealer Sales directly.

A. Adjust Discharge Conveyor Belt by loosening the Bearing Block

Mounting Bolts, then adjust the Conveyor Adjustment Screw in

to loosen belt, or out to tighten belt.

MAINTENANCE –CONVEYOR

Sealer Sales Page 83

SS-1622MK-COMBO Service Manual

Replacing Conveyor Motor

1. Disconnect power plug from source of power.

2. Disconnect the three power wires from the rear of the motor.

3. Loosen the four bolts that hold the motor mount bracket to the

conveyor and slide motor mount forward.

4. Loosen set screws on sprocket that are attached to the motor

and remove sprocket.

5. Remove four bolts. These bolts hold the motor in place. Hold

motor while removing these bolts so the motor does not drop.

6. Follow steps 2-5 above in the opposite order to reinstall new

motor against the conveyor frame and tighten set screws.

MAINTENANCE –CONVEYOR MOTOR REPLACEMENT

Sealer Sales Page 84

Wire #12

Wire #14

SS-1622MK-COMBO Service Manual

Replacing Front and Side Seal Bars

1. Turn power switch to off position.

2. Remove wire #12 from side bar compensator.

3. Remove wire #14 from front bar compensator.

4. Remove wire #26 from temperature control bracket.

MAINTENANCE –REPLACING SEAL BARS

Sealer Sales Page 85

Compensator Guide

Screw

SS-1622MK-COMBO Service Manual

5. Remove temperature control bracket.

NOTE: Bracket is held in place with two screws. Also, do not

lose the insulators.

6. Compress front bar compensator all the way in using your

thumb and hold. Loosen Allen screw on compensator holding

Band Ribbon.

Warning: Remove compensator slowly, applying tension, as

compensator is spring loaded.

7. Remove compensator guide screw.

MAINTENANCE –REPLACING SEAL BARS

Sealer Sales Page 86

Allen Bolt

Remove Allen Bolts

SS-1622MK-COMBO Service Manual

8. Remove Allen Bolt holding front seal bar to the outfeed bar.

9. Remove bolts holding side seal bars to casting.

10. Remove seal head from entrance casting and outfeed bar.

11. Remove the side bar compensator following steps 6 and 7.

MAINTENANCE –REPLACING SEAL BARS

Sealer Sales Page 87

SS-1622MK-COMBO Service Manual

12. Remove upper magnet holder on side bar.

13. Remove handle.

MAINTENANCE –REPLACING SEAL BARS

Sealer Sales Page 88

Channel Holding Screw

SS-1622MK-COMBO Service Manual

INSTALLATION OF TRANSITE CHANNELS

Front and Side Seal Bar

1. Install corner block.

2. Remove the Allen screws holding channels in seal bar.

MAINTENANCE – INSTALLING TRANSITE CHANNELS

Sealer Sales Page 89

SS-1622MK-COMBO Service Manual

3. Remove Allen screw.

4. Remove transite channel and replace.

MAINTENANCE – INSTALLING TRANSITE CHANNELS

Sealer Sales Page 90

Compensator Guide
Screw

Insulated Washer

SS-1622MK-COMBO Service Manual

Installation of Band Ribbon Compensators and Temperature
Control Bracket

1. Lightly grease two compensator springs and put on each seal

bar.

2. Insert compensator and compress in all the way.

3. Install compensator guide screw assemblies.

4. On the front bar, install the temperature adjustment bracket.

MAINTENANCE –INSTALLING COMPENSATOR

Sealer Sales Page 91

SS-1622MK-COMBO Service Manual

Important: The temperature adjusting bracket must be

insulated from the casting to work properly.

5. Install new band ribbon and reset temperature adjustment

screw assembly.

6. Reconnect wires to seal head assembly.

(a) On the side seal bar, connect wire #12 to compensator

block.

(b) Connect wire #13 to infeed casting.

(c) On the front bar, connect wire #14 to the compensator

block.

MAINTENANCE –INSTALLING COMPENSATOR

Sealer Sales Page 92

SS-1622MK-COMBO Service Manual

(d) On the temperature adjusting bracket wire #26.

7. Install upper magnet holder on side bar.

8. Install handle and tighten set screws on each end.

9. Double check all work done before starting the

machine.

MAINTENANCE –INSTALLING COMPENSATOR

Sealer Sales Page 93

SS-1622MK-COMBO Service Manual

MAINTENANCE – TUNNEL PORTION OF MACHINE

To aid in maintaining the high reliability of this shrink tunnel,
the following maintenance should be provided.

DISCONNECT ALL POWER BEFORE MAKING ANY REPAIRS.

IF UNSURE OF ANYTHING, CONTACT

A QUALIFIED SERVICE TECHNICIAN

A. The conveyor chains should be lubricated once a month with a

high temperature oil. The lubricant should be applied with a

brush or sprayed while the conveyor is slowly running.

B. The silicone covering on the tunnel rollers should be inspected

regularly to assure that no scrap pieces of film are wrapped

around the rollers to cause sticking of packages. To clean, run

conveyor until the affected rollers are within the heated

chamber, thus heating the film residue to soften the film, then

advance the conveyor to stop the rollers outside the heat

chamber for cleaning. Make sure the conveyor is stopped

before putting your hands or anything else in the conveyor

area. If necessary to remove the film residue, use a dull, blunt-

edged tool. Do not use any sharp instruments, as nicking the

silicone may result in having to replace the roller covering.

C. To replace silicone covering on the roller, proceed as follows:

MAINTENANCE

Sealer Sales Page 94

SS-1622MK-COMBO Service Manual

Replacement of Conveyor Rollers

D. Remove idler end caps.

E. Loosen the two take up bolts for the chain adjustment giving

yourself enough slack to pull chain upward and spread chain

apart to remove roller. See picture on page 92.

MAINTENANCE—REPLACE CONVEYOR ROLLERS

Sealer Sales Page 95

SS-1622MK-COMBO Service Manual

Now you are ready to move the rollers.

F. Remove old roller covering by very carefully slitting the

covering and pulling off.

G. Clean all rollers, using steel wool or a wire wheel. Make certain

all rollers are smooth and free of residue or burrs.

H. Fit the new silicone rubber tubing onto each roller and work on

by hand at least 1/2”. At the opposite end of the tubing, attach

and secure an air supply hose of low pressure, maximum

pressure 5 lbs. While the tubing is slightly expanded by the air

pressure, push the tubing onto the roller. Be very careful to

hold the roller at all times so it does not escape due to the air

pressure.

I. Replace rollers on conveyor by inserting roller end holes into

the extended pins on the chain

J. Check conveyor chain tension as described on page 93.

MAINTENANCE—REPLACE CONVEYOR ROLLERS

Sealer Sales Page 96

Roller at 3 o’clock position

SS-1622MK-COMBO Service Manual

K. The adjustment of package conveyor chain tension should be

checked occasionally to ensure that it is not excessive, as this

would cause unnecessary wear of the sprockets. To check or

adjust tension, shut off power to the tunnel. Remove idler end

caps. Adjust conveyor to these specifications. On the idler end

of the conveyor, bring a roller to the three o’clock position (the

center of the end of the conveyor). From that point count

seven roller in; the seventh roller should be evenly touching the

conveyor roller bottom rails.

MAINTENANCE—REPLACE CONVEYOR ROLLERS

Sealer Sales Page 97

SS-1622MK-COMBO Service Manual

L. Replacement of idler roller shaft, bearings, or

sprockets. Remove idler end caps to gain access to idler

shaft. Disconnect the conveyor chains by removing the master

links. Remove two bolts from the idler block holder and shaft

assembly should pull right out. Remove two tension bolts from

idler block holder, then the shaft and sprockets will come right

off. Replace and reassemble in the same manner as

disassembled.

MAINTENANCE—REPLACE IDLER SHAFT

Sealer Sales Page 98

SS-1622MK-COMBO Service Manual

M. Drive shaft, bearings, or sprockets replacement.

(1) Remove drive end caps instead of idler end caps.

(2) Disconnect the conveyor chain by removing the master

links.

(3) Remove two bolts from the flange bearings and remove

drive shaft assembly.

(4) The drive shaft has one sprocket pinned to it and must be

reinstalled the same way. The other sprocket and
bearings will slide right off the drive shaft. Replace and
reassemble.

MAINTENANCE—REPLACE DRIVE SHAFT

Sealer Sales Page 99

SS-1622MK-COMBO Service Manual

N. Conveyor motor replacement.

(1) Disconnect power to machine.

(2) Disconnect electrical wires from drive motor, and remove

four bolts that hold the drive motor.

(3) Remove sprocket from old motor and place on new drive

motor. Reassemble in the same manner it was
disassembled. For wire hook up refer to electrical
schematic on page 108.

MAINTENANCE—REPLACE CONVEYOR MOTOR

Sealer Sales Page 98

Access Cover

SS-1622MK-Combo Service Manual

O. Heater bank replacement.

(1) Shut off power to machine.

(2) Remove left side safety shield and panel.

(3) Remove access cover and pull insulation out.

MAINTENANCE—REPLACE HEATER BANK

Sealer Sales Page 99

SS-1622MK-Combo Service Manual

(4) With a 3/8” nut driver, remove wires on the heater bank. Set

wires off to side.
(a) Remove heater bank terminal box from the heater

bank.

(5) Then remove heater bank.

(6) Place the heater bank terminal box on the new heater bank.

Reassemble in the same manner it was disassembled.

MAINTENANCE—REPLACE HEATER BANK

Sealer Sales Page 100

Wires 7, 14 & 24

SS-1622MK-Combo Service Manual

P. Temperature controller replacement.

(1) Shut off power to machine.

(2) Open main panel door.

(3) Disconnect four wires (Two Nos. 7, 14 and 24) and

thermocouple wires from temperature controller.

(4) Loosen screws on side of controller itself and pull controller

out of the front of the panel. Replace with new controller.
Refer to electrical schematic for replacement of four wires
(Two Nos. 7, 14 and 24) and thermocouple wires.

WARNING: IF NO CONTROL OVER HEAT, INTERCHANGE

THERMOCOUPLE WIRES.

CAUTION! DO NOT EXCEED 500 DEGREES.

MAINTENANCE—REPLACE TEMPERATURE CONTROLLER

Sealer Sales Page 101

SS-1622MK-Combo Service Manual

Q. Blower Motor Replacement.

1. Shut off power to machine.

2. Remove top panel and 4 screws holding the blower chamber
cover.

3. Disconnect wires on the blower motor.

4. Remove four bolts at motor base.

MAINTENANCE—REPLACE BLOWER MOTOR