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SS-Series Shrink Tunnels
Model: ST-1808-44
Distributed By:
Version 1.0
Last Updated: 2/21/20
Sealer Sales | www.sealersales.com | Tel: 818-718-8818 | E-mail: contact@sealersales.com
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Copyright © 2019 by Stephanie Hwang
All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying,
recording, or other electronic or mechanical methods, without the prior written permission of the publisher, except in the case of brief quotations
embodied in critical reviews and certain other noncommercial uses permitted by copyright law. For permission requests, write to the publisher,
addressed “Attention: Permissions Coordinator,” at the address below.
Sealer Sales, Inc.
8820 Baird Avenue
Northridge, Ca 91324
www.sealersales.com
Printed in the United States of America
Sealer Sales | www.sealersales.com | Tel: 818-718-8818 | E-mail: contact@sealersales.com
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ST-1808-44 Tunnel 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.
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TABLE OF CONTENTS
___________________________________________________________
Preface
Unpacking 4-8
Warranty Notice 9
Warranty 10-11
Warranty Exceptions 12
Warnings 13-15
Tunnel Section
Description and Specifications 16
Installation and Basic Set-Up 17-18
Front Panel Diagram 19
Sequence of Operation 20-22
Temperature Control Adjustment 23
Troubleshooting 24-33
Troubleshooting–Conveyor Malfunction 25-28
Troubleshooting–No Air Flow 28-30
Troubleshooting–No Heat 31-33
Maintenance 34-49
Maintenance—Replace Conveyor Rollers 35-37
Maintenance—Replace Idler Shaft 38
Maintenance—Replace Drive Shaft 39
Maintenance—Replace Conveyor Motor 40
Maintenance—Replace Heater Bank 41-42
Maintenance—Replace Temperature Controller 43
Maintenance—Replace Blower Motor 44-46
Maintenance—Replace Wear Rails 47-49
Electrical Panel Diagram 50
Electrical Schematic 51
Parts List Nomenclature 52
Replacement Parts List 53-55
Spare Parts List 56
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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.
Do not throw away damaged pallets or box until
freight inspection has occurred.
UNPACKING
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Your new Tunnel comes bolted to a pallet and has a triwalled corrugated box strapped to the pallet to protect the tunnel.
If your machine does not arrive in this condition, write
on shipping paperwork that outside of box is
damaged. Concealed damage may have occurred.
UNPACKING
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UNPACKING
1. Cut the two steel straps holding corrugated box to pallet.
2. Remove tri-wall corrugated box from pallet.
UNPACKING
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UNPACKING
3. Remove plastic bag and stretch film that covers machine.
4. Unbolt tunnel from base of pallet using 13mm wrench.
5. Place forks of forklift under center of tunnel to lift off the pallet.
6. Place in desired location and use leveling bolts to match your
sealer height.
UNPACKING
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UNPACKING
7. Cut plastic strap from top and bottom of conveyor rollers
before attempting to operate conveyor.
UNPACKING
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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 equipment.
Please read this manual carefully and refer to it
for information on the care and use of your 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 equipment. The terms and conditions of this warranty
apply only to unmodified units. Any unauthorized
modifications to the equipment automatically voids
this warranty.
WARRANTY NOTICE
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Sealer Sales
WARRANTY
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' sole obligation and purchaser’s
sole remedy in the event of a warranty dispute shall be, at Sealer
Sales' 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
fitness for a particular purpose, non-infringement or any
other matter.
WARRANTY
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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 two-year warranty on
parts, excluding shipping or freight costs for
replacement parts. All warranty parts are shipped
F.O.B. Rancho Cucamonga, California. Service Labor to
install part is not covered under warranty!
WARRANTY
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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.
ST-1808-44 Tunnel Parts
1. Silicone Tubing (roller covers)
2. Tunnel Curtains
WARRANTY EXCEPTIONS
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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
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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 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 RECENTLY.
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
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WARNING........
It is important that the machine operator unplug the
machine when he/she has finished operating the unit.
WARNING........
Turn off machine and disconnect power cord from power
source before attempting to make any repairs or work on machine.
WARNINGS
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DESCRIPTION AND SPECIFICATIONS OF
MODEL ST-1808-44 TUNNEL
DESCRIPTION
The ST-1808-44 Tunnel is a conveyorized heat
shrinking device employing electric heating combined with a
recirculating air system, and a complete range of
adjustments. The main components are the blower, the
heater bank, the shrink chamber, and the package conveyor.
Curtains cover the entrance and exit of the heat chamber to
minimize heat loss as packages travel through the tunnel. This is a
live roller tunnel. High-density kits are available on request, to
provide 1/2” spacing between rollers to accommodate small
packages and special applications. Teflon mesh belt kits are also
available.
A simple yet reliable and extremely durable shrink tunnel.
The strength and durability of this model are it’s greatest
features. Straightforward, easy manual operation is employed.
Operator training should, at the ultimate extreme, be less than one
work shift.
SPECIFICATIONS
Model: ST-1808-44
Chamber Size: Length: 44”
Width: 18”
Height: 8”
Volts: 220
Amperage: 40
Phase: Single 1/0
Weight: 500 lbs.
DESCRIPTION AND SPECIFICATIONS
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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 SHRINK TUNNEL
Place the tunnel 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 sealer.
4. Relationship to any conveyors necessary to remove
finished product.
5. Convenience of operator.
6. Avoid drafty areas as heat may be unintentionally
drawn from the tunnel and reduce its efficiency.
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
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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.
INSTALLATION
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34512
ST-1808-44 Tunnel Service Manual
-- Front Panel Diagram
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
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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
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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
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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
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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
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TROUBLESHOOTING
The following troubleshooting section is provided to aid in
determining the source of any operation difficulties which may
develop. In performing 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 of value of voltages used, always have it disconnected.
Refer to electrical components placement sheet and
electrical schematic diagrams to assist in all troubleshooting efforts.
DISCONNECT ALL POWER BEFORE MAKING ANY REPAIRS.
REFER TO ELECTRICAL BOARD LAYOUT AND
ELECTRICAL SCHEMATIC (Page 53)
FOR LOCATION OF ELECTRICAL COMPONENTS
TROUBLESHOOTING
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Wires 6 and 10
F1 – .5 AMP
F2 -- .1 AMP
F3 -- .5 AMP
F4 – .5 AMP
ST-1808-44 Tunnel Service Manual
TROUBLE SHOOTING
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
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Wires 7 and 16
Wires 18 and 17
Wire 7 Black
Wire 7 White
Wire 23
ST-1808-44 Tunnel Service Manual
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
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End covers
ST-1808-44 Tunnel Service Manual
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 53 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
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Air velocity knob
ST-1808-44 Tunnel Service Manual
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 40.
NO AIR FLOW
1. Make sure air velocity knob is not on low.
TROUBLESHOOTING—NO AIR FLOW
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F1 – .5 AMP
F2 – 1 AMP
F3 – .5 AMP
F4 – .5 AMP
ST-1808-44 Tunnel Service Manual
2. Open main electrical panel. Check Blower Motor fuse F-1 (.5
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
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5. Check main blower motor and replace if necessary.
(a) Check motor start capacitor (M2) to see if burned.
(b) Check rotation of motor. Compare with arrow direction
and make sure motor is turning in the same direction.
(c) Check motor wires 7 and 10 for loose connection.
(d) 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. (a) Check motor contactor.
(b) Check OL-1 motor overload contactor. Factory setting 5.5
to 6.0.
TROUBLESHOOTING—NO AIR FLOW
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7. Check to make sure blower wheel is not loose on the blower
motor shaft.
TROUBLESHOOTING—NO AIR FLOW
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Terminals 13 & 14
Wire 24
Wire 7
-14
+13
ST-1808-44 Tunnel 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.
TROUBLESHOOTING—NO HEAT
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Wires 8 & 9
CR2
ST-1808-44 Tunnel Service Manual
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.
(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.
TROUBLESHOOTING—NO HEAT
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(b) Check Heater Bank for replacement. Make sure no lugs
on the Heater Bank have been broken.
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.
TROUBLESHOOTING—NO HEAT
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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
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MAINTENANCE
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, bluntedged tool. Do not use any sharp instruments, as nicking the
silicone may result in having to replace the roller covering.
To replace silicone covering on the roller proceed as follows:
MAINTENANCE
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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 38.
MAINTENANCE—REPLACE CONVEYOR ROLLERS
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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 37.
MAINTENANCE—REPLACE CONVEYOR ROLLERS
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Roller at 3 o’clock position
ST-1808-44 Tunnel 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.
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
MAINTENANCE—REPLACE CONVEYOR ROLLERS
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idler block holder, then the shaft and sprockets will come right
off. Replace and reassemble in the same manner as
disassembled.
MAINTENANCE—REPLACE CONVEYOR ROLLERS
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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
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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 53.
MAINTENANCE—REPLACE CONVEYOR MOTOR
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Access Cover
Left Side Safety
Shield
ST-1808-44 Tunnel 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
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(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
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Wires 7, 14 & 24
ST-1808-44 Tunnel 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
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ST-1808-44 Tunnel 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
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ST-1808-44 Tunnel Service Manual
5. Once blower housing is on a bench, loosen the four bolts
holding the blower wheel screen and remove screen.
6. Remove outer screen covering of Blower Wheel Housing.
MAINTENANCE—REPLACE BLOWER MOTOR
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ST-1808-44 Tunnel Service Manual
6. Remove Bolt Holding Blower wheel to Blower Motor.
Note: This housing should be tested outside the tunnel to
assure that it works. Reassemble in the same manner as
disassembled. (If force is necessary, apply it between the
motor and the blower wheel hub.) Now remove the
motor mount bolts and remove/replace motor.
Reassemble new motor and blower wheel housing.
MAINTENANCE—REPLACE BLOWER MOTOR
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ST-1808-44 Tunnel Service Manual
R. Wear rails lower adjustments.
1. Disconnect power to machine.
2. Remove idler and drive end caps. Loosen the two bolts
holding each wear rail underneath conveyor, and slide
rails over towards center. There should be 1/16” to a
max. of 1/8” clearance between conveyor chain and
roller. Retighten the two bolts.
S. Wear rails lower replacement.
1. Disconnect power to machine.
2. Remove idler and drive end caps.
3. Remove two bolts underneath conveyor from each wear
rail and slide rails out.
4. Slide new rails in; reassemble and readjust.
MAINTENANCE—REPLACE WEAR RAILS
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ST-1808-44 Tunnel Service Manual
5. Wear rail should be 1/8” from edge of chain then tighten
bolt to secure wear rails.
T. Wear rails upper adjustments.
1. Disconnect power to machine.
2. Remove drive and idler end caps.
Note: Take out only ten rollers, then move the open space to
one end. Loosen the one bolt that hold rail in place.
With a screw driver, pry rail over towards the center. Do
the same on all four corners. Spin conveyor by hand and
check clearance between chain and roller. The distance
should be about 1/16”. Then tighten the two bolts on
each rail.
MAINTENANCE—REPLACE WEAR RAILS
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ST-1808-44 Tunnel Service Manual
U. Wear rail upper replacement.
1. Disconnect power to machine.
2. Remove drive and idler end caps.
Note: Take out only top half of rollers, then move the open
space to expose upper wear rails. Remove the two bolts
that hold rails in place. Pull our rails and replace with
new rails; reassemble and readjust.
IF UNSURE OF ANYTHING, CONTACT A QUALIFIED
SERVICE TECHNICIAN.
DOUBLE CHECK ALL OF YOUR WORK BEFORE
STARTING THE MACHINE.
MAINTENANCE—REPLACE WEAR RAILS
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CB1
CR1
CR2
CR3
F4
F3
F2
F1
TS1
M2
M1
M1
RC1
EG1
TC-003
VR1
S2
S1
ST-1808-44 Tunnel Service Manual
ELECTRICAL PANEL
DIAGRAM CONTROLS FOR
ST-1808-44
ELECTRICAL PANEL DIAGRAM
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L2
L1
S1
CR1
18 2 3 4 5 6 7 9 10
AC MOTOR SPEED CONTROL PCB <MS-001>
EG1
M3
M1
M4
1(AC-R) 13 (+) 14 (-) 6 (NC) 5 (NO) 7 (C)
TEMPERATURE CONTROLER <DIGITAL>
A
A
CR2
PL2
S2
PT
14
7
7
24
10
14
11
7
17
18
19
20
21
22
23
C1
16
3
2 4
5
5
4
CR1
F1: 0.5A /250V
F2: 1.0A /250V
F3: 0.5A /250V
F4: 0.5A /250V
FUSE RATE
+
-
INPUT VOLTAGE:
220V/ 60Hz, 50A
SINGLE PHASE
98
CR3
CR2
CR3
M2
PL1
6 7
6 7
26
27
GND
CB1
2
3
2
3
CR3
2(AC-S)
1211
F1
TS1
OL1
6
F4
F2
TS2
6
6
6
F3
10
7
7
7
34
33 13
F3: Protection Fuse
(Cooling Fan Motor)
F2: Protection Fuse
(Conveyor Motor)
F4: Protection Fuse
(Temperature Controler)
PT:
Thermo
Couple
TS2:
Heat Cool Down
Sensor Switch
S2:
Heater Switch
HEATER BANK
M2:
Blower
Motor
S1:
Start Switch
PL1:
Start Switch
Indicator
TS1:
Thermo Overload
Switch (Blower Motor)
M3:
Conveyor
Motor
EG1:
Speed
Detector
VR1
VR1: Conveyor
Speed Potentiometer
M1,M4: Cooling Fan Motor
CB1: Circuit Breaker
CR1: Contactor
CR2: Contactor
CR3: Contactor
15
OL1: Overload
Contactor
F1: Protection Fuse
(Blower Motor
Contactor)
PL2:
Heater Switch
Indicator
33
13
S2
SHRINK TUNNEL MODEL: ST-
1808-44 (220V)
ST-1808-44 Tunnel Service Manual
ELECTRICAL SCHEMATIC
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ST-1808-44 Tunnel Service Manual
MODEL ST-1808-44 TUNNEL
PARTS LIST NOMENCLATURE
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SHRINK TUNNEL REPLACEMENT PARTS
Part #
Qty
Description
3500-35
4
Adjustable Leveling Bolts
3500-36
2
Bearing – Drive Shaft Mounting
1748-36
1
Blower Motor 1 HP
3548-03
1
Blower Wheel
1722-37
2
Cooling Fan Motor
3500-04
4
Caster
3500-02
1
Capacitor, 3 MF, 400 VAC
3500-19
1
Circuit Breaker – 40 AMP
3500-05
2
Chain – Master Link #40 – Extended Pin
1722-24
1
Chain – Master Link #40
3500-37
2
Chain Tension Adjustment Bolt
3500-06
28
Chain -- #40 – Extended Pin – Conveyor (per ft.)
1722-23
1.5
Chain -- #40 – Rivited-Motor to Drive Shaft (per ft.)
3400-13
2
Contactor – 3 Pole – 50 AMP
3400-15
1
Contactor-3 pole 25 Amp
3528-07
1
Conveyor Belt – SS – Wire Mesh (Belt Only) – Optional
3528-05
1
Conveyor Belt – Teflon Mesh Belt (126”) -- Optional
3528-01
1
Conveyor Belt – Mesh Belt Clamp Bar -- Optional
3500-105
1
Conveyor Drive Motor AC (5GN20K 40W 220V)
3528-10
2
Curtain Material Set (one end)
3500-11
1
Drive Shaft
3500-12
1
AC Electrical Board – Complete
3500-38
1
End Covers – Drive Side (Left)
3500-39
1
End Covers – Drive Side (Right)
3500-40
1
End Covers – Idler Side (Left)
3500-41
1
End Covers – Idler Side (Right)
3500-14
1
Fuse F1 -- .5 AMP
3500-42
1
Fuse – F2 1 AMP
3500-43
1
Fuse – F3 .5 AMP
3500-44
1
Fuse – F4 .5 AMP
3500-16
1
Fuse Block
ST-1808-44 Tunnel Service Manual
REPLACEMENT PARTS LIST
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SHRINK TUNNEL REPLACEMENT PARTS
Part #
Qty
Description
3400-31
1
Fuse Holder
3500-45
1
Heater Bank – Mounting Box
1720-09
1
Heater Bank – 9 KW
3500-46
1
Heat Sensor – B-100 NC—Tunnel Cool Down – TS2
3500-35
1
Heat Sensor – S-90 NC Thermal Overload Blower
Motor – TS1
1721-18
Hole Plug Buttons – 3/8” – Nickel
3500-47
1
Housing – Blower Motor
3500-17
1
Idler Shaft
3500-48
8
Lugs – High Temperature Heater Wire
3600-05
2
Pilot Light – 220 Volt
3500-49
1
Power Cord – 10 feet
3500-50
1
Power Cord Connector
3500-51
2
Rails – Upper/Wear Rails
3500-52
2
Rails – Lower Wear Rails
3500-23
82
Roller 16” -- Covered (Hi density 122)
3500-53
1
Safety Shield – Right End
3500-54
1
Safety Shield – Left End
3500-55
1
Safety Shield – Front
3500-56
1
Safety Shield – Back
3500-57
6
Safety Shield – 1” End Spacer
3500-58
2
Safety Shield – Front/Back Spacer 1 ½”
3500-59
5
Front/Back Spacer ½”
3500-60
5
Front/Back Mount Screw 1”
3500-61
6
Safety Shield – End Mounting Screw 1 ½” L
3500-62
2
Safety Shield – Front/Back Mounting Screw 2”
3500-63
6
Screw – Tunnel Hood Top 10 mm
3500-64
1
Screen – Blower Wheel
3500-65
1
AC Speed Control Potentiometer
3500-26
2
Sprocket – Conveyor Drive
3500-27
2
Sprocket – Conveyor Idler with Bearing
3500-28
1
Sprocket – Conveyor Motor
ST-1808-44 Tunnel Service Manual
REPLACEMENT PARTS LIST
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SHRINK TUNNEL REPLACEMENT PARTS
Part #
Qty
Description
3500-20
1
Switch – Start S1
3500-21
1
Switch – Heater Bank S2
3600-30
1
Switch – Delay cool down thermos switch
3500-29
1
Thermocouple Probe Holder
3500-30
1
Thermocouple Probe
3500-75
1
Temperature Controller
3400-79
1
Terminal Strip – Short – 3 Lug
3500-31
1
Velocity Control Knob
3500-32
1
Velocity Control Shaft
3500-70
Wire – High Temperature
3600-35
1
Thermo Overload Sensor (A-100) TS1
ST-1808-44 Tunnel Service Manual
REPLACEMENT PARTS LIST
Page 59
Sealer Sales Page 58
Item #
Part #
Description
Qty.
Price
1
3500-14
.5A Fuse
2
2
3500-15
10A Fuse
2
3
3500-21
Heater Switch
1
4
LU0855
Lubricant – Chain
1
5
3500-46
Cool Down Sensor (B-100)
1
6
1720-05
Heater Bank 10 KW
1
7
3500-75
Temperature Controller
1
8
3500-20
Start Switch
1
9
3500-30
Thermocouple Probe
1
10
3600-35
Thermo overload sensor (S-90)
1
Total Cost
$
ST-1808-44 Tunnel Service Manual
Spare Parts List
ST-1808-44 Shrink
Tunnel
01/14/00
Replacement Parts List
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