SS-Series Shrink Tunnels Model: ST-1808-28 / ST-1812-28 Distributed By: Version 1.0 Last Updated: 2/21/20 Sealer Sales | www.sealersales.com | Tel: 818-718-8818 | E-mail: contact@sealersales.
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.
Sealer Sales Page 2 ST-1808-28 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.
Sealer Sales Page 3 ST-1808-28 Tunnel Service Manual TABLE OF CONTENTS ___________________________________________________________ Preface Unpacking Warranty Notice Warranty Warranty Exceptions Warnings 4-8 9 10-11 12 13-15 Tunnel Section Description and Specifications Installation and Basic Set-Up Front Panel Diagram Sequence of Operation Temperature Control Adjustment Troubleshooting Troubleshooting–Conveyor Malfunction Troubleshooting–No Air Flow Troubleshooting–No Heat Maintenance Maintenance—Replac
Sealer Sales Page 4 ST-1808-28 Tunnel 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.
Sealer Sales Page 5 ST-1808-28 Tunnel Service Manual Your new Shrink Tunnel comes bolted to a pallet and has a tri-walled 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.
Sealer Sales Page 6 ST-1808-28 Tunnel Service Manual UNPACKING 1. Cut the two steel straps holding corrugated box to pallet. 2. Remove tri-wall corrugated box from pallet.
Sealer Sales Page 7 ST-1808-28 Tunnel Service Manual 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.
Sealer Sales Page 8 ST-1808-28 Tunnel Service Manual UNPACKING 7. Cut plastic strap from top and bottom of conveyor rollers before attempting to operate conveyor.
Sealer Sales Page 9 ST-1808-28 Tunnel 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 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.
Sealer Sales Page 10 ST-1808-28 Tunnel Service Manual Sealer Sales WARRANTY Sealer Sales, Inc. warrants each new product manufactured to be free from defects in material and workmanship for a period of (2) 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 Page 11 ST-1808-28 Tunnel Service Manual 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 which was actually paid.
Sealer Sales Page 12 ST-1808-28 Tunnel Service Manual 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-1808-28 Tunnel Parts 1. 2.
Sealer Sales Page 13 ST-1808-28 Tunnel 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.
Sealer Sales Page 14 ST-1808-28 Tunnel 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 jaws on packaging machinery can become very warm after a period of use.
Sealer Sales Page 15 ST-1808-28 Tunnel Service Manual 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.
Sealer Sales Page 16 ST-1808-28 Tunnel Service Manual DESCRIPTION AND SPECIFICATIONS OF MODEL ST-1808-28 TUNNEL DESCRIPTION The ST-1808-28 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.
Sealer Sales Page 17 ST-1808-28 Tunnel 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.
Sealer Sales Page 18 ST-1808-28 Tunnel 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.
Sealer Sales Page 19 ST-1808-28 Tunnel Service Manual -- Front Panel Diagram APPLICABLE FOR ALL PP TUNNELS 1 2 3 4 5 1. 2. 3. 4. 5.
Sealer Sales Page 20 ST-1808-28 Tunnel 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.
Sealer Sales Page 21 ST-1808-28 Tunnel Service Manual SEQUENCE OF OPERATION 1 2 3 4 5 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.
Sealer Sales Page 22 ST-1808-28 Tunnel 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.
Sealer Sales Page 23 ST-1808-28 Tunnel 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.
Sealer Sales Page 24 ST-1808-28 Tunnel Service Manual TROUBLESHOOTING The following troubleshooting section is provided to aid in determining the source of any operation difficulties that may develop. In performing tests and checks that 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.
Sealer Sales Page 25 ST-1808-28 Tunnel Service Manual TROUBLE SHOOTING Conveyor malfunction 1. Check main power at machine’s main breaker. F1 – 8 AMP F2 -- .5 AMP Wires 6 and 10 F3 -- .5 AMP F4 – .5 AMP 2. Open main panel. Check conveyor motor fuse (F-3/.5 Amp) wires No.6 and 10. If bad, replace.
Sealer Sales Page 26 ST-1808-28 Tunnel Service Manual Conveyor malfunction (continued) Wire 23 Wire 7 Black Wire 7 White 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. Wires 7 and 16 Wires 18 and 17 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.
Sealer Sales Page 27 ST-1808-28 Tunnel Service Manual Conveyor malfunction (continued) End covers 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 51 for proper wiring of the motor. (b) Check wires 7 and 16 for power. If power present and motor does not operate, replace motor.
Sealer Sales Page 28 ST-1808-28 Tunnel 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 40. NO AIR FLOW Air velocity knob 1. Make sure air velocity knob is not on low.
Sealer Sales Page 29 ST-1808-28 Tunnel Service Manual NO AIR FLOW (continued) F1 – 8 AMP F2 – .5 AMP F3 – .5 AMP F4 – .5 AMP 2. 3. 4. Open main electrical panel. Check Blower Motor fuse F-1 (10 amp). Test fuses F1, F2, F3 and F4. Check to make sure no air holes are obstructed due to plastic build up covering air holes.
Sealer Sales Page 30 ST-1808-28 Tunnel 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.
Sealer Sales Page 31 ST-1808-28 Tunnel Service Manual NO HEAT -14 Wire 7 +13 Terminals 13 & 14 Wire 24 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.
Sealer Sales Page 32 ST-1808-28 Tunnel Service Manual NO HEAT (continued) CR1 Wires 2 & 3 (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.
Sealer Sales Page 33 ST-1808-28 Tunnel 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.
Sealer Sales Page 34 ST-1808-28 Tunnel Service Manual 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.
Sealer Sales Page 35 ST-1808-28 Tunnel 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 36.
Sealer Sales Page 36 ST-1808-28 Tunnel 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.
Sealer Sales Page 37 ST-1808-28 Tunnel Service Manual Roller at 3 o’clock position 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).
Sealer Sales Page 38 ST-1808-28 Tunnel 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.
Sealer Sales Page 39 ST-1808-28 Tunnel 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) (4) Remove two bolts from the flange bearings and remove drive shaft assembly. 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.
Sealer Sales Page 40 ST-1808-28 Tunnel 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 51.
Sealer Sales Page 41 ST-1808-28 Tunnel Service Manual O. Heater bank replacement. (1) Shut off power to machine. (2) Remove left side safety shield and panel. Access Cover (3) Remove access cover and pull insulation out.
Sealer Sales Page 42 ST-1808-28 Tunnel 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.
Sealer Sales Page 43 ST-1808-28 Tunnel Service Manual P. Temperature controller replacement. (1) Shut off power to machine. (2) Open main panel door. Wires 7, 14 & 24 (3) (4) Disconnect four wires (Two Nos. 7, 14 and 24) and thermocouple wires from temperature controller. 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.
Sealer Sales Page 44 ST-1808-28 Tunnel Service Manual Q. Blower Motor Replacement. 1. Shut off power to machine. 2. 3. Remove top panel and 4 screws holding the blower chamber cover. Disconnect wires on the blower motor. 4. Remove four bolts at motor base.
Sealer Sales Page 45 ST-1808-28 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.
Sealer Sales Page 46 ST-1808-28 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.
Sealer Sales Page 47 ST-1808-28 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.
Sealer Sales Page 48 ST-1808-28 Tunnel Service Manual 5. T. Wear rail should be 1/8” from edge of chain then tighten bolt to secure wear rails. 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 screwdriver, pry rail over towards the center. Do the same on all four corners.
Sealer Sales Page 49 ST-1808-28 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.
Sealer Sales Page 50 ST-1808-28 Tunnel Service Manual ELECTRICAL PANEL DIAGRAM CONTROLS FOR ST-1808-28 ELECTRICAL PANEL DIAGRAM
Sealer Sales Page 51 ST-1808-28 Tunnel Service Manual GND L1 L2 INPUT VOLTAGE: 220V/ 60Hz, 40A SINGLE PHASE F1: Protection Fuse (Blower Motor) F2: Protection Fuse (Conveyor Motor) CB1 2 3 2 F3: Protection Fuse (Cooling Fan Motor) F4: Protection Fuse (Temperature Controler) S1 5 3 6 PL1: Start Switch Indicator 7 FUSE RATE F1: 8A /250V F2: 0.5A /250V F3: 0.5A /250V F4: 0.
Sealer Sales Page 52 ST-1808-28 Tunnel Service Manual MODEL ST-1808-28 TUNNEL Item Part # Qty Parts List Nomenclature M1 M2 M3 CR1 (CU-27) CR2 (CU-27) TC-003 Heater RC1 EG1 ACT VR1 TS1 TS2 CB1 F2, F3, F4 F1 PL1 PL2 1722-37 1722-36 3500-08 3400-13 3400-13 3500-75 1720-05 3500-02 3500-25 3600-30 3400-68 3600-35 3500-46 3500-19 3500-14 3500-15 3600-05 3600-10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 1 1 Cooling Fan Motor Main Blower – ½ HP, 208-240 Volt Conveyor Motor AC (25W) Contactor – 3 Pole, 208/240 Volt,
Sealer Sales Page 53 ST-1808-28 Tunnel Service Manual SHRINK TUNNEL REPLACEMENT PARTS Part # 3500-35 3500-36 1722-36 3500-47 3500-03 1722-37 3500-04 3500-02 3500-19 3500-05 1722-24 3500-37 3500-06 1722-23 3400-13 3528-07 Qty 4 2 1 1 1 1 4 1 1 2 1 2 14 1.
Sealer Sales Page 54 ST-1808-28 Tunnel Service Manual Part # 3400-31 3500-45 1720-05 3500-46 3600-35 1721-18 3500-47 3500-17 3500-48 3600-05 3500-49 3500-50 3500-51 3500-52 3500-23-16 3500-53 3500-54 3500-55 3500-56 3500-57 3500-58 3500-59 3500-60 3500-61 3500-62 3500-63 3500-64 3500-65 3500-26 3500-27 3500-28 3500-20 Qty 1 1 1 1 1 1 1 8 2 1 1 2 2 54 1 1 1 1 6 2 5 5 6 2 6 1 1 2 2 1 1 Description Fuse Holder Heater Bank – Mounting Box Heater Bank – 7.
Sealer Sales Page 55 ST-1808-28 Tunnel Service Manual Part # 3500-21 3500-29 3500-30 3500-75 3400-79 3500-31 3500-32 3500-70 Qty 1 1 1 1 1 1 1 Description Switch – Heater Bank S2 Thermocouple Probe Holder Thermocouple Probe Temperature Controller Terminal Strip – Short – 3 Lug Velocity Control Knob Velocity Control Shaft Wire – High Temperature REPLACEMENT PARTS LIST
Sealer Sales Page 56 ST-1808-28 Tunnel Service Manual Spare Parts List Item # 1 2 3 4 5 6 Part # 3500-14 7 3600-35 8 3500-30 3500-20 LU0855 3500-46 Total Cost Description Fuse Kit Fuse - .5 Amp Fuse – 8 Amp Start Switch Lubricant – Chain Heat Sensor–(B-100) Tunnel Cool Down Thermo Overload Sensor (A-100) Thermocouple Probe Qty.
