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KF-Series Foot Sealers
Model: KF-300F/305F, KF-450/455F, KF-600F/605F
Distributed By:
Version 1.0
Last Updated: 1/29/2020
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
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E Q U I P M E N T I N F O R M A T I O N
Model #
Serial #
Purchase Date:
Reference # (found on packing slip)
Owner:
General Information
Thank you for purchasing our KF-Series Foot Sealers.
This owner’s manual contains information relating to your sealer. The manual will provide you
with basic information concerning both operation and maintenance of your new machine. Please
read it carefully as failure to do so may result in bodily injury and/or damage to the equipment.
Please fill in the information below. You will find the information on the machine identification
plate. You will need this information when ordering replacement parts or making technical
inquiries.
No part of this manual may be duplicated, reproduced, stored in a retrieval system, translated,
transcribed, or transmitted in any form without the express prior written permission of Sealer Sales.
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Safety Instructions
WARNING!
Below are general safety precautions and warnings that should be
understood prior to setting up or operating your equipment. Read and fully understand all instructions and
warnings prior to using this unit. Your safety is most important! Failure to comply with procedures may
result in serious injury or property damage. Remember:
responsibility.
Unsafe practices or unauthorized modifications could result in accidents or property damage. Failure to
follow these safety rules and take necessary precautions can result in serious injury as well as damage to
equipment.
Never operate or service your sealer until you have read this manual completely and understand it
fully.
Plug the sealer into a standard 110 Volt, 60Hz wall outlet or surge protector.
Do not use the sealer if the power cord, plug or any other parts are damaged. Do not to allow the
power cord to drape into your work area. Check that all parts are operating properly and perform
the intended functions. Check for any worn parts before starting operation. Check for all other
conditions that may affect the operation.
Reduce risk of unintentional starting. Make sure the power switch is in the "OFF" position before
connecting to the power source.
Your personal safety is your
Always disconnect sealer from power source before servicing, changing accessories or cleaning the
unit.
To provide protection against the risk of electrical shock, the power connection must be properly
grounded at all times.
Do not leave the sealer unattended when in use. Disconnect the sealer from the power source
before leaving the work area.
Sealer is used solely for sealing thermoplastic materials. Using the machine for any other purpose
can cause damage to the machine and/or operator.
While operating machinery, wear close-fitting clothing and tie back long hair to prevent any
external items from getting caught in the machine. Do not wear jewelry when operating the sealer.
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Never touch the heating elements with bare hand while the sealer is plugged into a power source,
in operation or just finished operation. Touching heated areas may cause fire and/or severe burns.
While machine is in operation, do not place fingers, tools, or other foreign objects on or into the
machine. Do not place hands or fingers near pinch points. Do not touch machine while it is in
operation. Perform all procedures carefully and watch where hands and fingers are at all times.
The sealer is not water resistant or water proof. Spraying down the machine will damage machine
or cause electrical shock. Do not submerge the sealer into water or liquid.
Do not operate sealer in a corrosive or humid environment.
Always keep the machine clean and in good working condition. Follow any maintenance
procedures outlined in this manual. Make sure unit is disconnected from power source before
cleaning.
NEVER use any accessories or parts from other manufacturers. Machine should not be altered or
modified using parts that are not genuine authorized parts. Doing so will VOID YOUR
WARRANTY.
When replacing the heating elements, always replace the PTFE adhesive under the
heating element. A worn PTFE adhesive can cause the heating element to break.
PTFE adhesive works as a barrier between the body of the sealer and the element. Never allow
the element to come in direct contact with the sealer body as that will damage the timer.
Never leave the sealer unattended. Be safe, disconnect the sealer from power source before
leaving work area.
Always keep out of reach of children and pets.
Close supervision is necessary when any appliance is near persons with reduced physical, sensory
or mental capabilities or lack of experience and knowledge . This sealer is NOT to be used by
children or by persons with reduced physical, sensory or mental capabilities or lack of experience
and knowledge.
DO NOT use the sealer outdoors.
DO NOT use the sealer while under the influence of drugs, medications or alcohol.
SAVE THESE INSTRUCTIONS - REFER TO THEM OFTEN AND USE THEM TO INSTRUCT OTHERS.
The
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Basic
Principles
Place material on lower
jaw and activate
footboard
Introduction
KF-Series Foot sealers are foot sealers ideal for high volume poly bag and other thermoplastic sealing.
The sealer allows you to keep both hands free for quicker and more accurate sealing. Our KF-series foot
sealers can seal polyethylene, polypropylene, saran, nylon, static shielding bags, Mylar up to 10mil in total
thickness.
Features of the KF-Series Long Foot Sealers
Your foot sealer is equipped with a wide range of standard features and capabilities.
Impulse sealing - no warm up time needed
Plug-in electronic timer for variable control
All metal construction
Heavy duty
Sits on rectangular stand for stability
Adjustable work table height
ETL Listed (2mm seal width only)
Optional: Taller stand and tension rod available, adding 10" height
Manufacturer spare parts kit includes: Two (2) heating elements
How Do Foot Sealers Work?
Our KF-Series Foot impulse sealers fire a short burst of electricity through a
specially designed heating wire to weld thermoplastic materials together. The
length of the seal time will depend on the sealing characteristics of the bag being
sealed. The sealing process is simple: The operator places the bag between the
sealing jaws and presses the footboard to activate the unit. The operator retrieves the sealed bag and
repeats the process. Bags are sealed repeatedly and uniformly.
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KF-300F
KF-305F
KF-450F
KF-455F
KF-600F
KF-605F
Power
110V/60Hz
110V/60Hz
110V/60Hz
110V/60Hz
110V/60Hz
110V/60Hz
Watts
400W
600W
600W
900W
800W
1200W
Seal Width
2.5mm
5mm
2.5mm
5mm
2.5mm
5mm
Sealing Length
12"
12"
18"
18"
24"
24"
Standing Height
33 1/2"
33 1/2"
33 1/2"
33 1/2"
33 1/2"
33 1/2"
Working Table
Width
11-3/4"
11-3/4"
17-3/4"
17-3/4"
23-3/4"
23-3/4"
Tray Adjustment
Height
Up to 6.5"
Up to 6.5"
Up to 6.5"
Up to 6.5"
Up to 6.5"
Up to 6.5"
Throat Depth
3 1/2"
3 1/2"
3 1/2"
3 1/2"
3 1/2"
3 1/2"
Weight
45-lbs
46-lbs
47-lbs
48-lbs
50-lbs
51-lbs
Shipping
Dimensions
31" x 18" x 18"
Specifications
Electrical Circuit Diagram
Figure 1. Electrical Circuit Diagram
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Plug-In Timer
Adjustable timer for
various material
thicknesses
Working Table
Adjust work table height
as needed
Power Switch
Turn off when sealer not
in use
Foot Board
Press down on foot
board to activate sealing
process
Seal Area
Place material to be
sealed between upper
and lower jaws
Getting to Know your Foot Sealer
KF-Series Foot Sealers are simple and efficient sealing machines.
Figure 2. KF-Series Foot Sealer Overview
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Operating your Sealer
Important
Read this manual carefully, and make it available to everyone connected with the supervision, maintenance,
or operation 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
Place the sealer 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:
Adequate power source
Relationship to source of product
Relationship to any conveyors necessary to transport finished product
Convenience of operator
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Figure 3. Insert standing tube
Figure 4. Attach head to stand
Figure 5. Attach pulling pole
Figure 6. Connect working plate
Assembly Instructions
1. Insert standing tube into pedal base and connect with short screw. (Figure 3)
2. With the four long screws, connect the head (body) to the stand. (Figure 4)
3. Attach the tension rod (pulling pole) to the upper puller (Figure 11, Item #12) which is located
under the base. Next, attach the rod to the foot pedal. (Figure 5).
4. Connect the working plate to the body. Fit working plate over the bracket. Note: When
attaching the working plate bracket, leave enough space between sealer body and top of screws
of that the working plate can be attached easily. (Figure 6).
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Operation
1. Before operating, check the heating element, PTFE cover, PTFE adhesive and the
silicone rubber.
2. Insert the power cord into the correct receptacle (110V).
3. Turn the power switch on.
4. Set the timer knob to the lowest setting. Always start with a low setting and increase gradually as
needed.
5. Place material to be sealed between the jaws and press down on the foot board gently, but firmly.
The red light will turn off when sealing time is complete.
6. When red light turns off, keep pressing the foot board for an additional 2-3 seconds. For
a high quality seal, seals must cool under pressure. We usually recommend a congeal
setting of at least 2x that of the heat setting but every bag will have variations. Thicker
materials will require a longer cool (congealing) time.
Tips for Successful Sealing
1. If the seal is broken or damaged, decrease the sealing time.
2. If the seal is not fully welded, increase the sealing time.
3. If the sealing material sticks to the sealing pad, decrease the congealing time.
4. If the width of the seal is not perfect or does not match the size of the element, increase the
congealing time.
5. Always keep the sealer clean. Remove any residue found on the platform and PTFE cover. Silicone
spray may be used for this purpose.
6.
the heating element. A worn PTFE adhesive can cause the heating element to break.
PTFE adhesive works as a barrier between the body of the sealer and the element. Never allow the
element to come in direct contact with the sealer body as that will damage the timer.
7. Occasionally check the condition of the silicone rubber for wear or burns. A damaged silicone
rubber will affect the quality of the seal.
When replacing the heating elements, always replace the PTFE adhesive under
The
8. Be sure to turn off the power or unplug the unit before replacing any parts.
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KF-300F / KF-305F
KF-450F / KF-455F
K-600F / KF-605F
Replacement Kit (2.5mm)
RK-12F-KF-300F
RK-18F-KF-450F
RK-24F-KF-600F
Replacement Kit (5mm)
RK-12F5-KF-305F
RK-18F5-KF-455F
RK-24F5-KF-605F
Heating Element (2.5mm)
HE-12-2-KF-300F
HE-18-2-KF-450F
HE-24-2-KF-600F
Heating Element (5mm)
HE-12-5-KF-305F
HE-18-5-KF-455F
HE-24-5-KF-605F
PTFE Adhesive
TA-12
TA-18
TA-24
PTFE Cloth (1ft. roll)
TR-12-12
TR-18-12
TR-24-12
Silicone Rubber
(not included in RK)
SR-KF-300F/KF-305F
SR-KF-450F/KF-455F
SR-KF-600F/KF-605F
**Please note: 2.5mm and 5mm seal width sealers are NOT interchangeable.
For example: If you purchased a KF-300F (2.5mm), you CANNOT purchase the heating
element or kit for KF-305F (5mm).**
Maintenance
The following maintenance procedures should be followed to ensure the longevity of your KF-Series foot
sealer.
Inspection and Cleaning
1. Inspect your machine daily.
2. Use a clean cloth to remove any plastic residue remaining on the PTFE cloth.
3. When replacing the elements, always check the condition of the bottom PTFE tape.
4. Check the condition of the silicone rubber for wear and burns. A damaged silicone rubber will
affect the quality of the seal.
Replacement Kit Instructions
Our KF-Series foot impulse sealers will require new heating elements and PTFE from time to time. Heating
elements will break through wear and tear. A good rule of thumb is to replace the PTFE adhesive every time
you change your heating element. The PTFE cover prevents the plastic or other thermoplastic material you
are sealing from sticking to the heating element.
Replacement kits are available from your distributor. Kits include (2) heating elements, (2) PTFE adhesives,
and 1ft long roll of PTFE cover. For replacement kit part #s, refer to your model #.
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Figure 7. Loosen screws on PTFE plate.
Figure 8. Remove heating element cover
Figure 9. Remove heating element from terminal assembly
Video Demo:
https://vimeo.com/266563076
To install your replacement kit on your sealer, turn
off power and unplug sealer.
Removing Worn Parts.
1. Loosen the screws on the PTFE cover plate (Figure 11, Item #32).
2. Remove the heating element cover (Figure 11, Item #40)
3. Lift up the PTFE cover to expose the heating element (Figure 11, Item #27).
4. Remove the heating element by unscrewing the element screw apply pressure to the heating
element with your finger while unscrewing the screw to prevent the heating element from
twisting).
5. Peel off the PTFE adhesive under the heating element.
Installing New Replacement Parts.
1. Remove the backing of the liner on the PTFE adhesive.
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Figure 10. Loosen knob to remove the PTFE roller.
2. Apply it to the sealer’s sealing platform. The PTFE adhesive must always extend past the sealing
platform by approximately ¼” to ½” on both ends. Bend down the excess on both ends. (The
PTFE adhesive acts a barrier between the metal body and the heating element. Never allow the
heating element to come in direct contact with the sealer’s body because it will damage the timer.)
3. Place a new element on top of the PTFE adhesive by screwing the element in the heating terminal
assembly block. To attach the element to the other side, lift the latch found on the heating
terminal block to push the block inward and securely screw the element to the block. Check the
elements to ensure it is tight and intact.
4. Cut off any worn out PTFE cover. Ease out enough footage of PTFE cover to cover the heating
element and extend to the front of the PTFE cover plate.
5. Tighten the screws to affix the PTFE cover plate.
6. If a whole roll of PTFE cover needs to be replaced, loosen the nut (Figure 11, Item #31) found on
the plate for PTFE and remove the PTFE roller (Figure 11, Item #28). Tape one end of the
PTFE cover to the rod and roll up the entire piece. Position the PTFE cover and rod using the plate
for PTFE. Ease out enough footage of PTFE cover to cover the heating element and extend to the
front of the PTFE cover plate.
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Parts Diagram
Figure 11. Spare Parts Diagram Overview
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Item Part # Description Comments
RKs RK-Model#
REPLACEMENT KITS
Includes (2) elements, (2) PTFE adhesives, and 1ft
PTFE cover
specify model # when ordering
1 Body
2
T-KFF Timer
specify ETL or non-ETL
3
KFF-3 Pilot Lamp
4
KFF-4/4A Fuse Holder
4A Fuse 15amp
5
TISF-4 Timer Knob
6 On/Off Switch
7 5/32 x 1/4 Plane Screw
8 Upper Jaw
9 Sealing Plate
10
SR-model# Silicone Rubber specify model # when ordering
11 5/16 x 1/4 Screw
12
KFF-12 Upper Puller
13
KFF-13 Pressing Spring, Small
14
KFF-14 Puller Fixed Plate
15
KFF-15 Upper Puller Fixed Nut
16
KFF-16 3/16 Nut
17
KFF-17 3/16 x 2 1/2 Screw
18 Axis Collar
19
KFF-19 3/8 x 1 Screw
20 3/8 Nut
21
TRNS-model# Transformer specify model # when ordering
21-1
KFF-21-1 Transformer Cover
22 3/16 x 2 1/2 Screw
23 Guard Plate / Fixed Plate
24 3/16 Nut
25 1/4 x 3/4 6 Corner Screw
26
TA-12
TA-18
TA-24
PTFE Adhesive Cloth specify model # when ordering
27
HE-Model# Heating Element specify model # when ordering
28 PTFE Roller specify model # when ordering
29
TA-12-12
TA-18-12
TA-24-12
PTFE Cloth specify model # when ordering
30 PTFE Rear Press Bar
31 1/4 Nut
32 PTFE Front Press Plate
33 3/16 x 1/2 Plane Screw
Figure 12. Spare Parts Diagram Overview
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Item Part # Description Comments
34A
HTAB-KFF Heating Terminal Assembly (Includes #34-38)
Includes #34-38
34
HTAB-KFF Heating Element Fixed Ass. Case
Includes #34-38
35
HTAB-KFF Heating Element Fixed Assorted Screw
Includes #34-38
36
HTAB-KFF Heating Element Fixed Assorted Bolt
Includes #34-38
37
HTAB-KFF Heating Element Fixed Assorted Driving Plate
Includes #34-38
38
HTAB-KFF Heating Element Fixed Assorted Fixed Bolt
Includes #34-38
39 5/32 x 1 Screw
40 Heating Terminal Cover, End Cap
41 1 1/4 Plane Screw
42
MSW-KFF Microswitch
43 Miscroswitch Upper Fixed Plate
44 Miscroswitch Lower Fixed Plate
45 Microswitch Fixed Nut
46 Microswitch Driving Plate
47 Microswitch Fixed Bolt
48 Buckle (Bushing)
49
PWC-KF Power Cord
50 Guard Plate / Fixed Plate
51 5/32 x 1/4 Plane Screw
52 Stand
53 5/16 x 16 Corner Screw
54 5/16 Nut
55 Base
56 5/16 Nut
57 5/16 x 3/4 6 Corner Screw
58 Rubbert Foot
59 5/16 x 3/4 6 Plane Screw
60
FB-KFF Pedal
61 3/8 x 1 1/2 6 Corner Screw
62 Pressing Spring, Large
63A Pulling Pole Set (Includes #63, 64, 65)
63 Down Puller Hook
64 5/16 Nut
65 Down Puller Hook
66 Level Plate
67 1/4 x 16 Corner Screw
68 1/4 Nut
69 Working Plate
Figure 13. Spare Parts Diagram Overview
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No sealing
Timer lights off
1. Disconnected power cord
2. Power cord is broken
3. Blown fuse
4. Transformer is broken
1. Check or change plug
2. Replace power cord
3. Replace fuse
4. Replace the transformer
No sealing
Timer lights are on
1. Heating element is broken
2. Poor contact at heating terminal
blocks
1. Replace the heating element
2. Clean, tighten or change the heating terminal
blocks
No sealing
Power light on
Heat indicator off
1. Footswitch malfunction
2. Microswitch malfunction
3. Microswitch out of place
1. Replace footswitch
2. Replace microswitch
3. Adjust microswitch
Burnt PTFE cloth
1. Timer malfunction
2. Timer setting too high
1. Replace timer
2. Decrease timer setting
Broken heating element 1. Worn PTFE adhesive 1. Replace PTFE adhesive
Wrinkled seal
1. Seal time is set too high
2. Cooling (congeal) time is too
short
1. Decrease sealing time
2. Increase congealing time
Imperfect seal
1. Worn PTFE cloth
2. Worn silicone rubber
1. Replace PTFE cloth
2. Replace the silicone rubber
Burnt seal 1. Seal time is set too high 1. Decrease seal time
No seal 1. Seal time is set too low 1. Increase seal time
Seal sticking to PTFE cloth
1. Worn or dirty PTFE cloth
2. Worn or dirty silicone rubber
1. Replace or clean PTFE cloth
2. Replace or clean silicone rubber
Troubleshooting
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