McElroy Pit Bull 26 User manual

Manual: 711501 Revision: F 10/18
Pit Bull®26
Fusion Machine
Operator’s
Manual
Original Language: English

This product and other products
could be protected by patents or
have patents pending. All the latest
patent information is available at
patent.mcelroy.com
Cancer and Reproductive Harm -
www.P65warnings.ca.gov
8163361

Introduction
Thank You for purchasing this
McElroy product
The Pit Bull® 26 model fusion machines are designed
to butt fuse thermoplastic pipe as well as tees, ells and
other fittings.
When fusing thermoplastic pipe materials, refer to the
pipe manufacturer's fusion procedures or appropriate
joining standard.
The Pit Bull 26 fuses 2” IPS through 6” DIPS (63mm
through 180mm).
With reasonable care and maintenance, these machines
will give years of satisfactory service.
Before operating this machine, please read this manual
thoroughly, and keep a copy with the machine for future
reference. This manual is to be considered part of your
machine.
TX04146-04-02-14
McElroy University
For more than 30 years, McElroy has been the only
pipe fusion machine manufacturer to continuously
offer advanced training. Course offerings are meant to
enhance your efficiency, productivity and safety in the
proper use of McElroy machines. McElroy University
classes are structured so that the skills learned and the
machines used in each class closely match the machines
found on pipelining jobsites. We offer training at
our facility or yours. Our uniquely qualified McElroy
University course instructors offer years of industry
experience.
Tuition for each course includes lunches, course materials
and a certificate of completion. Online registration,
as well as up-to-date course offerings and dates, is
available at www.mcelroy.com/university
This manual is intended as a guide only and does not
take the place of proper training by qualified instructors.
The information in this manual is not all inclusive and
can not encompass all possible situations that can be
encountered during various operations.
MU2-03-13-14
TX04659-03-24-14

Warranty
LIMITED WARRANTY
McElroy Manufacturing, Inc. (McElroy) warrants all
products manufactured, sold and repaired by it to be
free from defects in materials and workmanship, its
obligation under this warranty being limited to repairing
or replacing at its factory and new products, within 5
years after shipment, with the exception of purchased
items (such as electronic devices, pumps, switches, etc.),
in which case that manufacturer’s warranty applies.
Warranty applies when returned freight is prepaid and
which, upon examination, shall disclose to have been
defective. This warranty does not apply to any product
or component which has been repaired or altered by
anyone other than McElroy or has become damaged
due to misuse, negligence or casualty, or has not been
operated or maintained according to McElroy’s printed
instructions and warnings. This warranty is expressly in
lieu of all other warranties expressed or implied. The
remedies of the Buyer are the exclusive and sole remedies
available and Buyer shall not be entitled to receive any
incidental or consequential damages. Buyer waives
the benefit of any rule that disclaimer of warranty shall
be construed against McElroy and agrees that such
disclaimers herein shall be construed liberally in favor of
McElroy.
RETURN OF GOODS
Buyer agrees not to return goods for any reason except
upon the written consent of McElroy obtained in advance
of such return, which consent, if given, shall specify the
terms and conditions and charges upon which any such
return may be made. Materials returned to McElroy, for
warranty work, repair, etc., must have a Return Material
Authorization (RMA) number, and be so noted on the
package at time of shipment. For assistance, inquiry shall
be directed to:
McElroy Manufacturing, Inc.
P.O. Box 580550
833 North Fulton Street Tulsa, Oklahoma 74158-0550
PHONE: [phone], FAX: [phone].
EMAIL: [e-mail]
Note: Certain repairs, warranty work, and inquiries may
be directed, at McElroy’s discretion, to an authorized
service center or distributor.
TX02486-11-4-13
DISCLAIMER OF LIABILITY
McElroy accepts no responsibility of liability for fusion
joints. Operation and maintenance of the product is the
responsibility of others. We recommend qualified joining
procedures be followed when using McElroy fusion
equipment.
McElroy makes no other warranty of any kind whatever,
express or implied; and all implied warranties of
merchantability and fitness for a particular purpose which
exceed the aforestated obligation are hereby disclaimed
by McElroy.
PRODUCT IMPROVEMENT
McElroy reserves the right to make any changes in or
improvements on its products without incurring any
liability or obligation to update or change previously sold
machines and/or the accessories thereto.
INFORMATION DISCLOSED
No information of knowledge heretofore or hereafter
disclosed to McElroy in the performance of or in
connection with the terms hereof, shall be deemed to be
confidential or proprietary, unless otherwise expressly
agreed to in writing by McElroy and any such information
or knowledge shall be free from restrictions, other than a
claim for patent infringement, is part of the consideration
hereof.
PROPRIETARY RIGHTS
All proprietary rights pertaining to the equipment or
the components of the equipment to be delivered by
McElroy hereunder, and all patent rights therein, arising
prior to, or in the course of, or as a result of the design
or fabrication of the said product, are exclusively the
property of McElroy.
LAW APPLICABLE
All sales shall be governed by the Uniform Commercial
Code of Oklahoma, U.S.A.
Register your product online to activate your warranty:
www.McElroy.com/fusion
(Copy information listed on the machine nameplate here
for your records).
Model No.
Serial No.
Date Received
Distributor

Table of Contents
Equipment Safety
Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Read and Understand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Wear Safety Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Heater is Not Explosion Proof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Electric Motors are Not Explosion Proof . . . . . . . . . . . . . . . . . . . . . . . 1-3
Electrical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Facer Blades are Sharp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Heater is Hot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Fusion Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Overview
Theory of Heat Fusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Reversible Jaws & Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Facer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Facer Stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Insulated Heater Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Cam Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Clamp Knobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Operation
Read Before Operating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Prepare Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Install Clamping Inserts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Load Pipe into Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Insert Facer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Positioning Pipe in Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Face the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Check Alignment of Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Check Heater Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Inserting Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Heating the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Fusing the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Optional Use of Torque Wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Removing Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Special Operation - Knife Edge Inserts
Install Knife Edge Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
COPYRIGHT © 2018, 2017, 2016, 2014, 2010
McELROY MANUFACTURING, INC.
Tulsa, Oklahoma, USA
All rights reserved
All product names or trademarks are property of their respective owners. All information,
illustrations and specifications in this manual are based on the latest information available at
the time of publication. The right is reserved to make changes at any time without notice.

Table of Contents
Maintenance
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Cleaning the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Clean and Lubricate Guide Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Pivot Pins and Shafts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Remove Dirt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Clean and Lubricate Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Clean Eyebolt Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Fasteners Must be Tight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Installing Butt Fusion Heater Plates . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Clean Heater Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Adjusting Heater Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Heater Indicator Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Facer and Blades. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Facer Guides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Removable Cam Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Maintenance Checklist
Maintenance Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Determine Fusion Force
Determine Fusion Force. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Specifications
Pit Bull 26 Fusion Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
TX04145-8-3-10

1 - 1
Fusion Equipment Safety
Safety Alerts
This hazard alert sign appears in this manual.
When you see this sign, carefully read what it says.
YOUR SAFETY IS AT STAKE.
You will see the hazard alert sign with these words:
DANGER, WARNING, and CAUTION.
Indicates an imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
Indicates a hazardous situation which,
if not avoided, may result in minor or
moderate injury.
In this manual you should look for two other words:
NOTICE and IMPORTANT.
NOTICE: can keep you from doing something that might
damage the machine or someone's property. It may also
be used to alert against unsafe practices.
IMPORTANT: can help you do a better job or make your
job easier in some way.
¡PELIGRO!
¡PELIGRO!
WR00051-11-30-92
TX00030-12-1-92
Read and Understand
Do not operate this equipment until you have carefully read, and
understand all the sections of this manual, and all other equipment
manuals that will be used with it.
Your safety and the safety of others depends upon care and
judgment in the operation of this equipment.
Follow all applicable federal, state, local, and industry specific
regulations.
McElroy Manufacturing, Inc. cannot anticipate every possible
circumstance that might involve a potential hazard. The warnings
in this manual and on the machine are therefore not all inclusive.
You must satisfy yourself that a procedure, tool, work method, or
operating technique is safe for you and others. You should also
ensure that the machine will not be damaged or made unsafe by
the method of operation or maintenance you choose.
WR00052-12-1-92
TX02946-4-15-09

1 - 2
Fusion Equipment Safety
General Safety
Safety is important. Report anything unusual that you notice during
set up or operation.
LISTEN for thumps, bumps, rattles, squeals, air leaks, or unusual
sounds.
SMELL odors like burning insulation, hot metal, burning rubber, hot
oil, or natural gas.
FEEL any changes in the way the equipment operates.
SEE problems with wiring and cables, hydraulic connections, or other
equipment.
REPORT anything you see, feel, smell, or hear that is different from
what you expect, or that you think may be unsafe.
SAFE1ST-12-22-92
Wear Safety Equipment
Wear a hard hat, safety shoes, safety glasses, and other
applicable personal protective equipment.
Remove jewelry and rings, and do not wear loose-fitting clothing
or long hair that could catch on controls or moving machinery.
WR00053-12-2-92
Heater Is Not Explosion Proof
This heater is not explosion proof. Operation
of heater in an explosive atmosphere without
necessary safety precautions will result in serious
injury or death.
When operating in an explosive atmosphere, the heater should be
brought up to temperature in a safe environment, then unplugged
before entering the explosive atmosphere for fusion.
TX04467-03-24-14
WR00034-11-30-92
TX00114-4-22-93
TX00032-4-7-93
¡PELIGRO!

Fusion Equipment Safety
1 - 3
Facer Blades Are Sharp
Facer blades are sharp and can cut. Never
attempt to remove shavings while the facer is
running, or is in the facing position between the
jaws. Use care when operating the facer, and when handling the
unit.
NOTICE: Disconnect power from the facer, and remove the facer
blades before attempting any maintenance or adjustment.
NOTICE: Never extend the blade beyond the inner or outer
circumference of the facer.
TX02378-1-24-05
WR00073-4-6-93
Electric Motors are Not Explosion Proof
Electric motors are not explosion proof. Operation of
these components in an explosive atmosphere without
necessary safety precautions will result in serious
injury or death.
See Section "Facer" in the Overview section for instructions on
removing brushes from facer motor.
TX02979-04-02-14
WR00080-4-15-09
¡PELIGRO!
Electrical Safety
Always ensure power cords are properly
grounded. It is important to remember that you
are working in a wet environment with electrical
devices. Proper ground connections help to
minimize the chances of an electric shock.
Frequently inspect electrical cords and unit for damage. Have
damaged components replaced and service performed by a
qualified electrician.
Do not carry electrical devices by the cord.
NOTICE: Always connect equipment to the proper power source as
listed on the unit, or in the owner's manual.
NOTICE: Disconnect the equipment from the power source before
attempting any maintenance or adjustment.
TX02947-4 -15-09
WR00055-4-7-93
WR00025-11-30-92

Heater is Hot
The heater is hot and will burn clothing and skin.
Keep the heater in its insulated heater stand or
blanket when not in use, and use care when
heating the pipe.
NOTICE: Use only a clean non-synthetic cloth such as a cotton
cloth to clean the heater plates.
TX00104-8-12-94
Fusion Equipment Safety
Fusion Procedures
Obtain a copy of the pipe manufacturer's procedures or
appropriate joining standard for the pipe being fused. Follow the
procedure carefully, and adhere to all specified parameters.
NOTICE: Failure to follow pipe manufacturer's procedure could
result in a bad joint. Always follow pipe manufacturer's
procedures.
TX04469-10-24-12
WR00079-1-24-96 WR00030-2-10-93
1 - 4

Overview
2 - 1
Theory of Heat Fusion
The principle of heat fusion is to heat two surfaces to a
designated temperature, and then fuse them together by
application of force. This pressure causes flow of the melted
materials, which causes mixing and thus fusion. When the
thermoplastic material is heated, the molecular structure is
transformed from a crystalline state into an amorphous condition.
When fusion pressure is applied, the molecules from each
thermoplastic part mix. As the joint cools, the molecules return to
their crystalline form, the original interfaces are gone, and the
fitting and pipe have become one homogeneous unit. A strong,
fully leak tight connection is the result.
The principal operations include:
Clamping The pipe pieces held axially to allow all subsequent
operations to take place.
Facing The pipe ends must be faced to establish clean,
parallel mating surfaces perpendicular to the
centerline of the pipes.
Aligning The pipe ends must be aligned with each other to
minimize mismatch or high-low of the pipe walls.
Heating A melt pattern that penetrates into the pipe must be
formed around both pipe ends.
Joining The melt patterns must be joined with a specified
force. The force must be constant around the interface
area.
Holding The molten joint must be held immobile with a
specified force until adequately cooled.
Inspecting Visually examine the entire circumference of the joint
for compliance with standards established by your
company, customer, industry, federal, state, or local
regulations.
TX04660-03-24-14
PH00363B-1-4-96

Overview
2 - 2
Reversible Jaws & Levers
The Pit Bull 26 fusion machine's upper jaws and control levers are
reversible from one side to the other. This allows the machine to
be operated from either side. The jaws can be removed by pulling
the pivot pin out. The clamp knobs can be removed by loosening
the set screw on the eyebolt and removing the pin holding the
eyebolt in place.
The lever handles can be moved from one side to the other by
depressing their spring pins and pulling them out. Put the lever in
the desired socket and make sure its pin engages the hole.
TX04139-8-3-10
PH04259-7-20-10 PH04258-7-20-10
Heater
Heater is not explosion proof. Operation of heater
in an explosive atmosphere without necessary safety
precautions will result in serious injury or death.
If operating in an explosive atmosphere, heater should be brought up to
temperature in a safe environment, then unplugged before entering the
explosive atmosphere for fusion.
The heater has a green indicator light which will flash on and off. This
indicates that the controller is operating normally. If the green indicator
is not flashing then the controller may not be operating properly. If this
occurs, disconnect power and have the heater repaired by a McElroy
Authorized Service Center.
The heater temperature is controlled by a microprocessor. It has a red
indicator light on the handle at the bottom of the temperature scale.
When the heater is plugged in and preheating the light glows steadily
until the set temperature is reached. The light then goes off and on slowly
as the heater maintains temperature.
The heater body is not coated. Coated butt fusion heater plates are
available for all butt fusion applications.
NOTICE: The heater should never be used without butt fusion heater plates
installed.
To prevent a build-up of plastic pipe residue from accumulating on the
heater plates (loss of surface temperature and pipe sticking may result),
the heater plates should be cleaned with a nonsynthetic cloth before every
fusion joint.
TX02981-01-03-14
PH04260-7-20-10
¡PELIGRO!
PH04280-7-20-10

Facer
The facer is a McElroy rotating planer block design. The blade
holders each contain three cutter blades. The block rotates on ball
bearings and is chain driven (enclosed in lubricant) by a heavy duty
electric motor. When operating in an explosive atmosphere, operate
the facer manually.
Electric motors are not explosion proof. Operation
of these components in an explosive atmosphere will
result in serious injury or death.
Remove brushes on the Milwaukee facer motor:
The armature brushes must be removed from the electric motor when
manually operating in explosive atmospheres. Unscrew the brushes
from both sides of the motor. (Both brushes must be removed). A
7/8" hex shaft allows for manual operation in explosive atmospheres.
Remove brushes on the Eibenstock facer motor:
The armature brushes must be removed from the
electric motor when manually operating in an explosive
atmosphere.
Remove the rear cover of the motor.
Slide the spring clip away from the brush and pull the
brush out (A).
Loosen the brush ground wire (B) and pull the wire loose.
Repeat these steps on the wire on the opposite side.
Store the brushes in a safe location until needed.
A 7/8" hex shaft allows for manual operation in an
explosive atmosphere.
The facer has a handle that latches into place on a
guide rod. The handle must be pulled out to unlatch and
remove facer.
The electric facer is symmetrical and can be inserted from
either side.
The facer should be stored in the stand when not in use.
NOTICE: Never extend the blade beyond the inner or
outer circumference of the facer.
TX04140-03-24-14
PH04261-7-20-10
PH04262-7-20-10
¡PELIGRO!
Overview
2 - 3
PH04129-4-12-10 PH04130-4-12-10
B
A
PH04130-4-12-10

Facer Stand
The facer stand is for holding the facer when not in use. The facer
stand is offset to one side.
NOTICE: The facer stand is offset to one side. Place the facer with
the motor as shown to prevent tipping.
TX04148-8-3-10
CD00858-8-4-10
Overview
2 - 4
Insulated Heater Stand
The heater should always be stored in the insulated heater stand
for protection of the operator and to minimize heat loss and risk of
mechanical damage.
TX04141-8-3-10
PH04260-7-20-10
Cam Lock
A semi-automatic cam locking system locks the movable jaw
during the cooling cycle.
TX00837-1-5-96
Clamp Knobs
Clamp knobs are equipped with a thrust bearing, which permit the
operator to develop high clamping forces with minimal effort.
TX03099-4-12-10
PH04257-7-20-10
PH04279-7-20-10

Operation
Read Before Operating
Before operating this machine, please read this manual
thoroughly, and keep a copy with the machine for future reference.
When fusing thermoplastic pipe materials, refer to the pipe
manufacturer's suggested procedures or appropriate joining
standard.
TX04688-03-25-14
PH01054-2-20-97
Prepare Heater
Heater is not explosion proof. Operation of
heater in an explosive atmosphere without
necessary safety precautions will result in serious
injury or death.
If operating in an explosive atmosphere, heater should be brought
up to temperature in a safe environment, then unplugged before
entering the explosive atmosphere for fusion.
Install butt fusion heater plates.
NOTICE: The heater should never be used without butt fusion
heater plates installed. Refer to the "Maintenance" section of this
manual for installation procedure.
Place heater in insulated heater stand.
Plug heater into a proper power source.
Allow heater to warm-up to operating temperature.
Refer to the "Maintenance" section of this manual for instructions
on how to adjust heater temperature.
TX02310-03-24-14
PH04263-7-20-10
¡PELIGRO!
3 - 1
PH04260-7-20-10
Install Clamping Inserts
Select and install appropriate clamping inserts for the pipe size that is
being fused.
TX01310-4-1-97
PH04264-7-20-10

Operation
3 - 2
Load Pipe Into Machine
Clean the inside and outside of pipe ends that are to be fused.
Open the upper jaws and insert pipe in each pair of jaws with
applicable inserts installed. Let the ends of the pipe protrude
about 3/4" past the face of the jaws. Close upper jaws but do
not clamp tight.
TX04142-8-3-10
PH04265-7-20-10
Insert Facer
Place the end opposite the handle onto the far guide rod, then
lower the facer handle end down onto the near guide rod and
latch.
TX01851-7-25-00
PH04266-7-20-10
Positioning Pipe in Machine
Position the facer on the guide rods and lock into position. Using lever
handle, bring pipe ends together against the facer, watching the gap
between the facer stops and the pipe clamping jaws. Leave enough
gap so that proper face-off will be achieved when the facer stops are
bottomed out against the clamps. Tighten the pipe clamp knobs by
hand until firm resistance is felt. Do not over-tighten.
NOTICE: Thoroughly clean all dirt and debris from pipe ends before
facing.
TX00839-1-5-96
PH04267-7-20-10
Face the Pipe
The electric facer should be started before the pipe is pushed into
contact with the blades. Continue facing until the facer stops are against
the jaws then turn off the facer while continuing to hold pressure closed
on the lever until the facer stops completely.
Reverse force to the lever handle to move the pipe ends away from the
facer. Unlatch and remove the facer taking care not to touch the pipe
ends. Remove shavings from pipe ends and machine. Do not touch
faced pipe ends as this may contaminate them.
If after facing any imperfections are visible on the ends of the pipe move
the pipe inward and reface.
Any time clamp knobs are tightened pipe ends should be refaced.
TX01851-7-25-00
PH04268-7-20-10

3 - 3
Operation
Check Heater Temperature
NOTICE: Incorrect heating temperature can result in
questionable fusion joints. Check heater plates periodically
with a pyrometer and make necessary adjustments.
Refer to the "Maintenance" section of this manual for instructions
how to adjust heater temperature.
Check heater surface temperature with a pyrometer.
Refer to the pipe manufacturer's recommendations or appropriate
joining standard for proper heater temperature.
IMPORTANT: The dial thermometer on the heater indicates internal
temperature which varies from the actual surface temperature.
The dial thermometer can be used as reference once the surface
temperature has been verified and is never a substitute for actual
surface temperature.
TX04011-4-12-10
WR00077-4-16-93
PH04270-7-20-10
Check Alignment of Pipe
Bring the pipe ends together under sufficient force to overcome
any pipe drag or friction in the system. Check for alignment
and proper face off. If high/low (misalignment) exists, adjust by
tightening the clamp on the high side and reface the pipe.
NOTICE: When clamping, do not over-tighten the clamp knobs
because machine damage can result. Check to see if there is
space between the upper and lower jaws. If the two jaws are
touching, do not continue to tighten. Bring the pipe ends together
under fusion pressure plus drag to check for slippage. If slippage
occurs, return to Loading Pipe into Machine.
TX02477-3-30-05
PH04269-7-20-10

Operation
3 - 4
Inserting Heater
The heater is not explosion proof. Operation
of heater in an explosive atmosphere without
necessary safety precautions will result in serious
injury or death.
If operating in an explosive atmosphere, heater should be brought
up to temperature in a safe environment, then unplugged before
entering the explosive atmosphere for fusion.
Use a clean non-synthetic cloth to clean the butt fusion heater
adapter surfaces.
Verify heater temperature by noting the reading on the dial
thermometer.
Insert heater between the pipe ends. The stripper bar downward
legs should be outside of the jaws. (not on top)
TX04050-03-24-14
PH04271-7-20-10
¡PELIGRO!
Heating the Pipe
With heater in position between the pipe ends, snap pipe ends
sharply against the heater to ensure alignment. Follow the pipe
manufacturer's recommendations for heating time and pressure.
Raise the locking cam into the engaged position while in the
heating cycle.
TX00842-1-8-96
PH04272-7-20-10
Fusing the Pipe
After the heating cycle is completed, remove the heater and
quickly apply fusion force with the lever handle in accordance
with the pipe manufacturer's recommended fusion procedure or
appropriate joining standard. A torque wrench can be used when
a specified Interfacial Pressure is required. Hold this force for at
least 10 seconds.
After 10 seconds, the locking cams will assist by maintaining jaw
position during the cooling cycle.
NOTICE: Failure to follow pipe manufacturer's heating time,
pressure and cooling time may result in a bad joint.
TX04693-06-23-16
PH04273-7-20-10

Operation
3 - 5
Removing Pipe
After pipe has cooled sufficiently, apply closing force on the
lever handle and push the locking cams down into the unlocked
position. Unscrew the clamp knobs enough that they can be
swiveled outward.
TX00844-1-8-96
PH04275-7-20-10
Optional Use of Torque Wrench
When a specified Interfacial Pressure is required in the fusion
procedure, a torque wrench can be used.
IMPORTANT: Use a torque wrench with the Pit Bull 26 fusion
machine. Place an adapter (Part # 410802) or (Part # 713901)
in the lever socket. A torque wrench is required when using the
torque wrench adapter. There are two torque wrenches that can
be used. A 1/2" drive, 15" torque wrench and a 3/8" drive,
13.625" torque wrench. Using a torque wrench of a different
length will result in different forces from the torque reading.
To calculate the proper torque reading see Section "Determine
Fusion Force."
Add the torque required to overcome Drag (the force required to
move the pipe at or near the point of fusion) to the torque reading
to assure the proper joining force. This should be determined prior
to inserting the heater.
NOTICE: Failure to follow pipe manufacturer's heating time,
pressure and cooling time may result in a bad joint.
TX04143-2-26-14
PH04274-7-20-10
PH01866-7-25-00PH05176-2-26-14

Special Operation - Knife Edge Inserts
4 - 1
Install Knife Edge Inserts
The knife edge inserts are used when clamping to a pipe that has
a fitting fused to the pipe.
Pull the pin hold the upper fixed jaw to the lower jaw.
Remove the upper jaw.
Install the knife edge upper jaw to the lower and pin in place.
The knife edge of the upper jaw must be to the interior of the
machine. The jaws and clamp knobs may need to be reversed to
be able to install the jaw in the correct direction.
Remove any lower inserts from the lower fixed jaw.
Install the knife edge lower jaw insert into the lower fixed jaw
with the knife edge to the interior of the machine and pin in place.
Installation is complete and now is ready to clamp pipe.
TX04652-2-25-14
PH05171-2-25-14
PH05172-2-25-14PH05173-2-25-14PH05174-2-25-14PH05175-2-25-14